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Home My WebLink About100-1001 Gluyas, Gavin R (OGC) From:McLellan, Bryan J (OGC) Sent:Thursday, April 3, 2025 9:06 AM To:McLellan, Bryan J (OGC) Subject:FW: [EXTERNAL] RE: Fish Creek #1 Daily Updates Bryan McLellan Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission Bryan.mclellan@alaska.gov +1 (907) 250-9193 From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Thursday, April 3, 2025 7:57 AM To: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov>; Rixse, Melvin G (OGC) <melvin.rixse@alaska.gov> Subject: Re: [EXTERNAL] RE: Fish Creek #1 Daily Updates Bryan, Update for for 3/28/2027 is actually 3/27/2025, typo in the dates. Update for 3/28/2025: 0830 – hold review of options to proceed 0930 – plugging operations selected 0945 – begin setting up and preparing equipment for cementing 1000 – RIH with 4” pipe open ended to circulate and prep, set up equipment confirm tag at 485.6' PU to 480' 1230 – Circulate well to ensure debris are cleared 2130 – all equipment prepped for mixing and pumping in the AM, continue to circulate. Cement on 3/29 was pumped via 4" Drill pipe. Allie From: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Sent: Wednesday, April 2, 2025 4:23 PM To: Schoessler, Allie M <aschoessler@blm.gov> 2 Cc: Garcia, Stephen B <sbgarcia@blm.gov>; Rixse, Melvin G (OGC) <melvin.rixse@alaska.gov> Subject: [EXTERNAL] RE: Fish Creek #1 Daily Updates This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding. Hi Allie, Could you send the report from 3/27/25? Also, how and where was the cement placed. The last note on 3/28 was POOH with 1.9” tubing, then no mention of running back in hole before pumping cement. Bryan McLellan Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission Bryan.mclellan@alaska.gov +1 (907) 250-9193 From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Monday, March 31, 2025 8:05 AM To: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 3-30-2025: 08:30 RIH 08:40 Soft tag @242’ 09:30 MU plug RIH CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. 3 10:15 Set plug at 238’ 10:50 MU casing cutter 11:20 Cut casing at 233’ 15:30 MU grapple and spear 15:44 latched & attempt to pull 15:50 have to stop and break weld 16:10 find residual diesel in the 11-3/4" 17:00 top of brine and set up to circulate 19:30 set up to cut weld 20:20 complete casing weld cut 20:35 stab in to pull pipe 20:45 safety meeting for pulling casing 20:55 start pulling casing 23:40 casing out Update 3-29-2025: 07:45 Start mixing cement 08:30 take a weight on the cement 16.2 ppg, add water 08:45 take a weight on the cement 16.0 ppg 08:50 Start pumping cement 09:10 Cement in place, displace DP 09:15 Pull Pipe to ~250’ 09:50 Start CBU x2 10:15 POOH 10:45 WOC 24 hrs. Allie From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Friday, March 28, 2025 6:32 PM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> 4 Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 3-28-2025: 3-27-25. See 3-28-25 update at the top of this email chain. bjm 00:00 At 472.5’ Continue milling operations overnight 12:45 At 485.7’ Progress has stopped. POOH 13:35 At surface – bottom of mill worn out 14:00 Review options to proceed 18:30 RU for 1.9” String with mule shoe 20:00 RIH with 1.9" 22:10 Continue with noodle operations in attempts to find a hole for an additional 15 minutes 22:25 No change in tag depth. Crew worked the pipe to try to get it to move or shift with no luck. 22:30 POOH 23:59-At Surface RD 1.9" Please let me know if you have any questions, Allie From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Thursday, March 27, 2025 11:22 AM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 3/26/2025: 06:00 At 489’ no progress – POOH 07:20 RIH with mill #3 (rerun – new OD = 5-1/4”) 08:05 at 472’ slow progress.. mill and wash 10:30 no progress POOH. 12:00 MU Mill #7 RIH – tapered window mill 5” to 3” OD 12:30 At 473- no progress- set up for reverse circ. 14:30 Reverse Circulate 15:30 Swap back to conventional pumping 17:00 At 476’ no progress POOH 17:45 at Surface- wear on bottom of mill 18:20 RIH w/ mill #8 – change shaker screens to 80 18:50 At 451’ mill/washdown 19:00 PU circulate -vis up brine to 80 19:25 Continue with mill operations 23:59 At 472.5 continue milling overnight 5 Please let me know if you have any questions, Allie From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Wednesday, March 26, 2025 7:50 AM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 03/24/20225: 00:00 at 440' continue to thaw/mill 17:45 Thaw/mill down to 629’ - determine mill might be worn out, POOH 19:00 RU new 6" window mill 19:25 RIH to 402’ start milling 21:20 tag at 452’ - no progress with mill, decide to POOH 22:30 At surface 22:50 RIH with 5-3/4” window mill 23:45 Hang up at 461, wash and mill 23:59 Continue operations overnight Made 150’ of hole today. Little to no metal debris in the returns after the area from 402’ to 440’ was cleaned up. Evening work string - RIH with minor hang ups until 461’ , continue to wash and mill overnight. Please let me know if you have any questions, Allie From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Tuesday, March 25, 2025 7:13 AM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 3/24/2025: Continued mill/thaw operations with window mill. 0600 stop, PU circulate, POOH and check mill. Mill worn out. Swap mill to 5-3/4” sting and junk mill. 1000 RIH and resume mill/thaw operations 17:30 reach 410’ – determine mill is worn out. PU circulate then POOH 20:30 MU 5-3/4” window mill. 210 RIH to 410’ with no issues, work through tight section, only metal in the returns no other debris 23:59 at 418' continue operations. Continue RIH with milling/thawing. Allie 6 From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Monday, March 24, 2025 7:20 AM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: Fish Creek #1 Daily Updates Bryan, Update for 3/23/2025: Function test pop-off valve on the mud pump and built brine 20:00 RIH with mill and began thawing down 21:45 tag at 242’ slowly mill down 23:38 tag at 395’ slowly mill down 23:59 mill past obstruction Continue RIH with mill and thawing. Allie From: Schoessler, Allie M Sent: Sunday, March 23, 2025 8:41 AM To: McLellan, Bryan J (CED) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Fish Creek #1 Daily Updates Bryan, Here is the update for 3/22/2025: BOP was installed evening of 3/21/2025. Thawing operations began overnight. On 3/22/2025 BOP was hooked up and function tested. The test plug was put in place and the stack was filled up. Completed pressure tests on the pipe rams, annular, choke and kill lines. Diverter test was performed. I n the evening MU Milling BHA. PU BHA and begin RIH to see if we could get to 261’ - tagged at 81.5’ Pick up and slowly go down again, tagged at 81.5’. Stop. POOH and secure until morning shift. Plan for today is to thaw down and mill through tight spot. Allie Schoessler Petroleum Engineer / Inspector Legacy Well Contract Office Representative Office: 907-271-3127 Cell: 907-202-2445 222 W 7th Ave Stop 13 Anchorage, AK 99513 From:Schoessler, Allie M To:McLellan, Bryan J (OGC) Subject:Re: [EXTERNAL] Re: BLM Legacy Well project Fish Creek and Cape Halkett Date:Friday, March 21, 2025 4:17:11 PM Attachments:_Fish Creek #1 Sundry Packet_signed.pdf Bryan, Please see the approved P&A design attached. Thank you, Allie From: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Sent: Friday, March 21, 2025 11:57 AM To: Schoessler, Allie M <aschoessler@blm.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: RE: [EXTERNAL] Re: BLM Legacy Well project Fish Creek and Cape Halkett Thank you Allie Also, when you have you received the final report of operations for the Fish Creek and Cape Halkett wells, please send us copies for our files. Regards Bryan McLellan Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission Bryan.mclellan@alaska.gov +1 (907) 250-9193 From: Schoessler, Allie M <aschoessler@blm.gov> Sent: Friday, March 21, 2025 9:48 AM To: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Cc: Garcia, Stephen B <sbgarcia@blm.gov> Subject: Re: [EXTERNAL] Re: BLM Legacy Well project Fish Creek and Cape Halkett Bryan, Thank you for your review and comments. Please see responses below in blue. A completed sundry packet should be headed your way by the end of the day. Well work starting with BOP testing is expected to start sometime tomorrow or over the weekend. I will start a new email chain for daily progress reports and updates. Allie From: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Sent: Tuesday, March 4, 2025 8:18 AM To: Schoessler, Allie M <aschoessler@blm.gov> Subject: [EXTERNAL] Re: BLM Legacy Well project Fish Creek and Cape Halkett This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding. Allie, Apologies for late reply. This got lost in my inbox. Procedure looks good. A couple comments for consideration. 1. Did you try to drift through collapsed casing with smaller OD tools? Might be able to squeeze through without milling. Milling collapsed casing could get messy. Attempted to drift with several small OD tools including a slickline sucker rod with no success. 2. The outer annuli will either be frozen or full of diesel. Might take some work to get down and flush out hydrocarbons. Circulate bottoms up and allow hydrocarbons from below circulation depth to swap out, then circulate again. Repeat until no more hydrocarbons come to surface. If you pump cement with diesel below cement, diesel will swap out and contaminate the cement. We do not plan on pumping cement until well has been adequately circulated. 3. The proposed diagram doesn’t show that any of the 7” casing has been removed. Is the surface cement plug meant to extend to top of 7” casing stub? Removal of the 7" casing will be reflected in the finalized P&A plan and proposed well schematic. Regards CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. Bryan Sent from my iPhone On Jan 14, 2025, at 5:46 PM, Schoessler, Allie M <aschoessler@blm.gov> wrote: Bryan, We have received the draft plans for the P&A of Fish Creek. No plans are included for Cape Halkett as its just a wellhead cut-off, cement confirmation and capping. Please review and let us know if you have any comments. Planned start date of P&A activities is mid March. Thank you! Allie Schoessler Petroleum Engineer / Inspector Legacy Well Contract Office Representative Office: 907-271-3127 Cell: 907-202-2445 222 W 7th Ave Stop 13 Anchorage, AK 99513 <Fish Creek P&A Design_Jan2025.pdf> Form 3160-5 (June 2015)UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT SUNDRY NOTICES AND REPORTS ON WELLS Do not use this form for proposals to drill or to re-enter an abandoned well. Use Form 3160-3 (APD) for such proposals. FORM APPROVED OMB No. 1004-0137 Expires: January 31, 2018 5. Lease Serial No. (Instructions on page 2) 6. If Indian, Allottee or Tribe Name 7. If Unit of CA/Agreement, Name and/or No. 8. Well Name and No. 9. API Well No. 10. Field and Pool or Exploratory Area 11. Country or Parish, State SUBMIT IN TRIPLICATE - Other instructions on page 2 1. Type of Well 2. Name of Operator 3a. Address 4. Location of Well (Footage, Sec., T.,R.,M., or Survey Description) 3b. Phone No. (include area code) 12. CHECK THE APPROPRIATE BOX(ES) TO INDICATE NATURE OF NOTICE, REPORT OR OTHER DATA TYPE OF SUBMISSION TYPE OF ACTION Oil Well Gas Well Other Notice of Intent Subsequent Report Final Abandonment Notice Acidize Alter Casing Casing Repair Change Plans Convert to Injection Deepen Hydraulic Fracturing New Construction Plug and Abandon Plug Back Production (Start/Resume) Reclamation Recomplete Temporarily Abandon Water Disposal Water Shut-Off Well Integrity Other 13. Describe Proposed or Completed Operation: Clearly state all pertinent details, including estimated starting date of any proposed work and approximate duration thereof. If the proposal is to deepen directionally or recomplete horizontally, give subsurface locations and measured and true vertical depths of all pertinent markers and zones. Attach WKH%RQGXQGHUZKLFKWKHZRUNZLOOEHSHUIRQQHGRUSURYLGHWKH%RQG1RRQ¿OHZLWK%/0%,$5HTXLUHGVXEVHTXHQWUHSRUWVPXVWEH¿OHGZLWKLQGD\VIROORZLQJ FRPSOHWLRQRIWKHLQYROYHGRSHUDWLRQV,IWKHRSHUDWLRQUHVXOWVLQDPXOWLSOHFRPSOHWLRQRUUHFRPSOHWLRQLQDQHZLQWHUYDOD)RUPPXVWEH¿OHGRQFHWHVWLQJKDVEHHQ FRPSOHWHG)LQDO$EDQGRQPHQW1RWLFHVPXVWEH¿OHGRQO\DIWHUDOOUHTXLUHPHQWVLQFOXGLQJUHFODPDWLRQKDYHEHHQFRPSOHWHGDQGWKHRSHUDWRUKDVGHWHQQLQHGWKDWWKHVLWH LVUHDG\IRU¿QDOLQVSHFWLRQ THE SPACE FOR FEDERAL OR STATE OFICE USE 14. I hereby certify that the foregoing is true and correct. Name (Printed/Typed) Title DateSignature Approved by Title Date 2I¿FH Conditions of approval, if any, are attached. Approval of this notice does not warrant or certify that the applicant holds legal or equitable title to those rights in the subject lease which would entitle the applicant to conduct operations thereon. Title 18 U.S.C Section 1001 and Title 43 U.S.C Section 1212, make it a crime for any person knowingly and willfully to make to any department or agency of the United States DQ\IDOVH¿FWLWLRXVRUIUDXGXOHQWVWDWHPHQWVRUUHSUHVHQWDWLRQVDVWRDQ\PDWWHUZLWKLQLWVMXULVGLFWLRQ ✔ %XUHDX RI /DQG 0DQDJHPHQW : WK $YH $QFKRUDJH $. /$7 1 /21* : 1$ 1$ 1$ )LVK &UHHN 7HVW :HOO 1DWLRQDO 3HWUROHXP 5HVHUYH $ODVND 1RUWK 6ORSH %RURXJK $. ✔ ✔ 3OXJ DQG $EDQGRQ WKH ZHOOERUH 3OHDVH VHH WKH DWWDFKHG SURFHGXUHV =DFK 6D\HUV 3( 3HWUROHXP (QJLQHHU T Alaska State Office 03/21/2025Acting Branch ChiefROBERT BRUMBAUGH Digitally signed by ROBERT BRUMBAUGH Date: 2025.03.21 15:56:20 -08'00' Bureau of Land Management CONDITIONS OF APPROVAL FOR SUNDRY NOTICE – NOTICE OF INTENT Olgoonik Oilfield Services (OOS) Plug and Abandon Fish Creek #1 USWN: 50-103-10001-00-00 Project Specific Requirements 1. BOPE systems shall be in place and function tested when appropriate, if removal of BOP stack is necessary prior to the approved plan, the BLM P.E. shall be notified for approval. 2.BOPE test shall be witnessed by the BLM inspector and show that the equipment will work as designed. a. 10 % loss during testing is not an accepted practice. Equipment shall hold tested pressures for the 5 minutes specified on the low and high tests. 3. Test shall be recorded either by chart or pressure monitoring. 4. The plugs shall be mechanically tagged with the drill string unless otherwise approved by the BLM Engineer. If determined by BLM and OOS Engineering staff that the plugs are not adequate, cement shall be added to meet regulatory requirements. a. Collect a sample of the dry bulk blend (+/-1 Quart) & pre-pumped wet mix (+/-16 oz) Cement is not to be pumped until wet batch sample weighed above 15.4 ppg 5. All water sources utilized for mixing cement shall be tested and confirmed compatible prior to mixing cement. Results shall be submitted with the subsequent report. 6. Mud or brine shall be placed between all plugs. The mud or brine shall be an equivalent weight of the mud used during drilling operations. 7. All tubing/drill pipe used for cementing operations must be removed from the well. No tubing/drill pipe may be cemented in the well. 8. All tubing/drill pipe used for cementing should be confirmed clear of obstruction prior to pumping cement. 9. A well identification plate shall be welded into place in accordance with 43 CFR 3172.12(a)(10), however the identification shall be as follows: - Well Name - US Well Number (API Number) - Lease: US Navy - State of Alaska PTD Number 10. Backfill of excavation shall be with clean soil/gravel. A mound of material must cover the excavation areas so there are no low spots. If a low spot or additional fill is needed it shall be addressed in the summer 2025 visit. Reporting Requirements: 1. The Operator must submit a revised Sundry Notice (3160-5) for approval prior to deviating from the approved plan. An oral approval by phone may be given should circumstances warrant. However, this does not waive the written requirement which is to be submitted within 5 days of receiving verbal approval. 2. Within 30 days of the completion of operations, a Subsequent Report on Form 3160-5, Sundry Notice and Reports of Wells, shall be submitted to the BLM Alaska State Office, Branch of Energy and Minerals. Notification Requirements: 1. All notifications and changes to the submitted Notice of Intent must be reported verbally or in writing to one of the following contact listed below at the BLM Anchorage State Office, Branch of Energy and Minerals: Allie Schoessler Petroleum Engineer/Inspector 907-271-3127 aschoessler@blm.gov Stephen Garcia Senior Petroleum Engineer 907-271-3159 sbgarcia@blm.gov After Hours Contact: Allie Schoessler 907-202-2445 March 21, 2025 _________________________________ ________________________ Allie Schoessler Date BLM, Petroleum Engineer ALLIE SCHOESSLER Digitally signed by ALLIE SCHOESSLER Date: 2025.03.21 14:57:01 -08'00' Olgoonik Oilfield Services | WůƵŐĂŶĚďĂŶĚŽŶŵĞŶƚWƌŽŐƌĂŵ &ŝƐŚƌĞĞŬdĞƐƚtĞůůηϭ;Wdη͗ϭϬϬͲϭϬϬͿ &ŝƐŚƌĞĞŬ>ĞŐĂĐǇtĞůůƐZĞŵĞĚŝĂƚŝŽŶ EWZ͕ůĂƐŬĂ DĂƌĐŚϮϬϮϱ WƌĞƉĂƌĞĚĨŽƌ͗ h͘^͘ƵƌĞĂƵŽĨ>ĂŶĚDĂŶĂŐĞŵĞŶƚ EĂƚŝŽŶĂůKƉĞƌĂƚŝŽŶƐĞŶƚĞƌ WƌĞƉĂƌĞĚǇ͗ ůĞĂƌƌĞĞŬŶĞƌŐǇ͕>> ϭϯϱϲϭ<ŝĚĚZŽĂĚ ŽŶƌŽĞ͕dyϳϳϯϬϮ hŶĚĞƌŽŶƚƌĂĐƚƚŽ͗ KůŐŽŽŶŝŬKŝůĨŝĞůĚ^ĞƌǀŝĐĞƐ͕>> ϯϮϬϭ^ƚƌĞĞƚ͕^ƵŝƚĞϳϬϬ ŶĐŚŽƌĂŐĞ͕ůĂƐŬĂϵϵϱϬϯ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | General P&A Design 2 sZ^/KE,/^dKZz dĂďůĞŽĨŽŶƚĞŶƚƐ ϭ'ĞŶĞƌĂůWΘĞƐŝŐŶ......................................................................................................................................... 3 ϮƋƵŝƉŵĞŶƚΘ^ƵƉƉůŝĞƐ ..................................................................................................................................... 5 Ϯ͘ϭ^ƵƌĨĂĐĞƋƵŝƉŵĞŶƚ ................................................................................................................................... 5 ϯWΘWƌŽĐĞĚƵƌĞƐ ............................................................................................................................................... 8 ϯ͘ϭ&ŝƐŚƌĞĞŬηϭ ............................................................................................................................................ 8 dĂďůĞŽĨ&ŝŐƵƌĞƐ &ŝŐƵƌĞϭ͗&ŝƐŚƌĞĞŬηϭƵƌƌĞŶƚŽŵƉůĞƚŝŽŶ^ĐŚĞŵĂƚŝĐ͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘ϭϰ &ŝŐƵƌĞϮ͗&ŝƐŚƌĞĞŬηϭWƌŽƉŽƐĞĚWůƵŐŐŝŶŐ^ĐŚĞŵĂƚŝĐ͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘ϭϱ &ŝŐƵƌĞϯ͗&ŝƐŚƌĞĞŬηϭŶŶƵůŝŝĂŐƌĂŵ͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘ϭϲ &ŝŐƵƌĞϰ͗&ŝƐŚƌĞĞŬηϭKWZhŝĂŐƌĂŵ͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘͘ϭϳ sĞƌƐŝŽŶ η /ŵƉůĞŵĞŶƚĞĚ Ǉ ZĞǀŝƐŝŽŶ ĂƚĞ ƉƉƌŽǀĞĚ Ǉ ƉƉƌŽǀĂů ĂƚĞ ZĞĂƐŽŶ ϭ͘Ϭ ĂĐŚ^ĂǇĞƌƐ͕W͘͘ ϭͬϭϯͬϮϬϮϱ :ĂŵĞƐEƵŶůĞǇ ϭͬϭϯͬϮϬϮϱKƌŝŐŝŶĂůƉĞƌŵŝƚƐƵďŵŝƚƚĂů Ϯ͘Ϭ ĂĐŚ^ĂǇĞƌƐ͕W͘͘ ϯͬϮϬͬϮϬϮϱ :ĂŵĞƐEƵŶůĞǇ ϯͬϮϬͬϮϬϮϱZĞǀŝƐĞĚƉĞƌŵŝƚƐƵďŵŝƚƚĂů ϯ͘Ϭ ĂĐŚ^ĂǇĞƌƐ͕W͘͘ ϯͬϮϭͬϮϬϮϱ :ĂŵĞƐEƵŶůĞǇ ϯͬϮϭͬϮϬϮϱZĞǀŝƐĞĚƉĞƌŵŝƚƐƵďŵŝƚƚĂů Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | General P&A Design 3 # pounds P&A Plug and Abandon / Abandonment AOGCC Alaska Oil and Gas Conservation Commission PCB Polychlorinated biphenyls bbl barrel POOH Pull Out Of Hole BLM U.S. Bureau of Land Management ppf pounds per foot BHA Bottom Hole Assembly ppg Pounds Per Gallon BOPE Blow Out Preventer Equipment PV Plastic Viscosity BTC Buttress psi pounds per square inch BU Bottoms Up PWS Performance Work Statement CBL Casing Bond Log RIH Run In Hole CBU Circulate Bottoms Up RKB Relative Kelly Bushing Csg Casing RPM Revolutions Per Minute CO Cased Hole RU Rig Up DDR Daily Drilling Report sk / sx sack / sacks DE Drilling Engineer SLB Schlumberger DP Drill Pipe SO Slack Off DPZ Distinct Permeable Zones SOW Scope Of Work EMW Equivalent Mud Weight Tbg Tubing EOJ Every Other Joint TD Total Depth Est. Estimated TOC Top Of Cement FIT Formation Integrity Test TOL Top Of Liner ft Feet / Foot TVD True Vertical Depth HES Halliburton Energy Services TOOH Trip Out Of Hole HWDP Heavy Weight Drill Pipe UCA Ultra Sonic Compressibility Analysis IADC International Association of Drilling Contractors WBS Well Bore Schematic ID Inside Diameter WOC Weight On Cement in inch wt weight INC Inclination YP Yield Point KOP Kick Off Point KWF Kill Weight Fluid LD Lay Down LOT Leak Off Test LWD Logging While Drilling MD Measured Depth MU Make Up MWD Measurement While Drilling ND Nipple Down OOS Olgoonik Oilfield Services OD Outer Diameter OH Open Hole Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | General P&A Design 4 ϭ 'ĞŶĞƌĂůWΘĞƐŝŐŶ dŚĞƉƌŝŵĂƌǇŐŽĂůŝƐƚŽůĞĂǀĞƚŚŝƐǁĞůůĂďĂŶĚŽŶĞĚĂƐƉĞƌƚŚĞƚĂƐŬŽƌĚĞƌƐƉĞĐŝĨŝĐĂƚŝŽŶƐĂŶĚƌĞƋƵŝƌĞŵĞŶƚƐǁŚŝůĞ ƌĞĚƵĐŝŶŐƚŚĞĂŵŽƵŶƚŽĨǁĂƐƚĞŐĞŶĞƌĂƚĞĚ͘dŚĞĨŽůůŽǁŝŶŐĂƐƐƵŵƉƚŝŽŶƐǁŝůůďĞƵƐĞĚĨŽƌĞĂĐŚǁĞůůďŽƌĞŝŶƚŚĞdĂƐŬ KƌĚĞƌ͗ x ůůWΘƉƌŽĐĞĚƵƌĞƐǁŝůůďĞĂŐƌĞĞĚƵƉŽŶĂŶĚŝŶĂĐĐŽƌĚĂŶĐĞǁŝƚŚ>DƌĞŐƵůĂƚŝŽŶƐƉƌŝŽƌƚŽĞǆĞĐƵƚŝŽŶ͘ x ^ĞǀĞŶƚǇͲdǁŽŚŽƵƌƐƉƌŝŽƌƚŽWΘŽƉĞƌĂƚŝŽŶƐĐŽŵŵĞŶĐĞ͕>DƌĞƉƌĞƐĞŶƚĂƚŝǀĞƐǁŝůůďĞŶŽƚŝĨŝĞĚ͘ x ůůǁĞůůďŽƌĞĨůƵŝĚƐǁŝůůďĞƐĂŵƉůĞĚĨŽƌWƐƉĞƌWĞƌĨŽƌŵĂŶĐĞtŽƌŬ^ƚĂƚĞŵĞŶƚ;Wt^Ϳ^ĞĐƚŝŽŶϯ͘ϴ͘ϰ͘ 1.1 Design & Approach Clarifications & Requests: 1. It is OOS’ intention to use a clear brine system for the using of the thawing, circulating, providing over-balance to formation pressures, and to be used in between cement plugs. The unique nature of the extreme sub-zero surface operating temperatures make a clear brine with a crystallization temperature lower than 0°F a must have to ensure surface lines and equipment do not freeze up. While a clear brine meets the PWS 3.8.1 requirements, OOS wishes to apply for exception from 43 CFR 3172.II.N definition of Mud: “Mud for Plugging Purposes means a slurry of bentonite of similar flocculent/viscosfer, water, and additive needed to achieve the desired weight and consistency to stabilize the hole”. OOS intends to use a clear brine that does meet the density requirement; however, OOS does not intend to use a flocculent additive; rather, a polymer based viscosifier will be used that is compatible with NaCl and not as sensitive to the high pH environment as bentonite will be used. High visc sweeps will be used for hole cleaning. Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | Equipment & Supplies 5 Ϯ ƋƵŝƉŵĞŶƚΘ^ƵƉƉůŝĞƐ Ϯ͘ϭ ^ƵƌĨĂĐĞƋƵŝƉŵĞŶƚ KK^ĂŶĚŝƚƐƚĞĂŵǁŝůůƉƌŽǀŝĚĞƚŚĞĨŽůůŽǁŝŶŐǁĞůůƐƉĞĐŝĨŝĐĞƋƵŝƉŵĞŶƚ͗ x ZĂŶŐĞ///ƌŝůůŝŶŐZŝŐ o ϳϱϬ,WZĂŶŐĞ///dŽƉƌŝǀĞƌŝůůŝŶŐZŝŐ o dŽƉƌŝǀĞƌĂƚĞĚƚŽϭϳ͕ϱϬϬĨƚͲůďƐƚŽƌƋƵĞ͘ o ƌĞƐƐĞĚƚŽŚĂŶĚůĞϰ͟ǁŽƌŬƐƚƌŝŶŐƐ o ƌŝůůŝŶŐtŽƌŬƐƚƌŝŶŐ͗ϱ͕ϭϱϬ͛ŽĨϰ͟,ŝŐŚͲƚŽƌƋƵĞŚĞĂǀǇǁĂůůĚƌŝůůƐƚƌŝŶŐǁͬĞǆƚĞƌŶĂůƵƉƐĞƚƚŽŽůũŽŝŶƚƐ o ĞƉƚŚĐĂƉĂďůĞŽĨĚƌŝůůŝŶŐƵƉƚŽϱ͕ϭϱϬ͛ŽĨϴ͘ϳϱ͟ŚŽůĞ o WƵůůďĂĐŬ&ŽƌĐĞ͗ϭϴϬ͕ϬϬϬůďƐ o ϰϬϬ,WdƌŝƉůĞǆWƵŵƉĐĂƉĂďůĞŽĨϯϬϬ'WD o ^ŝŶŐůĞdĂŶŬϮϱϬďďůŵƵĚƐŬŝĚǁŝƚŚϯĐŽŵƉĂƌƚŵĞŶƚĞƋƵŝƉƉĞĚǁŝƚŚ;ϮͿĐĞŶƚƌŝĨƵŐĂůƉƵŵƉƐ͕;ϯͿ ĂŐŝƚĂƚŽƌƐ o ϮϬďďůƚƌŝƉƚĂŶŬ o ϯ͟ϯDĐŚŽŬĞŵĂŶŝĨŽůĚ;ǁͬϮĐŚŽŬĞƐͿ͕ϳϵŐĂůϯDϱͲƐƚĂƚŝŽŶĂĐĐƵŵƵůĂƚŽƌ x tĞůůŽŶƚƌŽůƋƵŝƉŵĞŶƚ͗ o ^ŚĂĨĨĞƌϵ͟ϯDŶŶƵůĂƌ o ;ϮͿϵ͟ϯD^ŚĂĨĨĞƌ'ĂƚĞZĂŵWƌĞǀĞŶƚĞƌ o ϯ͟ϯDĐŚŽŬĞŵĂŶŝĨŽůĚ;ǁͬϮĐŚŽŬĞƐͿ͕ϳϵŐĂůϯDϱͲƐƚĂƚŝŽŶĂĐĐƵŵƵůĂƚŽƌ x WŽƌƚĂďůĞĞŵĞŶƚŝŶŐƋƵŝƉŵĞŶƚ/ŶĐůƵĚŝŶŐ o ϮϬďďůĞŵĞŶƚďĂƚĐŚŵŝǆŝŶŐƵŶŝƚ o dƌŝƉůĞǆWƵŵƉƵƐĞĚĨŽƌĐĞŵĞŶƚ x &ůƵŝĚƐdĂŶŬƐ o ϮϬϬďĂƌƌĞůƐŽĨƐƚŽƌĂŐĞƚĂŶŬĐĂƉĂĐŝƚǇƚŽĐŽŶƚĂŝŶĐŝƌĐƵůĂƚĞĚǁĞůůĨůƵŝĚƐ͘ o ϰϮďďůZŝŐĞůůĂƌdĂŶŬ o tĂƐƚĞͬ^ůŽƉdĂŶŬ x ŽŝůĞƌhŶŝƚ x dƌĂŶƐĨĞƌƉƵŵƉ͕ǁŝƚŚĂĐŬƵƉWƵŵƉ͕,ĞĂƚĞƌƐ͕WŝƉĞ͕ŚŽƐĞƐ͕ǀĂůǀĞƐ͕ĨŝƚƚŝŶŐƐ x dƌĂĐŬ>ŽĂĚĞƌ x ǆĐĂǀĂƚŽƌ x tĞůůƋƵŝƉŵĞŶƚdŽŽůƐĂŶĚ,ŽƐĞWĂƌƚƐ,ŽƵƐĞ x WůƵŐĂŶĚďĂŶĚŽŶŵĞŶƚDĂƌŬĞƌ 2.2 Materials and Supplies: x Cased Hole Cement Baskets 2.2.1 Fluids Program: x Drilling Muds: Drilling muds will incorporate brine used for freeze protection and as a weighting agent. All additives will be environmentally safe and contain no heavy metals. Muds will be available on site in quantities able to contain wellbore pressure. Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | Equipment & Supplies 6 x Workover Fluids will use NaCl as a primary weighting agent. x All additives will be environmentally safe and contain no heavy metals. x Fluids will be available on site in quantities able to contain well bore pressure. 2.2.2 Cementing Program: x P&A cement will be an artic blend designed for the sub-normal temperature regimes of the planned cement setting depths. x See below Figure 3, for example UCA Testing Data: x Primary water for the cement blending is expected to be sourced from treated snow melt potable water. o If water other than potable or fresh snow melt needs to be used, a sample of the water source (lake, river, etc.) will be collected and sent to the lab for individual UCA and compatibility testing. Table 1: Laboratory Data for Artic Blend Cement Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | Equipment & Supplies 7 Figure 2: UCA for Artic Blend Cement (Thickening Time) Figure 3: UCA for Artic Blend Cement (Compressive Strength) Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 8 ϯ WΘWƌŽĐĞĚƵƌĞƐ ϯ͘ϭ &ŝƐŚƌĞĞŬηϭ &ŝƐŚƌĞĞŬtĞůůηϭǁĂƐĚƌŝůůĞĚďǇƚŚĞh͘^͘EĂǀǇŝŶϭϵϰϵ͘dŚŝƐǁĞůůǁĂƐĚƌŝůůĞĚƚŽĂdŽĨϳ͕ϬϮϬΖD͕ƚŚĞŶ ƉůƵŐŐĞĚďĂĐŬĂŶĚƐŝĚĞͲƚƌĂĐŬĞĚƚŽϯ͕Ϭϭϴ͛DǁŝƚŚĂϳΗĐĂƐŝŶŐƐƚƌŝŶŐŚĂǀŝŶŐďĞĞŶƐĞƚĂƚϯ͕ϬϭϳΖD͘ƉƌŽĚƵĐƚŝǀĞ ƐĂŶĚǁĂƐĨŽƵŶĚĂƚϯ͕ϬϬϬĨĞĞƚĂŶĚƉƌŽĚƵĐĞĚďǇƉƵŵƉŝŶŐŽŶƚŚĞǁĞůůĂƚΕϭϮKW͘/ŶϮϬϮϭƚŚĞϳ͟ƉƌŽĚƵĐƚŝŽŶ ĐĂƐŝŶŐǁĂƐĨŽƵŶĚƚŽŚĂǀĞĂĐŽůůĂƉƐĞĂƚϮϲϭ͘ϱĂŶĚϰϭϰ͘ϱĨƚD͘dŚĞǁĞůůǁĂƐĨƌĞĞǌĞƉƌŽƚĞĐƚĞĚǁŝƚŚĚŝĞƐĞůĨƌŽŵ ϰϭϰ͘ϱ͛ƚŽƐƵƌĨĂĐĞŽŶƚŚĞ/ĂŶĚƚŚĞK͘ϳͲϭͬϭϲ͟ǁĞůůŚĞĂĚǁĂƐŝŶƐƚĂůůĞĚƚŽƉƌĞǀĞŶƚŚǇĚƌŽĐĂƌďŽŶƐĨƌŽŵ ƌĞĂĐŚŝŶŐƚŚĞƐƵƌĨĂĐĞ͘dŚĞƌĞŝƐĐƵƌƌĞŶƚůǇŶŽƉƌĞƐƐƵƌĞĂƚƚŚĞƐƵƌĨĂĐĞĂŶĚŶŽŝŶĚŝĐĂƚŝŽŶŽĨŚǇĚƌŽĐĂƌďŽŶ ĞƐĐĂƉĞŵĞŶƚ͘ ϯ͘ϭ͘ϭ tĞůůƐƐƵŵƉƚŝŽŶƐ͗ x /ƚŝƐĂƐƐƵŵĞĚƚŚĂƚƚŚĞϭϭͲϯͬϰ͟ŚĂƐĂůƐŽůŽƐƐƉƌĞƐƐƵƌĞŝŶƚĞŐƌŝƚǇ͘ x KWĚĞǀŝƐĞŝƐŽŶůǇĨƵŶĐƚŝŽŶŝŶŐĂƐĂŶĞŵĞƌŐĞŶĐǇĚŝǀĞƌƚĞƌ͘ x dŚĞǁĞůůŚĂƐǁĂƚĞƌͲďĂƐĞĚĚƌŝůůŝŶŐŵƵĚŽƌǁĂƚĞƌĨƌŽŵϮ͕ϴϵϭƚŽϰϭϰ͘ϱ͛͘ x tĞůůƉƌĞƐƐƵƌĞƚĞƐƚŝŶŐĂŐĂŝŶƐƚƚŚĞǁĞůů;ĐĂƐŝŶŐƚĞƐƚƐ͕ĐĞŵĞŶƚƉƌĞƐƐƵƌĞƚĞƐƚƐ͕KWƚĞƐƚƐĂŐĂŝŶƐƚƚŚĞǁĞůů͕ ĞƚĐ͘ͿǁŝůůŶŽƚŽĐĐƵƌĚƵĞƚŽƚŚĞŬŶŽǁŶĐĂƐŝŶŐŝŶƚĞŐƌŝƚǇĨĂŝůƵƌĞĂƚϮϲϭ͘ϱĂŶĚϰϭϰ͘ϱ͛͘ x EŽƉƌĂĐƚŝĐĂůƚĞĐŚŶŝƋƵĞƐĂůůŽǁĨŽƌƉůĂĐĞŵĞŶƚŽĨĐĞŵĞŶƚďĞŚŝŶĚƚŚĞϳ͟ƉƌŽĚƵĐƚŝŽŶĐĂƐŝŶŐĨƌŽŵϵϵϲ͛ƚŽ ϭ͕Ϭϵϲ͛ƚŽĨƵůůǇƐĂƚŝƐĨǇϰϯ&ZϯϭϳϮ͘ϭϮƉůƵŐŐŝŶŐƌĞƋƵŝƌĞŵĞŶƚƐ͘dĞĂŵKůŐŽŽŶŝŬŚĂƐƉƌŽƉŽƐĞĚĂŶĂůƚĞƌŶĂƚĞ ƉƌŽƉŽƐĂů;ůƚĞƌŶĂƚŝǀĞĂŶĚͿƚŽƐƋƵĞĞǌĞĐĞŵĞŶƚŝŶƚŽƚŚŝƐĂŶŶƵůƵƐ͘dŚŝƐĂƉƉƌŽĂĐŚĂƐƐƵŵĞƐƚŚĂƚ ĐŽŵŵƵŶŝĐĂƚŝŽŶĐĂŶŽĐĐƵƌĨƌŽŵďĞůŽǁƚŚĞƐƵƌĨĂĐĞĐĂƐŝŶŐƐŚŽĞƚŽƐƵƌĨĂĐĞŽƵƚƐŝĚĞŽĨƚŚĞϳ͟ĐĂƐŝŶŐ͘ x dŚĞǁĞůůŝƐƚŚĂǁĞĚĨƌŽŵϭ͕ϬϬϬ͛ƚŽϮ͕ϴϵϭ͛ĂŶĚŶŽŽƚŚĞƌƉůƵŐƐŽƌŵĞĐŚĂŶŝĐĂůŝƐƐƵĞƐĞǆŝƚƐďĞůŽǁϰϭϰ͘ϱ͛͘ x dŚĞϳ͟ĐĂƐŝŶŐǁŝůůƉƵůůŽƵƚŽĨƚŚĞϭϭͲϯͬϰ͟ĐĂƐŝŶŐ;ĂůůŽǁŝŶŐĨŽƌŽǀĞƌͲƉƵůůƐƵƉƚŽϭϬ͕ϬϬϬůďƐͿĂƐŶĞĞĚĞĚ͘ ϯ͘ϭ͘Ϯ ĞǀŝĂƚŝŽŶZĞƋƵĞƐƚƐΘůĂƌŝĨŝĐĂƚŝŽŶƐ͗ x KK^ǁŝƐŚĞƐƚŽĐůĂƌŝĨǇƚŚĂƚŝƚŝŶƚĞŶĚƐƚŽŵĂŬĞƵƐĞŽĨĂKWƐǇƐƚĞŵĨŽƌƚŚĞƚŚĂǁŽƵƚŽĨƚŚŝƐǁĞůůďŽƌĞƚŽ ƉƌŽǀŝĚĞĂƐĂĨĞƚǇďĂƌƌŝĞƌŝŶƚŚĞĞǀĞŶƚĂŚǇĚƌĂƚĞǁĂƐƚŚĂǁĞĚŽƌĂŐĂƐďƵďďůĞǁĂƐƚŚĂǁĞĚƵƉ͘hƉŽŶ ĐŽŵƉůĞƚŝŽŶŽĨƚŚĞĐĞŵĞŶƚĂďĂŶĚŽŶŵĞŶƚŽĨƚŚĞƉĞƌĨŽƌĂƚŝŽŶƐĂŶĚƐƵďƐĞƋƵĞŶƚƉŽƐŝƚŝǀĞƚĞƐƚ͕KK^ǁŝƐŚĞƐ ƚŽĐůĂƌŝĨǇƚŚĂƚƚŚĞKWƐĐĂŶďĞƌĞŵŽǀĞĚĂƐŶĞĞĚĞĚĂƐŽƉĞƌĂƚŝŽŶƐƌĞƋƵŝƌĞ͘KWƐƚĂĐŬƌĞŵŽǀĂůƐŚĂůůŶŽƚ ŽĐĐƵƌƵŶƚŝůĂŶǇƉŽƐƐŝďůĞĂĐĐĞƐƐƚŽĨŽƌŵĂƚŝŽŶƉƌĞƐƐƵƌĞŚĂƐďĞĞŶĐŽŶĨŝƌŵĞĚƚŽďĞƐĞĂůĞĚŽĨĨĂŶĚĂƉƉƌŽǀĂů ŝƐŐŝǀĞŶĨƌŽŵƚŚĞ>DW͘͘ x EŽƉƌĞƐƐƵƌĞƚĞƐƚŝŶŐŽĨƚŚĞǁĞůůǁŝůůŽĐĐƵƌ͘dŚĞƉƌŽĚƵĐƚŝŽŶĐĂƐŝŶŐŚĂƐĂŬŶŽǁŶŝŶƚĞŐƌŝƚǇĨĂŝůƵƌĞ͘Ɛ ƐƚĂƚĞĚĂďŽǀĞ͕ŝƚŝƐĂƐƐƵŵĞĚƚŚĂƚϭϭͲϯͬϰ͟ĐĂƐŝŶŐŚĂƐůŽƐƚƉƌĞƐƐƵƌĞŝŶƚĞŐƌŝƚǇ͘dŚĞƐĂŵĞĐĂƐŝŶŐĨĂŝůƵƌĞ ŵĞĐŚĂŶŝƐŵƚŚĂƚǇŝĞůĚĞĚƚŚĞϳ͟ƉƌŽĚƵĐƚŝŽŶĐĂƐŝŶŐǁŽƵůĚĂůƐŽǇŝĞůĚƚŚĞϭϭͲϯͬϰ͟ĐĂƐŝŶŐ͘dŚĞϳ͟ĐĂƐŝŶŐ ǇŝĞůĚĞĚĨƌŽŵŽƵƚƐŝĚĞŝŶ;ŝƚĐŽůůĂƉƐĞĚͿ͘dŚĞĞǆƉĂŶĚŝŶŐǁĂƚĞƌǁĂƐĞŝƚŚĞƌŝŶƚŚĞϳ͟ǆϭϭͲϯͬϰ͟ĂŶŶƵůƵƐ͕Žƌ ŽƵƚƐŝĚĞŽĨƚŚĞϭϭͲϯͬϰ͟ĂŶĚĞǆƉĂŶĚĞĚƚŚƌŽƵŐŚďŽƚŚĐĂƐŝŶŐƐ͘dŚĞĐŽůůĂƉƐĞƌĂƚŝŶŐŽĨƚŚĞϳ͟ĐĂƐŝŶŐŝƐ ϯ͕ϮϳϬƉƐŝ͘dŚĞϭϭͲϯͬϰ͟ďƵƌƐƚƉƌĞƐƐƵƌĞƌĂƚŝŶŐŝƐϯ͕ϬϳϬƉƐŝ;ůĞƐƐƚŚĂŶƚŚĞϳ͟ĐĂƐŝŶŐ͛ƐĐŽůůĂƉƐĞͿ͘/ĨŝĐĞ ĞǆƉĂŶĚĞĚŝŶƚŚĞĂŶŶƵůƵƐ͕ƚŚĞĞǆƉĂŶƐŝŽŶĞǆĐĞĞĚĞĚƚŚĞϳ͟ĐŽůůĂƉƐĞƌĂƚŝŶŐŽĨϯ͕ϮϳϬƉƐŝĂŶĚƚŚĞƌĞďǇŵŽƐƚ ůŝŬĞůǇďƵƌƐƚƚŚĞϭϭͲϯͬϰ͟ĐĂƐŝŶŐ͘ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 9 ϯ͘ϭ͘ϯ &ůƵŝĚƐWƌŽŐƌĂŵ͗ ,ŽůĞ^ŝǌĞ͗&ůƵŝĚdǇƉĞ͗ ϲ͘ϯϲϲ͟/ĐƐŐ EĂůDŽŶŽǀĂůĞŶƚƌŝŶĞƐǇƐƚĞŵ ĞŶƐŝƚǇ ;ƉƉŐͿ &ƵŶŶĞů sŝƐĐŽƐŝƚǇ Ws zW ϲZWD 'Ğů^ƚƌĞŶŐƚŚ ^ĂůŝŶŝƚǇ W, ϵ͘Ϭʹϵ͘ϴ ϮϲͲϯϬ ϭ͘ʹϮ͘Ϯ ʹ ʹ ʹ ʹ ϲ͕ϬϬϬͲϭϳϭ͕ϬϬϬ ϳ͘ϱͲϵ ϯ͘ϭ͘ϰ ǀĂůƵĂƚŝŽŶWƌŽŐƌĂŵ͗ ϳ͟ĂƐĞĚ^ĞĐƚŝŽŶ͗>ŽŐŐŝŶŐ^ƵŝƚĞ͗ Dtͬ>t͗EŽŶĞ͘ KƉĞŶ,ŽůĞ>ŽŐƐ͗EŽŶĞ͘ ĂƐĞĚ,ŽůĞ>ŽŐƐ͗EŽŶĞ͘ ϯ͘ϭ͘ϱ ĞŵĞŶƚŝŶŐWƌŽŐƌĂŵ͗ WΘWůƵŐĞŵĞŶƚ :Žď η ,ŽůĞ ^ŝǌĞ ƐŐ ^ŝǌĞ dǇƉĞĞŶƐŝƚǇzŝĞůĚйǆĐĞƐƐsŽůƵŵĞƐƚ͘dK 1N/A7”Class G Artic Blend 15.4 ppg – 16.0 ppg0.93 ft3/sx10% CH8.7 bbl2,691’ MD 2N/A7”Class G Artic Blend 15.4 ppg – 16.0 ppg0.93 ft3/sx10% CH19.2 bbl946’ MD 3N/A7”Class G Artic Blend 15.4 ppg – 16.0 ppg0.93 ft3/sx10% CH32.3 bblSurface ĚĚŝƚŝǀĞƐ͗ůĂƐƐ'ƌƚŝĐůĞŶĚ͗Ϭ͘ϭϯϬŐĂůͬƐŬƌĞƚĂƌĚĞƌ͕ĂƌƚŝĐďůĞŶĚǇŝĞůĚŽĨϬ͘ϵϯĨƚϯͬƐŬĂƚϭϱ͘ϳƉƉŐ ĚĞŶƐŝƚǇ͘ ϯ͘ϭ͘ϲ tĞůůŽŶƚƌŽůWƌŽŐƌĂŵ͗ KWϵ͟ϯDŶŶƵůĂƌ ϵ͟ϯD'ĂƚĞZĂŵƐ hƉƉĞƌZĂŵʹϰ͟ƉŝƉĞƌĂŵ >ŽǁĞƌZĂŵʹďůŝŶĚƌĂŵ DƵĚƌŽƐƐ͕^ŝŶŐůĞ'ĂƚĞ </>>>/EϮ͟>ŝŶĞǁͬϭĞĂĐŚϮ͟ϯDDĂŶƵĂůsĂůǀĞƐ ,K<>/EϮ͟>ŝŶĞǁͬϭĞĂĐŚϮ͟ϯDDĂŶƵĂůsĂůǀĞ ,K<DE/&K>ϯDŚŽŬĞDĂŶŝĨŽůĚ͕;ǆϮͿŵĂŶƵĂůĂĚũƵƐƚĂďůĞĐŚŽŬĞƐ͕Ϯ͟ŚŽŬĞůŝŶĞǁͬϮ͟ ŝŶůĞƚĂŶĚϮ͟ŽƵƚůĞƚ͕ĂŶĚϱĞĂĐŚϮͲϭͬϭϲ͟ϭϱDǀĂůǀĞƐ;ϱƚŽƚĂůͿ hDh>dKZϳϱŐĂůůŽŶƌĞƐĞƌǀŽŝƌ͕ϱĞĂĐŚϭϱŐĂůůŽŶďŽƚƚůĞƐ͕ŶŝƚƌŽŐĞŶďĂĐŬƵƉ͕ƉŶĞƵŵĂƚŝĐ ĂŶĚĞůĞĐƚƌŝĐƉƵŵƉƐ ZDKdKWKEdZK>>ŽĐĂƚĞĚĂƚƌŝůůĞƌ͛Ɛ^ƚĂƚŝŽŶ DĂǆŝŵƵŵŶƚŝĐŝƉĂƚĞĚ,W ϳϵϱƉƐŝсϱ͘ϬϳƉƉŐǆϬ͘ϬϱϮǆϯ͕ϬϭϳĨƚ Ύ;ƐŚŽƵůĚƚŚĞĨƵůůĨůƵŝĚĐŽůƵŵŶĐŽŵƉůĞƚĞůǇĞǀĂĐƵĂƚĞĚͿ DĂǆŝŵƵŵŶƚŝĐŝƉĂƚĞĚ ^ƵƌĨĂĐĞWƌĞƐƐƵƌĞ;D^WͿ ϭϯϭƉƐŝсϳϵϱƉƐŝʹ;Ϭ͘ϮϮƉƐŝͬĨƚǆϯ͕ϬϭϳĨƚͿ Ύ;ƐŚŽƵůĚƚŚĞĨƵůůĨůƵŝĚĐŽůƵŵŶĐŽŵƉůĞƚĞůǇĞǀĂĐƵĂƚĞĚͿ WůĂŶŶĞĚKWdĞƐƚWƌĞƐƐƵƌĞ ϵ͟ZŝŐKWϮϱϬƉƐŝůŽǁͬϭ͕ϬϬϬƉƐŝŚŝŐŚͲĨŽƌϱŵŝŶĞĂĐŚ ĂƐŝŶŐdĞƐƚWƌĞƐƐƵƌĞ;ϳ͟ͿŶŽŶĞ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 10 3.1.7 Site & Well Prep Operations: ϭ͘ EŽƚŝĨǇƚŚĞŽŶƚƌĂĐƚŝŶŐKĨĨŝĐĞƌ͛ƐZĞƉƌĞƐĞŶƚĂƚŝǀĞ;KZͿĂƚůĞĂƐƚϳϮŚŽƵƌƐƉƌŝŽƌƚŽƐƚĂƌƚŝŶŐƚŚĞWΘ ƉƌŽĐĞƐƐƚŽĂůůŽǁĂ>DƌĞƉƌĞƐĞŶƚĂƚŝǀĞďĞƉƌĞƐĞŶƚƚŽǁŝƚŶĞƐƐƚŚĞƉůƵŐŐŝŶŐŽƉĞƌĂƚŝŽŶƐ Ϯ͘ DŽǀĞŝŶĂůůƐƵƉƉŽƌƚĞƋƵŝƉŵĞŶƚĂŶĚZŝŐhƉ;ZhͿƉƌĞƉĞƋƵŝƉŵĞŶƚ ϯ͘ ůĞĂŶĂŶĚĐůĞĂƌĂƌŽƵŶĚĐĂƐŝŶŐƚŽĂůůŽǁEhŽĨǁĞůůŚĞĂĚ͘ ϰ͘ ĨƚĞƌĂůůƉƌĞƐƐƵƌĞŝƐďůĞĞĚŽĨĨ͕ŵŽŶŝƚŽƌƉƌĞƐƐƵƌĞĨŽƌϮϰŚŽƵƌƐ͘ o ĨƚĞƌϮϰŚŽƵƌƐŽĨŶŽƉƌĞƐƐƵƌĞ͕ĐŽŶƚĂĐƚW͘͘ĨŽƌĂƉƉƌŽǀĂů͘ ϱ͘ EϯͲϭͬϴ͟ǀĂůǀĞĂŶĚϳͲϭͬϭϲ͟ǆϯͲϭͬϴ͟ĨůĂŶŐĞ͕ĞǆƉŽƐŝŶŐϳͲϭͬϭϲ͟ϯDĨůĂŶŐĞůŽŽŬŝŶŐƵƉ͘ ϲ͘ ƵƚͲŽĨĨĞǆŝƐƚŝŶŐϳͲϭͬϭϲ͟ƐƚĂƌƚŝŶŐĨůĂŶŐĞ͕ǁĞůĚŽŶŶĞǁϵ͟ϯDǁĞůůŚĞĂĚǁŝƚŚKWƚĞƐƚƉůƵŐŝŶƚĞƌŶĂůƉƌŽĨŝůĞ ĂŶĚ>^ƚŽƚŚĞϭϭͲϯͬϰ͟ƐƵƌĨĂĐĞĐĂƐŝŶŐ͘ o WůĞĂƐĞŶŽƚĞƚŚĂƚƚŚĞϳ͟ĐĂƐŝŶŐǁŝůůŶĞĞĚƚŽďĞĐƵƚůŽǁĞƌƚŚĂŶƚŚĞƚĞƐƚŝŶŐƉůƵŐƉƌŽĨŝůĞĨŽƌƚŚĞϵ͟ ƚĞƐƚƉůƵŐ͘ ϳ͘ Ehϵ͟KW͘ 3.1.8 Plugging Operations: ϴ͘ ƐƐĞŵďůĞZĂŶŐĞϯƌŝůůŝŶŐZŝŐ͘ŽŵƉůĞƚĞǁŝŶƚĞƌŝǌĂƚŝŽŶƐ͕EhďŽŝůĞƌĂŶĚƵŶƚŚĂǁĐŽŵƉŽŶĞŶƚƐ͘ ϵ͘ ZĂŝƐĞŵĂƐƚĂŶĚƉƌĞƉĂƌĞĨŽƌŽƉĞƌĂƚŝŽŶƐ͘ ϭϬ͘ dĞƐƚϵ͟KWĂŐĂŝŶƐƚƚĞƐƚƉůƵŐ͘ ŝͿ ^ĞƚƚĞƐƚƉůƵŐŝŶƐŝĚĞŽĨϭϭͲϯͬϰ͟ĐĂƐŝŶŐŚĞĂĚǁŝƚŚƐƉĞĐŝĂůƚǇŵĂĐŚŝŶĞĚƌĞĚƵĐĞƌďƵƐŚŝŶŐ͘ ŝŝͿ ŶƐƵƌĞƉůƵŐŝƐŚĞůĚŝŶƉůĂĐĞǁŝƚŚƚĞƐƚũŽŝŶƚ;ϰ͟ĚƌŝůůWŝƉĞͿĚƵƌŝŶŐƚŚĞKWƚĞƐƚŝŶŐ͘ ŝŝŝͿ KƉĞŶƚŚĞϮ͟KǀĂůǀĞƚŽĞŶƐƵƌĞŶŽƚƌĂƉƉĞĚƉƌĞƐƐƵƌĞƵŶĚĞƌƚŚĞƚĞƐƚƉůƵŐ͘ ŝǀͿ WĞƌĨŽƌŵWƌĞƐƐƵƌĞdĞƐƚŽŶƚŚĞĨŽůůŽǁŝŶŐĐŽŵƉŽŶĞŶƚƐƚŽϮϱϬƉƐŝůŽǁĂŶĚϭ͕ϬϬϬƉƐŝŚŝŐŚĨŽƌϱŵŝŶ ĞĂĐŚ ;ϭͿ WŝƉĞZĂŵƐ ;ϮͿ ŶŶƵůĂƌ ;ϯͿ ;ǆϭͿ<ŝůů>ŝŶĞsĂůǀĞ ;ϰͿ ;ǆϭͿŚŽŬĞ>ŝŶĞsĂůǀĞ ¾ EŽŵŽƌĞƚŚĂŶϭϬйůŽƐƐƉĞƌϱŵŝŶŝƐĂĐĐĞƉƚĂďůĞ ǀͿ &ƵŶĐƚŝŽŶdĞƐƚ,ZƚŽĞŶƐƵƌĞŽƉĞŶͬĐůŽƐĞǁŽƌŬŝŶŐ o >DƚŽǁŝƚŶĞƐƐ͘ ϭϭ͘ sĞƌŝĨǇĐƵƌƌĞŶƚĨůƵŝĚĚĞƉƚŚŝŶǁĞůů͘ŽůůĞĐƚĨůƵŝĚƐĂŵƉůĞƐǁŝƚŚĂďĂŝůĞƌƉĞƌ>DdKƌĞƋƵŝƌĞŵĞŶƚƐϯ͘ϴ͘ϰ͘/Ĩ ĨůƵŝĚƐĂƌĞĨƌŽǌĞŶĐŽůůĞĐƚƐĂŵƉůĞƐĚƵƌŝŶŐĐŝƌĐƵůĂƚŝŽŶ͘ ϭϮ͘ WhŵƵůĞƐŚŽĞĂŶĚϰ͟ĚƌŝůůƉŝƉĞ͘ ϭϯ͘ Z/,ƚŽϮϲϭ͛ƚĂŬŝŶŐĐĂƵƚŝŽŶĨŽƌƌƵŶŶŝŶŐŝŶƚŽĂĐĂƐŝŶŐĐŽůůĂƉƐĞ͘ĂƌĞĨƵůůǇZ/,ƉĂƐƚϮϲϭ͛ƚŽϰϭϰ͛͘ ϭϰ͘ ŝƌĐƵůĂƚĞďƌŝŶĞƚŽĚŝƐƉůĂĐĞĚŝĞƐĞůĨůƵŝĚ͘ Ă͘ ŶƐƵƌĞƚŽŽƉĞŶKǀĂůǀĞŝƐŽƉĞŶƚŽĚŝƐƉůĂĐĞďŽƚŚ/ĂŶĚKŽĨĚŝĞƐĞů͘ ϭϱ͘ WhŵŝůůŝŶŐ, ϭϲ͘ Z/,ĂŶĚƌĞĂŵͬĐůĞĂŶŽƵƚĐĂƐŝŶŐĐŽůůĂƉƐĞĂƚϮϲϭ͛͘WKK,͘ ϭϳ͘ WhDŝůůŝŶŐ,͘ ϭϴ͘ Z/,ƚŽϰϭϰ͛͘ ϭϵ͘ DŝůůнͬͲϰĨƚŶŽƚŝŶŐŵŝůůŝŶŐƉĂƌĂŵĞƚĞƌƐĞǀĞƌǇϲ͘͟ Ă͘ /ĚĞĂůůǇƚŽƌƋƵĞĐůĞĂŶƐƵƉŝŶĚŝĐĂƚŝŶŐƚŚĞŵŝůůŝŶŐŚĂƐďĞĞŶĐŽŵƉůĞƚĞĚƉƌŝŽƌƚŽŵŝůůŝŶŐĞŶƚŝƌĞϰ͛ ƐĞĐƚŝŽŶ͘ ď͘ ŝƌĐƵůĂƚĞŚŝŐŚǀŝƐĐƉŝůůĂŶĚǁĂƚĐŚƌĞƚƵƌŶƐĨŽƌŵĞƚĂůĚĞďƌŝƐ͘ ϮϬ͘ WKK,͕>Dŝůů͘ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 11 Ϯϭ͘ WhŵƵůĞƐŚŽĞŽŶϰ͟ǁŽƌŬƐƚƌŝŶŐ͘ ϮϮ͘ Z/,ǁŝƚŚϰ͟ǁŽƌŬƐƚƌŝŶŐ͘dŚĂǁĂƐŶĞĐĞƐƐĂƌǇƚŽĂĚĞƉƚŚŽĨнͬͲϭ͕ϬϬϬ͛ŽƌƚŚĞďĂƐĞŽĨƚŚĞƉĞƌŵĂĨƌŽƐƚ͘ Ă͘ ^,Kh>ƚŚĞǁŽƌŬƐƚƌŝŶŐŶŽƚďĞĂďůĞƚŽĞŶƚĞƌƚŚĞϳ͟ĐĂƐŝŶŐƉĂƐƚϰϭϰͲϰϭϴ͛ŵŽǀĞƚŽĂůƚĞƌŶĂƚŝǀĞ WΘƉůĂŶ͕ƚŚĞŶƉůĂŶŝĨƵŶƐƵĐĐĞƐƐĨƵůǁŝƚŚWůĂŶ͘ EŽƚŝĨǇ>DŶŐŝŶĞĞƌĂŶĚKZƚŽŐĞƚĂƉƉƌŽǀĂůƉƌŝŽƌƚŽƉƌŽĐĞĞĚŝŶŐǁŝƚŚůƚĞƌŶĂƚŝǀĞ͘ ůƚĞƌŶĂƚŝǀĞWůĂŶ͗ ͘ WhƉƌĞǀŝŽƵƐŵŝůůŝŶŐ,ĂŶĚǁŽƌŬƚŚƌŽƵŐŚĐĂƐŝŶŐĐŽůůĂƉƐĞƐĂƐŝŶĐƵƌƌĞĚ͘ŽŶƚŝŶƵĞŵĂŬŝŶŐƉƌŽŐƌĞƐƐĚŽǁŶ ŚŽůĞŝŶƚŚŝƐĨĂƐŚŝŽŶƵŶůĞƐƐŶŽƚĂďůĞĞǆĐĞƐƐǀŝďƌĂƚŝŽŶͬĐŚĂƚƚĞƌŝŶŐŝƐŶŽƚĞĚĨƌŽŵĂƐĞĐƚŝŽŶŽĨůŽŽƐĞϳ͟ĐĂƐŝŶŐ͘/Ĩ ĂďůĞƚŽŐĞƚƚŽ,ƉĂƐƚƚŚĞƉĞƌŵĂĨƌŽƐƚ͕ƉƌŽĐĞĞĚĐůĞĂŶŝŶŐŽƵƚǁĞůůƉĞƌƐƚĞƉϮϯ͘ ůƚĞƌŶĂƚŝǀĞWůĂŶ͗ ͘ DhŵĞĐŚĂŶŝĐĂůĐƵƚƚĞƌ͕Z/,ƚŽŽďƐƚƌƵĐƚŝŽŶ͕ƉĞƌĨŽƌŵŵĞĐŚĂŶŝĐĂůĐƵƚĂƚŽďƐƚƌƵĐƚŝŽŶ͘ ͘ dĂŬĞĐĂƵƚŝŽŶǁŚĞŶĞŶƚĞƌŝŶŐƚŚĞǁĞůůďŽƌĞƚŽŶŽƚŐĞƚƚŚĞŬŶŝǀĞƐĐĂƵŐŚƚǁŚŝůĞZ/,ƉĂƐƚĂŶǇŬŶŽǁŶ ŵĞĐŚĂŶŝĐĂůůǇĚĞŐƌĂĚĞĚĂƌĞĂƐƐƵĐŚĂƐƚŚĞϮϲϭ͛ƚŝŐŚƚƐƉŽƚ͕ĂŶĚƚŚĞϰϭϰ͛ĐŽůůĂƉƐĞ͘ ͘ ƵƚĂŶĚƉƵůůϳ͟ĐĂƐŝŶŐĨƌŽŵĐƵƚƚŽƐƵƌĨĂĐĞƚŚƌŽƵŐŚĞǆŝƐƚŝŶŐǁĞůůŚĞĂĚĂŶĚKWĨƌŽŵϰϭϱ͛ƚŽƐƵƌĨĂĐĞ͘ ĂͿ ŵŝŶŝŵƵŵŽĨϮϱϬ͛ŽĨϳ͟ĐĂƐŝŶŐŶĞĞĚƚŽďĞƌĞŵŽǀĞĚ͘ ďͿ ĞƉƌĞƉĂƌĞĚƚŽŚĂŶĚůĞϳ͟ĐĂƐŝŶŐĂƚƐƵƌĨĂĐĞƚŽ>͘ ͘ DĂŬĞĐƵƚ͕ĂŶĚWKK,ĂŶĚ>ϳ͟ĐĂƐŝŶŐĨŝƐŚ͘ ͘ WƌŽĐĞĞĚǁŝƚŚƚŚĂǁŝŶŐŽƉĞƌĂƚŝŽŶƉĞƌƐƚĞƉϮϯ͘ ĂͿ ŶƚƌǇŝŶƚŽƚŚĞϳ͟ĐĂƐŝŶŐƐƚƵďůŽŽŬŝŶŐƵƉǁŝůůŶĞĞĚƚŽďĞƉĞƌĨŽƌŵĞĚ͘dĂŬĞĐĂƵƚŝŽŶĞŶƚĞƌŝŶŐĂŶĚĞǆŝƚŝŶŐ ƚŚŝƐůŽĐĂƚŝŽŶĚƵĞƚŽƚŚĞŐĞŽŵĞƚƌǇĐŚĂŶŐĞ͘ Ϯϯ͘ ŽŶƚŝŶƵĞƚŽƚŚĂǁĂŶĚŽƌĐŝƌĐƵůĂƚĞĐĂƐŝŶŐĐůĞĂŶƵŶƚŝůƚŚĞďŽƚƚŽŵŽĨƚŚĞϭϭͲϯͬϰ͟ĐĂƐŝŶŐŚĂƐďĞĞŶƌĞĂĐŚĞĚ ĂƚнͬͲϭ͕Ϭϰϲ͛͘ Ϯϰ͘ h͘ Ϯϱ͘ ŽŶƚŝŶƵĞZ/,ĂŶĚĐŝƌĐƵůĂƚĞǁŝƚŚŚĞĂƚĞĚďƌŝŶĞƐǇƐƚĞŵǁŚŝůĞƚƌŝƉƉŝŶŐŝŶƚŚĞŚŽůĞƚŽϮ͕ϴϵϭΖDĚŝƐƉůĂĐŝŶŐ ŚŽůĞǁŝƚŚΕϵ͘ϱƉƉŐŵƵĚ͘ Ă͘ sĞƌŝĨǇĐƵƌƌĞŶƚĨůƵŝĚĚĞƉƚŚŝŶǁĞůů͘ŽůůĞĐƚĨůƵŝĚƐĂŵƉůĞƐǁŝƚŚĂďĂŝůĞƌƉĞƌ>DƌĞƋƵŝƌĞŵĞŶƚƐ͘/Ĩ ĨůƵŝĚƐĂƌĞĨƌŽǌĞŶĐŽůůĞĐƚƐĂŵƉůĞƐĚƵƌŝŶŐĐŝƌĐƵůĂƚŝŽŶ Ϯϲ͘ ŝƌĐƵůĂƚĞ͕ƚŚĞŶŵŽŶŝƚŽƌǁĞůůĨŽƌϯϬŵŝŶƵƚĞƐƚŽĞŶƐƵƌĞŶŽĨůŽǁ͘ Ϯϳ͘ ZŝŐƵƉĐĞŵĞŶƚŝŶŐĞƋƵŝƉŵĞŶƚĂŶĚĐĞŵĞŶƚĨƌŽŵϮ͕ϴϵϭ͛ƚŽϮ͕ϲϵϭ͛DƚŚƌŽƵŐŚƚŚĞǁŽƌŬƐƚƌŝŶŐƵƐŝŶŐƚŚĞ ďĂůĂŶĐĞƉůƵŐŵĞƚŚŽĚ͘ Ϯϴ͘ tKƚŝůůhƐŚŽǁƐхϱϬϬƉƐŝĐŽŵƉƌĞƐƐŝǀĞƐƚƌĞŶŐƚŚ;ƉůĂŶŶŝŶŐhƐŚŽǁƐϲŚŽƵƌƐ͕ǁĂŝƚĂƚůĞĂƐƚϭϮŚƌƐ͘ ƚŽĂĐĐŽƵŶƚĨŽƌƌĞĂůǁŽƌůĚĐŽŶĚŝƚŝŽŶƐͿ͘ Ϯϵ͘ Z/,ƚŽƚŽƉŽĨWůƵŐ͕ƚĂŐƉůƵŐ͕ƐƚĂĐŬϱϬϬůďƐƚŽĐŽŶĨŝƌŵƉůƵŐ͘WKK,͘ o dĂŐŵƵƐƚďĞƚŽĂŚĂƌĚƚĂŐǁŚĞƌĞƐůĂĐŬŽĨĨǁĞŝŐŚƚŵĂŝŶƚĂŝŶĞĚǁŝƚŚŶŽŵŽǀĞŵĞŶƚ͘ o >DƚŽǁŝƚŶĞƐƐ͘ ϯϬ͘ DhŵĞĐŚĂŶŝĐĂůƉƵŶĐŚƚŽŽůĂŶĚZ/,ƚŽϭ͕ϭϬϲ͛;ϲϬ͛ďĞůŽǁƚŚĞƐƵƌĨĂĐĞĐĂƐŝŶŐƐŚŽĞͿ͘WƵŶĐŚϳ͟ĐĂƐŝŶŐĂƚ нͬͲϭ͕ϭϬϲ͛͘WKK, EŽƚŝĨǇ>DŶŐŝŶĞĞƌĂŶĚKZƚŽŐĞƚĂƉƉƌŽǀĂůƉƌŝŽƌƚŽƉƌŽĐĞĞĚŝŶŐǁŝƚŚůƚĞƌŶĂƚŝǀĞ͘ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 12 ůƚĞƌŶĂƚŝǀĞWůĂŶ͗ ϯϭ͘ DhddĞŵĞŶƚZĞƚĂŝŶĞƌΘZ/,ƚŽнͬͲϭϬ͛ĂďŽǀĞĐĂƐŝŶŐƉƵŶĐŚ͘^ĞƚĐŵƚƌĞƚĂŝŶĞƌ͕ƉƌĞƐƐƵƌĞƵƉĚŽǁŶ ǁŽƌŬƐƚƌŝŶŐǁŝƚŚK;ϳ͟ǆϭϭͲϯͬϰ͟ͿǀĂůǀĞƐŽƉĞŶ͘ƐƚĂďůŝƐŚĐŝƌĐƵůĂƚŝŽŶƚŚƌŽƵŐŚϳ͟ĐĂƐŝŶŐŚŽůĞƐ͘ ůƚĞƌŶĂƚŝǀĞWůĂŶ͗ &͘ DhĂƐƚ/ƌŽŶĞŵĞŶƚZĞƚĂŝŶĞƌ;/ZͿ͕Z/,ĂŶĚƐĞƚнͬͲϭϬ͛ĂďŽǀĞĐĂƐŝŶŐƉƵŶĐŚ͘ ^ĞƚĐŵƚƌĞƚĂŝŶĞƌ͕ƉƌĞƐƐƵƌĞ ƵƉĚŽǁŶǁŽƌŬƐƚƌŝŶŐǁŝƚŚK;ϳ͟ǆϭϭͲϯͬϰ͟ͿǀĂůǀĞƐŽƉĞŶ͘ƐƚĂďůŝƐŚĐŝƌĐƵůĂƚŝŽŶƚŚƌŽƵŐŚϳ͟ĐĂƐŝŶŐŚŽůĞƐ͘ ϯϮ͘ ^ƋƵĞĞǌĞĐĞŵĞŶƚũŽďƚŚƌŽƵŐŚĐĂƐŝŶŐƉƵŶĐŚĨƌŽŵϭ͕ϭϬϲ͛ƚŽϵϰϲ͛;ϭϲϬ͛ͿŝŶƚŽKƚĂŬŝŶŐƌĞƚƵƌŶƐƚŚƌŽƵŐŚ KǀĂůǀĞ͘^ƚŝŶŐŽƵƚŽĨƌĞƚĂŝŶĞƌ͕ůĂǇďĂůĂŶĐĞĚĐĞŵĞŶƚƉůƵŐĨƌŽŵƚŽƉŽĨƌĞƚĂŝŶĞƌ;ϭ͕Ϭϵϲ͛ͿƚŽϵϰϲ͛ǁŝƚŚ ƉĞƌŵĂĨƌŽƐƚĐĞŵĞŶƚƚŚƌŽƵŐŚƚŚĞǁŽƌŬƐƚƌŝŶŐ͘ ϯϯ͘ WKK,ĂďŽǀĞƉůƵŐƚŽнͬͲϳϰϵΖD͕hƚŽĞŶƐƵƌĞǁŽƌŬƐƚƌŝŶŐĐůĞĂƌ͘tKƚŝůůhƐŚŽǁƐхϱϬϬƉƐŝ ĐŽŵƉƌĞƐƐŝǀĞƐƚƌĞŶŐƚŚ;ƉůĂŶŶŝŶŐhƐŚŽǁƐϲŚŽƵƌƐ͕ǁĂŝƚĂƚůĞĂƐƚϭϮŚƌƐ͘ƚŽĂĐĐŽƵŶƚĨŽƌƌĞĂůǁŽƌůĚ ĐŽŶĚŝƚŝŽŶƐͿ͘ ϯϰ͘ Z/,ƚŽƚŽƉŽĨWůƵŐ͕ƚĂŐƉůƵŐ͕ƐƚĂĐŬϱϬϬůďƐƚŽĐŽŶĨŝƌŵƉůƵŐ͘WKK,͘ o dĂŐŵƵƐƚďĞƚŽĂŚĂƌĚƚĂŐǁŚĞƌĞƐůĂĐŬŽĨĨǁĞŝŐŚƚŵĂŝŶƚĂŝŶĞĚǁŝƚŚŶŽŵŽǀĞŵĞŶƚ͘ o >DƚŽǁŝƚŶĞƐƐ͘ ůƚĞƌŶĂƚŝǀĞWůĂŶ͗ ͘ DhŵĞĐŚĂŶŝĐĂůĐƵƚƚĞƌ͕Z/,ƚŽϰϭϱ͕͛ƉĞƌĨŽƌŵŵĞĐŚĂŶŝĐĂůĐƵƚĂƚϰϭϱ͛͘ ͘ dĂŬĞĐĂƵƚŝŽŶǁŚĞŶĞŶƚĞƌŝŶŐƚŚĞǁĞůůďŽƌĞƚŽŶŽƚŐĞƚƚŚĞŬŶŝǀĞƐĐĂƵŐŚƚǁŚŝůĞZ/,ƉĂƐƚĂŶǇŬŶŽǁŶ ŵĞĐŚĂŶŝĐĂůůǇĚĞŐƌĂĚĞĚĂƌĞĂƐƐƵĐŚĂƐƚŚĞϮϲϭ͛ƚŝŐŚƚƐƉŽƚ͕ĂŶĚƚŚĞϰϭϰ͛ĐŽůůĂƉƐĞ͘ ͘ ƵƚĂŶĚƉƵůůϳ͟ĐĂƐŝŶŐĨƌŽŵĐƵƚƚŽƐƵƌĨĂĐĞƚŚƌŽƵŐŚĞǆŝƐƚŝŶŐǁĞůůŚĞĂĚĂŶĚKWĨƌŽŵϰϭϱ͛ƚŽƐƵƌĨĂĐĞ͘ ĂͿ ŵŝŶŝŵƵŵŽĨϮϱϬ͛ŽĨϳ͟ĐĂƐŝŶŐŶĞĞĚƚŽďĞƌĞŵŽǀĞĚ͘ ďͿ ĞƉƌĞƉĂƌĞĚƚŽŚĂŶĚůĞϳ͟ĐĂƐŝŶŐĂƚƐƵƌĨĂĐĞƚŽ>͘ ͘ DĂŬĞĐƵƚ͕ĂŶĚWKK,ĂŶĚ>ϳ͟ĐĂƐŝŶŐĨŝƐŚ͘ ϯϱ͘ WhĐĞŵĞŶƚƉůĂƚĨŽƌŵ͕Z/,ƚŽнͬͲϮϱϬ͛DĂŶĚƐĞƚƉůĂƚĨŽƌŵ͕ĚƵŵƉƐĂŶĚŽŶƚŽƉŽĨƉůƵŐƉĞƌƐƉĞĐƐŚĞĞƚ͘ ϯϲ͘ WKK,͕>ƌƵŶŶŝŶŐĂƐƐĞŵďůǇ͕Z/,ŽƉĞŶĞŶĚĞĚƚŽнͬͲϭϬͲϮϬ͛ĂďŽǀĞƉůĂƚĨŽƌŵ͘ ϯϳ͘ ZŝŐƵƉĐĞŵĞŶƚŝŶŐĞƋƵŝƉŵĞŶƚĂŶĚĐĞŵĞŶƚĨƌŽŵϮϱϬ͛DƚŽƐƵƌĨĂĐĞǁŝƚŚϯϮ͘ϯďďůƐŽĨƉĞƌŵĂĨƌŽƐƚ ĐĞŵĞŶƚƚŚƌŽƵŐŚƚŚĞǁŽƌŬƐƚƌŝŶŐƉƵŵƉŝŶŐƵŶƚŝůĐůĞĂŶĐĞŵĞŶƚŝƐŽďƐĞƌǀĞĚĂƚƐƵƌĨĂĐĞ͘ ϯϴ͘ EKW͘ƵƚŽĨĨϭϭͲϯͬϰ͟ƐƚĂƌƚŝŶŐŚĞĂĚ͘ZĞŵŽǀĞĨƌŽŵĐĞůůĂƌ͘ ϯϵ͘ &ůƵƐŚĂůůƐƵƌĨĂĐĞĞƋƵŝƉŵĞŶƚ͘ZĨůŽǁƉĂŶ͕ƉƌĞƉĂƌĞƌŝŐĨŽƌƐŬŝĚ͘ĞŐŝŶƌŝŐĚŽǁŶŽĨĐŚŽŬĞ͕ŚĂƌĚůŝŶĞ͘ ϰϬ͘ ZhĐŽŶƚĂŝŶŵĞŶƚƚĂŶŬŝŶĐĞůůĂƌƚŽƚĂŬĞƌĞƚƵƌŶƐŝŶƚŽǁŚŝůĞƉĞƌĨŽƌŵŝŶŐƐƵƌĨĂĐĞĐĞŵĞŶƚũŽďƐ͘ ϰϭ͘ Z/,ǁŝƚŚв͟ǁŽƌŬƐƚƌŝŶŐƚŽнͬͲϭϬϬ͛ŽŶĂůůŽƉĞŶĂŶŶƵůŝ͘ŵŝŶŝŵƵŵŽĨϱϬ͛ŝƐƌĞƋƵŝƌĞĚ͘ Ă͘ ĞƉƌĞƉĂƌĞĚƚŽƉůĂĐĞĐĞŵĞŶƚŝŶĂůůϯĂŶŶƵůŝĂƐƚŚĞŚŝƐƚŽƌŝĐǁĞůůĚĂƚĂŝŶĚŝĐĂƚĞdKŶŽƚĂƚƐƵƌĨĂĐĞ͘ ď͘ ĞƉƌĞƉĂƌĞĚƚŽĐĂƚĐŚĚŝĞƐĞůďĂƐĞĚĂŶŶƵůĂƌĨůƵŝĚƐĚŝƐƉůĂĐĞĚďǇƚŚĞǁŽƌŬƐƚƌŝŶŐ͘ ϰϮ͘ ZŝŐƵƉĐĞŵĞŶƚŝŶŐĞƋƵŝƉŵĞŶƚĂŶĚĐĞŵĞŶƚĨƌŽŵϭϬϬ͛DƚŽƐƵƌĨĂĐĞǁŝƚŚƉĞƌŵĂĨƌŽƐƚĐĞŵĞŶƚƚŚƌŽƵŐŚ ƚŚĞǁŽƌŬƐƚƌŝŶŐƐƉƵŵƉŝŶŐƵŶƚŝůĐůĞĂŶĐĞŵĞŶƚŝƐŽďƐĞƌǀĞĚĂƚƐƵƌĨĂĐĞ͘ ϰϯ͘ ZĐĞŵĞŶƚŝŶŐĞƋƵŝƉŵĞŶƚ͕ĂƚƚĞŵƉƚƚŽƉƵůůв͟ǁŽƌŬƐƚƌŝŶŐĨƌŽŵǁĞůů͘ Ă͘ /ĨǁŽƌŬƐƚƌŝŶŐǁŝůůŶŽƚƉƵůů͕ĐƵƚв͟ǁŽƌŬƐƚƌŝŶŐ͕ĐŽŶƚĂĐƚKZ͘ ϰϰ͘ ZŵŝǆŝŶŐ͕ƉƵŵƉŝŶŐĂŶĚƌĞůĂƚĞĚĞƋƵŝƉŵĞŶƚĂŶĚƉƌĞƉĂƌĞƚŚĞŵĨŽƌŵŽǀŝŶŐƚŽƚŚĞŶĞǆƚůŽĐĂƚŝŽŶ͘ ϰϱ͘ >ŽǁĞƌDĂƐƚ͕^ŬŝĚZŝŐKĨĨŽĨǁĞůůĂŶĚƉƌĞƉĂƌĞĨŽƌŵŽďŝůŝǌĂƚŝŽŶ͘ 3.1.9 Post Rig Operations: ϰϲ͘ hƐŝŶŐĞǆĐĂǀĂƚŽƌ͕ĞǆĐĂǀĂƚĞĂƌŽƵŶĚƚŚĞǁĞůůŚĞĂĚƚŽĂĚĞƉƚŚƵƉƚŽŽĨϲͲϴΖďĞůŽǁƚƵŶĚƌĂůĞǀĞů ϰϳ͘ ƵƚϮϬ͟ƐƵƌĨĂĐĞũĂĐŬĞƚĂŶĚϭϲ͟ĐŽŶĚƵĐƚŽƌ͘ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 13 ϰϴ͘ hƐŝŶŐĂĐƵƚƚŝŶŐƚŽƌĐŚŽƌĂĐĂƐŝŶŐƐĂǁ͕ĐƵƚĂůůĐĂƐŝŶŐĂŶĚƚƵďŝŶŐƐƚƌŝŶŐƐŽĨĨƚŽůĞĂǀĞǁĞůůƐĞǀĞƌĞĚхϱΖ ďĞůŽǁƚƵŶĚƌĂůĞǀĞů͘ ϰϵ͘ /ŶƐƉĞĐƚĂůůĂŶŶƵůŝ o dŽƉͲŽĨĨĐĞŵĞŶƚŝŶĂŶŶƵůŝĂƐŶĞĞĚĞĚ ϱϬ͘ tĞůĚĂϭͬϰΗƚŚŝĐŬ͕ϭϭͲϯͬϰ͟ĚŝĂŵĞƚĞƌƐƚĞĞůŵĂƌŬĞƌƉůĂƚĞŽǀĞƌƚŚĞƚŽƉŽĨƚŚĞĐƵƚͲŽĨĨǁĞůůĐĂƐŝŶŐ͘WůĂƚĞƚŽ ŝŶĐůƵĚĞƌĞƋƵŝƌĞĚŝĚĞŶƚŝĨŝĞƌŵĂƌŬŝŶŐƐ͘>DƌĞƉƌĞƐĞŶƚĂƚŝǀĞƚŽǁŝƚŶĞƐƐ͘ ϱϭ͘ ĂĐŬͲĨŝůůĞǆĐĂǀĂƚŝŽŶǁŝƚŚŽƌŝŐŝŶĂůƐŽŝů͘dŽƉĞǆĐĂǀĂƚŝŽŶǁŝƚŚĨŝǀĞǇĂƌĚƐŽĨĐůĞĂŶŐƌĂǀĞů͕ŵŽƵŶĚŝŶŐŝƚŽǀĞƌ ƚŚĞǁĞůůƚŽĐŽŵƉĞŶƐĂƚĞĨŽƌƐĞƚƚůŝŶŐĂƐƐŽŝůƚŚĂǁƐ͘ ϱϮ͘ ůĞĂŶůŽĐĂƚŝŽŶ͕ŽďƚĂŝŶƐŝƚĞĐůĞĂƌĂŶĐĞĂƉƉƌŽǀĂůĨƌŽŵ>DƌĞƉƌĞƐĞŶƚĂƚŝǀĞŽŶůŽĐĂƚŝŽŶĂŶĚƉƌĞƉĂƌĞĂůů ƉĞƌƐŽŶŶĞů͕ĞƋƵŝƉŵĞŶƚĂŶĚŵĂƚĞƌŝĂůƐĨŽƌĚĞŵŽďŝůŝǌĂƚŝŽŶ͘ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 14 &ŝŐƵƌĞϰ͗&ŝƐŚƌĞĞŬηϭƵƌƌĞŶƚŽŵƉůĞƚŝŽŶ^ĐŚĞŵĂƚŝĐ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 15 &ŝŐƵƌĞϱ͗&ŝƐŚƌĞĞŬηϭWƌŽƉŽƐĞĚWůƵŐŐŝŶŐ^ĐŚĞŵĂƚŝĐ Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 16 Figure 6: Fish Creek #1 Annuli Diagram Plug & Abandonment Plan BLM - NPRA Legacy Well Remediation Task Order-140L0624F0082 Fish Creek & Cape Halkett Olgoonik Oilfield Services | P&A Procedures 17 Figure 7: Fish Creek #1 BOP RU Diagram CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Schoessler, Allie M To:McLellan, Bryan J (OGC) Cc:Guhl, Meredith D (OGC) Subject:Re: [EXTERNAL] Fish Creek Test Well #1 (PTD 100-100) P&A report Date:Monday, February 3, 2025 10:36:57 AM Attachments:Fish Creek #1 Subsequent Report_April_2021.pdf Fish Creek Test Well 1 Approved NOI_February_10_2021.pdf Bryan, Attached is the final status report from April of 2021 and the approved plan prior to start of the P&A attempt. Let me know if you have further questions. Allie From: McLellan, Bryan J (OGC) <bryan.mclellan@alaska.gov> Sent: Wednesday, January 29, 2025 12:18:32 PM To: Schoessler, Allie M <aschoessler@blm.gov> Cc: Guhl, Meredith D (OGC) <meredith.guhl@alaska.gov> Subject: [EXTERNAL] Fish Creek Test Well #1 (PTD 100-100) P&A report This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding. Allie, I was just going through some old files and noticed we don’t have anything in our files for the P&A of this well that I believe was done in 2021. Could you send us a copy of the P&A plan and the report of operations? Thank you Bryan McLellan Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission Bryan.mclellan@alaska.gov +1 (907) 250-9193 From: Zach Sayers Date: April 23rd, 2021 RE: Fish Creek Test Well #1 Executive Summary Well Background Fish Creek Well #1 was drilled by the U.S. Navy in 1949. This well was drilled to a TD of 7,020' MD, then plugged back and side-tracked to 3,018’ MD with a 7" casing string having been set at 3,017' MD. A productive sand was found at 3,000 feet and produced by pumping on the well at ~12BOPD. Operations Summary: The existing well was entered on 3/01/2021 with a plumb bob tools and tagged at 60’ Below Ground Level (BGL). No pressure or flow was observed on the wellbore. Four days were spent nippling down the existing wellhead, fabricating a new wellhead, breaking down the cellar to allow for rig up, and rigging up the rig and BOPs over the well. On 3/05/2021 the well was entered with a tubing workstring and thawed down to 240’. On 3/06/2021 the well was thawed to 383’ BGL and the well took ~9 bbls of brine until loss circulation seized. At 383’ an obstruction was noted that did not allow for the 1.90” workstring to pass. After continuing to thaw the wellbore for an additional 24 hours, the 11-3/4” annulus valve was opened to atmospheric pressure and the fluid level in the 7” casing dropped indicating a u- tubing effect proving that the two annuli were in communication. On 3/09/2021 E-line tools were rigged up and a 4-1/2” Lead Impressions Block (LIB) was ran in hole and tagged at 230’. A 5” LIB was ran next with the same tag depth of 230’ BGL. A 1-11/16” weight bar was ran next and was able to get to the lower obstruction of 383’. A final run with a 5.75” OD gauge ring was completed and tagged at 230’ BGL. It is noted that all well work operations experienced heavy contamination of the circulated clear brine with heavy oil and tar while circulating and tripping in and out of the well. It was determined that a downhole camera was not practical due to the inability to clean the well to a clear fluid at the collapse point. Based on the data collected it is concluded that the 7” casing has several collapse zones due to lack of proper freeze protection and presence of water in the 7” x 11-3/4” annulus. The top most partial collapse is noted at 230’ BGL. The 230’ collapse is smaller than 4.50” but larger than 2.20” (1.900” tubing coupler OD). Additional partial collapse zones are possible from 230’ to 383” of similar magnitude as the 230’ collapse but cannot be verified without a caliper tool. A nearly full collapse (less than 1.6875”) has occurred at 383’ BGL. The decision was made that the planned scope of work to abandon the lower zones could not be completed with the tools on location and within the time constraints of the snow trail season of 2021. The well was circulated from 383’ to surface on both the IA and the OA with clean diesel. On 3/12/2021 a dry hole tree was fabricated to the top of the wellhead for future monitoring and inspection. The rig and well equipment was rigged down and mobilized back to Prudhoe Bay. Sincerely, Zach Sayers, P.E. Petroleum Engineer Clear Creek Energy, LLC. Well Photo Report Well Name & Number:Fish Creek Test Well #1 API Well Number:50-103-10001-00-00 Field:National Petroleum Reserve, Alaska Surface prior to plugging activities TA Wellhead Configuration 03/01/2021 3/13/2021 TA Wellhead Configuration Surface photo after rig work activities 3/13/2021 3/13/2021 5'BelowGroundLevel NationalPetroleumReserveAlaska Alaska FishCreekTestWell#1 PBTD:3017' RKB–GL:15.0' API#50Ͳ103Ͳ10001 TD:7,020'MD ElevationKB:31.5' PostRigSchematic DrawnBy: Date 4/23/2021PTD#100Ͳ100 LocationofWell Latitude/Longitude:70.310775198,Ͳ151.873515704(WGS84)* *Planning,onlyactuallocationtobeverifiedwithsitevisit ZJS ProductionCasing 7",23#,JͲ55,8rdCSGto2,915'MD/TVD (6.366"ID,6.241"Drift,4,360Burst,3,270Collapse,366kyield) Cementedwith245sxofcmttreatedwith2%CaCl CalculatedTOC:2,209MD* *assuming1.18cu.Ft/sk&5.2gal/sk NationalRig50 122'IdecoDerrick Spud:May17th,1949 Completed:September4th,1949 15'MD/TVD(OriginalGroundLevel) ConductorCasingJacket 20",48#CSGto46'MD/TVD (19.56"ID*) “NaylorSpiralͲWeldCasing” 15sx‘OilWellCement+15sxsand ConductorCasing 16",42#,SlipͲJt,weldedCSGto+/Ͳ193'MD/TVD (15.52"ID*,1,052psiBurst*,120psiCollapse*) *pressurescalculatedwithgivensteelparameters,notAPIcertifiedvalues Cementedwith90sxofHiͲEarly CalculatedTOC:88'MD* *assuming1.22cu.Ft/sk&5.2gal/sk,and100%OHexcessfactorforpermafrost SurfaceCasing 11Ͳ3/4",47#,JͲ55,8rdCSGto1,046'MD/TVD (11.00"ID,10.840"Drift,3,070Burst,1,510Collapse) Cementedwith125sxofHiͲEarlycmttreatedwith2%CaCl CalculatedTOC:818'MD* *assuming1.22cu.Ft/sk&5.2gal/sk 18Ͳ¾”OHf/46'MDto193'MD/TVD 22"OHto46'MD/TVD 15Ͳ½”OHf/193'MDto1,046'MD/TVD 10Ͳ5/8"OHf/1,046'MDt/3,018'MD/TVD 7Ͳ5/8"OHf/2,552'MDt/7,020'MD/TVD ProductionLiner 4Ͳ1/2",11#,JͲ55,8rdCSGfrom3,017'to2,915'MD/TVD (4.052"ID,3.927"Drift) perforatedfrom2,918to3,017ftwith8rowsof½”drilledholeson2Ͳ7/8"centers,staggered,and coveredwith4Ͳ½”by6"ODNelsongravelprepacksleeves 6"ODBrownPackͲOffHanger@2,891'MD/TVD CasingCollapse(Drift:>2.20",<4.50")–261.5'MD CasingCollapse(Drift:>1.6875")–414.5'MD DieselFreezeProtectplaced 3/10/2021f/414.5'MDt/Surface NationalRig50 122'IdecoDerrick Spud:May17th,1949 Completed:September4th,1949 0.0in. 18.0in. 30.0in. 60.0in. ExistingGroundLevel(TundraLevel) DRAWNBY ZACHSAYERS REVISED 4/23/2021 SCALE 1:24 TITLE FishCreek#1AsBuiltWellhead REV. DESCRIPTION DATE BY Company: Under ContractTo: AORIGINALDRAWING 4/23/21 ZJS API#: 50Ͳ103Ͳ10001 PTD#: 100Ͳ100 NPRA,Alaska LocationofWell Latitude/Longitude:70.310775198,Ͳ151.873515704(WGS84)* *Planning,onlyactuallocationtobeverifiedwithsitevisit 2",1,000psi,ThreadedBallValvew/2"fNPTthreads psi 11Ͳ¾”x7"WeldͲOnAnnulusIsolatorPlate 11Ͳ¾”47#, JͲ55,8Rd, casing (1,046') 7"23#JͲ55Casing8Rdcasing(2,915') 3Ͳ1/8"Neck 3Ͳ1/8",3,000psi,FlangedBallValvew/3Ͳ1/8"3MFlanges 7Ͳ1/16"3MFlange 3Ͳ1/8"3MFlange 3Ͳ1/8"3MFlange 2"NPTReducingSagew/2"mNPT 2"NPTCoupler 2"mNPTx½”fNPTreducerbushing 2",1,000psi,ThreadedBallValvew/2"fNPTthreads DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:12 Well Type: API #:50-103-10001 Report Date:12-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-35 -15 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:12 Last BOP Test: Last Safety Mtg:3/12/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 9.6 40.00 7 9.00 49.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 16:00 9:30 16:00 18:00 2:00 12:00 18:00 6:00 18:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Overcast South west 10 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Class 11: brine Nipple down BOPS, Install well cap, Build cellar cover CLASS II: Crude oil Cumulative Volume (bbls): Operations Report Clean up equipment, Remove cement and pilings from well site No Accidents, No Incidents, No Spills. Rigging Down Operational Details (6:00 - 6:00) Hold PJSM. Rigging down equipment Remove pilings and cement from well site area, Clean equipment and load out Weld 3'' flange to 7 1/16'' flange , Weld top flange to gauge fitting, Assemble 3'' valve assembly Pump brine from return tank, Clean oil from tank, clean up pumps, Rig down divert line, Choke and divert tank, Clean up 1.9 tubing place in rack, Secure well Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:11 Well Type: API #:50-103-10001 Report Date:11-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-18 -15 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:2-Mar-21 Fluid in Well:OH ID, in: Operation Days:11 Last BOP Test: Last Safety Mtg:3/10/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 9.6 40.00 7 9.00 49.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 10:00 3:30 8:00 12:00 2:00 12:00 14:00 2:00 14:00 18:00 4:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Overcast South west 10 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Class 11: brine Nipple down BOPS, Install well cap, Build cellar cover CLASS II: Crude oil Cumulative Volume (bbls): Operations Report Clean up equipment, Rig down rig, Build cellar wall No Accidents, No Incidents, No Spills. Rigging Down Operational Details (6:00 - 6:00) Hold PJSM. Rigging down equipment Continue clean return tank, Clean up flow pan, slip bowl slips elevators Remove tarp, Rig down scaffolding Lay derrick over, Back rig off rig mats, Pull rig mat over return box, Remove return tank Cut 12'' by 12'' beams fit in place bracing the cement walls on either side and completing the cellar enclosure. Secure well Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:10 Well Type: API #:50-103-10001 Report Date:10-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-2 3 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:2-Mar-21 Fluid in Well:OH ID, in: Operation Days:10 Last BOP Test: Last Safety Mtg:3/9/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 9.6 40.00 7 9.00 49.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 8:00 1:30 8:00 12:00 4:00 12:00 18:00 6:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South west 10-25 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Class 11: brine Rig down rig CLASS II: Crude oil Cumulative Volume (bbls): Operations Report Freeze protect , Rig down wireline No Accidents, No Incidents, No Spills. Rigging Down Operational Details (6:00 - 6:00) Hold PJSM. Pumping diesel, Rigging down equipment Rig down wireline Rig up to cement pump, Displace well to Diesel at 2bpm 50 psi, Pump 42bbls down 7'' Annulus, Take returns 11 3/4'' by 7'' annulus, 35 bbls back in return tank, 7 bbls bullheaded away Pump brine from return tank, Clean oil from tank, clean up pumps, Rig down divert line, Choke and divert tank, Clean up 1.9 tubing place in rack, Secure well Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:9 Well Type: API #:50-103-10001 Report Date:9-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):10 21 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:2-Mar-21 Fluid in Well:OH ID, in: Operation Days:9 Last BOP Test: Last Safety Mtg:3/9/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 7 9.00 9.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 8:00 1:30 8:00 8:30 0:30 8:30 9:00 0:30 9:00 12:00 3:00 12:00 18:00 6:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South 10 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Freeze protect well CLASS II: Crude oil Cumulative Volume (bbls): Operations Report Run wireline to see statics of well No Accidents, No Incidents, No Spills. Well control, Wireline operations Operational Details (6:00 - 6:00) Hold PJSM. Working with wireline Make up 4 1/2'' impression block, Run in hole, Tag at 230', Pull out of hole, Dent on side. Make up 5'' impression block, Run in hole, Tag up at 230', Pull out hole, Same dent on side Run in hole with 1 11/16'' weight bar, Work up and down on obstruction at 383', Unable to work through, Pull out of hole Run in hole with 5.75 gauge ring, Tag up at 230', Pull out of hole Pump oil from return tank Clean up equipment and well site, Secure well Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:8 Well Type: API #:50-103-10001 Report Date:8-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-24 -13 TD:GL, ft:15 Planned Days: PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:8 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3-3-2-21 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 8:00 1:30 8:00 14:00 3:00 14:00 17:00 3:00 17:00 18:00 1:00 9:00 Remarks: Total Hours: No Accidents, No Incidents, No Spills. Well control, Handling tubing Operational Details (6:00 - 6:00) Hold PJSM. Laying down tubing, Working with oily tubing Heat up well Open 11 3/4'' 2'' valve, fill 7''by 11 3/4'annulus' with 2 bbls, Circulate well and heat up 100 degree in, 80 degree return from 7'' by 11 3/4'' annulus Pull tubing out of hole slow cleaning thick oil off tubing Clean up equipment from pulling oily pipe, Secure well Run impression block on Wireline CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Heat up well 100 degree in, 80 degree returns 9.6 # brine, Open 11 3/4'', Take returns out 11 3/4'', Pull out hole tubing CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Clear Skies South 10 Well Status 3,018 3,018 Integrity Issues Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:7 Well Type: API #:50-103-10001 Report Date:7-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-24 -13 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:7 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 9:00 2:30 9:00 12:00 3:00 12:00 12:30 0:30 12:30 18:00 5:30 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South 10 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Heat up well, Attempt to circulate up 11 3/4'' Annulus CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Heat up well 100 degree in, 80 degree returns 9.6 # brine, Open 11 3/4'', Communication between 7'' and 11 3/4'' No Accidents, No Incidents, No Spills. Well control, Mixing chemicals, Trapped pressure Operational Details (6:00 - 6:00) Hold PJSM. Running Tubing, Well control, Mixing chemicals, Trapped pressure Rig up Cement pump to circulate at high rate Circulate at 1 bpm 200psi, Work pipe on obstruction at 383' Open valve on 11 3/4'' fluid level dropped down in 7'' Annulus, Air blowing out of 11 3/4'', communication between 7'' and 11 3/4'' Annulus Continue circulate heat up well bore 100 degree in 80 degree returns, Shut down, secure well Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:6 Well Type: API #:50-103-10001 Report Date:6-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-18 -9 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:6 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 12:00 5:30 12:00 17:00 5:00 17:00 17:30 0:30 17:30 22:00 4:30 16:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South 10 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Work through obstruction at 383', Continue to RIH CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Continue RIH circulating out oil, Tag up at 383' No Accidents, No Incidents, No Spills. Well control, Mixing chemicals Operational Details (6:00 - 6:00) Hold PJSM. Running Tubing, Well control, Mixing chemicals Continue RIH circulating out thick crude oil to 383' Heat up 9.6 brine to 100 degree in , 70 degree brine returns, Work pipe on tight spot Lost returns, Pump 5 bbls brine, No returns Build 15 bbls 9.6 brine and pump, Fill well 3.5 bbls brine. Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:5 Well Type: API #:50-103-10001 Report Date:5-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-28 -24 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:5 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 9:00 2:30 9:00 12:00 3:00 12:00 13:30 1:30 13:30 17:00 3:30 17:00 18:00 1:00 12:00 Remarks: Total Hours: No Accidents, No Incidents, No Spills. Well control, Running work string Operational Details (6:00 - 6:00) Hold PJSM. Running Tubing, Well control, Overhead loads Tarp in rig Build 14 bbls 9.6 brine RIH to 55', Fill hole with 5.3 bbls 9.6 Brine Continue RIH to 240' Breaking circulation Build brine, Close pipe rams secure well Continue RIH circulating out oil CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Tarp in rig, Build brine, RIH breaking circulation CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Clear Skies South 10 Well Status 3,018 3,018 Integrity Issues Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:4 Well Type: API #:50-103-10001 Report Date:4-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-28 -24 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:4 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 9:00 2:30 9:00 10:00 1:00 10:00 12:00 2:00 12:00 13:00 1:00 13:00 14:30 1:30 14:30 15:30 1:00 15:30 17:00 1:30 17:00 18:00 1:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South 5 to 25 Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Build brine, Tarp in rig, Rig up to run work string, Run in hole work string CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Excavate for return tank, Set tank, Rig up diverter and test, Function test BOPs, Raise derrick, Move in cement unit No Accidents, No Incidents, No Spills. Setting up scaffolding, Raising Derrick Operational Details (6:00 - 6:00) Hold PJSM. Working around scaffolding, Proper tie off, Use buddy system. Excavate for return tank, Set tank, Heat up BOPs, Set air compressor, Heat up Set choke, Run diverter line to divert tank Function test BOPs, Blind rams, Pipe rams, HCR Test diverter line with air Raise derrick Set up scaffolding around rig Move cement unit place and heat up. Heat up return tank Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:3 Well Type: API #:50-103-10001 Report Date:3-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-28 -24 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:3 Last BOP Test: Last Safety Mtg:3/3/2021 Last Evac Drill:3/3/2021 Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 8:00 1:30 8:00 10:00 2:00 10:00 12:00 2:00 12:00 14:00 2:00 14:00 16:00 2:00 16:00 18:00 2:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies South 2-7 MPH Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Raise derrick, Build enclosure around rig, Set return tank, Function test BOPs, Build Brine, Run Diverter line to divert tank. CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Cut off conductor, Weld on starting head flange, Nipple up Bops, Hook up Accumulator lines, Set rig mats, Move rig in place No Accidents, No Incidents, No Spills. Hot work permit, Working in cellar area, Overhead loads Operational Details (6:00 - 6:00) Hold PJSM. Use proper rigging on loads, Inspect straps before use, one person giving hand signals Cut 20'' and 16'' at cellar floor Cut 11 3/4'' casing at 6' , Weld isolation plate on 11 3/4'' by 7'' casing, Weld 2'' nipple on 11 3/4'', Install valve Cut 7'' casing at 5', Weld starting head on 7'' casing, Weld 2'' nipple on 7'' casing, Install valve Nipple up 7 1/16'' BOPs, Flow pan, Run accumulator lines Level pad area, Set rig mats Move rig in set over well, Cover rig, Heat up to raise derrick Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:2 Well Type: API #:50-103-10001 Report Date:2-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-32 -22 TD:GL, ft:15 Planned Days:20 PBTD:RKB, ft:31.5 Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:2 Last BOP Test: Last Safety Mtg:3/2/2021 Last Evac Drill: Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 12:00 5:30 12:00 18:00 6:00 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies North and South 2-7 MPH Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Cut off conductor, Weld on starting head flange, Nipple up BOPs, Set return tank, Set rig mats CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Cut off wellhead, Excavate cellar area down 7', Assemble BOPs No Accidents, No Incidents, No Spills. Hot work permit, Working in cellar area Operational Details (6:00 - 6:00) Hold PJSM. Over head loads, hand placement, Trapped pressure Remove Tubbing Head and casing head, Cut off starting head Excavate cellar area down to 7' around 20'' conductor, Assemble BOPs, Fill and test boiler, Heat up and Test Accumulator, Casing between 7'' and 11 3/4'' open air space Total Hours: DOR Fish Creek Test Well 1 Well Name: Operator:BLM Report #:1 Well Type: API #:50-103-10001 Report Date:1-Mar-21 Field: PTD #:100-100 Contract #:140L0618F0246 Supervisor:Shane McGeehan Phone #:801- 556-0946 Gen. Conditions: Petr. Eng.:Zach Sayers Phone #:281-615-1408 Wind Direction: BLM PM:Allie Schoessler Wind Gusts (mph): BLM PI:Quinn Sawyer Temp. (Low, High):-42 -25 TD:GL, ft: Planned Days:20 PBTD:RKB, ft: Start Date:1-Mar-21 Fluid in Well:OH ID, in: Operation Days:1 Last BOP Test: Last Safety Mtg:3/1/2021 Last Evac Drill: Csg String OD (in) Depth (ft)Weight (#/ft) Conductor: 16'' 1036 47 Surface: 11.75'' 1036 42 Production: 7'' 2915 23 Pump # Model Rate (BPM) Pressure (psi) Weight (ppg) Volume (bbls.) 0 Weight (ppg) Daily Volume (bbls.) 0.00 24 Hour Summary: 24 Hour Forecast: HSE Summary: From To Hours 6:00 6:30 0:30 6:30 18:00 11:30 12:00 Remarks: Daily Operations Report Fish Creek Test Well #1 Gas Well Exploration NPRA Contacts Weather Clear Skies North and South 2-7 MPH Well Status 3,018 3,018 Integrity Issues CLASS I: Cement Rinsate Pump Parameters Type Mud / Brine Properties Fluid Type Cumulative Volume (bbls): Waste Fluids Fluid Type Continue remove debris from around well cellar area, Dig cellar down to cut off well head CLASS II: Cement Returns Cumulative Volume (bbls): Operations Report Unload Equipment heat up and start up, spot work Conex's heat up and power up. Remove Cement, Crane mats, posts from around well cellar area No Accidents, No Incidents, No Spills. Good communication, Unloading trailers, Pinch points, Stay clear of moving equipment, Operational Details (6:00 - 6:00) Hold PJSM. Hand placement, Shifting loads on trailers, spotters stay in line of sight Unload equipment, heat up, start up, Spot work Conex's Heat up and power up ,Remove cement, Crane mats, Posts from Around well cellar area, Heat up wellhead open master valve, No pressure , Open Annuals valve no pressure. Plumb bob well to 60' tag up. Secure well Total Hours: E r r r r r C r r r c i r r r C 0 n ^ > O ❑ ❑ El o � _ vac d33'�F a ur Z -+ = a o Z E c o m ry u v=i S� n ^ a Ell] ❑❑❑ c 3 = n > as cFT c o n Z n \ n e ? = n ❑©❑ ❑❑ w 3 n o c y ? A Z S O n c v v > N 'no � v n ' o .. � r. > m _ r� n 3 v > El El ❑ El Elm > n E N 2 O n o O Z v v � 3 =-R ❑ ❑❑ N = SJ ^ n n � S a 5 w N — m ❑ m Zcm r0� D m m p O UGC z m to a ,'a z u ? 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N'Q w$uro Zip n33 p 9 �'`• y� 9 �'' .. b n^ p @ n z m S ,n • gel_' Q d a $ on AN G a 00 a S a m : �12 N n- �'w im y 3 3 ww d c a o �r� � p� 0 3 n �m n m 10 1 s x .2.� 3 1� I q49. nc; ^ 3n!" uoa .cow 3 �n�:S i� ♦ py lfl sw y d H c n 0 N m 7e g G2a $~ 10 IS I 3 9Up § N �w; i 3 ra .0\ m I m I m _ m y my u N IOj H N p I v gyi 'T' x� 3 = n mp gym" Ls 3 -3 � Izl n„'9 ieC w p O Qk O n F s d 8 i6� ICI 3 6i I I pwi V~i N R K � p INI� I I p p 9 sCN q x" ^' � p I I •g a d LA M an 7 0 0 m a 7 In \ -■ � � | m iL || 2 I & s § ; °� `` � \ � 2 ■ `- !P . � §� } �§ §�\k7( it ! 6 ` ■/\ ƒ \`§a/ § § z � f0 ;e2 rr el BLM Legacy Well Review — August 6, 2014 Notes on wells for file: Fish Creek #1 - p7b /60'/04' Need to update schematic to actual casing depths. Verify fluids and fluid depth with Slickline at some point. Determine cement coverage in 7" casing. Well is near Mooses Tooth Development so could wait on more infrastructure to facilitate the P & A . Topagurak #1 ?r-0 l00— If 5 - Schematic `5 - Schematic needs to be corrected to reflect casing points , fluids etc. Has diesel lines buried for refrigeration... still holding fuel. May not be able to easily enter wellbore for drifting (no wellhead). No wellbore plugs are present. Large area of debris with a phantom cellar nearby. Thermistor cables seem to indicate there is most likely diesel in wellbore. East Toagurak #1 /D0— /T & Schematic needs correcting. Not sure what fluid was left in wellbore... BLM report states frozen mud but couldn't find any verification in my research (last entry in drilling record said it was bailed to 1029' ft). Has 10 %" stub sticking up for a "wellhead". Needs SL drift to verify fluid level and type. Skull Cliff Core #1 app— / J Z -- Schematic Schematic needs minor corrections and updates (show fish in wellbore at 527'md). This site has a great number of surface debris issues such as barrels and batteries. Fluid in wellbore is diesel but is in contact with the OH section of the well as casing is only set at 30'md. 7" casing stub with cap is "wellhead". No DST's were performed and no hydrocarbon shows ... Needs a slickline drift to verify that diesel is still in place. SCOIAED OCT 0 12014. Legacy Wells Summary Report r, 06]V �ooa' 557.E 50Cd' G rt'C Figure 8: Fish Creek #1 wellbore diagram. 211 Ner.n !,yiir -•w. ,l 4VU U.iTL- wnt'.1ed ,if ab' .+'15 at 0 11 V-11 and 13 ;r. )' ,wrl IE' Wralarn -Ire a10 g IW, %27 5, h we Ced f 1$` sir-.:iN LSE w35 :et ie,ilac ',_ 1E?: Y1$?:1 rY rt HI-Ean+ Ser` i Ir' I. J-, j 571; A U Sv :I, 3 i0_ -j !f read cs -in :n.:. -,Cl !! 107b'.r'tiE Ex J M Early rnnn'aru m r.gnp-I Fish Creek #1 0D ?ff ?0 /�4111 Hoe plus• ri ass zrid z cal Iroc'<cC hair •.41p 6^1144 rYT 16N2' le 1313'to Im1 o &.tna,. N..'%odtir 29)0' 7' 231b )•ES YNOGWr.".w„ 8 �-jnd three: RPI aseT:ess casirg-w.:r, sp1 f I .'913 ve I73 s.< of;br t:and cn.-Wa k.0nn t•.d 15rq rnlcSfa•.liuii'.irig .rxtdhrdeLift} -- L:rnti,"al'nh31 .c: -ti ale 41LLQGJJ ra 4 BLM Open File Report 127 • May 2013 -b 7 �' Tom- 107 Legocy Wells Summary Report J' Figure 6: Fish Creek #1 wellhead with water filled concrete cellar (July 2012). Fish Creek #1 Figure 7: View inside the Fish Creek #1 concrete well cellar. Note the light sheen for the dry tar coming into contact with the cellar water. (July 2002). BLM Open File Report 127 • May 2013 105 T /S 518 EXPLORATION OF NAVAL PETROLEUM RESERVE NO. 4. ALASKA. 1944-53 were in use. A jamesway but for recreation and a galley storage wanigan connected to the galley were added later. The galley quonset had complete plumbing facilities, including hot water from a Heat -Pak boiler and a pressure system which also supplied steam for heating the galley and utility buildings. Drainage from the buildings was piped away from the area through heated insulated lines. The camp buildings were set on short pilings, and walkways of scrap lumber connected them to a camp street and thence to the rig. Using the walkways and reducing the use of vehicles in the camp area as far as possible kept the site from becoming a morass when the ice and snow melted and the tundra thawed. Rig construction began on April 1. A 50 -horsepower Kewanee boiler with a thaw -point manifold capable of operating 6 steam points had been mounted in a wanigan at Barrow. With this to thaw the ground, the pile-driver crew drove about 1,110 pilings, 5-20 feet long, in 6 days. Rig foundations were completed by May 1, and rigging up (including installation of a power wanigan, a geologic and engineering office wanigan, and a garage of canvas -covered frame con- struction) was completed on May 18. Persarunel.—A drilling foreman, a petroleum engi- neer, and a geologist supervised drilling. In addition to the rig crews (2 drillers, 2 derrickmen, 6 floormen, 2 heavy -duty -equipment mechanics, and 2 firemen), an electrician, a carpenter, 2 tractor operators, a janitor - oiler, a warehouseman, a timekeeper, 2 cooks and 2 cooks' helpers worked at the well site. A cementer and a Schlumberger operator visited the well when their services were needed. Vehicles and heavy equipment.—Seven vehicles were kept at the well site: a D8 Caterpillar tractor with bull- dozer blade, 2 weasels, a D6 Caterpillar tractor with bulldozer blade, a T-9 crane (cherry picker), a North- west crane, and an LVT. The D8 Caterpillar tractor was used to haul water, and the LVT was used for trips to the coast. Important items of drilling equip- ment used at the well were listed by Arctic Contractors as follows: 1---------- National 50 drilling rig powered by 2 D13000 Caterpillar engines. 1---------- Gardner Denver 7%- by 10 -in. pump powered by a D13000 Caterpillar engine. 1---------- National C-250 slush pump powered by a GMC quad diesel engine. 1---------- Emsco 200 -ton crown block. 1---------- Byron -Jackson 1264on hook. 1---------- Ideal type D swivel. 1---------- Ideal 17% -in. rotary table. 1---------- Baash-Ross square kelly. 1---------- Shaffer double -gate blowout preventer. 1---------- Kewanee 25 hp boiler. 1---------- Link -Belt 48- by 60 -in. shale shaker. 2---------- 140 -bbl steel suction tanks. 3---------- 2500 -gal water tanks. Fuel, lubricant, and water consumption.—Fuel was supplied to the camp and rig by gravity flow from a centrally located fuel tank. water was brought to the site in a 2,500 -gallon water wanigan hauled by a D8 tractor. The first water source was a lake about a mile from the rig, but after thawing started, a small creek about 500 yards west of the camp furnished an adequate supply. Consumption of water and petroleum products was as follows: 955,000 gallons of water, 52,541 of diesel fuel, 2,815 of gasoline, 1,573 of lubricating oil, 663 pounds of grease, and 230 pounds of thread lubri- cant, which was used during the last half of the operation. DRILLING OPERATIONS The drilling rig was set on a foundation of pilings; the cellar was of concrete, reinforced with steel matting. The derrick was enclosed, and the righouse was con- structed with canvas panels prefabricated in Barrow camp. The righouse roof was of 2- by 12 -inch T -beams covered with tarpaulins. DRIIA "G: NOaMS The following drilling operations were recorded by C. S. Roberts, Arctic Contractors petroleum engineer. Notes from drilling records Depa (feet) Remarks 46---------- Fifteen sacks of Oil Well cement mixed with 15 sacks of sand were used to cement 20 -in. Naylor spiral -weld 48 -lb casing at 46 feet. 194 --------- Weather turned cold, and mud lines froze. Operations suspended for 5 days to complete righouse roof and thaw pipes. While reaming hole, circulation broke around 20 -in. casing, which slipped down hole. Conductor pipe was recovered and recemented, and circulation regained. Sixteen -inch outer diameter Western Pipe and Steel 42-1b Xe -in. welded -plate sUp- joint casing was cemented at 193 feet with 90 sacks of Hi -Early cement. 1,046 -------- After reaming hole, 11% -in. J-55 47-1b A. O. Smith 8 round thread casing was set at 1,046 ft and cemented with 125 sacks of Hi -Early construction cement mixed with water heated to 90°F and treated with 2 percent calcium chloride. 3,060 -------- Following first formation test, rubber packers were lost in hole. When packers were drilled up, rubber caught in flow pipe and was re- moved through window cut in flow line. 5,585 -------- After unsuccessful second formation test, hole was cleaned out and prepared for third test. CORE TEST, SENTINEL HILL AREA, AND TEST WELL, FISH CREEK AREA, ALASKA 519 Notes from drilling records—Continued Del" (fed) Remarks 7,020-------- When total depth was reached, hole was plugged back, and a sidetracked hole was drilled from 2,552 to 3,018 ft to test sandstone beds near 2,900 ft. Seven-inch casing (23-1b J-55 Youngstown 8 round thread API seamless) was set at 2,915 ft and cemented with 173 sacks of Portland construction cement, 12 sacks of Hi -early, and 60 sacks of Oil Well cement, mixed with 2 percent calcium chloride and enough water, heated to 60°F, to make 114 -lb slurry. When cement was set, hole was drilled and underreamed to 3,018 ft, and gravel -packed liner was installed. Liner con- sisted of 126 ft of 4% -in. 11-1b 1,200-1b test AN seamless line pipe with a Brown liner shoe on bottom. Liner was hung at 2,891 ft, with a 6 -in. outer -diameter Brown pack -off hanger, and perforated from 2,918 to 3,017 ft with 8 rows of 'Y in. drilled holes on 2% -in, centers, staggered, and covered with 4,4- by 6 -in. outer - diameter Nelson gravel prepack sleeves. Ran 2% -in. tubing (6.5-1b external upset H-40 range 2 seamless) with pump shoe and swab stop on bottom to 3,015 ft. After changing mud to water, tubing was pulled back to 2,860 ft and swabbed. Hourly swabbing caused a gradual fluid rise to about 2,400 ft. After swabbing for 2 days, pumping equipment was brought from the LCM on the beach and a pump and 285 10 -ft rods were installed. Well was pumped from 10th to 20th of Sep- tember; production decreased from 27 to 10% bbl of oil per day, averaging about 12 bbl. Water accompanied oil on first day; no water produced thereafter, and pump was removed. Fluid level, estimated at 2,800 ft during pump- ing, rose to 2,400 ft in about 26 hr, and a hundred feet higher after 8 hr more. Bailer run to bottom of liner was two-thirds full of muddy water after first trip, and full of oil, with no water, sand, or silt, after second. Tub- ing and pump reinstalled on September 22, at 11:40 a. m. Fluid reached surface at 1:05 p. m. and was mostly clear water with stain of oil until 5:10 p. m., when it became clean oil. Small amount of gas came through 7 -in. cas- ing. On 23d and 24th of September 18 bbl of oil with 15 of water, and 12 bbl of oil with no water was pumped, respectively; well averaged 9-12 bbl daily through October 15. Tubing and pump again removed, and well bailed in- termittently until October 25. Final well -head installations, from bottom up, are a Shaffer 11yi-in. plate landing base, a Shaffer ilY4-in. full -opening landing spool with 2 -in. line -pipe side connections; Shaffer tubing head; swage; 3 -in. Hughes 3,000-1b threaded flow -line valve. DRILL AND CORE BITS Most of the cores were taken by wire line, using the A-1 75/8 -inch core barrel and ten 75/8 -inch Universal rock bits. A few cores below 6,300 feet were taken with 3 Hughes conventional bits, because the wire line equipment could not be used inside the 3 -inch drill pipe employed below that depth. The conventional bits had very poor recovery, however; so the lowest cores were taken with the wire line core barrel installed before running the drill pipe in the hole. Thirty-eight bits in 8 sizes were used to drill the test, including the sidetracked hole. Most were Security or Reed rock bits, but two Globe bits were used in reaming the upper part of the hole. Used bits showed little wear on the teeth, but the bearings were badly worn. Core and drill bits used are listed on the graphic log (pl. 32). DRILLING MUD The rock drilled included some bentonite and a large amount of shale, which made very good mud. Silty beds furnished large amounts of abrasive silt which increased mud weight, but adding water reduced the weight and lowered the viscosity, and the silt settled out in the tanks. The C-250 mud pump furnished enough velocity to flush the hole and maintain it in good condition with low -viscosity mud. After the hole was plugged back, the mud was di- luted with water to counteract cement contamination. This also resulted in the light -weight mud desired for subsequent operations. Driscose and Aquagel were added after setting 7 -inch casing to provide low -weight, low -viscosity, low -water -loss mud for drilling through the producing sands. The total additives used in the well were 220 sacks of Aquagel, 50 sacks of Baroid, 6 sacks of pyrophosphate, 2 sacks of quebracho, and five 50 -pound sacks of Driscose. The following table is a week -by -week summary of the mud characteristics and the additives used. Summary, by weeks, of drilling -mud characteristics and additives in Fish Creek test well i Depth (feet) Weight (lbper on ft) Vis- cost tp (secs) Water loss (cc per 3 Tem - tura p(oeF) Additives 0- 184 -------- -------- ------- -------- 18 sacks Aquagel. 194- 355 76 78 -------- -------- -------- 12 sacks AquagetJ 356-1,258 1,288-2,950 -------- 74-76 -------- 38-44 -------- 3-8 -------- -------- No record. 75 lb pyrophosphate. %950-,8,786 3, 786, 554 76-82 76 36-40 34 3-4 7 -------- 77-82 75 lb pyrophosphate. 10 sacks Aquagel. 4,664-5,175 83-78 36-40 _ --- ------ 10 sacks Aquagel, 75 lb pyro phosphate. 5,176--, 585 5,5854,810 83 3842 5 86 40 lb pyrophosphate. 16 sacks Aquagel, 15 sacks Baroid, __ - -------- -------- -------- 30 lb p opbosphate. Only water added. 5,810-6,168 6,168-6,431 84-86 -------- ----------------- -------- ------- ------- -------- Only water added. 6, 43t-6,729 82 40 8 86 Only water added. = 6, 72D -7,02D 80-82 _ - _ _ ----- -------- 10 sacks Aquagel. I Changed mud after settincastag. I After 7 020 ft was reached, =hole was plugged back to 2,662 ft, and a sidetracked hole was arllled and casing set at 3,018 ft. Cement used in these operations oontam. inated the mud. Additives used to correct it are not shown on this chart. 520 EXPLORATION OF NAVAL PETROLEUM RESERVE NO. 4, ALASKA, 1944-53 HOLE DEVIATION Above 6,000 feet, measurements with the Totco (Technical Oil Tool Co.) Recorder indicated very little deviation from vertical. Most of the readings were less than 10, and only 3 were above 10. Below 6,000 feet the hole was too small for the Totco instrument, and an Eastman directional survey was made. Devia- tion and direction measured with the Eastman tools are shown in the following table; the increase in deviation, which is 30-40 below 6,000 feet, was seemingly caused by more steeply dipping beds. The sidetracked hole, begun at 2,552 feet in a vertical hole, increased from 3° off vertical at 2,572 feet to 8045' at 2,855 feet. Direction of deviation, lower Part of Fish Creek test well 1 Depth (feet) I Deviation I Direction 6,000 0055' N. 200 E. 6,200 3000' N. 020 E. 6,400 3030' N. 150 E. 6,580 3055' N. 250 E. 6,600 4000' N. 250 E. 7,000 3040' N. 370 E. ELECTRIC -LOG AND VELOCITY SURVEYS Sled -mounted hand -recording Schlumberger equip- ment was used to make the 8 electric -log runs needed to log the well from 187 to 7,013 feet. The unusually high resistivity shown by the upper part of the resistivity curve (which decreases irregularly from 130 ohms at 195 feet to 5 ohms at 600 feet) is caused by permafrost, which increases the resistivity of the rock. The spon- taneous potential curve is also slightly affected by the frozen ground. Two runs were made in the side-tracked hole, and an additional run was made in the original hole through the oil-producing beds at 2,900-3,060 feet. The second run showed very little penetration of the rock by mud in the 19 days since the rock in that inter - val was first logged. The runs are listed in the follow- ing table, and runs 1-8 are shown on the graphic log (pl. 32) . Electric -log runs in Fish Creek test well 1 Run Depth (in fat) 1------------------------------------------- 187-1,031 2------------------------------------------- 11047-2,291 3------------------------------------------- 2,291-3,060 4------------------------------------------- 3,060-4,147 5------------------------------------------- 4,147-5,079 Rerun--------------------------------------- 2,900-3,060 6------------------------------------------- 51079-5,581 7------------------------------------------- 5,581-6,046 8------------------------------------------- 6,046-7,013 9------------------------------------------- 2,500-2,910 10------------------------------------------ 2,915-3,002 United Geophysical Co., Inc., used a shot hole 1,320 feet from the well to make a velocity survey. The average velocity recorded in the well was about 8,000 feet per second at 1,000 feet, increasing to 9,000 feet per second near 7,000 feet. Beds above 600 feet had a velocity of 9,476 to 9,833 feet, reflecting the presence of permafrost near the surface. LITERATURE CITED Goddard, E. N., and others, 1948, Rock color chart: Washing- ton, D. C., Nat. Research Council. Grye, George, and others, 1956, The Mesozoic sequence in the Colville River region, northern Alaska: Am. Assoc. Pe- troleum Geologists Bull., v. 40, no. 2, p. 209-254. Grye, George, Patton, William W., Jr., and Payne, T. G., 1951, Present Cretaceous nomenclature of northern Alaska: Washington Acad. Scl. Jour., v. 41, no. 5, p. 159-167. Payne, T. G., and others, 1951, Geology of the Arctic Slope of Alaska: U. S. Geol. Survey Oil and Gas Inv. Map OM 126. Schrader, Frank C. and Peters, W. J., 1904, A reconnaissance in northern Alaska: U. S. Geol. Survey Prof. Paper 20. Tappan, Helen, 1951, Northern Alaska index Foraminifera: Cushman Lab. Foram. Research Contr., v. 2, p. 1-8, pl. 1. Whittington, C. L., 1956, Revised stratigraphic nomenclature of the Colville group in George Gryc and others, The Meso- zoic sequence in The Colville River region, northern Alaska: Am. Assoc. Petroleum Geologists Bull., v. 40, no. 2, p. 244-253. o>r r • THE STATE Department of Environmental 011-1LASKL'1 GOVERNOR SEAN PARNELL RECEIVED FEB 0 7 2014 February 4, 2014 A0GCC Certified Mail, Return Receipt Requested Article No.: 7012 2210 0002 1216 2391 Wayne Svejnoha BLM — Division of Resources 222 W 7th Ave, #13 Anchorage, Alaska 99513 Conservation Division of Spill Prevention and Response Contaminated Sites Program File: 320.38.010 SCANNED 0 2 2014 Re: Potentiall Responsible Party Notice Letter and Information Request NPRA Legacy Wells - General Hazard ID: 26125 Ledger Code: 14339387 Dear Mr. Svejnoha: 610 University Ave. Fairbanks, Alaska 99709-3643 Main: 907.451.2181 Fax: 907.451.5105 This letter is to advise you that the Alaska Department of Environmental Conservation (ADEC) has identified the 136 legacy wells within the National Petroleum Reserve in Alaska (NPRA) as potential contaminated sites. Some of these wells require extensive cleanup of oil and other hazardous substances released to the environment. Since you are identified as a current or past owner and/or operator of these sites, please be advised you may be financially responsible or liable for the investigation and /or cleanup of any hazardous substance contamination that might be present. Alaska Statute 46.03.822 establishes who is liable for contamination. Records available to the ADEC indicate that you meet one or more of the following criteria: » owned or controlled the hazardous substance at the time of its release; » own(ed) or operate(d) the property or facility from which the release occurred; » owned or operated property at which the hazardous substance came to be located; and » arranged for transport, disposal or treatment of hazardous substances that were released. Site History From 1944 through 1982 the US Government drilled 136 wells to explore for oil and gas resources in the NPRA. It is our understanding that other federal agencies and some private companies may have operated or managed these sites in the past. We have also been informed that 23 of these well have been conveyed to public and private entities. The ADEC currently lists 14 of the 136 legacy wells on our database of contaminated sites. The Bureau of Land Management (BLM) is identified as the responsible party for the following sites. Wayne Svejnoha 0 2 February 4, 2014 • BLM Cape Halkett Drill Site (File # 300.38.108) • BLM East Simpson #2 (File # 300.38.109) • BLM East Teshekpuk Drill Site (File # 300.38.110) The U.S. Army Corps of Engineers, under the Formerly Used Defense Sites program, is working with ADEC under the Defense States Memorandum of Agreement on cleanup actions at the 11 Umiat test well sites. BLM is identified as the landowner in our records, and as such is identified as a potentially responsible party in addition to the Department of Defense: C Umiat Test Wells 1-11 (File # 335.38.001) The information contained in these files is part of the public record. Our databases are accessible on the Internet at: http://dec.alaska.gov/spar/csp/db_search.httn Additional Actions Needed ADEC sent a letter on July 11, 2013, identifying an additional 15 legacy well sites with confirmed releases (enclosed). As stated in the letter, ADEC recommends that BLM develop a plan to address known, suspected, and unknown releases at the legacy well sites, in coordination with the appropriate regulatory agencies. We expected a response to this letter before now. Please respond to this letter within 30 days. After we receive and review your response we will determine what additional actions will be taken regarding each site with known or suspected contamination. In addition, with your response, please complete and return the enclosed questionnaire requesting more information about past operators. In accordance with Alaska Statute Title 46, ADEC is authorized to provide regulatory oversight for any contamination response efforts initiated by the responsible party. However, if response actions by the responsible party are not satisfactory to ADEC, we may then assume the lead role in the investigation and cleanup efforts. In the event that State response actions are necessary, the responsible parties may be held financially liable for any response actions taken by the State. Alaska Statutes 46.04.010 and 46.08.070 establish cost recovery procedures for certain costs, including oversight activities, incurred by the State in responding to pollution incidents. If you are determined to be a responsible or liable party, ADEC may bill you at a later date for our expenditures associated with this pollution incident. Expenses for which we may seek reimbursement include: Staff time associated with general or technical assistance; work plan review; project oversight; general project management; legal services; interest; travel; equipment and supplies; and any contracting costs. Pursuant to Alaska Statute 46.08.075, the State may also file liens against all property owned by a person who is responsible or liable for State expenditures. Please respond in writing within thirty (30) days from the date of this letter addressing your intended actions with respect to this pollution incident. If you believe someone else is responsible for this pollution incident (e.g., a past owner or operation of the site) or if you have any questions concerning this matter, please contact Mr. Fred Vreeman at (907) 451-2181. The attached "ADEC Information Request" describes the minimum information expected in your response. Additional information may needed to evaluate the risks and responses required at each legacy well site. Sincerely, Fred Vreeman Environmental Program Manager G:\SPAR\CS\Contaminated Site Files (38)\320 National Petro Reserve Area\320.38.010 NPRA Legacy Wells General\2-2-2014 Letter\PRP Letter All Wells.docx Wayne Sveinoha Enclosure: 0 3 • ADEC Information Request Concerning Contaminated Sites BLM Legacy Wells Dispute letter date July 11, 2013 February 4, 2014 cc: Bud Cribley, Director, Bureau of Land Management Steven Cohn, Deputy Director, Bureau of Land Management Jolie Pollet, Branch Chief, Bureau of Land Management Robert Brumbaugh, Geologist, Bureau of Land Management Michael McCrum, Environmental Engineer, Bureau of Land Management Larry Hartig, Commissioner, Alaska Department of Environmental Conservation Lynn Kent, Deputy Commissioner, Alaska Department of Environmental Conservation Kristen Ryan, Director, Alaska Department of Environmental Conservation Lori Aldrich, Program Manager, Alaska Department of Environmental Conservation Steve Bainbridge, Program Manager, Alaska Department of Environmental Conservation Jennifer Roberts, Program Manager, Alaska Department of Environmental Conservation ADEC Response Fund Administration GASPAR\CS\Contarr nmted Site Files (38)\320 National Petro Reserve Area\320.38.010 NPRA Legacy Wells General\2-2-2014 Letter\PRP Letter All Wells.docx 0 0 ADEC INFORMATION REQUEST Concerning a contaminated site(s) Re: Legacy Well Sites in and near the National Petroleum Reserve, Alaska (NPRA) Please precede each answer with the number of the question to which it corresponds. Please direct any questions concerning this information request to Fred Vreeman, Contaminated Sites Program, 610 University Avenue, Fairbanks, AK 99709; Phone: 907-451-2181. Thank you for your cooperation. 1. Provide name and company affiliation of the person answering the questionnaire. 2. Provide copies of all studies, reports, and supporting information (including preaquisition assessments and work done on behalf of other parties) which you have knowledge of which address past and/or present environmental conditions at the site. Identify the name, title, address, and phone number of the party(s) who are responsible for preparing the studies or information. Information which has been previously submitted to ADEC need not be submitted again (unless specifically requested in a subsequent communication) if you can provide the name of the office (and name and title of the DEC officer if known) to whom the report was previously provided. 3. Provide a description of any ongoing or planned investigations or cleanup work at the site. Identify the names, titles and phone numbers of the individuals responsible for preparing the studies or information. 4. Provide a description of known releases at the site (date of occurrence, quantity released, type of substance released, etc.) and a description of corrective measures that were taken. Provide information on any suspected releases which may have or are occurring. 5. Describe the nature of past and present operations at the site. In particular, any actions that may have caused the release or threat of release at the site. Describe the physical characteristics of the site including major structures, water wells, fuel or waste storage systems, drainage or septic systems, etc. 6. Provide a list of any permits issued by the Department which relate to activities at the site and a list of RCRA identification numbers (U.S. EPA identification numbers) which may be held. 7. Identify persons to whom you leased all or a portion of the property and describe the nature of their operations. 8. Identify the person(s) who used the site for disposal of substances deposited there, if any. 9. Provide copies of manifests for any hazardous waste and/or petroleum contaminated materials taken to or from the site. 10. Provide a list of persons and their phone numbers and addresses of persons who have knowledge about the use of hazardous substances at the site. 11. Provide information regarding the existence of insurance coverage for damages resulting from releases of hazardous substances and copies of all such insurance policies, both currently in effect and in effect during the periods of activity in question. 12. Describe the acts or omissions of any person, other than your employees, agents, or those persons with whom you had a contractual relationship, that may have caused the release or threat of release of hazardous substances at the site. a. In addition, describe all precautions that you took against foreseeable acts or omissions of any such third parties. 13. Describe the care you exercised with respect to the hazardous substances found at the site. 14. Describe the physical characteristics of the site including structures, wells, drainage systems, etc. THE STATE July 11, 2013 'ALASKA GOVERNOR SEAN PARNELL Wayne Svejnoha Supervisory Minerals & Energy Specialist 222 W 7th Avenue, #13 Anchorage, Alaska 99513 Re: BLM Legacy Wells Dispute Dear Mr. Svejnoha: Department of Environmental Conservation Division of Spill Prevention and Response Contaminated Sites Program 610 University Ave. Fairbanks, Alaska 99709-3643 Main: 907.451.2181 Fax: 907.451.2155 The Alaska Department of Environmental Conservation (ADEC) — Contaminated Sites has reviewed the National Petroleum Reserve in Alaska: 2013 Legacy Wells Summary Report dated February 2013, containing updated information on the status of the 136 Legacy Wells located in the National Petroleum Reserve — Alaska (NPR -A), and the draft National Petroleum Reserve in Alaslm. 2013 Legacy Weiss Strategic Plan dated May 2013. ADEC has also reviewed the response by the Alaska Oil and Gas Conservation Commission (AOGC). We concur with the response by ACIGC and have no further comment regarding the priorities. We do have comments about the investigation and cleanup plans presented in the report. With this letter we arc outlining regulatory requirements related to the environmental work that is proposed and required as part of these cleanups. ADEC is concerned that the 2013 Legacy Wells Strategic Plan prepared by the BLM does not include either assessment of the contingency for assessment of known, likely, or unknown but possible contaminant releases. In addition, BLM plans for surface cleanup of these wells should be made clear in the plan. At least one of these legacy wells has extensive PCB contamination and has resulted in a multi-year cleanup totaling tens of millions of dollars. At others, solid waste disposal practices have resulted in releases to the environment with estimated cleanup costs in the hundreds of millions. Known releases documented in the records we reviewed include crude oil, gasses, refined oil and fuel, drilling fluids that include various organics, metals, and other chemicals, and unknown contaminants from drums and other containers observed to be damaged and abandoned at the various well sites. There are 13 legacy well sites with known releases currently on the DEC contaminated sites list. Many of these are in the process of being addressed, cleaned up, and closed. From our Waited records review there are 15 additional legacy well sites with confirmed releases. These should be prioritized for initial records reviews and then added to the BLM contaminated sites list under our cooperative agreement. Suspected releases include fuel releases from operations, storage, and fuel spills at the sites, impacts to various surface water bodies from spilled fluids during drilling and breaches of containment at reserve and flare pits, continued surface runoff from drilling fluids uncontained at several sites, and down -hole substances that were ejected from the holes over time or during blowouts or drilling operations. 1 Wayne Sve noha ? July 11, 2013 Y The.BLN-1 plan to address these known, suspected, and unknown releases at legacy well sites is notably absent from the documents presented to date. The three primary regulatory agencies that need to be involved in the plan are ADEC — Contaminated Sites, Alaska Oil & Gas Conservation Commission, and ADEC — EH/Solid Waste. Other agencies will need to be consulted. as well. Below we provide recommendations for a coordinated plan using the Uniform Federal Policy for Quality Assurance Project Plans (UFP-QAPP) that will involve all of the regulatory agencies in one coordinated manner. This will allow BLM to address these sites in a consistent and coordinated project which fulfills all of the regulatory requirements so that the sites do not need to be re -visited in the fu=e xvhen they are closed after this project. Attached are our comments on each specific well. The acronyms used on the list include terms that are typically used in a CERCLA type investigation however they are also suitable for investigations conducted under the State of Alaska cleanup rules. These include the following; Historical Records Review (HRR) 'chis is recommended for almost all of the well sites. Much of the information required for these reviews is already contained in various reports and appendices or in BLM files. The Historical Records Review should document the type of releases that might have occurred from drilling operations as well as historical use of the site, and should capture all available information on the drilling fluids used and any product produced or released. Preliminary Assessment (PA) This is recommended for almost all of the well sites. A Preliminary Assessment is a limited scope investigation that provides an assessment of information about a site and its surrounding area to distinguish between sites that pose little or no threat to human health or the environment and sites that require further investigation. The PA is a CERCLA defined document and typically does not require sampling. Site Inspection (SI) If the PA recommends further investigation, then an SI is necessary. The SI is a CERCLA defined document, and it is analogous to an initial report of contamination under state cleanup rules. On some legacy well drillings sites it is evident now that an Sl is required just from a review of the reports. An SI investigation typically includes the collection of samples to determine what contaminants are present at the site and whether they are being released into the environment. An approved site specific workplan is required under both CERCL-A and 18 AAC 75 prior to SI sampling. The SI typically is not intended to develop a full site characterization, but is limited to determining the presence or absence of a release. If contamination is found after completion of the HRR, PA, and SI then a RI/FS under CERCLA, or a Site Characte-rizatiowlteportandcleanup-Alas,under-l-fi-AAC7iis`required. -- ----- - -- — --------- - DEC recommends that BLM incorporate into the strategic pian the processes outlined in this letter. A team of agencies composed of AOGC, DEC -CS, EPA as required, and DEC -EH should address regulatory and technical requirements for these well closures. By cooperating and working together with the regulatory agencies BLM will save time and expense, and regulatory uncertainties will be avoided. The strategic plan should reference a project to prepare a generic workplan. DEC suggests that BLM utilize the generic UFP-QAPP workplan format for the required environmental work. If properly prepared, the workplan could encompass most of the investigations and cleanups required at these sites over multiple years. At other multi -site projects we have found this to be an effective way to reduce uncertainties and risk in these types of investigations. A very small site specific FSP could then be developed as BLM approaches each drilling site. Regulatory decisions made during workplan development would provide more certainty in the planning process for cleanups. G:\SPAR\CS\federal F2cilitie3\Ci%ih2n 1-cdcrrt Agr=ics\DOl\B[.nl\1'roiens\lxgAey Wells\7 11 13 Luter to KIN on lxbxy wells.doex Wayne Svejnoha 3 0 July 11, 2013 Please review the attached list of specific sites. If you have any questions, please do not hesitate to call me at 907-451-2181 or by email at fred.vreeman@alaska.gov. I look forward to working with you as the Federal Government fulfills its requirement to clean up these well drilling sites in Alaska. Sincerely, y' Fred Vreeman Environmental Program Manager Enclosure: SPAR Response with Legacy Wells cc: Bud Cribley, State Director, Bureau of Land Management Steven Cohn, Deputy State Director for Resources, Bureau of Land Management Jolie Pollet, Branch Chief, Bureau of Land Management Robert Brumbaugh, Geologist, Bureau of Land Management Michael McCrum, Environmental Engineer, Bureau of Land Management Cathy Foerster, Commissioner, Alaska Oil and Gas Conservation Commission Larry Hartig, Commissioner, Alaska Department of Environmental Conservation Kristen Ryan, Director, ADEC Division of Spill Prevention and Response Steve Bainbridge, Program Manager, ADEC Contaminated Sites Program Jennifer Roberts, Program Manager, ADEC Contaminated Sites Program GASI'AR\CS\Fedcrrl Fo61ibLy\Gvi6n Falctul AgcnnCs\DOI\BI.N1\Proitcts\lA'6.1' q W03\7 11 1314tur to Aim\I on Ug2cy Wclls.doex Well Name operator I RP I Land Simpson Core Test #5 1! Na 1 BLM Simpson Core Test #6 US Na I BLM Simpson Core Test #7 us Na 1 Bl. M Sin son Core Test 98 US Navy 113LM Si son Core Test #9 U5 Na I BLM Sinwson Core Test #1f) U.S Navy! BLM Core Test #11 AOGCC Subsurlaca I BLM Core Test #12 FUSNa a I BLM Core Test #16 a 18LM Core Test #17 US Na 1 BLM Core Test 018 US Na I BLM Core Test #19 US Na 1 BLM t Core Test #20 US Navy 1 BLM i Gore Test #21 2S Na 1 BLM I Core Test #22 US Na 111•LM I Core Test dnlf fluids left in hole i BLM Core Test �#2vy I BLhA n CareTest #25 US Na Y I BLM K Core #1 US Navy i BLM 1 -t- *1 SPAR Response with Legacy Wells Lisl.xlsx 2013 Risk Ity CSP Status I Fito tllHazid Rolea5e7 Nnne None IYOMWil Low RNooe ane Nona Unused, Unused. I None Unused, i None Uncased, None None None None (None Unknown Unknown Page 1 of 14 •I AOGCC Subsurlaca AOGCC Surface SPAR W arkgroup Notes Status Status Need HRR, PA, S1 no data no data Need HRR. PA. SI no data no data Need PA ind drill fluid assessnsenl & workplan drillin 11uids left in hole no data Need PA ind drill fluid assessment & work an drilling fluids left in hole no data Need PA incl drill Ifusd assessment & work Ian dnlf fluids left in hole no data Need PA nc drill fluid assessmcnf &work Ian dnllxs fluids left rn hale no data well skc-lch provided by Need PA ind drill fluid BLM not consistent with assessment & work Ian AOGCC or BLM data no data Need PA ind drill fluid assessment & work Ian dnflin fluids left in hole no data Need PA and 51 ind 13611 fluid assessment. workplan rid sampling stressed debfis, partially as blowout and fire rove elated site areas Need PA incl drill fluid assessment & workplan dn lling fluids left in hole no data geed PA ind drill fluid assessment & wOTk Ian drij I ing fluids teff in hole no data Need PA incl dfifl nutd assessment & work Ian drillin fluids left m holo no data Need PA incl drill fluid assessment & work Ian drillin ituids left in hole no data Need HRR. PA, SI no data no data Need PA incl drill fluid assessment & work Ian drillin fluids felt in hole ria data Need PA incl dnll fluid assessment & work larx drillin fluids left in hole no data Need PA incl drill fluid assessment & work Ian drillin fluids Teff in hole no data Need PA ind dnll fluid drflfing fluids and ball assessment & work len peen hammer left in hole no data overshot, drill collar, rock revegelated —131 Need HRR, PA bit, and N -reds left in hole can't find it Review Report as PA. No evidence of sheen, stressed veg, or drilling Not abandoned, waste on surface. Veg ----_— , ,raw,, plunaed to surface site not cleared •I SPAR Response with Legacy Wells LisLxlsx Page 2 of 14 is • vi nce o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator I RP I Land Mgr Priority CSP Status file #IHazid Release? SPAR Workgroup Notes Status Status plugging operations inadequate and Wellhead tell as Umiat 43 US Navy I BLM I FUDS None pending dos 335.38.00113092 Yes. see file 'Plugged by BLM in 2004 incomplete historic site? plugging operations inadequate and Wellhead left as Umiat #4 US Navy I BLM / FUDS None pending dos 335.38.001!3079 Yes, see file Plugged by BLM in 2004 incomplete historic site? plugging operations inadequate and Wellhead left as Umial 98 US NaMy I BLM I FUDS None pendinq dos 335.38.001/3D81 'Yes, see_ _file Plugged BLM in 2004 incomplete historic sile? plugging operations inadequate and Wellhead left as Umiat #1'0 US Navyj BLM_I FUDS None pendingdos 335.38.00113082 Yes, see fila Plu ed by BLM in 2004 incomplete historic site? Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 7868'. Drilling Cleanup. Photos - evidence mud and diesel to Awuna #1 USGS I BLM Medium None None Yes of erosion into lake surface. > 100 _Pylons Need HRR, PA, SI with sampling. Drilling mud Wood , metal, assessment. Surface Plugged to 2039'. Diesel plastic debris. Fast Simpson #1 USGS I BLM Low None None Yes Cleanup. to surface. >10D Pylons Need HRR, PA, SI with Wood and metal Drilling mud assessment debris. Pylons - Photos straw areas of no Plugged to 2047'. Diesel Tankage for lk ' #1 USGS / 8LM Low None None Yes ve elation. to surface. flammable fluids Need HRR. PA, SI wdh sampling. Drilling mud assessment. Surface Plugged to 1400'. Drilling Wood and metal Koluktak #1 USGS I BLM Low None None LYes Cleanup. mud & diesel to surface debris Pylons Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 1894'. Diesel Wood and metal Ku am 91 USGS I BLM Low None None Unknown Cleanup. to surface debris. Pylons Need HRR, PA, Sl with sampling_ Drilling mud assessment_ Surface Plugged to 4464'. Drilling Wood & metal Kuyanak #1 USGS I BLM Low None None Yes Clean mud & diesel to surface debris. Pylons Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Photos show Plugged to 1840'. Diesel Plastic and metal Lisburne 41 USGS I BLM Low None None Yes stained soil to surface debris. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 8192'. Drilling Wood and metal North Iii ok $1 USGS I BLM Low None INone Yes Cleanup. mud & diesel to surface debris - Page 2 of 14 is • Well Name Peard South Meade #1 1 RP 1 Land 1BLM BLM #1 4USGS ! BLM SPAR Response with Legacy Wells Usl.xlsx ;013 Risk &W CSP Status File XlHazkl T Page 3 of 14 AOGCC Subsurface AOGCC Surface WAR Workgroup Notes Status r Status � deed HERR, PA SI with iampling. Dining mud rssessment- Surface ;leanup. Site photos show areas of stressed iegetalion. No issues Plugged to 2232'. Diesel Wood and metal soled in USGS re ort. to surface debris. Pylons Need HRR, PA, SI with sampling_ Drilling mud assessment Surface Plugged to 2026'. Diesel Wood and metal Cleanup. to surface debris. P Ions Add to She list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Od reported bubbling to the surface within reserve pit in 1982. Oily residue and sheen observed adjacent to east side of reserve pil, down hole material at the Plugged to 1875. Diesel Wood and metal surface to surface debris. P ons Add to Site list. Need HRR, PA, S) with sampl'uig. Drilling mud assessment - Surface Cleanup. Reserve pit berm had breaches anowirrg water to exit. Oil - stained sediment was observed above the Plugged to 1478'. Diesel Wood and metal waterline of the I. to surface debris. Site photos may show hydrocarbon sheen on Plugged to 2600'. Drilling Wood and metal water in well cellar mud & diesel to surface debris. Pylons Add to Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Berms have been breached an allow water to flow out of reserve piUllare pit. Rising bubbles of ail observed in Hare pit 1484. Photos Show Plugged to 1825'. Diesel Metal debris. ra.. v-1 v.nnnralinn to Surface ... 0 •I SPAR Response with Legacy Wells Lisl.xlsx Page 4 of 114 0 0 vi encs o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator 1 RP f Land Mgr Priority CSP Status File #fHazld Release? SPAR Workgroup Motes Status Status Need HRR, PA, Sl wrlh sampling. Drilling mud assessment Surface Cleanup. Breaches in bemi allow water to flow into and out of reserve pit, sheen on Plugged to 2700' Diesel Wood and metal West Dease #1 USGS l BLM Low Nona None Yes surface water in well cellar to surface debns. Pylons Add to Site list. Need HRR,. PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Water flows into the pits through breaches on the eastern berm and out of the pits through breaches on the northern and western berms. Downhole material Plugged to 228'9'. Drilling Wood and metal South Harrison Bay #1 USGS f BLAB Low None None es Present at surface mud & diesel to surface debris. Add to Site list. Need HRR, PA, SI with sampliing. Drilling mud assessment. Surface Cleanup. Stressed vegetation noted and apparent in site pholos. Plugged to 2443'. Drilling West Fish Creek #1 USGS 1 BLM Low None None Yes Drilling mud around well mud & diesel to surface Pylons Need HRR, PA, SI with sampling. Drilling mud assessment, Surface Cleanup. High TPH Plugged to 1977'_ Drilling wellhead sticking concentrations underneath mud under plugs. Diesel up. Wood debris. Fast Simpson #2 USGS 1 BLM I Low _ Active 300.38.10912691 Yes, see file the rig inundation to surface Pylons South Barrow 94 US NavyiNorth Slope Bono None None None Unknown Need Surface Status completed gas well - no data South Barrow #5 USAF - BLM Unknown None None None. Unknown Need Surface Status completed gas well no data South Barrow #& US Na /Norlh Sto Burg None None None Unknown Need HRR, PA, St no data no data South Barrow #9 US NavyfNarih Slop2 Boro None None None Unknown Need HRR, PA, Sl no data no data _ South Barrow #10 US Navyfflorlh Sto Bora None None None Unknown Need Surface Status com ted gas well no data South Barrow It12 US Na /North Slope Baro None None None Unknown Need HRR, PA. Sl no data no data BLM well skMh not consistent with AOGCC South Barrow #14 US NavyMorth Sloe Boro None None one Unknown Nsed HRR. PA, St data no data Need PA ind drill fluid well left filled with drilling South Barrow #16 US NavyiNotih Slope Bora None None None Unknown assessment & workplan mud and diesel no data Need PA incl drill !turd tubing in well. no perfs, Soulh Barrow 017 US Na /North Sloe 13ora None None None jUnknown assessment & work fan I unknown fluid, I no data Page 4 of 114 0 0 SPAR Response with Legacy Wells Lisl.xisx Page 5 of 14 •I E CYfuu .v v AOGCC Subsurface A Surlaco TEHILM T013 Risk CSP Stilus File #IHaaid Historic Rekeasa7 SFAR YUnrkgroup Nates 5latus at US $1<ntus Well Name flperatar f RP f Land Mgriority Unknown Need Surface Status corn feted as well no data 5aulh Barrow #18 US Na INorlh Slo a Bora None None None Unknown Need HRR, PA, St no data no data Walak a #1 USGS! Unknown None None None rsg 890`. Multiple cement plugs of unknown volume. Shallowest None None Unknown _ Need HRR, PA, SI SOD' no dada Gubik #1 US Na d Ur#cnown Low Add to Site list. Need HRR. PA. SI with sampling. csg Q SOD' Well blowout Drilling mud assessment. from zone al 1SOT during Surface Cleanup. Photos plugging operations show disturbed/ slashed Plugging never completed after blowout. no data Gub* #2 US Na ! Unknown Low None Nora es areas two downhole Dement plugs of unknown depth Mone None Unknown Need MR. PA. Sl and volume no data Grandstand #1 US Navy 1 Unknown None Add to Site list. Need HRR. PA, SI with sampling. Dnliing mud assessment. Surface Cleanup Sediment from the reserve pit was excavated and spread over the pad to drill a 2nd well at this location, Upon completion of the 2nd well. the sediment was pushed back into ft reserve pit.. Area does not appear to be revegetaling. perhaps from the presence property plugged but no of drilling mud at the data on abandonment None None Yes surface status no data W 7 Foran #1 " USGS I Unknown Low on Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Slressed vegetation, photos show plugged, but not open csg; metal & Active 306.3$.108f2689 Yes. see file site underwater abandoned at surface corwsele debris under 5' of water, Cape Halken #1 " US Na (Unknown Low None Unknown !Need HRR, PA. SI es to 27' open C_s Min a Veloei #1 U5 Na f t3LM one None csg @ 31" 280' of drill pipe, drill collar, and Core Unknown Need HRR. PA, SL barrel left rn hole. rove etaled Ournalik Core #i US Na / BLM None -No obsery None !None Page 5 of 14 •I E SPAR Response with Legacy Wells Lisi.xlsx Page 6 of 14 • • WI F3nCe Q BLM 2013 Risk Historic AOGCC Subsurface ADGCC Surface Well Name Operator t RP I Land Mgr Priority CSP Status File #IHazid Release? SPAR Workgroup Notes Status Status Need HRR, PA, Workplan for St with Sampling. Drilling Mud Assessment. Surface Cleanup. Photos show debris, stressed No csg. 15' of drift pipe Oumalik Caro #2 US Navy 1 ULM Low None None yes ve elation and rock hit left in hole. no data Need HRR, PA, Workplan for Si with Sampling open csg & other Drillip) Mud Assessment. piping sticking out Surface Cleanup_ Reports of ground; wood, of debris, drilling muds on melat, conciele Oumalik Core 011 US Navy 1 BLM Low None None Yes surface (__q to 9', debris open csg sticking out of ground; wood & metal 0umalik Core #12 US Navy I BLM Low None None No Need HRR, PA, SI no data —__—debris _„ debris buried by landslide. Need HRR, PA, St, Well not no dala on Sentinel Hill #1 US Navy 1 BLM Low None None Unknown ap panent in site Rholos Csq to 3t1'. underwater status Need IQR, PA, SI. No evidence of sheen, open crag slightly stressed veg, or drilling above ground waste on surface. Veg 37' of csg, drilling fluids level; wood and S imp son Core Test #1 US Navy 1 BLM Low None None No appears healthy lett in hole metal debris Need HRR, PA, St. No evidence of sheen, stressed veg, or drilling waste on surface_ Veg 76'01 Csg, drilling fluids Simpson Core Test #2 US Navy I BLM Low None None No appears healthy left in hate no data Need HRR, PA, Sl. No evidence of sheen, stressed veg, or drilling waste an surface. Veg 61' of csg, drilling fluids Sim sun Core Test #3 US Navy I BLM Low None None No appears healthy left in hole no data Need HRR, PA, St. No evidence of sheen, stressed veg, ordrilling waste on surface. Veg --60' of crag, drilling fluids Sim eson Core Test #4 US Nayy t BLM Low Norse None No apecars healthy left in hole no data Need HRR, PA, St. No evidence of sheen, stressed veg, or drilling waste on surface. Veg csg cemented @25% open csg sticking Songsoncore Test #13 US Na 1 BLM Low None None No appears health dritin fluids IeR in hole_ out of round Need HRR, PA, SI. Vegetated, no evidence of crag cemented @2D'; open csg sticking Simpson Core Test #14 US Navy ! BLM Low None None No release. drillin fluids left in hole out of ground Page 6 of 14 • • SPAR Response with Legacy Wells Lisl.xlsx ism son Core Fest #26 t=vrdence or Medium AOGCC Subsur(aen ADGGC Surface 13LM 2013 Risk CSP Status File WHazid Historic Retease7 SPAR Wwkgroup Notes Status Status Well Name operator r RP 1 Land Mgr Priority Unko Need HRR, PA. SL US Na ! $LM open casing None Nave Vegetated. no ev4dence of cog set shallow; drilling slicking nut of Low No release- fluids left in hole round Simpson Core Teri #14a US Na !BLM Low None None & weilhead slick Need HRR. PA, SI crude nil left in hole open casing Need HIR, PA, Workplan Vegetated, no e+wdence of csg cemented 12181; slicking out of openregd ng No release. drillingfluid left in hole round Simoson Care Tesl #15 US Na !BLM Low None None d wooden Oellar, Need HRR, PP, SL Sate a9 r�110'. dolling fluids wood 8 metal ism son Core Fest #26 US Na ! BLM Medium None None res Sim sen Core Test 027 US Na J 13LM IJone None None Unko Sim son Gore Test #28 US Na ! $LM Low None Nave Yes clmnnnn Core Tesl #29 US Navy! BLM Low Norte No No Simpson Core Test 030 US Na 1 !BLM Core Test #30a JUS,Navy 1 BLM Low `None Prone n Gore Test #31 JUS Navy/ BLM None Page 7o(14 photos appear to show oil at surface, from a natural csg Q 350'. Completed in oil seep, seep, also drilling mud in oil well Open perfs. At 1welhead sticking sacks on the tundra one lime capable of up_ metal debris PI u ed b BLM in 2004. unassisled flow. and rustingbarrels 'Need HRR, PA, St. Site photos appear to show Oil csg cemented at surface, from a natural @i02;dnllutg fluids nn oily ground; csg seep- Plugged by BLM in including diesel and & weilhead slick vin 20014 crude nil left in hole out of ground Need HIR, PA, Workplan for Sl with Sampling- openregd ng ❑rilling Mud Assessment . out grouunnd in Surface Cleanup. Site d wooden Oellar, photos appear to show a p le of drilling mud about a9 r�110'. dolling fluids wood 8 metal 160 feel tram the welt tell in hole debris. Solid waste Need HRR, PA, Sl_ No evidence of sheen, stressed veg, or dri" waste on surface. Veg csg cemented at 1S2'; open csg. Wood a ears healthy dnknq fluids lett in hole and metal debris Need HRR, PA, SI. frilling mud at surface. but well is also in the middle of a large in oil seep; Open oil seep and surrounded by cog sticking up; pooled oil. Plugged by BLNI csg cemented A150'; wood & metal ser Holes in 20514- drillin fluids left in hole detail on oily ground; tog Need HRR. PA, Sl. Well is wellhead slick in the middle of a large oil seep and surrounded by csg cemented at 100% out of ground. pooled oil. Plugged by 131. dulling mud left in hole. wellhead leaking see noses in 2004 gas blowout at 423' gas Need HRR, PA, St. Leaky valve replaced in 2001, little evidence of contamination following valva on city ground; reg replacement- Plugged by csg cemented at 100'; & wellhead stick see notes BLM in 20174 iddifing fluids, left in hole out o1 round SPAR Response with Legacy Wells List.xlsx Page 8 of 14 • • yr enco o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator f RP f Land Mgr Priority CSP Status File glHasid Release? SPAR Workgroup Notes Status Status Need HRR PA, Workplan csg Cemente=d al for Sl with Sampling. 1028', cement plugs a1 Drilling Mud Assessment. 6387' and 5520'. Fish in Surface Cleanup. Drilling hole, drilling fluids Iefs in No data. Open Simpson Test Welt #1 ak US Navy1 BLM Low None INone yes muds near wellhead hale casing Need HRR, PA, Workplan for Sl with Sampling. Dolling Mud Assessment. Surface Cleanup Also Wellhead sticking evidence of a natural seep- above ground, Tar sheens in the summer ST from 2552 to 3018. wood, melel, and months. BLM is concerned csg @2915. Slotted liner concrete debris. Fish Creek #1 US Navy I BLM Medium None None Yes about exposure to wildlife to TO. Completed oil well Rusting barrels Need HRR, PA, Workplan for SI with Sampling. rasing cemented at 48; Drilling Mud Assessment. gas 0mv and explosion Surface Cleanup. Small gas while drilling at 863'; hole leak in wellhead flange, will Filled with fresh water to Wolf Creek 91 US Navy f BLM Low None Nano No flow if the valve iso en 330' No data. csg cemented a[ 53';hole left tilted with fresh water, Wolf Creek 02 US Navy 1 BLM Low Noire Nona No Need HRR. PA. Sl. fish in hole csg cemented at 107'; No data bridge plugs from 1447 to 1735 and from 554 to Wolf Creek #3 US Nayy I BLM Low None None No Meed HRR, PA, SI. 661, No data Add to Site list. Need HRR, PA, SI with sampling. csg slicking out of Drilling mud assessment ground with wood Surface Cleanup. Sheen on plug on top; solid surface water in well cellar, csg cemented at 30'; drill waste; wood hundreds of drums indicate pipe, drilling mud and debris; about 200 Skull Cliff Core iesl #1 US NaMy I BLM High None None Yes polential for cornlamrna[ion diesel left in hole nisling barrels Need HRR, PA, SI. Two open csg, wood drums are floating on a building; pylons; pond near the well. csg cemented at 1000', wood & metal Kaolak 01 US Navy 1 BLM t ow None jNone lNo Potential for hurried landfill. fdriltingluidsieftin hole debris Page 8 of 14 • • SPAR Response with Legacy Wells Lisl.xlsx 181-11119013 Risk Well Name Operator f RP ! land Mgr Priorlty CSP Status File 1NHazid #1 1 U Navy 19LM #1 JUS Navy/ umatik Ill US Na I BLM Low None None as[ Oumalik #i US Na !BLM Low None None #1 N East Topagoruk #1 USN l BLM Kniteblade #1 US Navy l BLM Page 9 of 14 Subsurface `AOGCC Surface SPAR Workgroup Notes Status Add to Site list. Need HRR, PA, SI with sampling. open flange Q Drilling mud assessment. Surface Cleanup. Drilling Gas well. Open ports. ground level. Mud pile overgrown with Drilling fluids and Metal & wood v , etallon and lichen tubulars lett in hole debris Need HRR, PA, SI. No evidence of sheen, stressed veg, or drilling csg cemented at 502'; open casing slicking out of waste on surface. Veg plug at 3470 to 3511'; ground. Wood appears heall drilling nuids left in hole debris. Open casing below Add to Site list. Need HRR, ground level. PA, SI with sampling- Revegetated. Drilling mud assessment. Numerous metal Surface Cleanup. Debris csg partially cemented at I support structures and drilling muds. Stressed 2762'. Plug at 2543% slicking up. vegetation Dridin mud left in hole Concrete debris, plate welded to pipe: l' of pipe rsg cemented at 1100'. sticking up - Need HRR. PA. SI. Drig fluids left in hole Wooden debris. Add to Site list. Need HRR, PA, SI with sampling. Driving mud assessment. open csg broken Surface Cleanup. Downhole material present csg cemented at 6073'. off and sticking up: at surface, area mostly original hole drilled to wood, metal, revegetated. Diesel still 7154'& junk len; concrete and other occupies the ground sidetrack hole left wilh debris. rusting dreulatioir lines. drillina fluids barrel Add to Site list. Need HRR, PA, SI with sampling. Dolling mud assessment. Surface Cleanup. Pile of tsg 10 1100'; pkig al open casing drilling muds is next to the 1049% drilling mud below sticking up. Wood, teller. No offical reserve pit plug: unknown fluids in metal, and glass noted o en hole debris. open casing Need HRR, PA, SI. BLM sticking up. Wood, stales that there was no metal, and glass debris at this site in 2012. csg cemented at 420% debris - •I 0 SPAR Response with Legacy Welts Lisl.xlsx Paye 10 of 14 0 0 w once a BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator I RP f Land Mgr Priority CSP Status File #IHazid Release? SPAR Workgroup Notes Status v F Status open casing sticking up. Wood, metal, & concrete debris rusting Need NRR, PA, SI. Reports barrels. One indicate solid waste csg cemented to 45';fish marked flammable Knileblade #2 US Navy I BLM Low None None No drums in hole hazard. open casing slicking up; metal & Krideblade #2a US Navy 1 BLM Low None None No Need HRR, PA, SI. csq cemented at 38% concrete debris Need HRR, PA, SI including learning assessment. Site partially No wellhead. submerged intermittently csg cemented at 80; Metal. Solid waste North Simpson Test Wel 4 US N2n I BLM Low None None No during the summer dri0ing fluids left in hole ? No dala crude wellhead. Need HRR, PA, St. Surface csg cemented at 685'; Wood and metal Umiat 01 US Navy J BLM I FUDS Medium Cleanup co 335.38.00113090 Yes, see file Cleanup drillinq fluids left in bole debris No wellhead. Gravel pad partially csg cemented a1486; revegelaled wood Need HRR, PA, SI. Surface cement plug from 440 to debris and pipe Umiat #i t US Na I BLM I FURS Low pending dos 335.38.00113083 Yes, see file Clea 490'; sticking u csg cemented at 7206'; vVefNwad- Gravel various plugs from 8250' pad revegetaled 7 South Sirnpson 01 US Navy I BLM Low None None Yes Need HRR, PA, SI. to surface No data Add to Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Large quantifies of ferrous oxide, zinc oxide, zinc carbonate, and barium sulfate were added to drilling muds. Stains apparent in photos. BLM field camp an site. Walls between the reserve and Pare pits have eroded. Wellhead and Water flows into surface gravel pad. ? No Wook #1 USGS I BLM Low lNone Name Yes water during break22L no data data Paye 10 of 14 0 0 SPAR Response with Legacy Wells Lrsl.xlsx BLM 2x13 Risk Well Name 10porator I RP I Land Mgr Priority CSP Status I File #IHazid Arca- Barrow Cure #1 US Na l til.M Avak 01 US Navy I BLM Barrow Bi R' #1 US Na I BLM Barrow Cafe Rig Test 91 US Na I BLM #2 I US Navy I BLM #1JUS N,a I BLM H' h NOr1e None Test Well #1 US Test Well #2 US Barrow Test Wetl #31115 Na IN©r1h Slo c Bora IAedium None None Unknown Page 11 of 14 Subsurface -FAOGCC Surface SPAR IWorkgfoup Notes Status _ ___ araiu5 Need HRR, PA, SI. Surface Cleanup, Photo CIMG0218 csg cemented at 53` shows area of disturbed tubing hung to 708': hole open casing vegetation that should be heft filled with drilling mud slicking up; wood & investi algid durin Sf and diesel metal debris open casing Need HRR. PA, St. Surface csg cemeoled at BIF. sticking up; wood & Cleanu-. lu set at 1348' metal debris Not abandoned, site not cleared, Need HRR, PA, SI. Surface open easing 7? No Cleanup no data data Not abandoned, site not eteared, Need HRR. PA, SI. 'Surface open casing 77 No Cteanu no data data Need HRR, PA, St with sampling. trilling mud assessment. Surface Cleanup. Drilling Muds on Not abandoned, site -slowly revegelatmg site not igred, More information on drilling open casing 7? No mud specifics rs being researched no data data Need 1lRR, PA, SI wdh sampling. Drilling mud wellhead leaking assessment. Surface cemented Csg to gas!? Wood & Cleanup- Cellar does not 1270;slotted liner to metal debris. Area retain water 1956': tbg to 1939 affected 50'x50' Need HRR, PA. SI. Drilling Csg cemented at mud assessment. Surface 441'.hole Iell willed with open pipe; metal & Cleanup- On mads stem water concmie debris Need HRR, PA, Sl. Drilling Csg cemented al 2260'; mud assessment- Surface periorated liner to TD. wood, metal & Cleariu . fln road s stem lin Completed well. Conerete debris Need HRR, PA, SI with sampling and workplan. Drilling mud assessment. Surface Cleanup. Drilling +csg cemented at 10461: open c5g slinking mud at surface. Sheen on hole left filled with drilling up; wood & metal surface wafer in well cell larQuids and wafer. de" 0 SPAR Response with Legacy Wells Lisl.xlsx Well Flame Operator I RP I Land Mgr BLM 201$ Risk Priority CSP Status File #ltiazid yr once oF— Historic Release? SPAR Workgroup Notes AOGCC Subsurface Salus g AOGCC Surface Status no data. Likely revegetaled. Removed from our list of wells of concern in < 50', no csg, no API#, October, 2012 Oumalik Foundation Tess A US Navy I BLM None-uncased hc None None lUnknown Need HRR, PA. not in AOGCC database Monlht Meeting no data. Likely revegetated. Removed from our fist of wells of concern in < 50', no csg, no API#, October, 2012 Cumalik Foundalion Test b US Navy I BLM None-uncased hC None jNane Unknown Need HRR. PA, not in AOGCC database Monthly Meeting no data. Likely revegetated. Removed From our irsl of wells of Concern In < 50', no csg. no API#, October, 2012 Oumalik Foundation Test A US Navy I BLM None-uncased hc None lNone Unknown Need HRR. PA, not m AOGCC database Monthly Meeting no data. Likely revegetated. Removed from our list of wells of concern in < 50', no c5g. no APF#. Odubut. 2012 Oumalik Foundation Test A US Navy I BLM None-uncased ht Nune lNone Unknown Need HRR, PA, nal in AOGCC database Monthiv Meetin no data. Likely revegetaled. Removed from our Ilst of wells of con cam in < 501, no csg, no APi#. October, 2012 Oumatik Foundation Test 0 US NavyI BLM None-uncased hc None None Unknown Need HRR. PA, not in AOGCC database Moral Meeting no data. Likely revegetaled. Removed from our list of wells of concern in < 50', no csg. no API#, October, 2012 Ournalik Foundation Test 4US Navy I BLM None4xwased h_j None None Unknown I Need HRR. PA, not in AOGCC database Month Meetin Page 12 of 14 0 Page 13 of 14 SPAR Response with Legacy Wells LrsLxisx Well Name BLM 2013 Risk Operator f RP I Land Mgr Priority Historic CSP Status Fife #IHazld Rslease7 AOGCC subsurface Status �__ - -_-�� . A013CC Surface Status no dala. Likely SPAR 1Norkgroup Nates revegelaled. Removed from our list of wells of concern in < 50'. no csg, no AP IN, October, 2012 Oumalik Foundation Test US Na!q BLM None -encased h None None Unknown Need HRR. PA. not w AOGCC database MonthlyMeetin no data. Likely revegelated. Removed from our list of wells of concern in < 501. no csg, no API#, October, 2012 Oumalik Foundalion rest U5 Na I BLM None -encased h None None Unknown Need HRR, PA, not in AOGCC database Monihl lAeeli no data. Likely revegetaled. Removed from aur fist of wells of concern in 0urn alik Foundation Test US Na 18 LM None -encased fi None None ilnknown Need HRR. PA, < 50', no csg. no API#, not in AOGCC database October, 2012 Month! Meetin no data. Likely revegetated. Removed from our list of wells of concern In < 50', no csg, no API#, October, 2012 Oumalik Foundat'Gon Test US Na I BLM None encased h Nome None Unknown Need HRR, PA, not m AOGCC database Month! Meeting property abandoned per then -applicable South Banow #7 US NEILM 2LI None None Unknown Need HRR. PA, ro erl lu ed re s no data to support proper Um -Qt 02 US N Noire Pendin Clo 335.30.001/3078 Yes, see file Plu d to surface abandonment no data to support proper Uncal #5 Ummt #9 Urrval A66 Umial #T Atiaaru Point#1 U5 US US Na I BL M US Na I BLM USGS/BLM None Pendin Hi h -PCB cleanu Active None Pendia None tPendi Mane Clo 3L5 313.00113079 335.38.00113093 Cao 335.3$.00113080 Clo 335 38 001I3091 None Yes, see file Yes, see file Yes, see file Yes. see lite No Plu ed E4 surface property plugged and abandoned pfupedy plugged and abandoned property plugged and abandoned Need HRR. PA,Plugged by properly plugged and BLM in 2009. abandoned abandonment suriaoe site rcmediated surface site remediated suriacx V le remediated surface site re medialed Page 13 of 14 SPAR Response with Legacy Wells LrsLxlsx Page 14 of 14 0 vrcTon`ce o BLM 2813 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator i RP 1 Land Mgr Priority CSP Status File #fFlaxid Releases SPAR Workgroup Notes Status Status Add to Site list. Need HRR, PA. SI with workplan and sampling. Chilling mud assessment. Surface Cleanup. Two large breaches on the south side of the berm allow water out of the reserve pit. Plugged properly plugged and surface site Drew Point #1 USGS 1 BLM None None None Yes by BLM in 2410. abandoned remedialed On Site list Need HRR, PA, 51 with workplan and sampling. [frilling mud assessment. Surface Cleanup. In 1976 the reserve pit berm failed and dolling muds/cutlings were released onlo the Poe of Teshekpuk Lake. Plugged by BLM in 2008. Solid waste from camp aril drilling operations buried on northern portion of pad. Erosion has exposed solid properly plugged and surface site East Teshek uk #1 US Navy 1 BLM None Active - waits 3Q0.38.11012652 Ycs, see file waste. abandoned remediated Threatened by erosion. properly plugged and surface site J. W. Dalton $P USGS f BLM None None None No Plu ed b BLM in 20fl5. abandoned rernediated properly plugged and surface site South Barrow #8 USAF 1 BLM None None None Unknown Need HRR, PA, abandoned remediated properly plugged and surface sile South Bartow 911 US Na INorih Slope Bono None None None Unknown Need HRR, PA, abandoned remedialed properly plugged and surface site South Barrow 013 US Na lNerlh Slope Boro None None None Unknown Need HHR, PA, abandoned remedialed properly plugged and surface site South Barrow #15 US Na !North Sloe Boro None None None Unknown Need HRR, PA, abandoned remediated properly plugged and surface site South Barrow #19 US Na 1Nrarlh Sloe Baro None Nana None Unknown Need HRR. PA, abandoned remediated Properly plugged and surface site South Barrow 1x20 US Na Worth Slope Bora None None None Unknown Need HRR, PA, abandoned remedialed Need HRR, PA, dolling mud assessment, containment assessment, possible releases. Breaches allow wafer to flow into and aul of property plugged and surface site Watakpa #2 USGSI BLM None None lNone lyes I reserve and flare pits. labandoned irernediated Page 14 of 14 0 0 -too OF I:414 E-vn-onTrr. Conservation F M °ALAKA Division of Spill Prevention and Response - GOVERNOR SEAN PARNELL Contaminated Sites Program 610 University Ave. ALAS Y" Fairbanks,Alaska 99709-3643 Main:907.451.2181 Fax:907.451.2155 July 11, 2013 Wayne Svejnoha Supervisory Minerals & Energy Specialist 222 W 7th Avenue, #13 Anchorage,Alaska 99513 DINED MAR 1 2 2014 Re: BLM Legacy Wells Dispute Dear Mr. Svejnoha: The Alaska Department of Environmental Conservation (ADEC) —Contaminated Sites has reviewed the National Petroleum Reserve in Alaska: 2013 Legacy Wells Summary Report dated February 2013, containing updated information on the status of the 136 Legacy Wells located in the National Petroleum Reserve— Alaska (NPR-A), and the draft National Petroleum Reserve in Alaska: 2013 Legacy Wells Strategic Plan dated May 2013. ADEC has also reviewed the response by the Alaska Oil and Gas Conservation Commission (AOGC). We concur with the response by AOGC and have no further comment regarding the priorities. We do have comments about the investigation and cleanup plans presented in the report. With this letter we are outlining regulatory requirements related to the environmental work that is proposed and required as part of these cleanups. ADEC is concerned that the 2013 Legacy Wells Strategic Plan prepared by the BLM does not include either assessment or the contingency for assessment of known,likely, or unknown but possible contaminant releases. In addition,BLM plans for surface cleanup of these wells should be made clear in the plan. At least one of these legacy wells has extensive PCB contamination and has resulted in a multi-year cleanup totaling tens of millions of dollars. At others, solid waste disposal practices have resulted in releases to the environment with estimated cleanup costs in the hundreds of millions. Known releases documented in the records we reviewed include crude oil,gasses,refined oil and fuel, drilling fluids that include various organics,metals, and other chemicals, and unknown contaminants from drums and other containers observed to be damaged and abandoned at the various well sites. There are 13 legacy well sites with known releases currently on the DEC contaminated sites list. Many of these are in the process of being addressed, cleaned up, and closed. From our limited records review there are 15 additional legacy well sites with confirmed releases. These should be prioritized for initial records reviews and then added to the BLM contaminated sites list under our cooperative agreement. Suspected releases include fuel releases from operations, storage, and fuel spills at the sites,impacts to various surface water bodies from spilled fluids during drilling and breaches of containment at reserve and flare pits,continued surface runoff from drilling fluids uncontained at several sites, and down-hole substances that were ejected from the holes over time or during blowouts or drilling operations. • Wayne Svejnoha 2 July 11, 2013 The BLM plan to address these known, suspected, and unknown releases at legacy well sites is notably absent from the documents presented to date. The three primary regulatory agencies that need to be involved in the plan are ADEC —Contaminated Sites,Alaska Oil& Gas Conservation Commission, and ADEC —EH/Solid Waste. Other agencies will need to be consulted as well. Below we provide recommendations for a coordinated plan using the Uniform Federal Policy for Quality Assurance Project Plans (UFP-QAPP) that will involve all of the regulatory agencies in one coordinated manner. This will allow BLM to address these sites in a consistent and coordinated project which fulfills all of the regulatory requirements so that the sites do not need to be re-visited in the future when they are closed after this project. Attached are our comments on each specific well. The acronyms used on the list include terms that are typically used in a CERCLA type investigation however they are also suitable for investigations conducted under the State of Alaska cleanup rules. These include the following; Historical Records Review (HRR) This is recommended for almost all of the well sites. Much of the information required for these reviews is already contained in various reports and appendices or in BLM files. The Historical Records Review should document the type of releases that might have occurred from drilling operations as well as historical use of the site, and should capture all available information on the drilling fluids used and any product produced or released. Preliminary Assessment (PA) This is recommended for almost all of the well sites. A Preliminary Assessment is a limited scope investigation that provides an assessment of information about a site and its surrounding area to distinguish between sites that pose little or no threat to human health or the environment and sites that require further investigation. The PA is a CERCLA defined document and typically does not require sampling. Site Inspection (SI) If the PA recommends further investigation, then an SI is necessary. The SI is a CERCLA defined document, and it is analogous to an initial report of contamination under state cleanup rules. On some legacy well drillings sites it is evident now that an SI is required just from a review of the reports. An SI investigation typically includes the collection of samples to determine what contaminants are present at the site and whether they are being released into the environment. An approved site specific workplan is required under both CERCLA and 18 AAC 75 prior to SI sampling. The SI typically is not intended to develop a full site characterization, but is limited to determining the presence or absence of a release. If contamination is found after completion of the HRR,PA, and SI then a RI/FS under CERCLA, or a Site Characterization Report and cleanup plan under 18 AAC 75 is required. DEC recommends that BLM incorporate into the strategic plan the processes outlined in this letter. A team • of agencies composed of AOGC,DEC-CS,EPA as required, and DEC-EH should address regulatory and technical requirements for these well closures. By cooperating and working together with the regulatory agencies BLM will save time and expense, and regulatory uncertainties will be avoided. The strategic plan should reference a project to prepare a generic workplan. DEC suggests that BLM utilize the generic UFP-QAPP workplan format for the required environmental work. If properly prepared,the workplan could encompass most of the investigations and cleanups required at these sites over multiple years. At other multi-site projects we have found this to be an effective way to reduce uncertainties and risk in these types of investigations. A very small site specific FSP could then be developed as BLM approaches each drilling site. Regulatory decisions made during workplan development would provide more certainty in the planning process for cleanups. Wayne Svejnoha 3 July 11, 2013 Please review the attached list of specific sites. if you have any questions, please do not hesitate to call me at 907-451-2181 or by email at fred.vreeman @alaska.gov. I look forward to working with you as the Federal Government fulfills its requirement to clean up these well drilling sites in Alaska. Sincerely, jeer Fred Vreeman Environmental Program Manager Enclosure: SPAR Response with Legacy Wells cc: Bud Cribley, State Director,Bureau of Land Management Steven Cohn, Deputy State Director for Resources, Bureau of Land Management Jolie Pollet, Branch Chief, Bureau of Land Management Robert Brumbaugh, Geologist, Bureau of Land Management Michael McCrum, Environmental Engineer,Bureau of Land Management Cathy Foerster, Commissioner, Alaska Oil and Gas Conservation Commission Larry Hartig, Commissioner,Alaska Department of Environmental Conservation Kristen Ryan, Director,ADEC Division of Spill Prevention and Response Steve Bainbridge, Program Manager,ADEC Contaminated Sites Program Jennifer Roberts,Program Manager,ADEC Contaminated Sites Program G:\SPAR\CS\Federal Facilities\Civilian Federal Agencies\DOI\BLM\Projects\Legacy Wells\7 11 13 Letter to BLM on Legacy Wells.docx • CC) m >.•w m m N a) N a m C 0 N w N = -0 N Um m CO CO m m CO CO a m CO CO m m m m CO m m U O y is m m m m m m m .N cm is is m is m ie is m ca o) cc) C a s a a a a a a n` Cl) a a a a s a a a a Cl) $ O 0 0 0 0 0 0 0 o a) a) 0 0 0 0 0 0 0 0 o a>i m Q fn C C c c c c c c a C C C C C C C C C 0 Z TN a) Cl) a) a) T L a) N a) a) a) a) a) a) O O L Cl) o 0 0 o D a m o 0 0 0 0 0 0 0 _ L c O L L L L a L O L L L L L L L 3 cC CO C C C C a 'm0 C C C C C C C C C .O (O C) N a= a= a= = a= =' a N O m N Cl) Cl) N a) O .N J N C CD CU N a) a) N a) N V N a O N N N N ca C CO N N Cl) N N N N N N E y -0 73 7 -0 L O 0 -0 -o -o a :0 7 'O .D E ..., ■ �O yy = 5 5 = U U O 5 0 3 7 5 > = 5 5 7 U N m m O = G= = Cl) o 0 = O V= = 4= co = = = O m O a UU' r - mo E c c c N c c 0) m 0) 0)m 0) 0) 0) 0)c N m rn O o o - - - - m O ._ ._ . - _ a - - •- a a) 0) < U) c c o -o o •o` 3 m ¢ o co) -o o o •o oc -`o a` -`o o a 0 a d C Cl), CO O o — 9 p a Z cm o cm ca cm - m m m C m m m C 12 ° 0 a a a O a a -o ca °) c m W If pp Iq', Z -o o -o a-° n-o a a n - a- a - n .- a3 - a - a C Y - Y c = = Q O Y U 3 N = Y O Y O Y O Y C Y O Y = Y O a. ° >a _ _ = = Y Y = G C N C 0C 0 O O _ = 0 0O 0 o u 0 = 033 = 3 0 0 . 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Abreak-down of the 136 is as follows: • 39 are uncased core holes that did not penetrate oil and gas zone, have naturally collapsed, and have blended harmlessly into the landscape. • 33 were either transferred to the North Slope Borough through the Barrow Gas Field Act of 1984 or were conveyed to Arctic Slope Regional Corporation. • 20 wells are being used to by the United States Geological Survey (USGS) for climatic temperature and permafrost studies (see Appendix B). • 7 wells are plugged (6 at Umiat, Square Lake #1). • 37 wells that require further evaluation. Following the 2003 field season, members of the legacy well team met to determine criteria for evaluating the risks associated with the above mentioned 37 wells and ranking each well based on these risks. For consistency purposes, the group devised a series of questions to assist in the process: • What is the condition of the existing pad and pits? (e.g. any indication of contamination?) • Is there any solid waste (old equipment, piping, barrels, etc.) or potential hazardous material conditions? • Did the hole penetrate known oil or gas stratigraphy? • Did the well have oil or gas shows, and if so, is the well capable of flowing? • Is the well near human activity, and if so are there conditions present that pose a risk to people? • What is the condition of the wellhead? Have there been any previous problems or repair work? Does the well (in its current condition) pose a risk? • What is the surficial condition of the existing pad and pits? Is contamination a possibility? • Does the presence of unplugged wells have the potential to negatively impact anticipated development? Each of the 37 wells are described in the following pages. Descriptions are ordered in terms of the ranked priority based on the above stated criteria and the concerns identified. Umiat Wells The early Navy wells in Umiat rank at the top of the list. Umiat is located on the north bank of the Colville River 60 miles upstream from the village of Nuiqsut. Natural oil seeps were discovered at Umiat by early explorers. This discovery, along with the detection of seeps at Cape Simpson, motivated the U.S. Navy to conduct a drilling program. Umiat and the Simpson Peninsula were the primary exploration targets in the mid to late 1940s. The Umiat seeps are still visible today. Their locations tend to shift over time. The seeps are currently active in Umiat Lake, just off the northeast portion of the airstrip and in a channel of the Colville River. 22 ~ ~ 1~ 1 • • The 11 Umiat wells were drilled from 1945 to 1952. These wells are a concern for BLM due to their close proximity to human activity. Umiat is not a village, but serves as a camp for seismic crews: Umiat is also the primary hub for recreational activities in eastern NPR-A and western CAMA (Central Arctic Management Area). It has one of the few airstrips on the North Slope maintained year-round and is a popular location for purchasing aircraft fuel (Figure 10). The Umiat wells all lie within 2 miles of the camp, with the exception of Umiat #l, which is approximately 5 miles to the northwest. After the U. S. Navy completed drilling operations in 1952, the U.S. Air Force assumed custodial responsibility at Umiat and established the 8,000-acre Umiat Air Force Station. In Tune of aircraft. 1955 the Air Force returned the facility to the U.S. Navy. Since Umiat is a Formerly Used Defense Site (FUDS), the U.S. Army Corp of Engineers (COE) is responsible for the reduction of risk associated with surficial hazardous, toxic, and radioactive waste. The COE has conducted extensive surface investigations in the area and has identified contaminants at several locations. Varying levels of barium, petroleum, pesticides, and polychlorinated biphenyl (PCB) were identified at the wellsites, the landfill, and the nearby slough (U.S. Arnry COE, 2003). Contamination levels were compared to the Alaska Department of Environmental cleanup standards and were used as a screening level. The COE has conducted site remediation at two well locations, Umiat #2 and #5 (Figure 11), and has plans to continue the surface clean up. To facilitate site remediation, the COE plugged wells #2 and #5 in 2002, but plugging the remainder of the wells is the responsibility of the BLM. Four wells were plugged by the BLM in the Winter/Spring of 2004. After .the removal of wellheads #2 and #5, the State of Alaska Historic Preservation Office asked the BLM to leave all existing surface objects (wellheads, tanks, pipes) onsite and intact, because of their potential Figure 11: Umiat #2 and #5 prior to removal and historic value. The Alaska Heritage remediation. Photo taken August 2001. Resources Survey (AHRS) included the Umiat wells in an inventory of all reported historic and prehistoric sites within the State of Alaska. This inventory of cultural resources includes objects, structures, buildings, sites, districts, and travel routes generally more than 50 years old. Therefore, the wellheads for the other Umiat wells will be left in place after plugging is completed. 23 • Umiat #9 Umiat #9 was spudded in June 1951 and completed seven months later in January 1952. "The well is cased to a depth of 1,257 feet. The purpose of the well was to determine the western extent of the producing field. It was also the first hole in which oil-based muds were used in the Umiat area. Umiat #9 is located about half mile to the north-northwest of the Seabee pad. The drill hole penetrated several known oil and gas formations; Ninuluk, Chandler, Grandstand and Topagoruk. Hydrocarbon shows were prevalent within both the Grandstand and the Topagoruk formations. Multiple sands were perforated and tested. Production exceeded 217 barrels per day, thus seemingly showing the benefit of using an oil-based mud. However, the muds did Figure 12: Aerial view of Umiat #9. not allow the different formations to be distinguished. Cement was used in an attempt to "plug back" and isolate individual formations. Samples were taken and sent to a Bureau of Mines lab where the chemical tracer (used during drilling) was measured and the various sandstone samples were examined. This allowed a study of the different lithologies be conducted. The tracer Aroclor used in the well has raised concerns about PCB contanunation. However, the well was allowed to flow for seven weeks at 200 baiYels per day (Robinson and Bergquist, 1956) prior to shutting it in, possibly purging the potential contaminants. As it stands today, insufficient energy exists in the reservoir for the well to flow to surface and the wellhead has no pressure on it. The well is located within the Northeast planning boundary (see Map 2) on lease AA- 081726. There is some potential for future development to occur in the area within the next 20 years and the well has the potential to leak to surface if development occurs and may adversely affect future development. Surficial wastes around Umiat #9 could present an issue. As Navy drilling, a gravel pad was not created. Wooden debris ex and there is a pile of drilling muds directly to the north whi (Figure 12). Samples taken by the COE from around the we levels of diesel range organics (DRO), residual range organics Army COE, 2003). was common with early fists around the wellhead ch is void of vegetation llhead detected elevated (RRO) and PCBs (U.S. 24 • The wellhead is equipped with two bull plugs, a flange and a 2 3/-inch nipple. There are no fresh water aquifers in the area, but due to potential contaminants downhole and existing contaminants on the surface, the well does pose a risk to human health and the environment in its current condition. Umiat #6 Umiat #6 was spudded August 1950 to test the southern limits of the Umiat anticline. The hole was drilled to a depth of 825 feet. The well was cased to 35 feet and a 42-foot cement plug was placed on the bottom of the well in order to stop water influx from sands at the base of the permafrost. The well encountered very poor shows in the Killik Tongue (Chandler Formation) and a productive sand in the upper Grandstand Formation. Oil recovered in open-hole pumping tests was produced at rates averaging 53 ban•els of oil per day. Insufficient energy exists in the reservoir for the well to flow to surface and there are no fresh water aquifers present. Major caving of the hole occurred and the well was backfilled with mud (Robinson and Bergquist, 1956). The well is located within the Northeast planning boundary (see Map 2) on lease AA- 081726. There is some potential for future development to occur in the area within the next 20 years and the well has the potential to leak to surface if development occurs and may adversely affect future development. The well lies about 500 feet to the northwest of a gravel spur road which connects the Colville River to the eastern edge of the Umiat airstrip. The well is located in wet tundra adjacent to an empty 55-gallon drum. The well is left open with 8 5/8-inch casing to the surface. It has no gauges, valves or a cover plate. Two thermistor protrude to the surface and rests on the lip of the casing. This well poses no threat to human health or the environment unless development occurs. Umiat #7 Umiat #7 was drilled in 1951 to a depth of 1,384 feet, cased to 1,196 feet t and completed as a dry hole. It was the southern most well drilled on the - ~--° :„, ~. Umiat anticline. The objective was to further delineate the southern extent of the producing Figure 13: Umiat #7 summer and winter photos. field. The well encountered residual hydrocarbons in the Chandler and Grandstand formations. Oil recovered in bailing tests was so minute that it was measured in gallons. The small amount of crude recovered in each test is indicative of residual oil staining. The sands encountered in Grandstand are downdip of the productive reservoir and are water bearing. Minor gas shows were encountered at 260 feet (Robinson and Bergquist, 1956). The well is located within the Northeast planning boundary (see Map 2) on lease AA- 081726. There is some potential for future development to occur in the area within the 25 • next 20 years but since the well is located below the oil/water contact it has less potential to be adversely affected or affect future development. The wellhead assembly consists of 7-inch casing (with collar) clamped inside 11 3/-inch casing at a total height of 30 inches (Figure 13). Surrounding the open hole is wet tundra with no indication of remaining debris or other surficial issues. The hole poses no tlueat to humans or the environment. The well location is currently situated on Alaska Dept. of Transportation land that was transferred in 1966, but the well remains the property of the BLM. Additional Umiat Work Umiat has been a site of recent cleanup projects. The cleanup process began in 1994 with the removal of about 1,000 drums, some containing petroleum and transformer oil with PCBs, from the main gravel pad. Another 200 cubic yards of PCB-contaminated soil was removed in 1998 along with 60 cubic yards of lead-contaminated soils. In 2001, 50 cubic yards of PCB soil was excavated with an additional 10 cubic yards removed the following year by the Corps of Engineers (U.S. COE, 2003). J.W. Dalton #1 J.W. Dalton #1 was drilled in 1979 to a depth of 9,367 feet. It is cased down to 8,898 feet and plugged back to 1,530 feet. (Husky Oil NPR Operations for U.S. Geological Survey-J.W. Dalton, 1982). The primary objective of the well was to determine if hydrocarbons were present within the Sadlerochit and Lisburne Groups. Gas shows were encountered in trace amounts in the Ivishak Formation, and the Lisburne and Endicott Group. Poor to good oil shows were discovered in the Ivishak Formation and in the Lisburne Group. A drillstem test of the Lisbiune Group recovered 22 barrels of oily water (Gyrc, 1988). This well has been a USGS monitor well since its completion in 1979. Approximately 230 barrels of diesel. fuel were placed downhole to act as a neutral medium for collecting wellbore temperatures. In the summer of 2004, warmer temperatures, wind, and wave action eroded 200 feet of the coastline adjacent to the well (Figures 14, 15). This erosion placed the J.W. Dalton #1 well and reserve pit precariously close 26 Figure 14: Photo of J.W. Dalton taken October 26, 2004. Soil cracking is occurring around the wellhead and the north and east side of the cellar is exposed. Figure 15: J.W. Dalton wellhead with pilings. Photo was taken August 2000. • to the edge of the Arctic Ocean. As a result, casing is now exposed to a depth of 15 feet on the present day beach (Figure 16). The top of the diesel is approximately 60 feet below the present beach level. The reserve pit has been breached on the northwest corner from the advancing shoreline (Figure 17). The pit is known to contain chromium, cobalt, zinc, and barium. However, chromium, cobalt and zinc were detected in background levels, due to the east-west water movement into and out of the pit. Barium is a constituent of the drilling muds and is consolidated with other sediments (U.S. Bureau of Land Management, U.S. Geological Survey, 1992). The well is located within the Northeast planning area (see Map 2), on a tract currently closed to leasing. This well is in danger of becoming engulfed by the ocean. The diesel fuel in the well and reserve pit contaminants raises concerns. The concerns can be eliminated by pumping out the In its current condition, the well does not pose a threat to humans or the environment, but if the casing were to break in its exposed condition, the diesel fuel would, over time, leak into the ocean. The release of heavy metals from the reserve pit may pose an immediate risk to human health and the environment. The pit was sampled October 26, 2004, and results are pending. 27 rigure 16: J.VV. Dalton with exposed conductor (left), and rat hole (right). The mouse hole (not pictured) is completely exposed. • ~ ~~, j ~ r~6 __ ~ ~' `} J 3 ~~`~?_ ~, !^ - t i ~" `. ~; ~ y, f a `~`~'" ~.' i" '~ ~ } ~~{ ~ J t I ~ ~ a t ~~5 -.{ y. ~'~ i ~ Z i ~1 ~~ ~ ~~ ~~x .~ ~ ~ ~~ ~ ~ I ~~. ~,.~ ~~ ;Sirnpsnn;R?$ ' Mingea` p q~ East Simpsm ~L ~ ~ . 't 61Pn ,' r `,.~ `~~ma ~ ~``# ~impsbnlr28o~Sbrgs;~n#2 Slmpson~29e~ i. . SimpSOn p30 $ 3DA EaS1 `~s _ = - ~ _ ~ . ~ ~ '~'` ~~Swth Sinquon ~~ v ~ °~ icon pfd & f4A .on u31 5un~son #t MaF Figure 18: Simpson Peninsula showing well locations. Simpson Core Test #26 Simpson Core Test #26 was drilled in the middle of one of the larger, active oil seeps in NPR-A (Figure 19). The Navy described this location as Seep 3. The hole reached a total depth of 1,171 feet and was cased to 350 feet. The well encountered one very poor gas show and one productive oil sand in the Ninuluk/Seabee undifferentiated formation. In production tests, the well flowed at rates averaging 110 barrels of oil per day (Robinson and Brewer, 1964). Other formations encountered include the Gubik, Seabee, and Grandstand Formations. Gas bubbles have been observed around the base of the casing since the 2000 field season. Bob Burruss of the USGS, sampled and analyzed gas from Simpson Core #27 which is part of the same oil field, located less than half mile to the east. His findings showed the gas to be biogenic methane indicating that microbial alteration (breakdowns) of the hydrocarbons has generated the gas. Additionally, oil sampled in the well was extremely biodegraded. Simpson Figure 19: The wellhead is located in the center of Core #26 has a wellhead flanged to the the photo. The green color liquid defines the area of active seepage. The orange color is oil-eating casing, a 2-inch line pipe, and four bacteria. wing valves and will likely flow oil if 28 the valves are opened. Access to the wellhead is limited by the depth of oily-water surrounding its base (Figure 20). There are no concerns with contaminating fresh water aquifers if the well is left unplugged, but the well could potentially flow oil and cause damage to surface resources if the well equipment corrodes or, through human intervention, the well is opened or damaged. The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased, receiving a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since any development will likely target deeper, more productive formations. The area around the wellhead looks to have been bulldozed in an attempt to collect the seeping rlgure 2U: Simpson Core #26 drilled in the middle of an oil. The scraped-up earth was oil seep. Depth of the oily-water prohibits access to the then used to build berms around wellhead. the depression. Light amounts of trash appear to have been buried in these berms. The Navy cleaned up the site in the late 70s, removing most of the drums and other debris, but solid wastes, including half barrels and other drums can be found in the wet tar that fills the depression. Simpson Core Test #31 29 psi. The well also penetrated the Gubik and Seabee Formations, which were unproductive (Robinson and Brewer, 1964). The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased and received a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since any development will likely target deeper, more productive formations. A drilling pad does not exist as the well was drilled in an active oil seep, which remains active today (Figure 21). The Simpson Peninsula contains few permanent settlements, but a multitude of summer camps. The well had been a source of fuel for the inhabitants as evidenced by a 10-foot extension pipe hooked up to the wing valve. The extension allowed for the oil to flow down the pipe and collect in a bucket. In 2000, BLM learned that oil was seeping out of a corroded swedge on the wellhead. The potential harm was mitigated by the fact oil was seeping into a natural oil seep. In June 2001, BLM spent $35,000 to remove the old wellhead and install a new master valve and needle valve. Oil and gas samples were taken by the USGS prior to the replacement. There are no fresh water aquifers in the well so there are no risks to sub-surface resources but there are risks to surface resources if the well is left unplugged. Oil will flow to surface if the wellhead or casing corrodes or if the well is left open. There are no solid wastes or hazardous materials (besides the natural oil) that would present a concern or pose a risk to the health and safety of the land and people. Simpson Core Test #30A Simpson Core Test #30A is an oil well drilled in 1951 to a depth of 693 feet and cased to 152 feet. The well encountered some very poor gas shows and one productive sand in the Ninuluk/Seabee undifferentiated formation. The well was bailed and averaged oil rates of 6 barrels per day during bailing tests (Robinson and Brewer, 1964). The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased and received a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since any development will likely target deeper, more productive formations: The wellhead consists of casing swedge, a nipple, and a brass gate valve and will flow oil to surface if the valve is opened. There are no sub-surface fresh water aquifers at risk. However, if the well is left unplugged it could pose a risk to surface resources. In its current state, oil could flow to surface if the well is damaged, corroded, or the valves are opened. Additionally, concerns have been raised regarding the bubbling around the base of the casing. When the valve is opened, the bubbling subsides. This indicates a small leak around the base of the casing or through a hole in the casing. The gas was sampled by the USGS and has been identified as reservoir-produced biogenic gas. While the well does pose a risk, it is mitigated by the fact that the well is drilled in an active, natural oil seep. 30 • Simpson. Core Test #30 Simpson Core Tests #30 and #30A were drilled about 100 feet apart in the same oil seep. The seep is part of the same regime that contains Cores #26 and #27. These wells were drilled to gain an understanding of the producing field limits and to help determine underlying structure. Simpson Core #30 is an oil well drilled in 1951 to a depth of 1,500 feet. No plugs were set and the well was cased to 102 ft. The hole encountered the same formations as Cores #26 and #27; Gubik, Seabee, undifferentiated Ninuluk/Seabee, and the Grandstand with a few poor gas shows and one productive sand in the Ninuluk/Seabee undifferentiated formation. Poor oil shows were also noted in the deeper Grandstand Formation. During production tests of the shallow oil sand the well was bailed at rates averaging 5 barrels of oil per day (Robinson and Brewer, 1964). The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased and received a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since any development will likely target deeper, more productive formations. The well was left with sheared, open casing above ground. Even though the well produced oil 50 years ago, it is static today. This suggests the hole has collapsed below the shallow casing. There are no fresh water aquifers in the well, however, since the well was drilled to a reservoir with sufficient energy to flow oil to surface, the well should probably be considered a risk if left unplugged. This well would probably be plugged by placing a 100 foot surface plug downhole to eliminate risks to surface resources. The potential risk is alleviated by the fact that the well is drilled in an active, natural oil seep. There is no drill pad as the Navy drilled within the seep and camped on the tundra. Some light trash is present in the seep between the Core #30 and Core #30A, which may prove difficult to clean (Figure 22). The well lies three tenths of a mile from both Core #26 and #27 (Figure 18). Simpson Core Test #27 Simpson Core Test #27 is an oil well that was spudded February 1951 and completed one month later. Total depth of the well is 1,500 feet, with casing down to 102 feet. Oil was encountered at a depth of 380 feet and was bailed at a rate of 3 barrels per day. The core test encountered the same formations as Simpson Core Test #26, with a few very poor gas shows and one productive oil bearing sand in the Ninuluk/Seabee undifferentiated formation. Oil-based muds were used from the drilling depth of 325 to 661 feet. At that point the oil was displaced and the drilling crew resumed using water based muds. 31 Nigure 22: Light trash is present in the seep between Cores #30 and #30A. Additional crude was added downhole at a depth of 1,320 feet. The drill pipe was stuck and the two front derrick legs collapsed below the four-foot extension in an effort to free the pipe. The drilling muds in place were re-circulated during the repair process. In an attempt to free the pipe, 73 baiTels of crude and 23 barrels of diesel were used to replace the muds and the pipe was worked free. The oil was gradually replaced by mud as the drilling continued, however, some oil remained in the hole after completion. The crude used downhole came from Simpson Core Test #26 (Robinson and Brewer, 1964). There are no fresh water aquifers in the well so there are no risks to sub-surface resources but there are risks to surface resources if the well is left unplugged. Oil could flow to surface if the well equipment corrodes, the well is damaged, or left open. This potential risk is mitigated by the fact that the well is drilled in an inactive, natural oil seep. The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased and received a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since any development will likely target deeper, more productive formations. There is no existing pad. The wellhead consists of 8 5/$-inch casing, a flange and a brass gate valve. The casing was set in a small inactive oil seep. It will flow oil to surface if opened. There is no surface debris present at Core #27 (Figure 23). The well poses little threat to human health and the immediate environment around it in its current condition. Simpson Core Test #29 Simpson Core Test #29 is a dry hole drilled in 1950 to a depth of 700 feet and cased to 152 feet. The purpose of the well was to determine the limits of the producing field encountered at Core #26. A very poor oil show was identified in the Seabee Formation. The productive sand present in the other Simpson Cores does not exist in this well. The test hole also penetrated the Gubik and Grandstand Formations. No oil was recovered from this well (Robinson and Brewer, 1964). The well is grouped higher on the priority list due to its close approximation to Simpson Cores #26, #27, #30 and #30A (Figure 18). The well is located within the Northwest planning boundary (see Map 2). The tract was recently leased and received a high bid of $7.51 per acre during the NW NPR-A lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development if left unplugged since any development will likely target deeper, more productive formations. The well was left with 8 '/2-inch casing, open to the atmosphere at a height of 6 inches. Thermistor cables protrude from the casing. It is located in a four-by-four foot wooden 32 Figure 23: There is no surface debris present at Simpson Core #27. cellar filled with water. A drilling pad was never established. There is some light trash around the wellhead including drill pipe, and various sized wooden scraps. A small barrel pump and other small debris can be seen in the casing and within the cellar (Figure 24). This well poses no threat to the human population or the environment. Umiat #1 u Umiat #1 was spud in 1945, and completed in 1946. Total depth reached was 6,005 feet and the well was cased to 685 feet. The well encountered residual hydrocarbons and a few poor gas shows in the Seabee, Ninuluk, Chandler, Grandstand, and Topagoruk Formations. The sands of the Grandstand were outside the productive area encountered by other Umiat wells, which are located five miles to the east. Oil recovered in bailing tests was so minute that it was measured in pints and officially recorded as a trace. Lab tests determined the oil to be of a different type of crude oil than that found in the productive Umiat wells (Robinson and Bergquist, 1956). The small amount of crude recovered in each test is indicative of residual oil staining. No fresh water aquifers exist in the Umiat area, so this well poses no tlueat to sub-surface water resources. There is no pressure on the wellhead and it is fitted with a blind plate, a 2-inch nipple and a brass gate valve (Figure 25). The well is located on an unleased tract at the crest of a hill that divides the north and south forks of Seabee Creek. Future development is unlikely because of its location outside the Umiat structure. Left unplugged, the well poses no threat to the environment and has no potential to adversely affect future development. The surficial landscape is dominated by willows with the exception of three piles of drilling muds that are located to the east and north of the wellhead. Vegetation is absent on the slick, clay- type material. The COE tested the piles and found them to be contaminated with barium, Figure 25: Umiat #1 is located about 5 which is not surprising given that barite is a miles from the Umiat airstrip. common drilling fluid component. Through sampling, the COE determined the barium has not migrated down the hill and poses no danger to the Seabee Creek drainage (Ecology and Environment, 1999). There is no 33 r tgure 24: Simpson Core #29 indication of stressed vegetation down-gradient from the drill muds. Additionally, solid waste in the form of steel framing and scrap metal are near the wellhead. The solid wastes pose no threat but are unsightly. Umiat #11 Umiat #11 was spud June 1952 and completed two months later. The well reached a total depth of 3,303 feet with 486 feet cased. One cement plug was placed at 440 feet. The objective was to test production possibilities of the Grandstand Formation on a fault that parallels the Umiat anticline. The well encountered residual hydrocarbons in the Seabee, Ninuluk, and Grandstand Formations but no oil or gas was recovered during production tests. The sands of the Grandstand were outside the productive area encountered by other Umiat wells, which are over one mile to the south. The well is located within the Northeast planning boundary (see Map 2). The tract is located on lease AA-084141 but there is little possibility of the well interfering with future development due to its location outside the Umiat structure. The well was drilled in the alluvial plain of Bearpaw Creek, 0.6 miles from Umiat #8. A drilling pad was never created as operations consisted of mounting the drill rig on a sled and then placing it on top of large timbers that were secured to pilings (Robinson and Bergquist, 1956). A pile of unvegetated drilling muds is present 30 feet west of the wellhead in between the wellhead and the creek. The wellhead consists of a 10 3/-inch open-ended casing with a collar sticking up inside a 30-inch conductor that is filled with water. Minor wood debris can be found around the wellhead. The well poses no risk if left unplugged. Wolf Creek Area Three test wells were drilled in the Wolf Creek area. The wells were drilled in the early 1950s with the intent of testing the northwest-trending Wolf Creek anticline structure. Wolf Creek # 1 and #3 (Figure 26) are located at the crest of a hill with about 250 feet of relief from the valley. Wolf Creek #2 is located about one and one- third miles north within the Wolf Creek valley. Wolf Creek #2 and #3 are open holes but Wolf Creek #1 is equipped with a wellhead. Wolf Creek #1 Wolf Creek #1 is a gas well drilled in 1951 to 1,500 feet and cased to 48 feet. The well encountered very poor gas shows in the Killik Tongue and productive sands in the Grandstand Formation. The well produced at rates up to 881 MCFPD in open hole tests 34 Figure 26: Wolf Creek #1 after adding a new ball valve to the wellhead. August 2004. of the Grandstand. The well is equipped with a blind plate, a 2-inch nipple and a brass gate valve (Figure 26). There is a small gas leak in the threaded wellhead flange and, if the valve is opened, the well will flow about 10 MCFPD but the pressure is so low it does not register on a gauge. In its current condition, the well does not appear to pose a risk to surface or sub- surface resources. The drill pad is shared with Wolf Creek #3. Tluoughout the pad, there are some wooden pilings, metal anchors and scrap metal. The scraps should not be considered hazardous in this remote region. The leaking gas is of minor concern, however given the weak gas pressure and remote location; the overall risk is very minimal. Wolf Creek #2 Wolf Creek #2 is a diy hole. The well was drilled in 1951 to 1,618 feet and cased to 53 feet. It is located roughly 1 '/ miles north of the other Wolf Creek test wells. The purpose of drilling was to determine if the gas-bearing sandstone beds previously encountered in Wolf Creek # 1 would contain any oil. The records indicate a very poor gas show was encountered in the Killik Tongue but no oil or gas was recovered in production tests (Collins and Bergquist, 1959). The hole also penetrated the Seabee, Ninuluk, Chandler, and Grandstand Formations. The well is located on an unleased tract within the Northwest planning area (see Map 2). No offers were received in the June 2004 lease sale for the tract and near-term development is unlikely. The wellhead consists of a plate welded onto the 11 3/-inch casing cut off at ground level (Figure 27). There is no existing drill pad. Solid wastes consist of a few empty 55-gallon drums upstream along the upper floodplain of the creek. The well poses no threat to surface or sub-surface resources and has no potential to adversely affect future development. Wolf Creek #3 Wolf Creek #3 is a gas well. The well was drilled in 1952 to a depth of 3,760 feet and cased to 625 feet. It is deeper than the other two Wolf Creek wells because its primacy purpose was to test the Grandstand Formation (the producing formation around Umiat, 35 miles to the west). The Grandstand Formation produced from four different sands. In 35 rigure l7: Woit Creek #2 had casing cut off at ground level. open hole flow tests of the well produced at rates up to 445 MCFPD. The gas appeared to be sufficient to supply a small camp, but not of commercial proportions (Collins and Bergquist, 1959). Two plugs were set in the well above the Grandstand Formation. The top of the shallowest plug is inside the casing at 554 feet. In addition to the Grandstand, the hole penetrated the Ninuluk, Chandler, and Topagoruk Formations. Upon abandonment, the hole was filled with oil-based drilling muds and left open to the environment. A total of 103 barrels of crude were used. The well is located on an unleased tract within the Northwest planning area (see Map 2). No offers were received in the June 2004 lease sale for the tract and near-term development is unlikely. The well poses no tlu•eat to surface or sub-surface resources and has no potential to adversely affect future development. The drill pad is shared with Wolf Creek #l. There is some minor debris at the site as noted in the Wolf Creek #1 description. The wellhead was cut off six inches from the ground surface. This allows seasonal precipitation to accrue in the hole and spill over the sides, but the well poses no threat to surface or sub-surface resources and has no potential to adversely affect future development. Fish Creek #1 Fish Creek #1 was drilled by the Navy in 1949 near an oil seep. Total depth of the well was 7,020 feet. The well was plugged back to approximately 2,550 feet, drilled to a new total depth of 3,018 feet and cased to 3,01'7 feet. The well was drilled to test a large gravity anomaly that suggested the possible presence of petroleum-bearing rocks and some structural anomaly that might be a trap for oil. Very poor oil shows were identified in the Topagoruk Formation at depths from 5,550 - 6,000 feet and a productive sand was reported at 3,000 feet. The well is not a flowing well but was pump-tested at rates averaging 12 barrels of oil per day through agravel-packed completion. It also produced a small amount of methane gas. The hole encountered the Gubik, Shrader Bluff, Tuluvak, and Seabee Formations. 36 producing by 2008. Given the low level of risk, the plugging of this well should be postponed until infi-astiucture is established. Surficially, there are still some solid wastes present. The drilling pad and cellar construction consists of concrete reinforced with steel matting. The concrete, matting, and pilings are still in place today, albeit heaved by permafrost (Figure 28). Several 55- gallon trash drums filled with debris are located off the concrete pad. Other light debris is also present within 500 feet of the pad. The oil seep is located about 1.5 miles to the southwest of the well site and is inactive. The USGS 305-I reports the dimension of the seep as being 6' x 20' (Florence and Brewer, 1964), however, BLM personnel located the seep in 2001 and noted its dimension to be 3' x 6'. Simpson Core Test #28 Simpson Core Test #28 was drilled in September 1950 to a total depth of 2,505 feet and cased to 110 feet. Despite the depth, the hole did not encounter any hydrocarbon shows. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper, more productive formations. A drill pad does not exist, however a large area of disturbance is visible. The wellhead consists of open casing inside a wooden cellar. There is considerable solid waste near the well. These include: numerous metal pilings, drill pipe, large wood fragments (spool, plywood, timbers), and some partially crushed drums. The solid wastes are unsightly, but pose no threat to humans or the environment. Simpson Core Test #13 Simpson Core Test #13 was drilled in the summer of 1949. It was a relatively shallow test and did not generate any significant oil or gas shows. The well encountered residual hydrocarbons in the Seabee and Grandstand Formations at depths of 1,079 - 1,084 and 1,138 - 1,148 feet (Robinson and Brewer, 1964). No oil or gas was recovered during production tests. The well is over three miles north of the Simpson Core wells that penetrated productive Grandstand sands. Total depth of the well reached 1,438 feet. The top 26 feet are cased and the hole was filled with water-based drilling mud. Fresh water aquifers were not encountered. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper, more productive formations. 37 • A drilling pad does not exist. Seven-inch casing was cut off at ground level and is very difficult to locate. The well is open to the atmosphere. There is no solid waste, nor is there anything hazardous regarding this location. It should not be considered a risk to surface or sub-surface resources. Simpson Core Test #15 Simpson Core Test #15 was drilled in August 1949 near an active oil seep. The well was drilled to a total depth of 900 feet and cased to 18 feet. The well encountered only residual hydrocarbons in the Ninuluk/Seabee and Grandstand Formations (Robinson and Brewer, 1964). No oil or gas was recovered during well tests. Additionally, fresh water aquifers were not encountered. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper, more productive formations. There is no existing pad. The well was drilled about '/s of a mile north of a natural seep. The well consists of open ended casing with a height of 18 inches (Figure 29). The area is clean with no solid waste. This well poses no risks to the environment or human activities. Simpson Core Test #14 Simpson Core Test #14 was drilled in 1949 to a depth of 290 feet. The records do not clearly state how much casing was run but the well was left with casing above ground open to the atmosphere. Its present day location lies within 1000 feet to the west of an active oil seep. The well was not drilled deep enough to encounter the hydrocarbon stained sands evident in the Simpson Core #14A well. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development in the area is a distinct possibility within the next 20 years. This shallow well did not penetrate any hydrocarbon bearing zones and poses no risk to surface or sub- surface resources, nor does it have the potential to adversely impact future development. 38 ! • Simpson Core Test #14A Simpson Core #14A was drilled in 1949 to a depth of 1,270 feet and casing was set to a depth of 32 feet. The well encountered only residual hydrocarbons in the Ninuluk/Seabee and Grandstand Foiniations. No oil or gas was recovered during tests (Robinson and Brewer, 1964) and fresh water aquifers are not present. Present day location of the well is approximately 1000 feet to the west of an active oil seep. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper, more productive formations. East Simpson #2 East Simpson #2 was drilled in 1977 to 7,505 feet and cased to 6,427 feet. Five cement plugs were set, with the top of the shallowest plug set at 1,997 feet. The primary objective of the well was to test the Ivishak Sandstone where it onlaps the Pre-Devonian age basement rock (Husky Oil NPR Operations for U.S. Geological Survey, 1982). Small scale faulting was found between the wells in the area, possibly accounting for the thin section representing the Sadlerochit Formation. The well encountered very poor oil shows at 6,000 feet in the Torok Formation and Endicott age sandstones were cored with poor porosity and dead oil shows. The well is officially listed as a dry hole. Upon completion of the production tests, the well was plugged back to 1,997 feet and filled with approximately 280 barrels of diesel to facilitate permafrost temperature measurements. However with East Simpson #1 less than five miles away, the USGS has no plans to use this well for temperature monitoring. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $21.51 per acre during the lease sale of 2004. Exploration and development is a distinct possibility within the next 20 years but it is unlikely this 39 well will have an adverse impact on development. If this exploration and development establishes infrastructure nearby, it would greatly facilitate plugging this well and significantly reduce costs. The wellhead consists of a casing head, side gate valve, a master gate valve, and a needle valve. The drilling pad is of the thin pad variety and is slowly being reclaimed by natural processes. Exposed pilings stick up a height of two feet from the surface, but no other objects needing removal are present (Figure 31). The cellar is a wooden 12' x 12' with standing water. With the existing plugs and the static condition of the well, there is no risk to surface or sub-surface resources. Kaolak #1 Kaolak #1 lies in the northwest portion of NPR-A and is considered one of the more remote well sites within the reserve. Kaolak #1 was drilled in 1951 to a depth of 6,952 feet and casing was set to 1,000 feet. Drilling served two purposes, to determine the presence of any reservoir ch-°--`--~-`-- --' ~_ ~_~_____~__ ,r •, , present in this remote portion of the reserve. The site was chosen based on a seismograph survey in 1950 that identified an anticline at this location. The intent was to drill to a depth of 8,000 feet, but a windstorm destroyed the derrick. After the storm, the hole was abandoned due to unsatisfactory oil and gas shows. Findings indicated some very poor oil and gas shows in the Chandler Formation and very poor Figure 32: Kaolak #1 with cabin on the drill pad. shows in the Topagoruk Formation. Gas shows were attributed to association with the coal beds (Collins and Bergquist, 1958). Upon abandonment, no plugs were set and the hole was filled with heavy muds. The well is located on an unleased tract, in Southern NPR-A (see Map 2) where a lease sale is scheduled for 2008. Exploration and development in the area is a possibility within 40 Figure 31: East Simpson #2 is partially submerged during the spring thaw. Photo taken June 2003. the next 20 years, but since this well did not penetrate productive oil and gas zones it will not have an adverse impact. There are no major surface issues. The working area is still visible due to a multitude of wooden pilings around the wellhead and a cabin on the north end of the pad (Figure 32). Off the pad, the area is clean. The wellhead is missing its upper components. All that remains is the top flange above the base plate and the casing spool, leaving 11 3/ -inch casing open to the enviromnent. The well is left with a casing head and is open to atmosphere. The wellsite is 45 miles southwest Wainwright, which is the nearest community. There are no hazardous materials or anything that would pose a risk to the general health and safety of the land. The cabin may be a concern, but dealing with the situation is outside the scope of this report. Meade #1 Meade #1 is a gas well drilled to a depth of 5,305 feet in 1950. The well was cased to 2,785 feet and two cement plugs were set, with the top of the shallowest plug tagged at 2,783 feet inside the casing. The well encountered some gas shows in one productive sand within the Grandstand Formation. The gas tested at rates up to 1.1 MMCFPD during openhole flow tests of the sand at 2,949 - 2,969 feet. The well is estimated to have gas reserves of 10 BCF. Gas pockets are relatively common in this portion of NPR-A due in large part to the underlying coal. At one point while conducting tests, some problems were encountered while attempting to pull a testing tool out of the hole; aball-peen hammer was inadvertently dropped downhole, causing the tubing to stick. The tubing could not be freed and as a result, it twisted off leaving tubing in the hole. When the lost tubing could not be pulled out, heavy muds were pumped downhole and the well was abandoned (Collins and Bergquist, 1958). The well is located within the Northwest planning area (see Map 2). The well is adjacent to a recently leased tract that received a high bid of $10.26 per acre during the 2004 lease sale. Exploration and development is a distinct possibility within the next 20 years and has the potential to target the Grandstand Formation. If left unplugged the well has no potential to adversely .affect future development. There is no pad present at Meade #1 Several pilings and light trash are present, but at ground level and consists of an open flange bolted to the top of the casing (Figure 33). This differs from the Navy reports that indicate the wellhead was abandoned in place. There is no record as to why it was removed. A BLM field crew bailed the hole and discovered a swedge and 2-inch needle valve junked downhole. This site is very remote (30 miles south of Atgasuk) and since the gas zones are currently isolated below the cement plugs there is a limited risk of adverse impacts to surface or sub-surface resources. 41 Figure 33: Meade #1 wellhead. • Titaluk #1 Titaluk #1 was drilled in 1951 to a depth of 4,020 feet and is a dry hole. The well was drilled on the end of an anticline to test the oil and gas potential of foienations within the Nanushuk Group. A few very poor oil and gas shows were encountered in the Grandstand and Topagoruk Formations, but no oil or gas was recovered during multiple production tests. The Ninuluk and Chandler Formations were also encountered, but with no shows. One cement plug was set at 3,471 feet. The placement of this plug is curious since the shows (albeit poor) were reportedly discovered above this level (Robinson and Bergquist, 1959). The well remains in a static condition. Titaluk #1 is located within the Northwest planning area (see Map 2) on an unleased tract. No offers were received in the June 20041ease sale. Near-term development is unlikely. Surficially, there are no concerns with this well. The well is open, 10 3/ - inch casing above ground to a height of 3 feet. It is open to the atmosphere. The area of disturbance is completely revegetated Figure 34: Titaluk #1 wellhead with wooden cellar. with no solid waste concerns. The wooden cellar is in a state of disrepair and filled with water (Figure 34). The site is clean with very little debris. There are no hazardous conditions associated with the surface. The nearest settlement is Umiat, 60 miles to the east. The well poses no risks to human safety or the environment. Skull Cliff Core Test #1 Skull Cliff Core Test #1 was drilled in 1947 to a depth of 779 feet and is a dry hole. No shows of oil or gas were reported while drilling through the Gubik, Grandstand, and Topagoruk Formations. While drilling to the target depth of 1,500 feet, the drillstring was lost in the hole and fishing attempts were unsuccessful in recovering the lost drillstring. The drilling mud was bailed down to the top of the fish and the remainder of the well was filled with diesel to 54 feet to prevent the wellbore from freezing and facilitate downhole temperature measurements. It is plausible that the casing could corrode and the diesel fuel could seep into the sub-surface strata, but since there are no fresh water zones in the well it is not considered a risk that would adversely impact sub-surface resources (Collins and Brewer, 1961). The well is located within the Northeast planning area (see Map 2). The well lies adjacent to a recently leased tract that received a high bid of $10.77 per acre during the 20041ease sale. Exploration and development is a distinct possibility within the next 20 years but it 42 • is unlikely this well will have an adverse impact on development since industry will likely target deeper, productive formations. An oil seep located at the base of Skull Cliff (land/ocean contact) was observed and documented in the 1940s, which influenced the Navy's decision to drill. BLM and USGS crews searched for the seep when they were in the area but nothing was found at the cliff/beach contact. However, another seep was reported in 1996 by a group from the Academy of Natural Sciences in a small gully about a mile to the east near the old radio tower site. This seep was never confirmed by BLM. Surficially, a drill pad was never established, but a large area of activity is defined by roughly 200 drums, metal tracks, wood debris and various other scraps that litter the site (Figure 35). Presently, the well consists of open casing with a wooden plug shoved into it. There does not appear to be any stressed vegetation that might indicate a hazardous situation. Since the well did not encounter oil and gas Figure 35: Solid waste primarily in the form of empty formations and has no pressure at drums titter the area around Skull Cliff Core Test. The the surface, it is not considered a Wellhead is in the upper left portion of the photo. risk to surface resources. The only potential risk is that this site lies near a popular winter route between Barrow and Wainwright and it is possible for a snowmachine to impact the solid waste. Barrow is approximately 30 miles to the northeast and Wainwright is about 60 miles to the west. Oumalik #1 Oumalik #1 was drilled in 1950 and is a dry hole. The well was drilled to a total depth of 11,872 feet and cased to 2,762 feet. It is the deepest well drilled by the early U.S. Navy program. The well location was positioned on the apex of the Oumalik Anticline and drilled with the intent of revealing the oil, gas, and water content of the penetrated stratigraphy. Two cement plugs were set, the shallowest of which is inside the casing at 2,543 feet. Very poor oil and gas shows were reported in the Grandstand Formation, and poor gas shows were noted in both the Topagoiuk and Oumalik Formations. Small undetermined volumes of gas were recovered during multiple production tests. It is believed that the gas encountered was large enough to furnish fuel to a camp but not large enough to become a commercial producer. The gas encountered during drilling showed high gas pressure, but the sandstones in which they were observed are thin with low porosity (Robinson and Bergquist, 1956). The gas zones are currently isolated by the cement plugs and pose no risk to sub-surface resources. The wellhead and a fabricated plate are below ground level. Two 2 '/z-inch nipples open to the atmosphere are above ground to allow thernistor cables to be run into the well. The well is located within the Northwest planning area (see Map 2) on unleased tract that received no bids during the lease sale of 2004. Near-term development is unlikely. If left 43 • unplugged, the well has no potential to adversely affect future development. The existing pad contains piping from a ground refrigeration system similar to Topagoruk #1. The ground in this area is somewhat swampy with high susceptibility to permafrost melt. Circulating cooled diesel fuel in the pipes enabled drilling to occur without thawing the ground. The steel pilings were pulled from the ground to be reused at another site (Robinson and Bergquist, 1956). However, steel pipe filled with diesel fuel remains. A 6- inch circumference of stressed vegetation was noted around several of the low-cut pipes. Despite the diesel, the well does not pose a risk to any existing communities or habitation. It is in a remote location approximately 55 miles southeast of Atgasuk. Overall, the well poses no risk to people or the environment. East Oumalik #1 East Oumalik #1 was drilled on a ridge that overlooks an unnamed tributary of the Oumalik River. Topographic relief is approximately 100 feet. The drill site is highly remote as the nearest village (Atgasuk) is 65 miles away. The well was drilled in 1951 and reached a total depth of 6,035 feet and is cased to 1,100 feet. It is a dry hole. Very poor oil and gas shows were reported in the Grandstand Formation and very poor gas shows were reported in Topagoruk Formation. The well is located within the Northwest planning area (see Map 2) on an unleased tract that received no bids during the lease sale of 2004. It is unlikely that exploration and development will occur in the vicinity of this well in the near future. If left unplugged, the well has no potential to adversely affect future development. The well was left with open casing below ground level and has thermistor cables protruding from inside the casing. The casing is marked by a 7-foot, %-inch pipe. The open pipe lies within awater-filled cellar. The standing water has produced numerous algae and other aquatic vegetation obscuring the wellbore. Surficial hazards consist of several 10-foot timbers and a few 4-foot pipes (probably rig anchors) sticking up out of the ground. The site is mostly overgrown with shrubs and appears to be relatively clean. The airstrip, incoming, and outgoing trail scars are obvious and can be used to navigate to the wellsite. There are no risks associated with the well in its current condition and was given this ranking due to its close proximity to Oumalik #l. Topagoruk #1 Topagoruk #1 was drilled in 1951 to a depth of 7,154 feet and is a dry hole. The intent was to test a small, buried anticline and the various formations associated with it. The well was cased to 6,073 feet, plugged back to 6,175 feet and then drilled to a new total depth of 10,503 feet. Prior to re-drilling to total depth, approximately 250 barrels of crude oil fiom Cape Simpson were added downhole to help offset lost circulation and caving. Additionally, 20 barrels of diesel were added downhole during the drilling phase. No plugs exist in this well. The well is left with open casing to the surface and thermistor cables protruding from the casing (Figure 36). The well encountered the following stratigraphic units while drilling; Gubik, Grandstand, Topagoruk, and Oumalik Formations, Middle and Upper Jurassic rocks, Shublik Formation (Triassic age), Permian rocks, and Lower-Middle Devonian rocks. Hydrocarbon shows were limited to a few very poor gas shows in the Oumalik Formation. No oil or gas was recovered during 44 multiple production tests (Collins and Bergquist, 1958). The well penetrated no fresh water aquifers and does not represent a threat to surface or sub- surface resources. The well is located within the Northwest planning area (see Map 2). It is adjacent to a recently leased pact, receiving a high bid of $50.00 per acre during the NW NPR-A lease sale of 2004. Exploration and development in the area is a distinct possibility within the next 20 years but since this well did not penetrate productive oil and gas zones it will not have an adverse impact. • There is not a visible pad, but rather an area of disturbance. Disturbance stretches '/4 mile in an Figure 36: Topagoruk #1 casing on its east-west direction and /8 of a mile in a north- side. When the casing was pulled out of south direction. Solid wastes exist in the form of the ground, thermistor cables were piping remaining from a refrigeration system that discovered. circulated. diesel to keep the permafrost frozen. A potential hazard exists because diesel still occupies the ground circulation lines. These lines stretch approximately 750 feet to the east, 250 feet to the north, and 100 feet to the south from the wellhead. Other debris on site include some large, partially-burned timbers, awater-filled wooden box (Figure 37) that resembles a cellar ('/4 mile east of the wellhead), and drilling muds. Atqasuk is the closest village approximately 30 miles to the southwest. The well is remote with the exception of a subsistence camp approximately one mile southwest of the wellhead along the Topagoruk River. East Topagoruk #1 Topagoruk's wellhead consists of an open hole cut off at the ground surface with several thermistor cables. A thin piece of weathered metal fits around the cut-off casing to resemble a marker. The weathered metal has been smashed at the base and now lies bent in half on its side. Overall this site poses little hazard to the environment or human population. East Topagoruk #1 was drilled on top of a small ridge in the Chipp River delta in 1951. It reached a total depth of 3,589 feet and is cased to 1,100 feet. The purpose of the well was to test an anticline with closure as well as test the fluid content of the permeable Cretaceous sandstone (Collins and Bergquist, 1958). A very poor gas show in the Topagoruk Formation is the only reported hydrocarbons encountered in the well and no oil or gas was recovered during multiple production tests. One cement plug was set in the 45 Figure 37: Drilling muds and a wooden box that resembles a cellar are located about'/< mile east of the wellhead. well at 1,049 feet. • The well is located within the Northwest planning area (see Map 2) on a recently leased tract. The tract receiving a high bid of $84.99 per acre during the NW NPR-A lease sale of 2004. Exploration and development in the vicinity of this well is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper formations. A drill pad does not exist. There are a few rig anchors near the wellhead, but no other surficial debris. The current state of the wellhead is open-ended 10 3/-inch casing. Casing height is three feet above the ground surface. It is housed in a small 9' x 9' water-filled cellar. The area is remote and poses no health and safety risks to humans or the environment. Knifeblade Wells There were three shallow test wells drilled in the Knifeblade Ridge area. Knifeblade #1 was drilled on the ridge at the head of a small stream, with wells 2 and 2A drilled about a mile downstream. The wells are in a highly remote location with Umiat being the nearest settlement, 65 miles to the east. Knifeblade #1 Knifeblade #1 is a dry hole drilled in 1951. The well was drilled to a depth of 1,805 feet and cased to 1,211 feet. The purpose of the well was to test the oil and gas properties of the Grandstand and Tuktu Formations (Robinson and Bergquist, 1959). The well encountered very poor gas shows in the Killik Tongue of the Chandler Formation and very poor oil and gas shows in the Grandstand Formation. The well is located on an unleased tract, in Southern NPR-A (see Map 2) where a lease sale is scheduled for 2008. It is unlikely that exploration and development will occur in the vicinity of this well in the near future. If left unplugged, the well has no potential to adversely affect future development. 46 • Knifeblade #2 Knifeblade #2 is another dry hole drilled in 1951. It was the first of the three Knifeblade wells drilled and reached a total depth of 373 feet, cased to 45 feet, before being junked and abandoned. The purpose of the well was to test the oil and gas properties of the Grandstand and Tuktu Formations (Robinson and Bergquist, 1959). The well did not encounter any hydrocarbon shows. The well is located on an unleased tract, in Southern NPR-A (see Map 2) where a lease sale is scheduled for 2008. It is unlikely that exploration and development will occur in the vicinity of this well in the near future. If left unplugged, the well has no potential to adversely affect future development. Surficial issues are negligible. A drill pad does not exist and the wellhead consists of open-ended casing. There are approximately eight empty drums near Knifeblade #2 and #2A. The wells are highly remote and should not be considered a threat to the environment or human activity. Knifeblade #2A Knifeblade #2A, also. drilled in 1951, reached a total depth of 1,805 feet and was cased to 38 feet. The well lies 28 feet to the north of Knifeblade #2A. The purpose of the well was to test the oil and gas properties of the Grandstand and Tuktu Formations (Robinson and Bergquist, 1959). Only very poor oil and gas shows were reported in the Grandstand Formation. The well was left with casing open to the atmosphere and poses no threat to surface or sub-surface resources in its current condition. The well is located on an unleased tract, in Southern NPR-A (see Map 2) where a lease sale is scheduled for 2008. It is unlikely that exploration and development will occur in the vicinity of this well in the near future. If left unplugged, the well has no potential to adversely affect future development. Simpson #1 Simpson #1 test well was drilled with a rotary rig in 1948 by the U.S. Navy. The well was drilled to a total depth of 7,002 feet and cased to 5,954 feet. The purpose of the well was to test the various formations of the Lower Cretaceous and Upper Jurassic rocks. The well encountered several very poor oil and gas shows and one productive gas sand in the Lower Jurassic at a depth of 6,183 - 6,193 feet. The well produced gas at rates up to 3.0 MMCFPD during open hole flow tests of this Lower Jurassic sand. The gas zones are currently isolated from other formations and the surface by two cement plugs set above the productive sand. The top of the shallowest plug is at 5,520 feet (Robinson and Yuster, 1959). The well is located within the Northwest planning area (see Map 2) adjacent to recently leased tract that received a high bid of $7.51 per acre during the lease sale of 2004. Exploration and development in the vicinity of this well is a distinct possibility within the next 20 years and this exploration has the potential to target the Lower Jurassic. Since the well is partially plugged, however, it poses little risk to surface or sub-surface resources and will not likely adversely affect any future development. 47 The pad is highly visible and was constructed in the same fashion as Fish Creek # 1 in which concrete was used as a working pad. Concrete was poured over a landing mat which was placed on pilings. As a result of ground movement from permafrost freeze/thaw cycles, the concrete has buckled in numerous places creating apartially- collapsed surface. This feature provides excellent shelter to small animals and rodents. Additionally, there is a small pile of drilling muds near the wellhead. The well was left equipped with a casing flange, spool w/ side bull plug, and another flange and nipple and is shut-in with no pressure at surface. The components past the flange have since been removed. Overall, the current condition of the site is non-threatening to the sparse human population and the surrounding environment. North Simpson #1 North Simpson #1 was drilled in 1950 to a depth of 3,774 feet and cased to 1.09 feet. No hydrocarbon shows were reported during the drilling of this well as no sandstone was encountered (Robinson and Yuster, 1959). Upon completion, no plugs were set and the hole was filled back with muds. The well is located within the Northwest planning area (see Map 2) adjacent to a recently leased tract that received a high bid of $12.76 per acre during the NW NPR-A lease sale of 2004. Exploration and development in the vicinity of this well is a distinct possibility within the next 20 years but it is unlikely this well will have an adverse impact on development since the well did not penetrate productive zones and future development will likely target deeper formations. South Simpson #1 South Simpson #1 was drilled in 1977. The purpose of the hole was to test the Sadlerochit Formation where it laps onto the south flank of the Barrow Arch. The well was drilled to 8,795 feet and cased to 7,206 feet. Reports show that poor gas shows were identified in the Nanushuk Group, Kingak Shale and Shublik Formation. Gas flowed at a rate of 75 MCFPD between 6,522 - 6,568 feet within the Kingak Shale (Gyrc, 1988). The gas contained more than 70% nitrogen. The origin of the high nitrogen content is unknown, but appears to be a localized phenomenon (Burruss, 2003). Sandstone tongues 48 • • (Simpson sand) within the Kingak Shale in the Simpson and Barrow localities are known to display good gas reservoir quality (Houseknecht 2001). Poor oil shows were discovered in the Nanushuk Group and Shublik and Torok Formations. Drill stem tests did not recover any oil. The well is located within the Northwest planning area (see Map 2) on a recently leased tract that received a high bid of $5.01 per acre during the lease sale of 2004. Exploration and development is a distinct possibility in the near future since the well is properly plugged it will have no adverse impacts on development. Surficially, the pad and pits are in good shape. The cellar has been backfilled with silt which resulted in ' the burial of the casing head (Figure 40). Above the surface, the wellhead consists of a 4-inch line pipe and a master valve. The master valve is frozen in the open position. The needle valve previously located above the master valve no longer exists. Beneath the casing head the well is plugged to surface and has no potential to adversely effect surface or sub-surface resources. The wellhead stands about eight feet high. Aplumb-bob was dropped and hit solid at 8 feet and stuck. It was subsequently lost. An old, stripped snowmachine sitting next to the wellhead is the only sizable object that would be considered solid waste. Overall, there is no risk associated with this well. Inigok #1 Inigok # 1 was drilled in 1979 to a depth of 20,102 feet and cased to 17,432 feet. The well objective was to test astructural/stratigraphic trap within the Sadlerochit and Lisburne Groups (Husky Oil NPR Operations for U.S. Geological Survey-Inigok, 1983). Some very poor gas shows were recorded in the Sag River, Nanushuk, and Endicott Group. Poor oil shows were reported for the Kingak Shale and Lisburne Group. The best shows were found in the base of the Torok Formation at 8,852 feet. No oil or gas was recovered during multiple production tests. The wellhead consists of three spools, each with a gate valve, a master valve, and a needle valve. Ten cement plugs were set in the well and it is plugged to surface. The well is located within the Northeast planning area (see Map 2) on a recently leased tract that received a high bid of $20.34 per acre during the lease sale of 2002. Total E&P Incorporated drilled an exploratory well 15 miles north of Inigok # 1 and used the gravel 49 r-gure 4U: South Simpson #1 had its cellar backfilled with silt, consequently burying the casing head pad and airstrip neas• the well for staging areas and a camp. It would be fairly simple to remove the wellhead but the well has no potential to adversely affect surface or sub-surface resources. Additionally, the well poses no threat to adversely affect future development. • Inigok #1 is one of the few logistical Centers r figure 41: Aeriat view of Inigok #1. The drill pad and reserve pit Within NPR-A (Figure are visible in the top of photograph. A road leads from the apron of 41). The airstrip and pad the airstrip to the drilling pad. are maintained with no solid wastes present. The wellhead poses no risk, and with the plugs already in place, could be removed. Additionally, this well has ayear-round airstrip and serves as a logistical base to various NPR-A activities. USGS Monitored Wells The USGS has used wells drilled in the NPR-A for collecting temperature data to better understand both the global temperature pattern and its effects on the permafrost. The wells that are currently used are properly plugged above the hydrocarbon bearing zones and into the well casing. The wells are filled with diesel fuel down to the shallowest plug at depths ranging from 1,500 - 3,000 feet. For a list of wells see Appendix B. The program began in 1958 and will continue for the foreseeable future. After this project ends, the wells will have the diesel extracted and the well will be properly plugged to surface. Diesel is anon-corrosive agent, and even if the casing should corrode there would be no impact to the surface resources and minimal impact on the sub-surface resources as there are no known fresh water aquifers in NPR-A. The following wells are monitor wells with surficial issues. It is difficult to establish a rank since the wells are sufficiently plugged. The cleanup priority is difficult to determine as the primary tlueat lies with wells having downhole issues. However, political concerns could influence the timing in which the surface issues are dealt. East Teshekpuk #1 East Teshekpuk #1 was spudded in March 1976. The well was drilled to a depth of 10,664 feet. It is an active USGS monitor well that was properly plugged. The top of the shallowest plug is located at 2,400 feet. From that point to the surface, the hole is filled with diesel fuel. With the well properly plugged and diesel fuel being anon-corrosive agent, there is no downhole issue with the well at this time but there are solid wastes buried on site that may warrant removal. 50 • East Teshekpuk #1 was drilled on a small peninsula on the southeast side of Teshekpuk Lake. The southern shore of the peninsula is protected from the prevailing northerly winds, however the north shore doesn't have the luxury of a barrier and is subject to erosion. Unfortunately, solid wastes from the camp and drilling operation were buried on the northern portion of the pad, possibly in the old reserve pit. The northern shore has been battered by numerous storms which have eroded the shoreline and exposed the solid wastes. The wastes are unsightly and potentially hazardous. While the nearest village of Nuigsut is 52 miles to the southeast, Teshekpuk Lake is rich in subsistence resources and numerous sununer cabins dot the lake's shoreline. It is possible that at the time of surficial restoration, the downhole could be pumped free of diesel and plugged to the surface. Awuna #1 Awuna #1 was spudded February 1980 and completed April 1981. It is the only well drilled in the southwest portion of NPR-A and is 90 miles south-southwest of Atgasuk. Awuna is the most remote well in the entire petroleum reserve. The well was drilled to a total depth of 11,200 feet. Drilling was conducted over two consecutive winters. Ice roads and an ice airstrip were constructed for logistical support. The project cost approximately $6 million (Husky Oil NPR Operations-Awuna, pg 5). Due to the orientation of the pad, the prevailing winds force wave action into the drilling pad, undermining the sands and silts which make up the pad. Below the sands and silts, Styrofoam was used to insulate the underlying permafrost. Wave action has eroded tens of feet into the drilling pad, exposing the Styrofoam, which consequently breaks loose and blows away. Wooden pilings exposed from erosion show how much attrition has taken place. Styrofoam can be seen all around the pad with pieces blown up to 5 miles away. Downhole, the well is in good shape with sufficient plugs. Diesel fuel fills the top 4,000 feet. The well is an USGS monitor well. Wellhead components are in working condition with no problems. The immediate concern with this site is the blowing Styrofoam, but as the years progress erosion could become a major issue (Figure 42). The loose Styrofoam should be cleaned Figure 42: Awuna wellhead with exposed wooden pilings and up and erosion .progress Styrofoam. should be monitored on an annual basis. It is also worth mentioning that the same type of scenario is unfolding at Tunalik #1 (another USGS well). Wave action from the reserve pit is beginning to 51 # ~ undermine Styrofoam from the drilling pad. Tunalik #1 differs from Awuna #1 in that prevailing wind direction does not force erosion in the direction of the wellhead. Uncased Core Tests There are thirty-nine uncased core test holes. These holes were typically left filled with drilling mud and abandoned without being plugged. Drilling depths ranged between 500 and 1,500 feet depending on the purpose of the test. By nature, core tests were drilled to test soils, permafrost, or lithologic units. They were not drilled for oil or gas exploration purposes and did not encounter hydrocarbons. Many of the cores are stored in the Alaska Geologic Materials Center (Figure 43). The BLM has examined the cores and they are extremely friable. It is likely that these uncased core holes have naturally collapsed and harmlessly blended into the environment. There is no surface indication of their location and BLM has been unsuccessful in locating them during several visits to their reported location. They do not pose any potential risks. Barrow Gas Wells The Barrow Gas Field Act of 1984 (P.L. 98-366, 98 Stat. 468, July 17, 1984) allowed the U.S. Navy to transfer several wells to the North Slope Borough. The Navy drilled six shallow wells between 1953 and 1974 to test the natural gas potential. Between 1974 and 1982, 10 additional wells were drilled to help supplement the local gas supply. The wells were developed for use by the local government agencies and Barrow residents. The act conveyed the sub-surface estate, held by the federal government and any other interest therein, to the Arctic Slope Regional Corporation (ASRC). The BLM acknowledges the surface and sub-surface lands as conveyed and the Office of the Regional Solicitor has confirmed that the Transfer Act included the wells and well locations, and any liabilities associated with these wells are the responsibility of ASRC. 52 test, are stored in the Alaska Geologic Materials Center. • Plugged Wells Square Lake #1 Square Lake #1 is a Navy well that was drilled to a depth of 3,984 feet. Its primary intent was to test the Cretaceous rocks in east-west trending anticline structure (305H pg 424). No significant shows of oil were found. Gas shows were encountered in various sandstone beds between 1,600 and 1,900 feet, but otherwise the hole was dry. Upon completion, four plugs were reported to be set with the upper plug at 728 feet, well above the gas shows. Two other plugs were reported to be set in the gas zone, spanning depths of 1,640 - 1,840 and 1865 - 1934 feet. In addition to the six plugs, water and mud fill the remaining distance to the surface (Collins and Berquist, 1959). Upon successive visits to the site, BLM field crews dropped aplumb-bob down the hole and hit a solid obstruction between 8 and 10 feet. Don Meares, Northern Field Office, visited the site in August 2003 with an underwater camera and determined the solid surface to be cement. The Square Lake area is clean of debris with a few deadmen pilings (anchors) near the wellhead that could pose a ground hazard. The wellhead is open casing cut off at ground level. Umiat #2 and #5 The Umiat #2 and #5 wells were plugged and abandoned in 2002 by the COE (Figure 44). The wells were drilled on a common four-acre pad in 1947 and 1951. The purpose of the wells was to test for producing lithologies and determine petroleum quantities. Umiat #2 penetrated the Gubik Formation, Nanushuk Group (Chandler and Grandstand Formations), Topagoruk Formation and Oumalik Formation. Problems with the drilling muds were encountered while drilling Umiat #2. Analysts determined that the fresh water drilling fluid caused formation damage and the Umiat #5 well was drilled adjacent to the #2 with acable-tool rig. The well produced 400 barrels per day with the most productive sandstones in the lower Chandler and upper Grandstand. Below a depth of 1075 feet, 107 bai-~•els of crude oil from both Umiat and Simpson were used as a drilling fluid, as well as 11 barrels of diesel fuel (Robinson and Bergquist, 1956). In 2000, the Colville River threatened to erode both wellsites away. The COE took action under the FUDS program in the winter of 2001-2002 to plug, abandon and remove any surface features. The concrete lined cellar of Umiat #2 and wooden platform Figure 44: Plugging operations at Umiat #5. M from Umiat #5 were removed. Costs were approximately $25 million dollars due in part, to soil Approximately 30,000 tons of petroleum-contanunated soil was excavated. remediation. The soil was 53 • transported on an ice road to the Umiat camp where it was thermally treated in a rotary kiln to remove petroleum residues. Small quantities of PCB contaminants were unexpectedly encountered after the excavation was completed. The source of the PCBs has been linked back to the #5 well and the fluids used downhole. The ever-shifting Colville River continues to erode the north bank and is approximately 50 feet from the old wellbores. With the removal of hazardous soils, this site should not be considered a threat to humans or the environment. Umiat #3 Umiat #3, also known as Umiat Core Test #1, was spudded in December 1946 and drilled to test some of the oil bearing zones encountered while drilling Umiat #l. The well was drilled on the northeast corner of Umiat Lake just below the hill from Umiat #4 (Figure 45). Umiat #3 penetrated the Gubik Formation and the Nanushuk Group. The Grandstand Formation within the Nanushuk Group is considered to be the primary source of oil between the depths of 258 and 514 feet. The hole produced 50 barrels per day prior to shutdown. The well was re- tested nine months later with production dropping to 24 barrels per day (Robinson and Bergquist, 1956). The wellhead consists of homemade components with a single water service type valve and is capped with a needle valve. There is no seeping present at this Figure 45: The view from Umiat #4 looking southwest site, however seeps are common in toward Umiat Lake and Umiat. Umiat #3 is located on the area, including an active seep in the near shore of Umiat Lake. Umiat Lake. An extensive piping system is still visible. The pipes probably supplied water during the drilling phase. They connect Umiat #3 to #4 which then follow the hill from Umiat #4 to a side channel of the Colville River. Their function was to either carry water to the drilling sites or assist during the well's production phase. The overall surficial conditions including the wellhead and piping, do not pose a tlueat to human health nor the environment. BLM plugged the well in May 2004. Umiat #4 After encountering relatively poor oil shows on the first three wells, operations were suspended until 1950. Cable tool drilling rigs were introduced to determine if the fresh water muds had hindered the oil production in the previous wells (Robinson and Bergquist, 1956). Cable tool wells did not require the excavation of a cellar; therefore Umiat wells #4-#7 did not have cellars. Umiat #4 is located on top of the hill to the northeast of Umiat #3 (Figures 45, 46). The well was drilled May 1950 to a maximum depth of 840 feet. The hole bored through the Ninuluk, Chandler and Grandstand Formations. Oil was found in the upper and lower 54 • sandstone of the Grandstand Formation. Drilling encountered good oil shows around 300 feet with a total 500 barrels produced (Robinson and Bergquist, 1956). The wellhead consists of 11 3/-inch casing protruding 36 inches above the ground surface. The casing is capped with a steel plate. Upon removal of the cover, the hole was open to the environment. No valves or gauges are present. The well was plugged by the BLM on May 9, 2004. The well poses no risk to humans or the environment. Umiat #8 Like the other wells drilled in the 1950s, Umiat #8 was drilled using cable tools. The well was spudded May 1951 and completed August 1951. It is located on top of a ridge that separates Umiat from the Bear Paw Creek valley. Drilling intention was to determine the quality and quantity of hydrocarbons in the Grandstand formation near the crest of the anticline structure. The hole encountered the Seabee, Ninuluk, Chandler, and Grandstand Forn~ations. The Grandstand Formation produced approximately 60-100 ban•els per day of oil and more than 6 million cubic feet per day of gas. The well was shut in with a gas pressure of 275 pounds per square inch. The gas was analyzed by the Bureau of Mines and determined to be 97.3 per cent methane. Brine was mixed (35 lbs of salt per barrel of water) and used in the drilling fluid to prevent freeze up. Brine solution of approximately the same ratio of salt per barrel of water was used to kill the well and set the plug while cementing casing. A total of 21,695 pounds of salt were used in the well (Robinson and Bergquist, 1956). The well was plugged May 2, 2004. Prior to plugging, the well was nicknamed the "Whistling Well" due to the gas of which was escaping through fittings and valves in the wellhead. The wellhead is easily the most complex of the 11 Umiat test wells. It consists of five valves and multiple gauges. It has several homemade components and reaches a total height of ten feet. After reporting the seeping gas in 1996, two new valves and gauges were installed in 1997. The new gauges have been checked regularly since 1998 and have consistently read 250 psi. Despite replacing the two valves and gauges, gas continued to leak from the wellhead. The largest of the leaks occurred just above the top flange where a 4-inch nipple and collar are welded together. Other leaking occurred at the fittings of some of the gauges. The wellhead is sited on a gravel pad. A series of piping extends from the wellhead to a small stock tank about 100 feet to the south. The tank probably was used as a holding tank for the oil while testing the production potential of the hole. The same style of stock tank is present in various old photographs found in the Umiat area and may be the same 55 rigure 46: Umiat #4 prior to plugging. The wellhead is located in the center of the photograph. tank. Oil from inside the tank was sampled in 2004 with test results positively identifying PCB contamination which is slightly below the level of concern. Umiat #10 Umiat #10 was spudded September 1951 and completed January 1952. This well was drilled to test the Umiat anticline and is located about a half mile northwest of Umiat #8. Total depth of the well is about 1,573 feet. When the well was bailed, it produced 222 barrels of oil in a 24-hour time span. The most productive layers occurred at 980 feet and 1,095 feet, penetrating both the Ninuluk and Grandstand Formation (Robinson and Bergquist, 1956). Also encountered were the Seabee and Chandler Formations. The hole was somewhat problematic as it caved considerably during drilling. Operations consisted of a drill rig set on a foundation of 12" x 12" timbers with a thin layer of gravel in between. Twenty-five pounds of salt mixed with Aquagel downhole to help lubricate the drill bit above the 650-foot marker (from the surface). More Aquagel-brine mud was used down to about 1,000 feet to keep the hole from caving. The wellhead contains two valves; a master and a .gate, both are closed. The total height of Umiat # 10 is approximately 10 feet. The 8 5/8-inch casing is flared and open at the top. This well was plugged May 6, 2004 (Figure 47). and water (per barrel) were used ~:. ,~ -:~s The surface near Umiat #10 is in good shape. There is no existing pad and no solid wastes. With the recent plugging of the well, it is not a risk to human health and safety or the environment. 56 Figure 47: Plugging operations at Umiat #10. May 2004. U APPENDIX B 20 Wells Currently Monitored by the United States Geological Survey: NAME Atigaru Awuna* Drew Point East Simpson #1 East Teshekpuk West Fish Creek #1 Ikpikpuk Kugura Koluktak* Kuyanak Lisburne North Inigok North Kalikpik Peard Bay Seabee* South Meade South. Harrison Bay Tunalik* Tulageak West Dease HOLE DEPTH(meters) 648 884 640 600 727 735 615 582 227 856 532 625 660 591 393 549 399 556 756 823 *Are also part of the CALM network (Circumpolar Active-Layer Monitoring). 57 • Fish Creek Test Well #1 is located within the Northeast Planning-Area of the National Petroleum Reserve-Alaska. lov-iou • • Background and History Two U.S. Government exploration programs focused on the petroleum reserve. The U.S. Navy began the first exploration program in 1944 and drilled a total 91 holes in the Reserve. The Navy focused on Cape Simpson (Figure 1) and Umiat (Figure 2), the two most prominent oil seeps. Navy contractors drilled 1 l test wells at Umiat and another 34 on Cape Simpson. Overall, the program located eight oil and gas fields (Fish Creek, Gubik, Meade, Simpson Peninsula, South Barrow, Square Lake, Umiat and Wolf Creek). Following the conclusion of the Navy program in the mid-1950s, focus began to shift eastward toward what were to become State lands. Exploration activities in the petroleum reserve between 1953 to 1975 were limited to 9 wells in the Barrow area until interest increased following the 1973 Arab oil embargo. The. U.S. Navy and the USGS contracted with Husky Oil Corporation to drill 9 and 27 exploratory wells respectively from 1975 to 1981 with one new discovery in the Walakpa Gas Field. The National Petroleum Reserves Production Act of 1976 (NPRPA) changed the name of the Reserve from NPR4 to the NPR-A and transferred administration to the U.S. Department of the Interior (USDOI). ~~~1~~ MA ~ ~. ~ 2010 fob ~~° 3 Figure 2: Oil seeping in Umiat Lake. In 1981, Congress authorized the Secretary of the Interior to conduct oil and gas leasing in the reserve (Public Law 96-514 December 12, 1980). Four oil and gas lease sales were held between 1982-1984. There was little interest in the sales and only one well was drilled. Legacy wells are commonly defined as wells that were drilled within the NPR-A prior to the 1982 lease sale. Exceptions are Grandstand #1, Gubik #1 and Gubik #2 which are legacy wells. drilled by the U.S. Navy outside the reserve boundary. Legacy wells are typically grouped into two categories, those drilled by the Department of the Navy and those drilled by the United States Geological Survey. U.S. Navy Exploration The U.S. Navy drilled a total of 109 wells and boreholes in the petroleum reserve between 1.944 and 1977 ranging in depths from less than 50 feet to almost 12,000 feet. Of those, 32 were wlcased core tests drilled primarily to assess the geological characteristics of the permafrost and shallow geologic strata. They tended to be relatively shallow, rarely exceeding depths of 1,000 feet, and are not considered to be oil and gas test wells. Bulldozers created tracks when they scraped off the top vegetative layer. While the initial result allowed. for a smooth driving or skidding r igul°e ~: ~raund rlis~urba~ice at ~"ish ~rcek #1, Surr-mer 1949. surface, the scrapi~ig Photo by George Gryc. InV -~ ov permitted the sun to heat the exposed ground, thawing the underlying permafrost. Low-lying areas of these tracks collected moisture, creating awet-tundra .environment while other sections that remained dry fostered the growth of shrubs and willows. It is still possible to locate many of these old routes that are more than ahalf-century old. The Navy sponsored two separate drilling programs. The first program concluded in 1955, and the second program began in 1975. The Navy drilled Cape Halkett in June 1975 then awarded a 5-year contract to Husky Oil NPR Operations, [n~c`~(Gryc, 1988). Six d ,~~ lam' 4 in remote areas of the leased acreage. These staging areas have the potential to aid BLM's future remediation work associated with the legacy wells. Map 3 shows the relationship of usable airstrips to legacy wells. BLM efforts 1976-1982 The USGS initiated cleanup of the early Navy wells in 1976 and contracted Husky Oil NPR Operations, Inc. to manage the project. The NPR-A was divided into four quadrants; Arctic Coastal Plain, Northwest, Southwest and Southeast. The cleanup effort focused on the solid and hazardous materials that were abandoned in place by the Navy and was carried out during two phases. After the spring thaw, crews would travel by helicopter to new sites to break down and transport the wastes to an accumulation site. If a suitable site was located, non-combustible solid wastes were buried. While the ground was still frozen in the spring, aCat-Train crew retrieved wastes from storage sites established the previous summer. When hazardous materials (explosives and full drums of barite) were found they were transported to the storage site and hauled out the next spring. There is no evidence of anything hazardous remaining on site. In 1978, an extensive cleanup occurred at East Oumalik, East Topagoruk, Knifeblade; Ikpikpuk (explosives), Skull Cliff, Square Lake, Titaluk, Topagoruk, and Wolf Creek. A ----- total of $1.87 million dollars was spent and 7.2 million pounds of solid wastes were handled, stockpiled or burned. During 1979, cleanup occurred at Fish Creek, Grandstand, Gubik, Oumalik, and several other areas in which a well was planned but not drilled. Approximately $1.8~ million dollars were spent and 24.1 million pounds were handled, stockpiled or burned. Field work for 1980 consisted of cleaning up what had been stockpiled and over-wintered from 1979. There is no recorded summary of cost or amount of wastes handled past 1979. In 1981, Husky discharged itself as contract operator and put out an invitation for bids. While waiting for bids, Husky continued its scheduled spring cleanup work at East Oumalik (Figure. 5), Wolf Creek, Fish Creek, Kogru River, Meade,_Oumalik, Square __ ___ Lake,_and Ttaluk. The USGS did not fund additional work at Skull Cliff. The contract received no bids and Husky did not return. The USGS drilling program ceased in 1982. 7 I~ is void of surficial debris. The cellar is visible in the mid- right portion of the photo. Given the expense to plug the legacy wells and the relatively low risk associated with leaving the wells in their current condition, consideration must be given to waiting until infrastructure improves in NPR-A. The highest risk wells are on the Simpson Peninsula on tracts that were leased in the June 2004 lease sale. This area has good potential for infrastructure to be developed in the next five to ten years and improved infrastructure would save the BLM several million dollars. The first infrastructure in NPR-A is likely to be built during the winter of 2007 with the construction of CD-6, a gravel pad with a road to the current Alpine Facilities. The proposed gravel road is within 8 miles of the Fish Creek #l. Infrastructure in other areas of the Petroleum Reserve, e.g. Simpson Peninsula, is not likely for at least another five to ten years. Another option is to allow the lessees to plug the wells. Language included in the proposed Energy Bill would allow operators to plug orphan and legacy wells and recover 115% of the costs incurred. Lessees may be able to recover costs through rental/royalty reduction which would not require BLM funding. Current lessees have expressed intec•est in this. This, too, provides an opportunity to get the wells plugged at a reduced cost since, while drilling exploration wells, the lessees would have the advantage of having the right equipment and personnel in the area. More than two-thirds of the legacy wells and 7 of the 8 higher priority wells, are on or adjacent to leased lands. The lands around J.W. Dalton #1 (Figure 9) are not available for leasing. As noted above, the cost estimates for plugging the wells do not include removing old equipment or surface restoration. Based on some limited estimates, the additional time, transportation, and equipment needed for removal of solid waste and surface remediation could be in excess of $50 million. These costs would vary depending on the amount of solid waste removed, level of site investigation, and the degree to which the sites are remediated. (~~ .~ ~ 0~ 12 Figure 9: J.W. Dalton #1 wellhead in relation to the advancing beach head. Fall 2004. .! .\ /-. e~~,ceL" :"-'/ ~' .;> _.- National Center, Mall Stop 970 January 28, 1975 Mr. Richard E. Anderson Anderson, Wilcoxon and AssocIates 11526 Sorrento Valley Road, SuIte G San DIego, CalIfornia 91121 Dear RI ch: In compliance wIth the request of RussSlrnonson of Tetra Tee, I al11 sending you for examInatIon, our microfossil stldes of NPR4 Fish Creek T.W. I. The shipn~nt (via registered airmail) contaIns 36 core samp1e s11des and t33 ditch sample slIdes. The latter repre- sent over 400 samples, but many of the lower ones have contamina- tion from Upper Cretaceous beds. Although alt the slides from the Fish Creek weJ I are beIng sent to you, I do not think that aJ I need be reported on. J believe the data taltied on p1ate 20 of my Prof. Paper 302-0 covers the Upper Cretaceous adequately. Furthermore. I believe that plate 20 can also serve as a guIde to determine which samples to examine, partIcularly if you can later acquire some of the original material to study. Good luck. Sincerely yours, Ha d·ltn' R. Be rgqu 1st Harlan R. Bergqulst:cda cc: D R F ------- p&S Branch HRBergqu is t j Russ S ¡monson George Gryc RECEIVED J A N 3 1 1915 " ;'.:) 1'i..'J JAN ') v 1 1975 Gl-?'pro \.,. ALASKAN GEOL. BR. MENLO PARK IDD-!DÒ . . ; /l ?..:~:c;}=---~.- , ......'--- >-~~-^~':.-' ~;-- /' '~1iï~.17 11, j/?~ æ-., ÎIdU~V. _~t ~plø~t;b:m ~ (AJuk.i) !ftc.~ ~st. Ottl" .~ ~ r&los V~1'd~,$ ~~;;-: ?'J.¡¡¡.:Ui"~m.U. R!::( FEB ,1 1bb4 NOlf;D FES 24 1964 OltYC ~ 1.-1 ::u AJ.ASK!:Ji c;; r t r" ~o ~ , I ~t~t. t.o .~. _ .~ in ~l~ yo,1U'" l~t;t.Wi' ,in~p...~ to Wf¡¡maYÞ1\ <wn Fiø};~ C~.k ~. aU î~. 1 a _~h.. Ala.. ~ ~«1 stW1; Q! tb* Jrd.e~tð$::i:!iW f~ t,hu -.11 iii4:t~ :11\ 'i1ifI ~þCrl. on ~. ìI.iero- päl~J.oQ of tÞ~1Þ l'MU 4>t _:n.~ ~ W:doh u in .... ~ ot' t.b:e ~.idit.&:r&* It.._ .~H tœ- p.Wl1øti.øa J.øt ~to~# nt I ~. i~_ .. it 1d.ll ... ~ tltJ~ tM ~~.~t. PJf:tnt~ Oft~. u t.nMe t..àiBp Wive 1I.1Þw,1Jr.. !ke:repøri. 1aehtti_ a t.~ ~ t.r ~ .....t -.U drill- ÎJ11~. .. f--.1 ,~ aa.i rø~t.1ø_ ~.. iDf'id Creek t,Qt, ..u 1- ~ p,v¥ ora a e~ which ~ ~ tØ ~A~1cmtifh1:p of ~ li.øh C~ .:tl to ~ ~ wells aa4 $~ .~ ..n ~.. ~j,~ ~ ",pori i.3 aot "1..... I .. c~IÍ.. ,.. tke ~_ 1d.~R;- ~Lolø¡ie~~t.~ øn ~ wU.. I __:ùt~ ~ ...~~r m.t.ttt i'ol'Jatlim tø t-.1M$ .~ .-"1_ ~ ...~ ~M t.ø it. ta ~«t" ~U.e":t.:iJmatt4 I have UG~ the ~~. t~ 6~J1OO f"t. W tbe to~tJ.íjJ1 .~ 1: Wet1t1-eà ~ mudait'... m _ eon ~ 2 ,vt~1-201J.l"t.. I ~ _t d..1hdi. ~ .......1"'iae ø.... oJ: ~ Pr.biee ~_k '~t.iøa !;~ ~ ~ .Iltdf ~t.iø_ t.hø ~i~ Þl the ~ø~ of t~ ·Uì .t.h« .\Ü.t4h .~II. ~..,. the $øt.~lHiU .~ 1)t. ~ ~w Il1tft ~t.~ .... ~ ~ .t.o~ (it tJu~ ~ ~ ,~_ ~ ~ t~ 6~4" foet, andt.h* ~ tR.U .. ~ (b....k ~ or ~ .~ J:bLfot rø..-t.1cm &wi ~* ~ of. thø .~.. C"",*"1"Mtt.iß, _~ t'~ 6.3' .rut. \0 ~ 2,.lOO 1",,, ~ ~ ~ 425 .t.t a.re ~ art. ~k (ñ.1~) ~.l'& W ~~_ ~ _ .~t.iOr1I.' :Lzl d1teh ~a.Vø1oøi. «laN ~. ~. .t 120 r_t .-1 Sft ~_ ia t.be tint ~ eorM.# _t. ~ t.... œnt· ~~7 1.... 1ft the __t,~. ..' (~œ ¡liar) ... t~Ù1_~a.t ~H'5 .rw¡' tMt... 'r&ppm ~ ~ t~ :1a ü~ ~.$ a.t. ,. røt :La ~ t.~i3tie of tb. ~t.iMl J!i.11 _~ .of fba ~wm..tf "~t~. 111 ~~lI1ll OC!-re tot 1.. ~ ~epeo.i,.. f1t~olaria veN £~ :ù\ ~ f~i(~5-(-;J' tM$ .. l,.025-l,Oj) tMt... ~:r~ftifEi~ i%i tJ~ ~ Ilvit ~tl_ iBel~. a r_ &,..1_ ~me~ to ~ o!$~. ~ ~_." - .. t.,., ;!$JtÐC;ie$ U"e .. tó ~. ~~C···"rJ -~rH Dr'TfI ','- 110'. I-tl-....II 0 'hiM vL· . . "')" A 9(" ~~ !,.- 1-') t} _0 ! t t"",/.I ! j.,.~ _"c· (.ø ..'~. ! -.. í E. H. COBB . . ~;hw ~ (~ _ ~t.!oa) ~. t~ ..." '¿j2.00 i_to tø ~,~ t_t ~ _ ~i$.~~ ~ .~. tø, of 'iíM ~ ~t l$t¡¡J' t_ -. ! tttii. -'N 1.- ~lt*t.1_ tor ~t,.. ~. .~ .~ .~ t;.U .~~ ..¡art <;t ~. ~. or ~~ þ ~ ..~jhit .t.ø.t...~1¡. .r .~ ~. .m..ttp, ~t .. 1_. ~ -~ .~ ~~t..'~l..i. ~3i .~. ..... ~ t~ u )øw .. ~ ~':f~ 2..06J"'~$'Qfl .t~ m .~ ¡ i__tlti~~Ø_ "~;t._... ~.t t.-h-. ~ ¡ ~ ~ ~~... .!'.bûr 'Þ ~ .... ·toa t.hiJt l~ ., 2~ tøt,,_t..h.tathe .~ ~'-J ~ .t .. ~ ~t. } .~ l'~ ~ if, .~ t'~~,49,...;2þSQ' tMt. '~.~Qn'Ll~ ~ t~..~}*¡~\iÞ 1~a ~~t..:t õtï~ _ _n ..~ ~ 1ft 6 _re !'~ 21~a~%W.f" _~¡~ .~ wus· ~ ~t a tÞ ~.~.. $p".~ ot ~ .~ ~ a t.mt _n 1n Wh.iêh ~~,'" . ft.. ~~~tiøn t~ ~fS'lr'¡I'(t~ t_t ~ ~. ~ ~t £w ~ t_ ~~m 1», ~ (it .t,M: ~a. Ii. f_$pec.~ <d' ~\! .~ ~. f~ i. . _ft .t~ 2#'''l,....2,~S l~ ~~~I ~- ~¡ ä &_~ f~ 2.,5'3""',945 u." .. » fa\ØJ, _W~ o.t .~ øte~_ ... ia tbf¡~. a~ )d.þ$;t. ~1#__. ø£ ..., t_1 ... ~ ~ Ub~._ U Ú , t_. but...4~ U kí th. .~ t~ "Q,o-, Mì.. ~'-'''ç .ù1 ~ cø.... ~. 4,J,;ot_t._~. ~...~...t 4,.. #7~..t_.. ~tb..~.,.. ~. fir ~ ~ ~ l~ _~ap i. 11_ tMf¡, .:ùr£ ~ ~.... ~~t..w..ot ~. ~, ___ .' ~~~~! fA~ _t~ iA. .~~.t_..~.~~... f"'_ 1. _... .~ 3.t3S6- J;¡t",tet -'¡J~l, 1e6 t~~ 1u __ .r "t. ..;00 r..- i$ ~~n~ t.o .1_ ~ ia ~.~(ft....ua. " $'~"ù,~ i. ~ ,t~ 4,~.1,5tî t_ r~. ,. ~~ '~..f~ ~ tM ~ ~.1 .~. _11_"~- ~ UÞ~_ f~.. __øt....·~ .....~. ~. of ~_~ t~ .~. _1"'$$ t.- 5.~¡""J,,49(j r_ u4 ,~ it. ~ t~ 6.f2.)~~~~ tMt ,fi.uc .,' tw ..,"~ {~~Ü·· -~.. W~.. .~ f¡ t.. ~~.. .~,i $i.ï~ .. ~ .' _.~. .~.~'~~~. .."".4.~ .r~.. ",.. ~i..~ ~ ~ ~.1> l~w tit. ~~ ~ ',400 t_t _ _ .i~Gt ~ ~ ~k ~4ti_.. tl';5f.\&l1d~G ·the ~tc~t~ ~1],~t.1_ i'~ ~ 'iait .~. ~j &..~ ~v4il¡fj,~~1. .~ 1i'~ a ~ lab AUd w ~ ~~ ,,,~v1$it. !:~~" --...~ I wld*mt&ud that I sharl, be racei'Ving migmfo"Ia '-aidft frw WIs Shals WOal test well No. I Zrm our Fsjxbabks lab ww of' the" la�m so I oball have a look at th* "Cgum SW WLU also pm"bly have an -opporturaty to see the Vast umiat fauml 41-1-das go voll. D"t rag"".. ftrisa Borvlq�t At, gomm UNIVERSITY OF CALIFORNIA SCRIPPS INSTITUTION OF OCEANOGRAPHY, LA JOLLA 12 April 1962 Dr. Arthur Grantz Geologic Division, Alaskan Geology Branch U. S. Geological Survey 345 Middlefield Road Menlo Park, California Dear Dr. Grantz: I have made preparations of the five samples from Fish Creek No. 1, referred to in your letter of 6 March (G -Alas -AG), and am 11 v e 1; ry _ p , leased' -with the results. All contained Radiolarla, which are moderately well preserved in two of the samples and exceptionally well preserved in a third. This is exactly the kind of material we need to begin to work with, If we are to make any sense of the Mesozoic. Thank you very much indeed for the trouble that you and others went to, to provide this material. I shall certainly let you know how the investigation progresses. WRR/mj Yours sincerely, TECH. DATA sECTION SEp 5 1963 E� H. COBB W. R.Riedel ."-,._-~"",,._..p. ~'ÊS'TRICTED FOR OFFICIAL USE: ONLY (èoPY~No'~~3~ . (;¡¡;r:j? :'n~\ C~¡'~~l,;,t ~?> .{~J'f77 .(:., [3,;:';\':: ,:~:L2:'~ ~:~:;. ~,n;j ~ .¿:" 3~b·~1i~,Oi ,né 0;"£' ::~~"~'''';:;;:~; '~;;:~;;" ~;" ¡~ ,~;.~\,,:~:;~ J,¡, i~; ;~;;:,; ~;;:;:' C~.' ';~¡."~>':: ;:!;:~;; :,;y"¡' ~:;i~';fi,,;,;l'i. a:;;';;;:,)~:';~o;f~" , ;~:;";; \';' ,~;",: "; ~~ :"':;;!i ;" f;~);~."::~:; '~;;' ;,:.~, 1 '~;;; ;::; ';' ;'1 ; ~~::Gl.,)g$.;~ri;~~; ;:'.j\'}in"}. 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Ai; 26~3Q·~2G05t :~s an. s.0ru1.!lanCÐ of 11~at:~riaJ..~ C:TI.~ 1n.i\~;r(1t~-r;cl"}i,c 1:1a.@ eøz!;.1. a't~ 2545 ~ " ir:c~~~~~a~ð0 ;a':~j pl.~1-·~~ 27(:-O~2'fjl()~ ;f1~~t)1}..fj 1n(.::D,ê3.~'a ~;~ØJ~~7 ð£¡.1fl: (tt....Ët~: iJ êb;H3 :.!J""'<,:S'ua;(:.;ã 'l::i.1.;l; i) t>;8 û1I?l ~ 1J.1, -cl=;;: ?, }>H:; c:r\.} 8 tf~}8 dÜ:l ï]t~ * l1!,C:}ltí ~f)2;:~;¡~7!· J.~Q¡;'1~cal(;2?1·{~O~~~Þ~ 1'.....,., r..',·,' "'\ Cn~j;T!on~ 1.~3~':::i'?2~~i~ '. :2fi·.4<,:tC~~ (~~91,;5; tjcT~J. ~ . ,Ù~.j. ,DiTjl }.;g.:r i)118,·t ~~rJ.. C(J:t~"8 ;~~G l .:,. ~:_,) ~~i~~~,E~(); J -:;-~':'0 n¡ G;!,,;,;...~~')}::::t~ J~::·:~i~¡ i; f!.,'S .E:oiD.C. {-;(;~T}. t:~:~~n't~.~·, ,;~^ ,.z:.' ,;;; ,\. -/ 10\ EL~ ~Qi::.Ç;û01,Ã(; ';_-'; n,f,}.~ -. ':~;;'=L~.. (~:_:";_,;f.' ':,;¡ ~;.~ ,.'-' ~;tl·t~1 }~!2-'}:·;_P.~-:l() _. ?" .j ~ ~·~l;:3. ,~:.~~~-¡ r:,:.eJ P; ~}U T:.'~"'" ~}:~,1-:>~2.: :3·::;'l G C:i "",\.) .."~ ~ ,. t::!Io~'4.~ S:t.l~tì ~J}~lt}j s:baJ..¿? :El'1a~~1ï(1Z~8f slit~h<-61y 1~a.11èy; f-§.~;?¿:§1.Sk1 ù~($ darl-: l)¡,>o"{i.}:'l: f~¡,~t:r 'bc; go(:;(1 s'bain darl:: Q~tl miOé'\C':30t'tGl, non~calCa,rG0118:f '{:Ii tll 1 ami l1Z¡ ~?elay = da:.~l~ t;¡::-~l, ~:al'lc;s"J~ ~~g ;;~~~ ~~~;d;~~;:~:';1~~~;fo~~~~~,;~ ~.. ;O~;a;~;V~~~:'!~~;~ g m8 3h) 04)O";:¡Oj m(;Ja.~{.u.m ba::;:.t!. \~r(JV ¡¡l..;;:i~ìl) C·:¡¡O.r,;'1 .~l£,hj ~~aÁ'~{'~-' (+12t) mf~Ja1'l) l~ :36~'b; ~le:f:r fg__D~'} ~k)}n(l <+:230 TD~~ih) 5gi~ 2'~ 6t1 $11 t t..'l1 r:!l~d t~':vtz;.f)tl~t nhÐ..ly f:2e..ci;u.:r(~" øligJl'tly 323:Jl't\:i' ~ br01t~l a2~d. :;lGllô'k::L ~11 bl~{1vm:: gõo(1 g tai,;:) dm:l:: i)il ~ no;~cal~2~8C~~$ ~â~iable~ I~1:lexo:fo~;sil fJi:1,"bËtant~~ l'?t? S}1aly cl~\Y'1: l~..e:l~rt €~)a¡:t~. nön~calcar8cl,1~)}' r}ica,r:~~011;]~" 1i11 ~:jh oCd:&.~t:i.o%l~:,l '3i1 ~G l~~do:r~ 5Q l1aas :)JjV\rø~ ~~11u9 1¡'~~1.~:~0s sar~d_~ m~(1.i1~:1D to ~le¡":lr :f~"nfJ gre#~.nGd.~ 9~il.ttfir~ '2D 'to 2 C!11 ·t1.1~~cl~:; f.~otl g?~l~.:t.n Ö.Ë\~l\: oil SJ1èJ.;V cl~,y~ l~,,~~l·ij gl"'2i¿l~ nOll~caJ..CEìrêOtl~~ slir1;irtly micacao12,!t}:J ~~1 t1:~ lsD.sês a.n.d. lenJ,icJ..as sil't, 0 ~ :8ølO'O iTillì, r~.~ua~11;l Ùíldcx') l.a nlIn~ t,hicl:;:~ li~:;}1~~ ;?7~ij it) zrGl1o'iç~ 'broi¡m~ "PQ02~ tQ goo¿L a1~a1n dt~I1: oi~~_- n(rr:lc:Mc.aj~cfx~r·0crv/c,;-. ;rricaceov.~; micl'o:f'c~J,:1ilo a-~[;e:;:"1";¡,. 311 'l!¡¡" 1;I)07¿~i 911 41t 4(5 Shaly Clä¿¡.f~ l~~gl):t to~~"a~l':, ncn1'=>calCë2.I'~O"'û.s~, micac~ot',$ O! et1 a,s a"bov<:" ::.i. th 1·3iw!.:Jt'3 m:1,nd~ 'V€fJ;'Y :í?irlC~ :srð1l0W~ fair Gil !!J'î;äin Nicrofoa:;ils :ra:;¡;>e<; <:,1 ~ "Jl~'''l' ø_~!:.;;. . .'~~J' Sl1aly C1S,¡l:; light g;:B-:Tr mioaceou.sa non·~calcarOOtl~ a"tl"ealtS ~¡il·t; rfti';~~(~fof~s1..J..i~ :rSt?9ø and sh2~1:'T clay: $11~", l:tr~}Y~ gr:a?:"l1' m;.. cacect'i>S~ no:n~ calcal'eo¡;¡'s~ 1 ~ 5í1 Sands1jone, 'Very fine, ßil ty, t11i1'lúed.'J.'8d: è'JI~!ll "r~sÜ"'!.B'i d$~·k oil, dark üro~m. A sievo analysis8Ð~WB the follo~fÎing n$.l"centages of f~a,in 91209: medium sa-ad <+ 60 mesh) O"O~; fine ~'"ld (+120 mos:h) ~)6;&~ ver;? . ~ ( ,¡; ~) n rY1 ... # \ ~n 4 ~;\... ~ ~J f:t.ne gar.(~ +2~;Q mð3i'l ö2ð6~i:?;· a:Llû lTð~5 mes..G.; ¿lt~., 6io; fi:nø 211 i~ and clay (...325 me a11.) 15 ~ 23~'t ! tl thi 3 and. especially in following analyses a considerable amotm·~ of the material c~u.ght on t.hi3 :830 m$8h~ and ~t!ra.s c01::.:nted as very fin~) sanrl i 9 C()!T:'-';1t:;Sot:l. -'Jf' CJ..S¿7 ~md ail t ag,r,;raf.8.t;l38 tÌ1at~ hÐld tcgs'hhsZ' 'i)~t '~aZ'~v ,;tuxl other ceme:nt~~ng j!Jat·3;rial~ cou.ld not bê se¡,pa:.~f!..ted ·~o indlvi&:~>l ~ains. [';(icl'ofe asS. 1 S ê:!,"b\3ent<> s:l H¡y 7 Yi:311ov;~ n()n~CalCal"!llaO!J'~$- o t 311 !n:lie:ï:"lamina ted Zoanr..stone:, ve¡:~! iine~ i 911. brc'þJ11.~ fair oilstain;; micaceol'..~ fair oil stain;} 11011~ea:tca7¡;G~)1.1.;9~ micaú,s(r;..-1.~~ ;:tel1~'vli 3h. b:rOV.T!10 .~ø :te~..~ s~)ac:lmen~3 of (;atld.I;~ D~ :De ;jCl"'t'~ Y) ~~ji OX). ,~_......~~..-.-.......",,~.. . . lOOOS: lO'O¡¡ lOìl)t! 5~On 115" liB!! lf2~~')'V:~,~ 29~fOo;;~2980 1 ...' 2900-29707 ,ro; 295Q..~æ60 " ;3[, 29~29roe ,,:; -~1 (.I."" 2935---2945' ;""..') ...~. :,' 292;3... 29 3.? ¡ 20 ~jill· :~1:~~:£;1 P~~1! 20 298Q.:.2990~ 2990=;Ÿ:;OO ~ ~?[1 0000-3(}lú~ ~~s~ lOa On ~1J () ¡: lOa On . . ]ill19;£.~1.:912~Q~ ~il ~~ (~~,325 rfH}Stl) ,-; 1,1 ' --.111' 7'ð j;iiGl'ofo~sil ß~'bsent f'.)~ ;'}~4. ~ ~V~ $" "~i" t fine silt ana cl~1 (~325 ffi0ßh) O~11(1Sb~ÙJ;- silti light yellot1isl1 g;¡:Ð;Y'~ micacao~~ n011o<> calca:recu:3, slight oil 8't2,;ln 3~ 2tl Sr£!.ly s1.1 '11~. H ¡q;ht YI':Ùlo\.'1sh 'brcl'iJ.¡'n) non.-c3.1ct',::rem.~'1iJ~ slightly JTIicaceous, laminae dark bro~m cl~fŒ not c:rcHH.'J1Jaddød.. .&;(1 co8ol 'bed at "bo ttom of sec1;;lð:D. o ~ '(:1 Shaly ala.;'! ~ light g:r::J~h 1:';:1 th s'!;l'ea;i:;:s s11 t" m:l caceotl.¡)s non~calca?øous 3cattered minute fl~~~Ð caTboni~ad rnaterialfl O~G{ Si1 ii, wi 'b;1 sha17 cleavage, ye-llo'-,.....b:vo"t'm, ,g:oQd iB1.;¢i.:lxl d~~k oil? ncn-calcareouß~ micac00ns 21t5n S!:la.ly C12..;itr- li;s:l1t ça~r,> sligh1;ly calcareou.~ 31'..g.tltly micac$ot1.g.;¡ v!ß7r'y faint "-'f.rt;:f."oli f~roi).s OdOl~ tOt·a2ia "bQttom of gGcti(}r<i.~ lenticløs silt, ligh~ (:ÿ:s,;y!; 'tl1¡"Q1¡{~1z.-. o~;rt 0 ü~e!l Silt, ï,-¡i 1Ù 9118.1;7 cl'Dè'wage, i}rO~¡)ll~ non....calCf1l"0CT.tí:h t,tGoll 1:rta.in ð~J;>k oil ~,)~7t1 S~ba.l;r cla;:r~ 9il~:~i?" lig!yif.; ;f0l1ol1iE1]'l f!j?g:y~ fa:1¿1.-~ odc~ oil, 'vi'!)':!:':!" mieacøc:usø nœl·~c~lca;;:>QOUS 1"2" 5ilt ~l;. 1.>:.1 snald- .-:~lea.V',f),g,9~ yøllov,kD¡>Ok1'h good et~1n d.a:rk oil.) nQl1~...cc~~lca&')ao~s:r mic.acaCtlS f>1:1to~()fo~gi13 ¡~):)s~n"~ Sil t 'V1Ÿ.~ t~1 uhaly cl~(?~våg9; ligl1" gra"y \~11ien no toil stained! \;¡j. th eH~c2~).oF.;~1 lðmiMB aIle. "beð.s up ·~:;o 1 \j tl11ck 3}laJ~~" cl~$t, liglr~ to [~0aJ.:'ilill f::ray~ nQi$¡~caj..~ crtrsoU~, fftlc.aceou"s; nio st ax s:ll t~ i [} \:1el1. G)tair~aa. \!I.;;! i;11 darJ-= o:!l~ yellcroie]l "br~~'~n to d.$lX'1~ t1~Otlm;1 :fria1)J.s¿ non.... cäl C8~~t ~o\'..-øJ; rni C@.fCr3:)~.¡1J l} 51 (~1le allalb'ë"rgi ø~ cQrtlp~) 2l:l ~~j~ ~rr:,?le1 2r,S{þ3fJ(}Qit ~ :riJ!8 ~na (~i'~l:aO :D1ê:GZ1J. tra.ce; VtØifJ "~1 ¡'''''2¡"¡ .'1.,) G- ,,.,.-:i ..,¿ ¡,''',.,~ ~'\ 11 r(~ J:~~lé ~m(~ \t~-d,-~ rUS'9.:lJ '¿)nè§;;;;; ~l,,~ö \"j)ÞJ~Ù me£}!llJ ~_¡fId'í¢; "?:'"':'1.~ ð4"'" ~..,...,~ ;")"';i .......it .{ ....'?r'"'" ~~ f."~1' .1"Ir.'I ctØ J.__',.-J"&.~~ ~.:b_ () o,:,).,{i!.'..J" ~..,,,~¿,:y \ ~+,~.::Ã) l1.¿Ø ':''à..} ,.,~D~ (:'$;:) t·'I~.c¿)O'£C agil s ~t1)~e$1t~ ~"g Or: !!1~t$r1::eðilø~1 811 '€:~;\1 f8,j¡,;; -to è~octl ~t~ai!!. d!1121t 02J.£¿ mS..n:. caCGOtlû!. n.Q¡1~e:f91..~..C.~:;r8ÖU3';:, ~;tÐJ.!:l sl¡:':tl.ð'" c:ta;l;, ¿,!£1~8'J"~ ncn.~.'\calc~t¡1:~{}a.Ë1; Ü~iCi1Ci301j.~J 1. ~ 3n 311 t '~Ji t]1 SJ1,'3.1y (~lGû.:~rn:'~ig(l!; m01irun to ðil~k: l1rQ1.'â'J';i tic·l1 sta;1'114,~SA 1:rJ. \:jh d1:lY}-i: o:llt- nO¡l~c21eaZ'eo'ilg~ mi{~~c:jOiJ.g;,) ;:~¡;"1:1~bl~:Þr J"a.7.l!SI¡::2~c'3~&:I~ {.ìl~O,{¡~1. c18~~l' 2. ~ 8f1 Sl~aly clz::'iF ~ s~']"{;Y: ligh':t gra;ÿ', micS,.c'8(rtl2;r 11:J:t1.~eaL~~ ca:rGQU3~, faill~} ell g'Gail]' :Ln top st} ~t intGrca:tation~3 s~,l t s:ba,lt1~¡ li{?;}:â:. gJ:~8Y~ !J.o;1.~et-ll(~a-rcc~1;i):~ !D2CaC('J012() O~'7¡j SiH; ¡'ï~OE()." 1, v 3(~ Lime S1:'0110~ 811 gl~t1.i.? ,c!tl C~~GCD..ß ~J;t)~~~Y a.rr~:ll1.aß0atlBJ iD. 1 it~]·'yt~ G'l) {;?..y ~, 1. ~1 {~I'1't~~ .g;"i~ [fil ~ tG1J~ ~~ 1;j·Ø.ð~ ~,n.d'ì.:¡¡"atø{L () ~ 8~·j Si:t'~ tJi t:h Gl~;£.tl;l e.P...8(1:va{~Ð.:. lif;lrt ~~~1.~y ~ rl0n=ca:t(~J;u.~:j;)o¡he, sl~~fghtl¿l ln~Lt3s'c00V.13 3;¡~ir; Sil~'b vl~11.í1~ 8b21;7 C:l6P¡,"~f'a{:;s: yo1.1o·{:} 1jl'Q~J~n 'to da.1~!~: "'t)TOT;1fi;e "¡Fell g~a...~.>'),~ Y.1·'j V-)''')1~ Ofl' SiG';7~~:J, .Rrla17gi~~. e;:)1('?~~.·· 't :':7";-:~:~.(J .:~:.~.'.'...'::..'~',_~"~:.'. ~"~ ,...~:~, ~ ~;,< '<0 v.....- n10r:L:Lurn ea¡1,d. \',-.cu ~ÜGS,t1) $)<rè1.c9; :fine Gz~nil (~.lZ0 meEÜ'.lß 0.06:&; vel~Y :fin.{j' '3·~.l:.~1. (1~2~{) TIl$sh) 4;:3'1\~; GiJ.. ~j ('r325 m®ß:r~) 2-3f)~2~~ f:Î..no 85~113 ~'<1(1 cl~? (~325 rn@81?j 2~i9(5~ f~ic~c·fo~sil~ £1,t:s'~n-::;_;; t:!:Iß'.-=, 3~)líJ.sÞ302f} 1 30 3Oro~2{)2û! ~~ 30 ~J...204ù a 1.0? (}f-i lotO!! 10~On . . ~3 :- ::;:h'GJ~~v ;;~ler~1/'8~~gB;: li1~;]~!>'b .~-. ':',-"~,.ì' ~' ~:,J~. Jr011v~'¡i Gl"l i}:fO'l'm~ -Joç;~~~ 1¡c {~~'){)Q st-r?..in Ôß.l~I:: rflicË~ð:ZQ1~..~ 415u Silo:; \13. '~;h gl).2l1~f '~l.&a..r-;!a~ge, lig:lrL'rJ g:J!ay?, mi(~?/~oct~Ë$1' nOlÎ~f>'aC~1,;:.ca:reot;s~. ~)CCß~ S:lO~-l~l i:-;1~;!.~;PC¿3.1¿\ tj. OTIS lif~l¡t {{~ay 1 ~3:1 Sil'¡¡ t1i th Sh~11y clea.vage, light j'~el1owi sñ 1.i)t'CMl 't,., medit1ffi 'bro:¡mt fa.i~ to good stain dark oil~ mic:9,Cec:;.w O~l~ Shaly clay, light grs:y¡ non... calcarsoi13 s mic~ceou.ø 1'! 3rt 8i1 t ¡.¡'l th si'.a1y cleava,?,9, lig.¡"1t çay where tm.$t2,i!H"¿;,~ yellowish gr~ to brown where stained; mic~cøouø !lOn-c8.1care0í15r 1(1 '0001' s~ain1' 21 \'1"011 stalJ;l~iJ.~ ~;(! 1)001' sf~edn, 911 "1011' ~tainad HicZ'ofossi18 absent. , ~, ¡! ... ~ Og5'¡ O~~¡ O!?fI cÐ..lc2~eo'Y~1.8.~ :niC2:..'C·f;O"D.S Shaly clay: Ught Shaly silt~ light 811 t$ ð2Jrl~ mtJc;,~m, Sbaly clay; light micacøou.s 2~11(1!nte;¡:1)odded shaly clay~ light g-t'ø::!t and. j~i1t ·çd..t}~·, gþ,ø,ly (~leaïn3.ge, la-t'G0:!' ligl1'Ì1 gl'ê::¿¡ to c1a;:::,k '~'}:rOyf:1h good .~{) no stain¡, SI!1àll f.l8k·a~ car'bonaCeOt'IA:J mÐ.:te!·i:~l on somo 'Partings lj~fj SiH; '"ri.th sra1y clea.-\tage: ligh'Q brownish g¡:.~ay~ :ta5,jp stain~ non-calca~eQ~s, micaceous 1"5': as above:.> light f7a:¡ ~rlth yello\,ïish tingé~ poor tc n.o ~rta:,!l 1 ~ 10('1 as ,r."boViÓ" îtl011 9·~a.1n$d~ ;11 th e~~k oil, YEJllo"!ù 1);rc,;;¡"i} to daik "h¡>o~m., fHaDl~<. SievG ana.l;¡{13i1J¡:, ~{Q29ð g mediu.m sand (+.00 mO\3h) trace; fin~ ~9,nd (.t.:<20 me¡:¡h) 0.52%; VêrJf fine.san.d.. (+.230 me~h) 52..0%; @:D.t (40385 mesh) 18,,3:%; f'i119 3:11t and cla.,y (=.32':5 meg11) æ~4% Mic~Qfoasi18 abs&nt. f78;Y: highly f!;ra::¡, higli!.y 't;¡el1 s'~a:lned f.7 ay ~ hig]ûy calcareCH1S, mic~¡,cøcrG;.~ vii ·tI1 d.ark oll~ :t~1~:tal';ilÐ ca.laa!'~~011\B¡: 81i gYi1tl¿i' Q j 4" Sax!(lstoi'le: ~lHX"Y finø gr8Ii:tlê{1~ sil'r~y, œJ?I;: (:.'}j}Q'WZlf¡ ~¡,::11 ~;rÌja.infXl 1;;>i th dark oil ShBl~v <:11a,1: lit11:t~; &~i~Y~ sl:1@;}Y~ly ca·lca~{J(~()l"'i';~~~ lnic$';~ ceous~ ~~th laminae ~ilt~ light gTay~ CBlc8r50~n mi¢3c0o~3~ fair Qdo~ oil !n'i;~:rJ.~?..i1dn8.{~G{1 clay and sil ih yel~lo~r:;~ s~f,~ 1~~Q~6n~ PO()¡~ to good i s calü2~9o't,'l~:;~, m1~ca:~~o'ª3 Sil't ';,;:\, tJ,. s]~ì1y ~_;16;:!1ra,ge~. ¿srIt bro~~n~ \\'''\911 st1.3.in{:}t1. ~11i '!in dark oil Shaly olay ~ light grz¡;¿¡ 1 'JH.ghtly eal0al"I?)C'l'L:; 1?fl1;;:1:1 larnint:-1.o ~3i.li;:. 1:1~g1Ì.t {~:J!'!:lY~ ca.lcareoü.G 5i1 '{; 't:~~:. "t11 a!;.çtl~t -©,lea:v'agGt b:rOÙi71~ ~.1ell ~rt.ai11ø\1 ':ú5.. î~ll a~~~ o~l~ mioaceous 110': O~£jP ilello1rïj, all g-r:;),,;l :rta.:ì.¡1 (1a¡>}:¡: oil~ '~)o!"1. \Ji;,.1 gilt O~2!1 0'21; lJ5" o ~ z!: S11al~ÿ' '>~laY$ lJ~ ¡gl1"t g;.~a;y 'tvi tl1 ~1el1Q""¡;Ji e:h ~~..ng3, cal~ ca~e011r:j <::".a.9~ . . 5)8\) ~~}1 'Jth"'~I,~'~""-= {} à 6~·; d:t3~ t "jJj~ ~(,l~~~ C}...{)a.Vag0~ lig:ht {Ç/?:"y 'to ~7E311.fJ?~"'¿~,ei'}" 1 'D~g:r 1;Q :,f\'9..~-,z~ !,rtt:.-iÎl d..:"1·r1.'1: oil, l1.o:ð."Ycalc~~r30"il5 :l. ~:1 ~1 ~lS ajo·}-:t~ tlq:,"lt: lJZ"'ot;m~ ~1¡'3:tl z·~2~il1.9d" 1JJi,..tl'1 ~~l;: 0:1.2...) Sic-v-:.::-; ;?J!1~l.!~:,¡~sis; ~')¡;5~ ~ nlt~i11_"1'!.T:;1. 1='~~1~...~ '\' .t~("" ~fj~~~"~ 1 ~ ~......\....1 - - ."". -...._ _Q_ \A ....'{t¡-1..) ~_'C") :;)$.1,." ¡r:. ^ t'?¡^", ..-::0." ,::} l ~ "4 Ç'<'.,) '\ "" -" . of. ;'1 Vl)VQ,()~ ,~.Lnø f1~n.~.~ \TJ.ð..· !!l0rulJ 1;~2~Ce; "';j~'F/Z¿l f:tn.e &::.iJ.~~ (+2~Ò'me811) 63..5%; sil1; (+325 m$5h) 15...4;0~ ¡'5.n£¡ ;J:L'.1ì end 01%7 (-325 mesh) 20.. 6.% O~~f(: Interb~d.ð..etl $~71":ï a:nd cl$~ light gray ~~Q lig!Y¡j ð?~1~lCt~r4'" iøh bro~11 Cs1C2~00US) micaceous, silt J.~s fair to :a.c o:U s;;a;'n.. 2a7ït Sl'1al:;~ Cla~f>1 Ught fJ::ir:h slightly calcf'":l'eo"'.s~ ßlig!ri,l;.q' m1CäC$(.m.'1}~ t,1i t;J lar,lin.a,;r à:nd thin (-¡þ.") tQ 2 em) 'bedu ail t. 1ii.:sht t';l't;.y tD 1:1 ght yello\:ïi 3h~'b¡"o\1În~ no tð fa.:h"" oil 8tai,,'1~ Cazaoonaoeo!.ls :f1ak(!S or£. T:9Z"t¡!llgB in l.J;'P"P9J: ~;: .:; .. 1!)6~ SÌ'oe.1y clD..}>~~ ligh'~ g~ðY~ C~J.cWeou.¡;, v(t'.'!¡Ì1 oec8,~i¡)n.al 10.minaa 9:11 t~ J.i g"h~ f!7a;l~. fit1 c&ceou.s~. sl'.gh}~1.Y C!?J.··~ c2:¡;eou~ lV!i~7:'o:roS$11 S ::,~2.Z'Gç 30({'Þ~50;303 }. 1) ~ fY'¡ 4~ot·~ In1'lo¡:tlJ8tl(iod t]~d.~7jjt)tlð..Gd Øk1al¿-l' ol·ay ~t~CL giJ_ .~~ mêc1ivill f;~~!?lY'J calcs¡'1ðclu;a 1;{} llCTh~CÐJIC2Z'érJl1~;}:;. '~!:j o ~6f1 ~l:t~ght 9"~ßil'. :t;,l 97~:t t la.1i:1iTJk1,9 in Sir "t, ~¡li ·t11 ~~¡~-slir cle8;V'ag3~ :rel1ovl è~l~ oil:; ,calem~(jQ11.g1e mi~a,~ê'H¿€3 'i}-.".~ 1 (i (~v J:~ "" 1j¡¡'~O't:JE1;:i B~t-St:;..¿}. 5~6'1 r1a.me ;1'.- ,;;:'.¡~ :ti~:tgt /}t o~£ Cax't.;I I~1ic:rofosgj..ls ;J~£"t$øó ~~';~3 ~y)t50""Z,f)(30 f; ..~ ;'~ ~ l\ f: ..,,} v ;311a13~ ,:a:ta~r a;¡1d (~;illj e.æ1 abo~vG. r~. c;:o~fo ~sil fi (;'C!¡1JT!C1t.~, ~I~~ 'Oil .ft·c.n~'l ttlt~ a1~Gl!ø inter~-.s~l :be.s i;J1S :fQIJ.(,jv.:la{-:;:. (~~ill')act;ob~i~~~;ice: ·~)::crt,rn"ii011 ~)1[~,clc , .. "'<';1'- An",. " . .. ~ "'" _.'....1;';·' -r\ ~ ~'" ....,;,f:";Ctp. "í.' ,;; "",""">{-:.,;;.<i~'.'" fK? ,,?'., ');,"'P' :~i:.\107/; ii~eß1iie ~Vla'wj.t;z: tl~~r~6: j(....'Þ ~:;. A.... {!#i'S1....v...3,,~r;¿,t J..~;tJ·~~ L'··:;.i-..:wa. y..,~;.z.'J .."þV""p _"" ......'J~'.Lo...._.........z.r; ............ .;.;...""".y.... ,~<:'"~::t ~ t'!r.:t.11 .~..'t1«:-\~~""'n ...q,~;-' ..;.';.~ r\.!'A-1 ~11:f:'\·'!..'; """r¡ t:,,1~'J ~:-."'.¡.)(,;)." ~1:.·.·107v'' ~.J:ruTH~j.~ :q'.l~_ld.::>-. tì ~.~:".t.';9 .p...~11 A1J':,r:.ln.._.:'t"'...',' ~f""!'aA:,l'oier'..;jÏ .. ·'5.."...~..:.. .~tþ ,::;1.(:/' ~,j~l-".J"P.~:: .;::.,,~...~¿ ',""~i:3V_· r..:''i.i~..U¡j, ...i_.. "'" _"w ~ ~ "Ì:__ .'~_...... 'J '..._ ~.~'Ç"';'~ ".;~_ v_.__V"1i _ ......,- _ .,"~".,.. ~."..tcð,::.. -:" t-..·'·~~.' ....._ '"'.,,~ RI'"'!-.."_" ".'¡n. ,,,":. ~.. ...........;~ }-"':_':":"'_""~~~,'..i"t,:,:"\.,., ~ 1<..~1'I-'i.: ~ '" 1;~ ~41 .. .... ... ~ .~ .' i1 ~ ,~" "l~ ~ r*..,. ~ l' ~.,.",,-:.; ,. .....;} ~ ...,"v..\.;.!._ F""¡'O~;¡ d:.~~':." ~_....\. -.-~:;.:~";V'_..:.o.-; _._' ~ €~1.S O~..~l i~t;"'?} nQ11'V'-lJ2i·CðtlS J..uJr:l.czr~.Î:tng ~~~~'~jt J..o;,;.;~t.Jd~ i(t..¡VT; :~'l(hlit,l1?l 111b7~tic;a:t~tng ¿:L:t~r~il1at'i0~ 9.Ø1j Vi~COl4.S 11!Dši(,~a.'&~l.ll.~~ ßjs£rtil1atø~ 53~8% ¡2t3ß~.dt;ril ~,I¡~'11.t'311 ·t~;.~11t1.ð..(~s if~,% aarj11a11}~ fI'h:1;1 s;~r!"d.s :lll ·G~'.'le oJhl;.".l)ß2!;oi'·~~1; :D'DctioIl 2r.:t;"t1 tiYT)i~"Ja,lly Col~çill;¡~~ ~"1~ntl ¿(l:(~ '¡::irniJ..9:\:~ ~~o ~-,}"'.0>t s:Cr5.1Je!~ in t1(:j:fè 2~ - ::OOO....:3162v JJi ~:JC7;1 i..1:H:~lG;ª·Y i ø l;:rii.nilar '(;(} -iI1s/t ill C o;~~e ~:3 e.D~)1:rr-J~ . ð,!¡':\__,· (j:"t~ ·..··'1 \î ,,,.... -a ·...C~1·'..\'...(~~t'v~1>.t\ :;:i:~~£rt ~');;.'Y~"~êa..TfJ ¢\·;:"1 ð):3{}Ù ~~,,~.,~,.'v.~.}--.. \I ,~-=,,~."."....~.~.~.~;.':,_.t_,·,~~~.'.~:.-~"·~~.·.;.'.',f.'~~,','...:.:~~.".'. .,"',.'.:;..;,. ~i.j" ';::':JL':~'~ ._""j ¿t~ ::;.:.:~'t :::':..~~:':=:.;_~' _v Y;2?~~~:Jl1':::- i:D. f~t:urtqle~3 :'t'1'>Or:1 't>l;.c~(J ¡~,~{) l:~\JV'~ (I Z162=,31.:?1 ~ :',,::, ,.,-', 5~C}51 $2.1'0 ~1}:~s')lo~ :tlf~'11'~Î lj"~9.¿7~ ¿ù:1.C$.{;ß£~~;~r;JJ n1O{L21"'2.~;el;t i i7.d7.;:.!:l~'f.1~·~;t3¡'~H; 8..~:!d P:,s:',1~©cnE¡'G:){2.1.\7j :f:Llm2-1" a~) ~~3::.. 6 ~:~ ~ (10!;U ~ ....,' ÙD. 1Jl~g],}1;r G:~1¿(}~1;?'BOt\:3;, 2.i'(:~ ';;0 -ry::.~J..2.¡T ..L;:1:[J r:'Ð E;.2"J·;'''¡J::\d;'3:g0:::~';:~f~ r; cž.~:~'"¡ -:2-7 ::~.;,) ~: _....~'. '-:. ~') ".'" ".'--, ,}....~,,', > ~" ,,-, ;.;' ~':'" :-'" ~':'.' . ¡ ~ll~ Clay ~hale> sHßhtl~r ßn'¡¡y~ light to meå:luxn g,:ra::h nc:m- CalCa2:A01;1~! sC2/t~beTê~1 ~.tl1t¿r -oartingG:- flÐl~ê9 and fillI~g ca:ròo118úeollfl mE,t~,!ìT;..al and m~:..ca·ceou$ 3t1?9~::gh '··~icrofossil ~ ~Jjl)-n.él:r¡.r~~t~ l~i tholv(~t as ir}~ ::;ol~e 3~? aôove Lbt~rl':jj~ ?:tl t11 la:rt;er &)!i01.ú'1.'fts of silt.; sand.. j,g ì1:::'e:3ea'~ 1)e'Ìj"{;10en 3400~ and 3i:1ßO~; t"'\ limerzrto!1o gt!~e@Jt t~S ·D011et:ra.t$d at 25({)~ ~ ßÐ 2(Z Siltstdno, H.gh·~ ~a;;¡) íc'lOl't...aalca¡·eot!.6!1> oC6asiom:Ü l.Q.'7!ins.e. clÐ¡f sh~1,le, ffiedh'L!"f) g£"a.V!I> sho~Q.ng cI'o3s"tedtlS,ng '\¡~ th d'.pß t"3 10" ~ la~rGl' clay shale 1~;¡ tI,ick at; .33't'~~; f.ra.@TIaÐ:~ß of -pelsc¿;¡"f.)oc.l ~hellc ~!ld car"boni;zed. fr!9.g!J1Em:tg in botton l~·.. - t'~$Zlt8,litij",1 (ícaTJhm)od) f".i."apTIe:nts ~.n cla,y ma;lii,':lx rnîe7.'~{~t¡;ièd cltJ,y ~haJ.a~ med:~um to d$.rlf. g.tW3·Y~ cal">·bo:n·~ 8ceo~.;.s~ non...c6J.car®Oug~ &'1.d ßi1:b BÎ'.ale~ lig1-rt gr;;"::h ~.oil""'aeulc~~1?(3C11ß'f; f3cattsr-s(1. ~11~?tl1 fI'£?..g11Ien~~ß]·{I Sin£~}~e bedø f)&2 ,""" 4D lTdB.. ~Jläy 1.rloZ'0;18~g T¡rl. Lt~!1 deptllu m.Cà'O f'o 18sil ¡¡; l3ormnOrl. . 03l.£1 ~ '" 3'9t, 6~Or! S~0 ag :?'bov" s:JrCG1.)t dins ~;¡ from Ù d.egt.:'Ð();3 to [) tleg¡-Iðes.. 3~6H Cl~v Sh8J.0~ morlium to lig1'lt g'!18::r~ non.=calcz\J:'0011g~ 1'31 i &'1 tl~r roi CaC0C\.1.s. l ~,l (I SaDe as ,"1bova~ sl:l ghtl;¡ ca,">bOl1..~Ceot.,g ~li th Z:¡,OO.u1ØB~ lenaes anti. st¡>~~ks of Cl~19~one" light ~atVish Y011oH~ non.-calcP.Te0l2B~ m¡d r:rtl"'eaks ail t ston0~ sardiy~ ligl11. ~~1) scattered carbonaceous flak0s~ O?¡ 6r1 811 t shale) 11g11'& gray ~ nc.m:»oalcaz'eOt'ts. L"liCl"O:fO 9911 g eommor;;" Olay s}1FJ.l\:!: mediv..m to H.ght gra~h non-cf:llc~.Jt'eottð, di-p 5° 1 'jcc&siop& laminae and. lø.."ì.ees of si1 t ~hs.lø~ lig.~t E?>~.w" slightly calcweJov.9~ micaCeoug~ and '"iJ01"Y ra:re ca:r1:JonaceotlS fla}:es a.nd "Dar·ting-s~ ri1iß!'o:fossi1.~ jßOP_~On.,.. Li tbolo,s"'V as in cor'o 36 e.bova~ e~emt that no lime.,. stone was noted. Sandy strata a:t'e present from 3240'1 to 3250: and £ï"oD'l 33751 to 3~9ù ~ " Benton.1 te oècUZ'ß at 3285'; .:r!!ocez:~~ pri ams aTe common 1."3. onè di teh sample a.1; 3:32fj '. From Cora 35 tl1'tr19.l~dt ,the beds axe fla:¡;1.;rlng~ e::JtCs'P'¡; for oc~a$ion¿l cl"o~,f!:H)(ltl:ì.ng vihich l"JÐ.e di;ps ~ to 10°" Variable antl gradt'ß,11~t inc;¡;ea!.d,ng ð.i-ps ha.v,ð 'bean r0cordètl 5.n lOweI' COTaS9 C 13:~ )~iL1e~'"jt·o,:1::), medittm 1;11J¡,e~gTa~r ~ sligi1tl~!' ,aT:gil1B,CeOt~5~ ~;M111 inéb..lS;a t~d.. 9'917 Silt shale~ light f~a,y, ß1ightly úalcG,reo1..1s~ 9î.igb:\i1;V miCaC0CUG¡ mOd$Tately indnratede Scattered pelecypod Shèll fr~~enta; ~~1 scattered fl$1;;cs ogr'bon.s.ceot1.s w.a.tel'ia.1.. Por~in.ifêra pres0nt0 ,R~~~~~~~t~~~ . . lOr! ñi t(~!l lO~ 1011 l(H ,-' Ditch lot I18oc.v:;;:ç:v- """~\'r¿''''~'-'''''''''''''',",'''''' 5fS7r~35a6~ ::'.9 ~~:3B6-35'?6 ¡ 3Zr¡6...338ß~ 313 ?;36~3376 ~;:7 3~5ß..a3Z;56 ~ "'~ i:)'t...~ 3181...3356~ 31?l-31gJ.~ 35 P~~rr~h Gorè ~-=-'AøV.'" Q,Q~ Df7?; ~¡.; 11 ~~,..:;h 358&-3'1'('6 · EJO 3776-3786' ~~~m~~~ D1 to}') 9' 3186-3976' Ditch 41 3976-3986 · 8C4G' 3986-4140 · ~1:2 411J.Oo..4150 · 4ls-..~~t!.f; ¡ .t3 434Q...4350~ .t135O=454¿} ~ 44 4534...4544j ¿J..5 "154-1-455£.1,9 465¡{-4598 ~ Di~ch 176" Ditch Bte" D:l i~h l'jCl1f!) a~3:¡ Vi tch . . :C~r~ flc~i n ·ij i ot), """""~;_,,..,.=-~,~,<o;;!..'"-".o/'.} 11 tholog as 1.n. Corê 39p Sa"il0 aÐ above COTe 39 t¡¡'i t'h occasional laminae and thin beds light {!l:a:¡r sH·t and slight increase of caroonaceoua materiâl& Microfosgilg abtm~~nt. Lithology as in Go¡oe 'LO. LO,((¡'"013t microscopic ernmon- ita ahall fra~nent found at 3810¡p Shaly clay. light to mediu.'!1 fØf't~¡, no:r.¡,..qalcareous. very s11gbt¡Y micacoous, with occasional lma1tlaS silt. light gr~, PYTite nodule 1" diameter a:~ 397S'.. Hicrof6ss:l1ø very abWlClant.. M. tholog; a.s in Gere 41; sand.v streak at 39S0e e Tr.e base of tIle abÚ¡'1.dant Col'!fille fauna. :1s in thiß intGI'val; microfossils a.J:>S rtfIJ.ch lASS n:u.m~oue :t:rO!J1 thi E! -point dotm~rds.., 2~6U SJ-.i2ly clay, light to msditm1 ¡pray, non",c.aJlcareonß, ølight1;r miCaC-30U3, ðl1€htl¿:~ silty, :ral"e lMi:1MÐ a:U·t * H. gñt g¿'.~'" 0 5'0" Sbaly clay, múdi.:tm g:a.yo non-ca.lca1'6mJ.!S~ occaM. anal carõonlzêð. na1ee~ of 'Pls.nt rema.inz:¡ on. '\"",¡;..xtingsc. occa~ló2lal laminao ail~. li~~t gra~t non-calca~90USo Hicrofoaa:tlÐ :ralativ$l~r :1.'::;;'1;].. 1.1 tholo& aa in CCl"ê 42.. 1.Jo....."S~t .¡.~Øi7~~!!~"'hLt.~ :fragment at 42::103: lot;est :fi9h boOne fE'aQTIènt a"\~ 42301; l/sr¡ :}; 1/16" i?agman~ of daHc9,t@ o~.t~? shell of¡noc~~ar~~ at 424úQ.. Slw,J..~ claj"¡. öcca.8~ona.l1y 5:1.1 ty, madium to light gra,"I t n()n..calc.m'e()uiÆ~ occ1¡bsior.all.v micac6ons, fissile in ..,~~, i'Ji th 'b1'rl.n (und!!:&? i€:) bèds âL'1f.l . - lari1~,M.~! 9M~f d1t, J.i~~bt fJ:'a~l: m:1ca.cøona~ ~~"om .t1344~ to 'bottcmo Di-p s'"\')l')Z'o¿dmately 5°" t:YiCl"'O'" for,iJ5.1 ~ rarø. 11 tholc'&V ail! in Go:rë 43 êb(}~7Q. @'Ð,du.al1~t Trom common at 4400s TIiotit~ d~C~ea8gS to :tm"e e:t 0000 a.. SJ:!al~r cJ.ay~ o{H':agio~).:¡J.y sS,ltY1l medium ~rq" mica... CaCi.l9: non-cal~areon§1I di"p fl' fo~ 1; ~ increasi ng to 10°, fa'!!: t.b;, reat of tho core. !tPoker ~~hi.,!¡ cleava.gs. Hic¡>of'ossil::; are rare, "tn.1.'t include the :highest. 0i30'\.:LY"rence cr1' lo~I!)~" lTan"!lsln.1l-: (Zona D-R) fatæ-ä. 1.1 t!-lolcgÿ" S,3 1£1 C O::f'ê 45. ...12... · ,~{) ~1698,,::o41·708 .~ 101 470s...4900J Di 'bo.b 47 4900-4910 ~ gQO!'J 4910=5078 $ :Pitch 48 5078-508Sg 7'8" 508~5280ij :Oi '~oh 49 5280=529'0 a 7~9( 5290=5608 t D1 tell 50 5480=5490 ~ lO~O¡: 098r~ l~On 3QO" 10gfl 0°3" O§!317 :3 0 4/' ~~STRICTÉ'6 . OFFICIAL USE ONLY ~'Ið !P'W" fÑ ð :-tE!:3 ..................."'......"'................... (]:) 8~ '1; 1,;D.·t y:a:::eJ..~}r compc;~1(: I,i·t:holOt~ a.s in CO::;Ð ··16$ Sl'\sly clay as in Core 46,~ Î\:licro:tc. 9f:i~..1 S ;~~:l:r,a? L1 tholo¡::y as in Core 47; pyrite has decTé3a~Ðd €1."8,;:;p ually a.'1cl i a ¡>are below 49101)0 ,Ô41 inCrÐ.'9.0S in "VJaS not;cd in samples Ú'om ':'l-Çj90'¡ to 5fJZ{}~o Sh<\ly clay f ffit3di'l.m:-ð2.rk g¡:ay, non~calca..Y' \JotW~ glightl;¡ micaceous, ~ood ::POk'¡:ll" clliyli cla~wa,ge~ Üi:0 variabl{,;, ir,Ci?$asing f:rom 10 1;0 150. l,ic~!'o:rJ8sil(1 absent. L:1 tholo@:y as :1n COTe 48c Sha.ly clsy a!3 aboV's~ di-ð8 'Va!'1.a()le (}~,lt)c'. fa ~g:t13 a"b3en.'tQ ?-1 Ý.. C~:~O;"-'-f Li tllo1o{~~ af3 :1:1 Core 49 B,boVÐt) Sl181~r !.11ay f m~\.1i U1l=d9.rk g¡;:a¿¡ & :r!.o7.l-ca.l,~~a¡'00u&" m~.= CaC'9Ct1~" -pcke¿¡,> chÁp cles,ÿaga, ".,,611 ina.m"ate¿L, Shal;r $:~1 tf! a~Ë;illaceot;.s~ '{;Ii tl1 st~e~1'::G vex-¿l' fi11~: f!Ð.nð.p Ltght €pay, nc.m.-ccl.caz·(3(Y~1;J~ :1Gll i:::ÙtU>2.'Î;så" :I1~r.,~1.1 @1[10tL,.Vlt t~¿.:t)bQna{;~~ollg mo:terial e.ryj (:;2:1J0711 z::ad maca:ra:~0d pl~tilt ramaiTI.~ on "pa2'ti!lg8~ :taiz' odor "pal., ya:nC'!d en.t" 1"l'o\i..l11isY.l ;yollo~¡ l'GBiflue :l:n G'':;l.':J, a.t 5·18Z:¡ . 5ha1;:," clay $,9 e;hove, and thin beds (u~ to S!1aly s:tl t .a~ a\bo'Ve~ '~,¡i'th ;r·;911o't~¡ !¡;1}J: a.ncl :ro in CCIÆ ELt 5i185t 0 .~ Sha.l::ý cla.y SDalYJ:ll t t1:1. tl'l e1l ty j)a.~·t~~¡Àg5:~ .1 ~~ 'iJl1iclt) . a$J 2.'bOV0o as <'?,bovø" SÌlaly f~lf~Y ~ mf:!d~:u..TI1-¿tark ss'""¡Jay', nor:,~'~2,1 eft!~f.,.10't1E~ 1111,,'0~~l'~~ ceo"'~at \lsll i}l0~ur8..~Bd~, 'po!r3:r c}·'ð.ù clE5a.v.ft~~t-;;~ a~·ces,,"4 ",130",:<:\.1 " ·~m~ ~fJ-," "'1:">(1 ""'J"")'O ~.;¡ 'l"U7<': '"""', -1 ?~"''''' ,,,""',.:¡ ," {""') {.;{) 1. r, ;;C¡.s. .!ò"'_c:i"< "".._~. ";,,."'''''.......XJ """'þ'4- t ~-'" "'I3.....~o..., ........¡.J.t.... .... .....'~ v'; ..,ilQ_,",i;;) '>, "~;. '-'vr "oc" ~t111cl=) :]11 Ÿ1:) ~?.X~{-;ill$.·c:aou.~~ li~;IY~ {~¿1~8~.~~ lTIiCa.CrGOi¡S~ ~"¡i~i ~tl1 1'19..cer0J,t,~d C22boi1;" ~~v;d. 1-jla,rl"~~ :;~~.mt3.:1 ¡'l·T) "'''' ,-,,~,¡.,~...,:... ,~,.:.. ~ ,~,~ ",1,,") _:""\. <:to ....,.,La. 'f~k...:¡. i:I¿o1¿E:;0i) ¡.../,bt)Ú v8..j.·1.~t..Jkt}$ ;~~ ~ o ~ 1 (¡ Sha1.:v o;¡:Ut ~"lS aboV'$. I·~1.crQfoSð'.18 a1Js\en'·~~ total silt ô..n.û. a~Jla.J ,21 9t~!} 1 ij 3" Shal;? c:j..i?,.Y r-1.t3 a1)O'Vê~ O~~~~ø Shaly s:tl t éì9 .f1,bove: ;:;^t:r~v;v (~¡~loS'Ðd. e.x r 9 aiéh.:~) i D. CC:. 4~ at 54-9:8 li ù 7iJOU S!laly c:~,.$.~ï a.s abovG~ j'~îi til Cél.:r"1:)on.iz?3d E3acerateà ~plE"Il'" rsmain!3 Q~¿ t~0L1e 1'art:1;;1gsg ,~?"(ðl1o~,¡ 1.;l.lit y~11o~1 T~~i fro!;] CC2.4 t0~r!; of sil,ty lamina~g 21,t B,/J:95~~) O'6~ 5haly s£lt a~ aboV$~ ~11t.}ro:foasiln a.1)ssn'[;: 'total Biil<tý êt.nd ?3~....nd~ OfJgfJ¢ ~1 '-'-- 549(þ.,.5:500> 9~On 7,êl..l.. () YE;111 (:,:"'J = , ?=a. d:Ir""'" GO.1.?ê ."=:O"=";4'h'~ li~!?~Þ 52 5500=5510 53 5510~5520! 54 5520-553û! ~~ ~'\..! 55Z..o",,6540~ 58 554(}~555C; J ~~ 10 ? O¡~ g~6n ÇJJot! :¡, ~ 1011 E.1:1 O~; . . Døacrir¡..tïion '*~~~~ O'll! 8;111 ~ 4, .. £:l¿¥i ðS above. S.baly Sb.aly cl8.&· $AB f:lbcv-a~ l1B.lS yallow ù\.1...b f~nð,. :~')e sid'?J4 in CC1¿. at 5&Jl~ 1$ 0;; lOt1 5119.J..;r šiJ. t .as a'bova; ;1$110111 C1..\t and resid:o...:;¡ in CÙ1¿.1 a'¡¡ 5f.ûS~; po!'o3i~y 16~11b at 5&..191.. Oi5(J S'œl~f clay as aôove" O~ 3f! Sbal;y- silt a::3 abovï9o o t 411 ~1alð~ cla.y S,S al)ov€1" Hicrofosail ß absent: total nil'!; and sand: 1 ~ 2fl" OU5f: Oil5" 2$3" Osgn 2~af oa51! above. above.. a"bove~ aljO'iT0. a.bove" ."1bove: S1la1y clay as Shaly f!il'i; as Shaly clay a€..\ 81w,1y silt as S1~ly claj7 a.~, Sbaly silt a.z at 5511't.. 3wact 5'ml;Y'" cl~v as above.. HicZ'o:f.'ossil e aOSollt.: to'¡¡al ail t f.1nd 3and~ :;r':3110vp cut ;1ì1d :residue in CC'llJ: 1~6(. 2~O!§ 033" 3t¡n O~ 3f! 1~6¡1 û~:Z" 0'8(1 O~8tì Shaly claya¡¿¡ ,'3.1>0'1113.. SÞ.aly [Jil'!ì .?A3 a'bO'ìi';3", S1'..aJ..y clay as a'b{;ve~ Shaly $i1 t p..f!1 above.. ShaJ.¿f clcv~ as ,abovo" Sha.ly ail t as ;1),110\;"0. S'¡".aJ..y clay !a,@ a'hove" Sl'1aly silt a.s abcvo~ GJ.:1ghtl~l calea:r(!;ous; no CL"t'I.î, ...."',,"".... '."..", '" L...,. ~ .) "..i3<f'"' ~'" ""ß1, "'~ :;:;r.:.""""~ Z<:;¡,;U:.o £}:.,..",,:W ..;,(Ù.Voi>í3<l ,;a",......-U9 ~J..~ ""\"/"'''1 "",'1.> ;......)~,i ., 0' 8n C~a:v t?,Ë\ :above. O'3U S!wÌ;v ili 1 t as abovoj :higl1ly ealcm" ef.rtlß~ 1¡løl.1. l n,,,. ð:w>atet1... rJlicrofo(3~!;5.l.e absent: '~otal f.rllt and M!l'J.~ 1 ' 'i.'t; . " {) ~ 11 n Srmd,gton~r vør;l fine g,,"a:tned, 'Vcr:} a:rgil1¡:1ceou.s~ light g:r:ay, caJ.cweotì.st. t<li911 i1'ltìt1ì."at8d.~ wi '(:,h abtw= dan1; blat:;1-\: and b¿-own ca¡obonized mace¡'ated plan.t rem.a;t:ßv on. \')a:z'tings; ~?l"'ai¡.la m.~e COiTrpO sed of 8ngiiLaz> 1JJli~/1~e ~~.n~t c1.Ë~a.:r (lUal~~iz ~1i ~~ll occa~io:t1,al :fl€ili:~~s of- m~\1seo1:i ·~Ð æl& a ~èt~ ~..nf~lll~~3.r ¿re11o'tJ' i~z':!airls~ no cU:;:J:: 1"~.o ~1!ra.~·QoloZ'etl l~ee:{.ð:t1.fj (~ta.1;;SA¿ afte¡" COTe ~æ:.r; dried) i 110!'mca1Jl1i 1;;9' leas t1183 5 md.$ atlét þ(ìl.'O:g2, ty 6 f'>'.r:,;(! ~~, M5~~t .\,,, 1'./1 ~..v V" ~v ,. 6illt~ $h~y Cl¿.-lY an above; at 553?'~ ·an~l 5639~ m:e l:~n 'belt sil,*~8tonÐ, al~gil1a.ceous~ vJi if!1- s~~:i~ea:Þ=9 of Vfj::;f/ fin1~,) 22@d, ligl1~.i g:~ay~ Ilo~-~ce~lca.reou.e~ micËleaov<>~;} ~:!:1 tI-'l cccaßio¡:~1. car'bo~na.CGCt18 l~m~~~,a~~ ~jel1 :tl'ld:uratød: [rtl~a'£:;~c.;olo:i"9tl CU~.;~ ver;v nale yellfJ\t; ZA02~~ð.WJ ill ~CD1¿';1 a/~ !553';.1B f) f:15~O"TQfOS'8:¡1'f aòso:ü'Ð; () ~ 1J. ~1 ~ f10 .~~1r1. ~v~>.tl1 sa!Hl f~ntt ~..-:, 1 ~~~ ~ ~.§.........tJ'i$ 1~6g Sll!"t1~¡ tì11t, Ë~.;?gi¡lae00!J.S1i, cecaßiorr,a1 &t:t~edlç1j rJe72Zl fino ~t!~,¿1cl} lif:;:ht r?):~7', non:~~aal,:r;ét:Peo1¡;d~ miÜ~\C00t'18} t"l'i lç,m:l¡¡,ae ~J.;,¿t 'tl1:111 û6de ('.to 1 í1) 811al~t eJ-"t)\V~ f1iÐ 2J:)0 ~TQ ~ G~6n Sl'1sJ..§' (:1£.\7 l";~~tj :!'in.0 fJ:ll ~~.~ !; 1 [)/3d vrzr;l a:2: ß~~ ,31:10797_ o:rt;~~n 4; .a:t ~;~S"~~ :ç~~ D~~rð)~11 ,_"....µ.-o¢'<"".;!;.~ 57 5500~B56'O i 5a 5500-5565~ 59 56GS-5575~ 50 5575P55S511 ReCQvt3¡'Y ~"'..~.~.... 6~ð:$ 0$10" 10ðO" 106011 . . Descr1ntion ~~~~~~.2 r·!iCl"ofossils e..1:H~S!).t~ to~tal !ßil~G a21d 8~w').dz J~~6u1J 1 ~ 1'!" 6he.ly clay", >!Iil 1;7 ¡ medivJn ð2J."'k gi!ß¡¡, 110l1.·~calcare:);;tth micaceous~ w~ll indurated, good to þoor,oker chip cleavage, l'a:re carboni zed maeorate(l "lant rem~,j.ns on na.rtings, t.1i th laminae and rm"'a bedg ('tlþ to 111 t"hiclr) 811 t, light to medium gra:¿J; Hon...calcaraou.s~ ver',{ micaaeou.s. Dins variable. 0-3 0'6" Sbaly ail t~ a.rgillaceous, light g~~ non-calcaraou~ to slight~ calcareous, very m1caoeov.s, -partings ocœsionallif marked by carbonized macerated "Olant remains. a'off S11a.ly cla.y a.s åOOVÐo 112" Sandstone, very fine grained, very silt'", argillaceous l:1ght gca:y. calcareou.s, very micaceous, wi th flakes oarbonaceous matter on "partings; no cut.. Very fa.int straw-oolored residue at 5557': '¡')oros1 ty 7.67& at 5558'. 1 <rOD Smly clay a.s a.bove. Microfossils absent: total silt and sand in ~ora l1an~ 017" Sl'Jaly clay as above. 1')& 3/' Shaly silt as above. Microfossils absent: tota.l sand and silt in cor€! O~3{1 ß 2' 2!1 SI1aly clay as above. O~ 5" Sbaly 911 t as above, 'ii1Î th alight a.mount very fine sand. l'llt $baly clay as above, grading into 1 Q 4ft Siltstone aa- a'boVí9, grading into VSTj f~ne ~il ty sandatonø near bottom and tben into 500" Shaly clay as a.bove 1v1iCl"ofosail s a.bsent: total s:ll t &'1.d sand in cora 199".. oelollSbal;¡r clay a.s a.bove. o tB" Sl'laly silt ~th strea1es verY' fine sand, as above l' a" Sha1~ cla,V as a.bove.. 084" Sba1~ e11 t a.s above.. 4' 2" Shaly olay as above; l~JJ b~d sil'~ at 55811. 017" Sl>.al3" s:U t as abovs$ 1111 th a'tX'G!"¡It3 veTil f'inø santi" 2'3" Shal~ cla~ as abov9s interbedded ~~.th sbaly silt ~g abovo, having a. ra1;1.o of 1 silt to 2 clay.. One fozoamini:fel"a S'l)Goimen: tota.l sand ~m(l ail t :In core 1310ft. . Tñ:res attempted ~o(lu.ction tests of the in.te~val 54BO...55fH5' wero Ul1su.ccessful; 1'8""" cover~ð. ò.rilling !!1'.:ld, no oil or @as.. 131 õ58ß.,.5595i '¡IE <5 (f l~lOtl Smly cla;l~ mec1iü1ìl ã.a.:r.k (jJ]Wh micaceous, non..,ca.l= carao\.'.s. SbaJ.y ail t as e.bove" Braly clay as above, 'fJ"lth la..m:1.nae f!...'"ld "bedg b.TJ ·:;0 ail'li "Ji th small a¡nOLmt very fine sand, light iÎo medi"..m ;~::t:'a,,"V, Vß?-¿r mica.ceou.s-~ dips variable o=[}> " ),.t!\ ~;~ í O'3~ ,ow5" =l£Þ 62 5598-5608 t 56()a-58GO~ 6:3 58(JiJ=581() ;1' 5a:i~Q~,:aOCtJ ~ t~,t* 60(¡O=501t)~ ~35 ;30IO--:·S(j~~\171 (;5 6f)2(;~~~<302-i) i llf~~~"£yjt?;2: 1.0io!l l}i teli t;!t :~H tell 10 ~ (}~~ lCf;'J~ . ,&:S~31..~!~L1911 o t< i~n S}?~~.12t ';j1~1 t .S1e a~){Yv~:. h'1 ~tJ:l 2..'btUldßT,rt n~2I.rcera.tea ~;~;r1Jc:nJ. zed "pJ..Jf111t re¡na,1.X1S 01'1 ·v8..1'> t:l1tliS:8~ 4~?~H S:tf;~,ly' clS,~í"i' TI13r.li1J1ill ..tü t1axJk .:G':J.~t:~!~ m~.C£?~Cevt15"41 no~· - . . ., ~ 1" :~ . '1 . ..;. 1 ""Ö C8.J..C'::-1:í.:~OLn.1S~ ÔOCS"SlO:tlB..5.....i..:t a......:igJ:'1:~J.;¡? 8Ä..:.. "ijY; {i.Lþ ...~~j ) ~ ..."...."" ,",,'~ "" '" :¡..,..e·éh'l"''' 'h? "'0 ."",0 ;O:'~'1 ...'<:\....... ,"''''' ",.t",<I' 6'tJ J- .).¿......~ ~~....;q.~~..t.,L.\t; &,0, ~..:.\.""I.. ç....J......ð {¡ W.,J ~1~....-:..· ,",..'ì~1¡,..o¿'- ~;;ç1.o w.j..t~b !.1 ',J 4 ~, ,.... ~ i" <I. ... ., .. ,,"" f\...7)T}l"GX'1..InE:~e",t..Y' .A..O....p: :!äJ..r ~r,o;~e~ C.f:'~l..þ l,¿J..e·9.~1,..2:~e- f~icrof08ailg a'bsøn·,t& SKißly c12.;y- ~ ð::1rk ?J.'f¥!h ca.1C~tr~ouø1- '11i)J~Sf~ c1.1ip dive "J"¿!,~,ahle" u8t'.a.l1;;r \.;0 rr'Ú a. t ap';:X' o;:dmS:1;øl;¡' í:ligh.t.ly rnic;l.tCeCi'l;\3, 11011~"1< cls}'ì1J~f;e $ t'J!t~11 il1ð.1J..t)a,"bed.~ nea:;.~lJ'" fla;~ ~ loca.l inc:ri~~3{') 56(}1~ i r!Jicf~O¡"'otO ~sil ß a.1;,:~~:a't~ \;ò 1:1. tl1QJ...o~r a.s :l~l~ Go:re ~ 61 ~Vld f12 23~)o'í7e, exc.c'fJt f~;;J'~~ a fillight incrøaze in Band. at 57'";'0 ¡ " T}"1\9 ð.i·i;ch li¡,holc>&V" &9'3 no~; 1i"ar:,r, exes-pt ~"ihø:tg n.O·t8Ü~ f¿;(¡TI.:~ tr.d. tJ d.61,~;11 to tl'11'~ 1Jottom of tho lìßl$ø O~Jc;aSiO~1Æll 2an¿t rrtr:çea1:g are recox"(led a~~ tflei:1:' a~)prop!~ia'&ê ~l:rð{:;]'Ji,:,. Shcly cl~, oocË.~ionalld'" sil ~Î ~ ¡n;3t1J.tlffi da:rlt gJì!~~T~1 mica.eC;)ll£!~ 'V'~:y gl~.g:h1;~y calca¡~t~(n"ls~ 'tvol1 il1(1.l't;;~·tC:'j{1t) ".... 1'ol~:ør C11i1) t~lGt~vage~ ð.i:p 15'>'. O~~caf1ion!tl lærii~:'l~:2.'~ sI1~.1;r 5i1 fS'lI V~3l"'~ï JIt!f.Ls,Ceot!et ~1.. tll. ~~1~'~ing9 o:~t'{;~~H1 Inr~r1~et.l by .:31ral1 f1~aP':ÐfJ of C¿1¡')"'bci1.:1.128tl m!;,c~:rrat0ti ·~)lE.;¡la'~ 1~e:rt:Zti!12~ r;,ficj~oft'$;3:tlg f¡}6sen.~~ Role fta'·Jjry~~;.·tiQl1 fš'OIi1 \i~úr--t·icêL1. ê:1.t f58!3()J ,.., å s IV If)~J i.'! 5 ~ Oç¡ S}\~11;l ~1~" Z~S é.\1)ov.a" ¿1:p .EX)~...65 ,¡:1:~)ªí?øt.n3Q 1 ~ 11. H Bl'laly ~~il ~t~ a::?g:i.l.1:.;¡ücott8, H'i tho. t1tl~ø:~·l~~ ~l~~Y;;7' išët..21d, Tih9å..i t'1r~ r1a¡>¡I~ g::2:;/~, :;;ale y~~]J~ot!J a.:n>1~1 b¿?o¥~~irêl1ow reø:1 clt¿.'f) 1~;,1 'cË\·1caz~'a'Jlfi~:';~: ÞJøl1 :i~nðxcr~a.·Ìí0:1J..: t~t1X"':~ 1)Ol~~.e5~\lr:.1 !J.S;te~~~ø,l ~ t·: ~)1:1 \v~) f!~a~l-? ?O:i"f) ~~:1 f1.13 l1::f~~ -,r ~ ~'j." <1;- .(\~....itA :"! f d~~~ËtI:;:tt1-~e2."J¡ ¡ i ':;"-(~'.':ì.""JC":'",:,;,·~,'..J'.,-~:.'w'~.'/~"."~':".". i.7! " G-()060/ 1. [; ~.J. v ' ~;" T)9:rf.n;.3~ì11iJ..i < .~ ;;1 .r..l_J i?w'Ï.;. C·'}lf~ :) ~ ()fl ()} 5t~ o ' ~~(f ~ j:~~~.~J~:l Ü~La:¿? ,~ ·.c.i'ti:z; ~ Z,;t~, 3:tJ~ ç~:.~t():':l(~ --~ .-. '1.-"". ~~$ 3a ';~, .,~ ~~,~, '" Care De~th Recova~~ ~<'...,,,"'- ~~..,....,. -~~~- 6>7 603()..604.0~ ~P6ít 68 ÔO~6050' 10'0" 605Q.,.6235, Pi '~oh 69 E3' en G23e..6245' ß2~420J Ditch 'fO 6395-640ßt Hone 71 642O-ß432~ 5ßôct 6 432..·6590 ~ Ditch 72 1 n 613 6590.-.6ô05G . . ~~~~~~~~} Sr~ly clay tt &!I'k (;J."'aY!I 'Vl:t tl1 ra.9·'llY fil'le lEJ11inae medium. '~o light f!7ay ß5.1t;:l cla..'V~ oqeaSio:D.a11y lenticular) "but no-;; cl1oss"bedded" Oil odor, stra1.'\1 00107.'e6. cut~ õ;;:,otm.i sh yello"Vl l"asidïle in CCl40 non-ca.lcareous, micaCeoí.."ta~ "poker ch:lT) cles.vage, diþ ap-pX'oximat91y 150. Rara thin (uþ to ~1f tbick) beds ail t, medium light gras, cI'ossbedded, slightly calcareous. :3 beds s11 tstOtlE>t each 1.}1I thiCk, ôctW£'1€!1I\ 6037~ and 6038°0 Nicro:tosails absent. Sl'I.aly cl~ aa abov0. wi t.h tl1inner and føf/leT laminae and beds of silt. One ~V' ~ilt bed at 6047'; one 2ft silt bed at 6048'. r~ic¡'ofossils absent. Fole deviation at 6200' is 3° to Shal.y cla,y, medium-dark g¡:~t s15.ghtly oa.lo&l.~eOUef sli¡c;ht1;ÿ micaceous, poker eM:p cleavaga: "f1¡eli in- durated, dip 150. Contains occasional laminae and. rare thin (up to i.r: thick) beds siHiSf¡On.ê, s1ightl~ sarul,y, maditìIíJ to light ~ay. calca.reoust sometimes len'ticv.lar.. n.crorossils rare. SaIl(,\V £J'tl'oaks OCCt'i.Z' at 6280e a.l1d 6390~; t1øiìiat1on of the holo at 6400' at:; 30~.. 4'7!f S1'!aly cla,V, r,¡ediUl11 d~..rk g¡:ay. non-caJ.ca.z>eo'L1G, slightly micaceous, 'il11 th lamiuas (often lenticttla:r) of light ø:~ sl1al;ÿ silt, totaling about ~ of th~ rock. :Rock is 1'1\311 lnð;œatad~ and has a dip of 16°. " O~ll rr Sl!al}W clay a.s abovê. ,"¡3:~h laminae b$.dl:r d.is·bortød.~ poaa1bly dUG to ðont~"pora..'l.èOUa à.efo¡>mation 'by GlûI'n'ping.. Laminae are pinched off a..'1.d folded to i'a semblE! the etrs:cl:;v appoo.ranca of marble.. The <leformatlon i9 greatest in '(¡he 'bottom ~..alf c¡f thg inte:rw.l, where the clatV: sil~~ ratio ie about 9 to 1. The U"\'YPoo.~ 5!i,. tlhich cón:ta.ins a few naro'ly un.." d1 sturl:¡ed layers \11 th d'l):formaM.oZl bef.ïwsen them" :t 0 about 9O~ silt. Microfossils rar!,'}.. Devia:Uon of hole¡ at 65851 if.! S055t <> A. sand st:rsak i G T.!¡·€H":len·~ !r/j 6560 t " S'ha.l;y" cl~, med.'i ~J1n dark {!,'é'fð:1' e non-caleareouGt slig1ri;1y ~1cac€ot!.s, ..¡i '5h laminae and thin lense~ of' silt; mødi-¡:r¡n light gj]ay, sometimes cl·o9abed.ded" Cla¡¡r: sil'/j :ratio is 10:1.. Cla,y nas "ðok19l" cbi-ø clea:V'3.g® ¡'111icli ShOi:1S a <1i1' of' 15 to 200; deviã.tioll of the hole il:1 4° e Hic:r>ofoBs:ì.lS are åDSE111t.. ~16- . . 9..q~iI De'.')th - .lli)FJt~e~;:¡ l)asc:ri:')ti OIl ~...., ~. ~ 6605-6740~ Di'tch it ;::mall e.m01..m:~ of very fi:ne~ a:rgnJ.aceou.s~ mi-ca,ceous, alightl;r calcareo1i.ss light~ €7ay s2'¡.nda1>one oCCttrs G:i; 6690 t . 73 6740-6750' erst! 5750-6915· D:1.tch 74 5915-5925' !P1OIJ Shaly clay w1. th ail t a.s in Core 72. Deviaticm fd hole is 3° 45:. Hlcro:.foßÐils abs'3nt.. Siltstone increases àlight~ v~th denth throt\gh this intarval. Sha.ly cl~~ medium dark e;:rc:¡¡. non-ca.lcareoiJ.s, slightly micaceøu.s~ þoker chit) clea:vage~ dip lõO" Laminae, tiJin lensasþ e.nd rare bads (U"rI -to 211 t}\J.ck) of light gr~ ailt1 Ðlight~v calcareous~ s11ghtl~ sandy, of'ten erossbedded., ma.1tø up about 101& of the C01'e. i''f1cro:fossils absent. 3925",7010 ~ Di tch Deviation of holô at 7000~ is ZO 4l)iI" 15 101o-7020~ (3Gol7 S1'1.aly clÐ\V. w-ith ail t laminae, as in cora 74. T1112 1 a the :final cora :from the ""1311$ which bas a total depth of 702Qt.. Microfossils absent.. LITHOLOGIC AND FAUNAL RAJ'íQ£S IN FISH CR..'iF~ ~70. 1 tn.dtF3:t!Qtl inc¡~easas gradually td th depth. There is no aò:MZpt change in conmäú~1"n a:~ a.n.V depth.. ~p()1taI' cl't..1:pt1 cl~a.vage di9velO'ps a1,¡Gut 4500$ and. continu.es to the òottom of the hola. . .l?i..u!: Of -to 3300t: b@ds ~'U"Ð flatlying, 'Jï1 th occasional c:ro~sò~dcling dips to 10°.. 33508 to 3370.: dips are 0° to 5°. 3:!?O' to 4150 ~: beds are f1atlyin&; ,~150' to 4900f: di11S begin at 50~ . incrøe,se to 10° a:Íi 4550i.. "1900. to 5290.: di:ÖB va:ry from 10° to 15°.. 5290. to 5585': ðj:~e vsry from 00 to Zoo 5;:;90· to 5595~:: d:1.r}s vary :from 160 to 20°.. ~ . 0 . 0 5598 ~ to 5608': di"f) 9 va:ry fram 0 to'í7... 5608' to 7020 e r ð..ij)ß var¡¡ from 10° to 20° ~ but aTe uS"'tJally a.bout 15°. D9viat1òn of Þ..ole: The {leviation from vertical is under 1° dO~1!l to 5800'. it ie " "---lalöT~; 5880ß~ an(13° to 4P below 62000.. .Jen~o.~~ is ~?ðSant in moat ditch ~les tr...!'O'IJ.{,;t..out t11E1 :hole; it is -probably c(:mtami!'\..a.tion belo~l 5000'. Local ooncentrations are considered to rG"t1ra- sent ind:i'tJid.æl 'ben-~on1tio laysrg (although ·the;v ¡m:w be due to cav1llt~).. It is l'Iresent in <iOTeS from 825t i¡o 1655'.. '¡\l"a.gg"nJ..~! is 9catts!'Gd throughout the hohJ ~d tl1 no '\'Join.ta of 'UZl'J.mtal abundance.. LvriJ;o is nresent in varying amotU1.'Îis from the base of th(~ Gubllt to "below 5000'" Outstand.ing zc:mr.,s c'f &bul'lÙt:1.l'lce ar~$ as follo~1s: 120-270': 370-4003. and. 119o.12?59 . 1 t déCres.ses gradu.a.1J.y in ·~he ditch to re,re at 4g10', and is absent below 5700'.. ]iio'bite i@ l"are above 13001, increases f1:'adually from the¡;-e to 24.00g a and is cor¡unon to abUl'ldant from 2400' to 4400'. It -¡¡hen decreases gradually to raæê at 5000; G ...17- ~leð-. ~~~ ~~ Y.~_~ ._._..~..,_<_ L,:=::: "~_J. _ t......M- ~. FlC~6nca Ruckar~ Gaologlst October 27~ 1949 ;l})·:~"t'7(~$·.:~, ;4~'-::() 1 l:111C1. ~;'ð !1bul1dz.nt fron1 570t to 6001 . '. fi!,HHi <SiJ~Xl fle.ke8 of 1!'.ao~.,;t~ tl?d c:a,rììOn! ~à t"/\!!U'::.t J.J~1 8:o'~;,¡,,1;;} dt3C¡"ða.f31~:u{~ -:B1..}{:n}.::';;.t2~ i~'om 20{j~ to 60'OO~ ~ i~Q. c(xres. .~'I':;'),~~. ¿;>")<:''''':'.:;-:''~ .::{~ ".'1'h«:::'".'t-"'J;'" ,,:,)l"'OV!~~':<: ~1r;::;~t-.?t ~:,~ ~·'}~i"1~...lJ."'~"¡. ~ ..... l' (0 '''V'~1~~?)''" ';;\::,:",.",~ ....~,...'~.. ...:.....~_.-..... .J.,J'- c,,~--,..........',:.uV t-"U ","'...,1 \J~iJ....... . .~...:. .......\,.2,..jJ......~...:].;;Þ L.tOnf:;J _ '.JO_J_w.t...~ .....(__;...u.¿-..... . . :2roD 3150~: to ~~J..OO 1; 'Del'ûlii ijI:B:t de'Tr~h the fora..ginifera &~'V¡e s..{~.in .. .,.!. "" n ..,. !.~ .." .. '\ ~ . 1 "" 1'- 1 1 ~ r',::?:J:"J(, "'~.t}J 22rs~ .óO!.VJ J.,;~~ \LTITI€X' l~e~nti.aln¡¡J:r¡ !CSS..!....s OCCt1.r a"~ !.:r.ú/~;:.:.::: ; cores )~:om 4010~ to 6235~ contain no miorofossils; corea between 6235~ and GL.132'~ !'E~~V0 a r8J~<!C D;~R fa1ÙàsL, and bglo~1 6432t cores are all -oaære¡¿"Þ ,.., . ~ " . ~r' , , ..) .." . .... -;..... ~_. t -"" A' 1 a.~Ð ~c '.1.:£:8'7; ¡(n}..11tt tlf~ ~:J:) ~ ,,( ; "oneJi $?e presen 0 "GO 8uL'llu.GW"'1 , 1'i.t. Gil a argo nvnbar of specioß¿ from 5S~t to 1195~~ .,l):::Q~i;'..r~; Ûlell f:i>E";gno::.-.!.'h9 01' TIz'5.æn¡s ("!;',$J"ù.a.l1;y microscopic in size) fiTst a:r.mea1' ~1t 605.; tl,e;y aT,?; concentrated at '1#he :fol1of",i.ng d.erpths: 60B~705 J : 12Ðv=14l25?¡ 14'?O,þ162B'~ 2300=2495~ (·the r;¡noce:ra.'Ws Zone!!); 3320-3út.. /;1. deli ca:Ga, l/ei! "by 1/1S" o1~tl3r shell fragment ir4"8.S nresent in the di ten f!.!1lliDlo ,a'O <.<840~ ~ cne lO~}0r occm>ren.ça 't',as rwí;ed at 43'fO~. ::'Jaøv5.d.e;'.talh'\L1 (eCt1:¡')};oTIod) fragments ~iere -o!'asen:t in occasional ditch s.ax:mles '¡':.~.I!.- '-''''~om ~f"",,~133 f:A~ t'1~f70~. ..' . .:J..':~ ~ (,.J'_'y\,.,- J\iJ .....J\./ iJ !1~.~l:;?BSLt~~.M of m:lcro~copie size a~e 6250 to 42203 in cores; a. 'i7arte11ra A.m)10rd te 8hol1 :f?'am110û·::ïB are vaJ:'.J gnall ~ra:1 .......j~.'SJ:"!!~.,....<..':...-_~..,..~.s~,.~_'<:~.,I to 2?10 1j; i~h.0 l'dt1:3 a~~ !tC:Ðcin-10n i:rcrû fji~O~z l02E31 c~Z' <3tJ~ 3810 ~ ~ U$U&1.l1:r rare, "but are 'tras f'ot1..I1.d at 214.-5~ f) raxe; they :ra.ngst in ditch 3~~ùles was at sea t tarsd fZ'om 'tr) ~: {J :~:::>'_:' .:J. . . . FIGURE 54 . . - ~ "Lðw"¢! I""' . 1-('; ;'!Jç;t.k '. ," . ." .' ·ISOPACH AND LITHOFACIES MAP." J-1, ~_-:,~":1 :":,~~ .:,::,(~ .,....,:,;..'.,.. '..C-,_·,- -' '. - Wel1 ·íOO.2,cf1 At i garu Point-l fOO·~ South Barrow 3 'O()-O3~ ~South Barrow 13 fþO-Ol.{i:> South Barrow' 17 /cÞ-/öl Cape Ha)kett. 1 löb-o'i3 West Dease 1 . 1 þ(J -'II)'t Drew- Poi nt ·1 10U-/00 West Fish Creek 1 100-103 South Harrison Bay 1 ioo-tØt.,. Iko Bay 1 IDb..¡jOO Ikpikpuk 1 IOO-~ Inigok 1 10000-ltJtJ North Inigok 1 100-15"5- Kugrua 1 ,OO-tsr. Kuyanak 1 ØO-/~ Lisburne 1 100 -/~ So.,th Meade 1 IO(;)·-~ PeaI'd· 1- -. 100 -/~3 Simpson 1 100-gol East Simpson 1 IOO~ East Simpson 2 IOb...~ South Simpson 1 100 -16;;) East Teshekpuk 1 lðO-"S- Topagoruk 1 1000-dIT Tu1ageak 1 IOO·'~ TURal ik 1 '00 .0'(.;) Wa 1akpa 1 loooOC(tWal·akpa 2 750 748 187 503 178 431 11 252 667 643 580 150 136 616 587 ,(1) 714 205 520 282 87 814 1,038 782 812 140 640 613 *n.d~, not detenmined. 229 228 57 153 54. 131 "' 22 77 203 196 177 46 41 188 179 218 63 159 86 27 248 316 238 248 43 195 187 <1/16 . n.d.· 1/8.4 1/3.2 <1/16 118 1/16 <1/16 <1/16 113.9' 1/16 <1/16 1111.4 <1/16 1111.2 1/7 <1/16 <1/16 1116 1/8 <1/16 <1/16 1116 1/9.1 <1/16 1/7.7 1.17.7 ? Unit J-l, which contains the reservoir "Barrow sandstoneu in the Barrow area, lies unconformably on TR-3 and is restricted to the northern part. of the NPRA. J-l is Early-Middle(?) Jurassic and coincides with foraminiferal zones F-17 and F-18 (Anderson, Warren. and Associates, 1974-1979). '.. The thickness ~ of J-1 is related to its truncation by the overlying mid-Jurassic and basal ·Pebble Shale" unconformities. The thickest section penetrated is 1,038 ft (316 m) thick at East Teshekpuk 1; this section extends to the west and paralle1s the Barrow Arch. Northward. toward the Barrow High and the Barrow Arch, unit J.l is progressively truncated by the basal -Pebble Shale- unconfonaity. In the eastern half of the NPRA. the mid-Jurassic unconformity deeply truncates J-l toward the southeast; J-1 thickness ranges from 580 ft (177 m) at Ikpikpuk 1 to 136 ft ~ (42 m) .at North Inigok 1.." ~;<' ". . \. I ~ ~ . . In the western half of the ReserVe. trUncation by the båsal -Pebble Shale- unconfonaity' is more gradual, and 140 ft (43 m) of J-1 is present at Tunalik-i 1.i The·,:¿)ñiél:..JU,rassic unconformity probably truncates J-l '. ' .caapletel-!.:in. an 'east-west direction across the middle of the NPRA. _~_. 'c:.__:;~· '-~,::_._.~..-.,,:,.:-,..<:.:,-.~_:_~-,.'_:L;·_~_._.-~:~.~I~-:_·_~~~.,:..-~<.L·.: '_:__~~-':-_'___--:. ,_. __'.~_ _ _._:_.~, .:'____._- _ ',' _ _ _ __.,'1> -';.\ .~;. -~'-::,'b-- -·unftcÒ~l':'êoiriïts~ci¡-·è:iëfi:"Hi"-cteposttectshale-unlts-that-coarseft--úpWa,d:.: . into-'¡l1tstone or sandstone. The only econCIDically i.portant sandstone in J-1 is the "Barrow sandstone.- The unit-becomes increasingly argillaceous toward the south, away frOll the Barrow area. At South Meade 1_, a esand-shale ratio of 1 to 1 probably denotes the southern U.ft of any potential reservoir rock in J-1. .').::...~-'.:-.._._-_. __'_'___'_"':'__d_'-'::::"~-:'._ -'-. ..............-~--..~""===..."'"-~~'" --'-'-'~'--'---'-' -" ..,- - ---,---- --'----. _. __"_.' _ _ ~:. .-.:,",-'-<,.'-" ~-,,,,~-"_ ~-==-..J'-"",,"-.'--' '__'''---'"-'' ~~l.~........=--"",=,".',<=","~"",===--=-=_,,:;=. =""" .".., ... ----·--·-·01--··..· '. _._,.-"-;"';"~:-,,--.__.,,._-, .J~ I I I .',; I I ----I ::l"<' .'",. ....I . -·-1 r I I I I J J ] ] " -"-'.- -'~=".='-"-'----,-"--'""- - ._---, -="'" -:~~-:':: -~. ._~,. FIGURE 50 :".'-':'-.C:'_' . --'.' -. .;¿;;~¡1J~' 'SOI>AC/¡ ~ ll~ÅCI£$-!JiII> ÐI-J6 ···"'·C"';__'<; "__,- _.... .;.;.i;..!.....{-: :'_"~':;. _ . .,'_.. ·"V"".;_ --<'<j1;-~,", . '.~< --., '.. ~~1.;·":;~!.....;i~. - S'~ ~3er- S"-,,. 'I- dI" :.-:-.. ':.:"/;",-,"."":-' - . "-"'.:.-' . . -.:;;: .~,.c;. ~. .. not etenQfne. In the northern s..n.t.t... The Part Of the Nl'RA !.bIt ÐI to J6 ft '(ll ""'t r""ge. I. thick.... 'r -3b COotal.. the Sag RI..r Ju.t 'OUth Of ~'; lieff F "h C....k 1. tttt't:" /';''t~t. (66 .) .t Peaf'rl I the SOuth ac.... 'r../ to the Bar..... HI h 'Cke.t develO""",,t nol'tlte", ha I f of · th the. lie...... "011 Pl'Obab Iy 9 ¡ IIr..., t th I.. t....f'rI .ort/ ...... I · ""/IA. 1. the Bar . pre'..t "'y 1. the ·""bbl. Shal.~ "'.p. the Bar..... High. ~.~..... ÐI.-3b thins t...."" the 'PÞeiJ,.. to thic'k""fO""t;y tl'Unc.t.. ÐI 3b O~ 0.... .I"et. the ha.., ">: "hethe,. tl'Uncatl'::/:::: ::u":=rth..~.t. ':011 0.::- I~"::~.::;t: . ft:::,. ÐI-3b I. the ·Cl......t. strati '- '. the.::.the::-Pa':tIJdst¡>ne "thofacl"':~~ "::: %['''ed to date,", the '. c,",Sf.ti. Of 0 the NI'R.4 ...... It I. ver I. re.t"'ct8tl to ,nc.....,og"-. .il:y ':,:.. of O.e'l'PPI.g ":r~~~k. .."" Ø....bitbly ,. ÐI-J6 ""'".t. of )1 ef'rl the ...t 0IJd 'outh, . u "'flnlt hec.... :, ....,st..... Sllbt..~t..... 0IJd..' ,.ha.... f'CI.. of Tn, the 8'''rOtr area. . · ., ct- ,. .,~., .~. '''''-''Ibolos. . 9 '."""tic, 'hel Jy ~~t~'0<"·,,,g:"i'é'" _ _ ;!:;::i}~~~~~l~'Z:: r:~rt:'·::::::::'!rn ha~: 1aOd·....., ::~I.::...:~ Pel.t 1 to the O::;":':-1,.~ '011 Ku"..,. 1 to thl...". .."...... · "'OCI.ted tttth tho Fl' .'" .ee_ ..... Of þt th.FI'h C~"Ì< O~I"""'Ocated .t IkPlkÞuJc ~h Cre: PI.tf_. A .,. j~~l.tl"....~<,,,,,,<. .t '!.... bar Or eo.. reore' ""... . -"'J."" ... "'~"""":-'-"--"'~':-::'. :~..< '.. <'"'_::"::':"':''''-'.è::;;C.:s:,,,¿::;, - ~..~- c; v /~-~ :i.:lt1.::::\i'~~~'9f.; 29. I~"::::;;: I::: :::::¡{:": 1: . '."-""'.. c.,.. "" I kett" 1-' 80 24 . IOb"",,-!! - Iie.t 110... ,'1'-:",,: '.. . 131" fO . 7 ·~,·I~t ~ Pelot'I'("''';' '; 151; ~"" 46". '~"Zl"": /test FISlJCreet 1 ..' 1f6if ~.' 32~:" ,,; (. 103 South ItarrfSoncRs;: ·1 ':''::, . _. 11.. .. -'''''.-~'i. Iko. ~ L: "."'" '." 54 . '17.( 'Ob_óftJS, IkpI kÞuJc T ' "', ,g~!II6;':i--, ',. 32J'- ''''' -"Jo¡ I.,!/Ok I" :. -c .51 " 16 '1>0"1>7 Herth l"f/OI¡ I f4 13 '.... -t~- K"gru. 1 93 28 /ðO -15(; ~'''k 1 132 fO ',,<>,"1'/ llSba,.". 1" 132 fO IOO'/O"ý South lleade 1 (7). /o¡, .~ Pea,.., 1 122 37 '''''-otJ $1.,,·..-1 -', 216 66 """~I £'st $1.".... 1 116 as 1"'<h8 Ea.t $1."... 2 157 f8 100_ SoUth $1.".... I 154 47 '00.",:1. Ea.t T.SltekPUk 1 143 f4 11>0 - I'Iõ TO/lal/Oruk 1 129 39 1ðO...... T~I.,..k 1 150 46 'OO-J;;ÕJ·"'lk I 117 36 IOO-c«~ IieI'kPa I 88 27 100-0'11 1i"'kPa 2 126 J8 14} 45 '''>-CSI $"el"r CoI"lle Areo Itkillik River 1 lie I i;~~!'~,~.... .. ........ !:fCknetSeSr' $. . .......:,{~,',";...",. .:'....<;''- ....~ Sand-Shale' Ratio .' c. , -, -..:'\ ':-~-' .~ . ~ 46 74 14 23 3.4 1.8 >1/8 , 1.4 1.6 1.8 3..9_ >8 111.2 3.1 1.6 (118 115.2 2 4.8 1.2.' 1.8 2.1 2.3 3.0 2.6,.1 1/1.3 1.1 2.0 (118 2·86 2.3 :"" n.d.1t <118 CHUKCHI SEA L.. ~ BARRO¡'~ I":': OW 0itV ~ Ò ... _~ð..' ,0 SO---BAIIIIOW-' ;.£i~" ' _z'~"'~:.~>liI I.. . ,.~~ !10 rF. ' ';~'" iJ..~f'S:':~~rtt~Y1~t ,~O "'æ:............ '-.. ". .....'.. æ!~::Jj·····J:1:::?:A '.. ....... ." 1..~SOIl I +X.::-:.:.,~.<.:,::\:\<~. ,.:.~.~. ;,{ .:;:':'.: ¡'~Al.A~'f:.~~:.:.::.~:·.~.:;~:·:..:·~it~.\·:·.::~;... .0 /0æ:.'..';::';: ~.".:.:::,:..:.:.:.~ '.:::', )1';J~ ::w~~::"~:::::>I±DÆti'!l~~' :..... ,.I~ ON I + ~ ....~:'·:::<::::::::':·~~~LL èLIF~·\t ,~:'~'<,::: :.:.;~:\;:~~:·:~:,,:.?·~:·:·"~~~~,~~:0(\!...':~. .,~N I:.:'=:' '. ",)k ':.;:.. .,. # . :>V::- ~,II.'::>-<jJ':"::·:':' ::::::::::;.,:::;;:~~....~..I32 ':.:::.:: :~Z,.·;:~ :1.1111 I," .'. ,:<'~~":':':':::;':., :.':;;':::·.:.:..,:::'/:::::.::.:.:.;:::t.:::::,:.·,:,:::,~.'...'.'·::"i::::· ,:.:~.,:..::-;.;¡ ':::'.:...... .:::.' ':.::/.~.,~/>.~~~. \~·.,·:\:(V ..4."; 7' ~;;:, ' ·....···....··..·········"/#12::-········ ..:.., ''£ ~.'J!0Sl SJ - ·····~..~~;;~~:C~\~i~Iit~~·~~r?~; . - ·..,·,~~·:~~~~rU~,L: .'¡:':\'::.:...: :·'Y:':·)\:·:,;::~::':~,~: ", ··:··.'..:",·!L ::~ " . J..s-Co~ ~ L; the t-d....("...¡e...s I'?cv> T1f-3b C c.. f) n'"/;"""/'n"S Stt.~ J?,ve.1'" Ss.) '-¡~IT·fh. k-~h F;Ÿ1o.1 R~i: (No. ii.zoo) I 9"i/:z. FI".1.. Ç'() 'G IN WEST BASED ON SEISMIC APtHC INTERPRETATION . - ,+ ~l ~.w, DALTON I W I'OIN'f ., I 1iP-.... '-r. . I 1-=-\..J\.'J .....*;.~. 'OIIAII I tlON l AT 'A: ' "7V';': :~¡t~~1 ;';~i¡'_01 - IC~~·~IIC.·",· .*" M.".::. ..:'.'!" >":::1. , ......1 t./··~·~~: .... :ä4 -- ~ . '\.,.~"'~ + + + WAINW, r.ijÑt. ~LAK . - -' - '.:~ t- -- '!K~I' - - - - - - - - - --- ~-- - r!¡ i?- - =~~,__ _ ________~=_£-::.-~~c:.~-:-~- -- :... ~ ..L ""'- - -- --:-:-::-:-::-:-:~-::: - -:::-:~ ".,.....- ~:...; -:-- +- ~ ~_-_----- r~ --.: - - __ ...'1: 18:.-_ -_1"_-- - ;-~ - - T, { ì"'i:..;~"""J:_-_ - :-t-:---:...------=---=---- ... -=-__ - - -~ ::..Itr 1" "' ~ :::-tt ±C-"C--~--------- otc------------- - :--:-:--'ë-:--_",,"C7"- : " . ... ~ -- _:---"- ='L _ _ __.__-::;----'1,.-::..:---..:------- ___-___ - ,I~ :--f'-_- -- '--_-.:~\ 7' \J 'c, .rJ' - r '-~=-i.--- - - -- ~:P..: _ _ -=- _ c-= - - _ - ~5~: -:~~f: :.:Ÿ c;J \. I~ \ I c{\ \ ( ~ ;r:-_-- - -. .: .f, - __:...~ - _ _7:--'t: _ =~____-: _- - _"~W~~UDEI ....- 1-· J,r·?- ~. . "11"'_ ..... ~-..:..:-:..:- . . _,"I --' } _ c~~ ___ _ - _'-' _ ~_~- ~ v"·- ) i'\ S ~:-c._-_.· -- - - ~~~-::~:-~.f~-':-~~~- -: _-~___:-...;u 1 ~ {- ~~ ') '..... <-' ~:::\j:,i---:::~~-:::-:IJ:ÆY._..\ E-~~~_ci---- __ - - -- -- c"=_~ I , r' ,/ ¡ P - "':2! ,_----- .~ oc-: _ :~; _c'¡:_~j¡c _ _ - ~/-.,,' ,- f r.."'~ - , ";;--::~....! '~'ll "'. \:,-1 -- -¡ :-: - -..=-- ! ,i,< <:>",.~.;\J -'\..~ \ 'r\Î-:J \~ -=;' 'f'.' J.........~,...?", ~i ' -}, V J ~ I I" u,~.~_. . ,,-;.J" \, ! \... ~' / ' -J __"0 -- l -.- .' -7""-1 Pi rç: r'l \ {\ \T 'i'.~ ,r~ ~M- ,,~ ~! -} , Jii/? ~o \ I.! 1'::."..1- ~ )__... "~z~ :~_I: .,.J ,._ T.J ì,_ ~ ,:A·~~:ï..~ \\'~ï'~: \_-, ~t·J"'-'. ~: )'-.. T I ' ~ I Ì\' '\ I ! ,.- ~ I .v, -............ -t -'. ....~ \ ~~ -^ ' l' !, ¡--:;;¡;IVI ¡ T ...... '...._ -1 I ' r ~~Nf\ .,.. ~ _., i . I \ WN1mLADI J \ ~~"'fWIIT I~ ~!... . i f/)À "I n --+- =Ç'Ì! M·tU I 1-, '!J- . \ \' '_ '" ,__ ,,,,,,,,.._' -",,_, ~ ~ì I _ ~ .,:..; ";,,,- ¡..Pr. ,-,.-' .".,.. . ./-V~ ì"', ~._~, "-'\ "...J "'''~~~~I' dL 1 \ ~,,--J 1 ~t r-~ I . rrV1"~ , I . f.M"" IT' ------r !\ I' ! 1./< ! ,'I I ! I lJ 't..~ ..... Lf'í f ' ! 14;:.. '. I~ 1; ':'-~~- \ . - - _""t.- ..; ,.. ...- , ,..... - .L!~ .-- I.., ._.J tf:¡ I,.... J I ! I ¡ i·..·~l I ., I I ¡ F GU~E 71 i I I POTENTIAL RESERVOIR AND AVERAGE POROSITY MAP PF SAG RIVER SANDSTONE I . . .-.-------.-..-.-.-... ._.- ....- ....._- Well 'Thi ckness Average Porosity i .' Feet Meters (Percent) I ""'-104 ~ i ga ru Poi n t 1 ----------------.- 90 27 16 IOO-tO' Cape Hal kett 1 30 9 15 IIXH>,{3 !st Dease 1 83 25 18 IOO-I~1r . rew Poi nt 1 85 26 15 /(Jt)-/Oö st Fi sh Creek 1 36 tl 12 loo -I/)3 ~outh Harri son Bay 1 53 16 15 100-:J00 Ikpikpuk 1 31 9 7.3 Io()-/~-Kugrua 1 107 33 9.6 fOO-/5'"(,. Kuyanak 1 107 33 16 fðO-JSCI South Meade 1 66 20 14 106-é);)(. Peard 1 135 41 8.5 /Oo-If,3SimpSon 1 105 32 18 lðO-dt,( East Simpson 1 141 43 22 /ðö-;}03 East Simpson 2 154 47 18 /OO-M-r South Si mpson 1 143 44 17 IOO-1Od. East Teshekpuk 1 87 27 10 /oö-~Topagoruk 1 89 27 14 /OO-ðw.Tulageak 1 75 23 18 /0()-cft:J Wa 1 akpa 1 61 19 18 /()()ooð~8'Wa lakpa 2 80 24 16 1fø.S"_tß( Sinclair Colville 1 43 13 19 The Sag River Sandstone is the sandstone lithofacies of the TR-3b parastratigraphic unit. The rocks are Late Triassic to Early Jurassic and are .restricted to the northern half of the Reserve. The Sag River Sandstone is a sheetlike sand body that probably consists of a series of overlapping bars. The lithology is typically light-greenish-gray glauconitic calcareous sandstone. The Sag River Sandstone becomes increasingly silty toward the south and west. At Inigok 1 and Tunalik 1, laterally equivalent siltstone and shales are present. The Sag River Sandstone also grades into equivalent calcareous and glauconitic siltstones, shales, and silty sandstones on the Barrow High. Porosity within the unit is very good in wells drilled on the Reserve. The lowest porosity, 7.3 percent, was at Ikpikpuk -l~-.t.he__b.tgh_e_SJ¡R~;U~º~ity:-,-_g~~ J!~!'.ce!'t,was j n Eastn Simpson 1. Porosities above 16 percent were recorded'-ln-ãTrweTU-u'fitñe northwestern NPRA. A second area of good porosity development is over the Fi sh Creek Platform northward to wh~re the unit is truncated by the basal "Pebble Shale" un~onformity. There were several minor oil shows in the Sag River Sandstone at East Simpson 1 and East Simpson 2. I ?'11~ L~ ~.71 .. ...- '-:-4f... '. I 31_ .. ...~ ~I~~,.!.,,,. &orro.. OF ... ...... TlltlNcATEO 8Y ....l : + .......... ". .... ~ ......,.."" " ..... -;'X -w.!' '.. 0" W.. . ........ ....... """""".....'TT IS.. S",e J....,. .. .:.",.. . ." h ,.., '.." 1f¡;>/" ... 0 . ..._, . ...¡ .OP OF ....0 4::::~:j:,:;;,..., 0 ,','" '" :~.~ A". .....:, _Ý, !!I : _ All I I' .... ~.~~. ....'\1 5 " ~;.~.:. ',' :, . .. _. "..._ "PEasE ~ ... . Eo J. .... '* A... '.' " .. · '. ".m.".,""..... l ....... '¥.>. ".. ...-- ,\. ," /,. ,..... ". '. .' , ..~ ""H"..."~""'~' f.... . ., .... " íI' ~.. <. ~"'"". ... ... .."",... ....W.f!..._..." __ . ......., ..... 'Y. ....t. .......~ -""~'iioi! J!'ë t'11 '1("", ..... .(;::..~ $£A\!"el~iä_. ~"=" ~ ~~. "";;,:.~ ,. îÆi,.;;.i..;p:;.... t :1 ~ 'L<I'[ "'¡"""T ~_~Ÿ"'! " ~... ~r+-¡ hr f; ~\Jt±~\= 1 ~i __ .. N _I :¡.-- .À -'. .1 71 \ )t ' __ .._ -' i \;zj1': ~ L. --, I --+---w- I. _, ... ~-? ~.....,.... c,-lì\..i ' ~,'; 1 £~ . ':::W..-, ... I( ._., _, , · ~ I I j . \' ,-¿ "\ Fl: ' - ~ , 1 . >, ~ ............ ., I r" I 1 -."'" ,-- ~, 0.. ~ ~ ::; .r, '-- , :o----t . :/ 'r-I Ii. H~ r:r T~) , j +-- ~ - t .: 1 t1 ,........ , I ~ ~ . . I-- r"" I I L I D· I I -<:>""¡ '""'!"" ; 1!..I..".." ~ :w i. :Þ~~f- 1'- 1 ~ I-+-- Moo ~. - .... I ( '. i. ..), 1 -!- I I _._ ", , , ~ ,_, I - Ii ..L t-f- 0 .rf. ;:;¡¡. :::."" . I.. :. ' . UMIAT t~~~_ . --- 1 '" ~ ~', ¡¡¡¡;tIt; .-9 ...., iì '! - . , è-t I I 1i'~ ~E.UIIIAT.' t: L I I ~ .. ~-I---- ~~R~EEK ...... ,i i: ~~ T = J I-- IT-¡UK' T." I,S ! ~ E. ' - '-. ~ - 'I'. · M _ ._0.. ;- I""" $~ . I .._ __ .'. .' +-- : I -rt ' J I_...l _ ,...,L ~ . ¿') -'., - I J- .... £ TWT I, '..1-'. . "- ~- ", ~"...,. ,1 0._ __ . .. t . 1. 1 '-'T 1 " -+---t-i r _ '.._ __ . I I . --+-: 'ill --< 0 J...- ; _ '..l r--- I. .1. ~. __ I ..' _ . -~ , '.', If--+-", . .... ì". .1 --;.~ .... . ~ - ., r~., IP<¥-' .I. "'.!';;~:1 I J i_"t" T"',~_ LJ~'.,.' '-L~ U-----1 TE.~Æ¡ ~ .LI.~ '". ._,. .. '-" 0 ·0 IL , .1 .. -. .. í I :!:"" I .,:.!!!! 1 L-+- ~ · T1UCO "-.!- ~ I 1-<>;;_ rJE .~ __ "CJ IT', ..-;~~ --D?l ( , . HUKCHI + + SkULL CLIFF N.R. ~~!I:~~~ILA œ ~,u f..· I l..=- I + + I I R.,--JeY7f-/~-L1 )?"E?....s~e.,...yoJ,.. 9- A Ve.ra.:ge, ìGr'"o;¡~ JYlqp C' p. ~c.~5' f) J I"'er 5'..s: Df 1:>"- .- TR-3b ONLAPS BARROW HIGH 1';'- IS2- .. , T~,t. Tê.ch l-=ï~/ I?e-f'ðl"t- OV'".. 11 :'Goo) + &.. , . 'I(JJÓ-Il:ifÆ:: At i garu'LPoi nt IOO-6{Jff;" South Barrow 100-/OI Cape'Halkett 1 IDú-ao~:.J. W. Dalton 1 l06-0iè3'7W.: Dease 1 IOÓ-'~1{ Drew Point 1 . IO()-IOO West· Fish Creek 1 10ó-/~' W. T., Foran 1 ~- /oö-lo3 South Harrison Bay 1 100-03'- Iko·Bay 1 (0() _;).tP Ikpikpuk 1 100- "')C} Ini gOk 1 IDO-leAf North Ini goft 1 100 -I~ Kugrua .1 /00 _ I~ Kuyanak 1 loo_~Lisburne 1 100-15"0/ South Meade 1 10()- ~~ Peard 1 100 -11,3 Simpson 1 loo-~ol East Simpson 1 IOO~~3 East Simpson 2 IOO-A~ South Simpson 1 100-/0;). East Teshekpuk 1 liJb-/1S-Topagoruk 1 IOD-()rf Tulageak 1 ICO_~~Tunalik 1 100 -f:H:J Wa 1 akpa 1 loo-tH1J Walakpa 2 255 165: 215 139 67 510 231 93 284 58 480 343 152+ 372 184 250(1) 238 300 269 431 382 524 181 370 67 . 470 284 313 1~~-tr3( Sfnèlair Colvi11e 1 324 - Arco Itkillfk . . River l' ' 322 . ,78" 50 66' 43 21 155 70 . 28 ,87 18 146 105 46+ 113 56 76 73 91 82 131 116 160 55 113 20 143 87 95 99 99 . ..~ ~~:'~.')~'.~:;:;. "':'~::..:. ·.ciè;r~<ë;. 1/1.4 3.t 1/1.2' 0 1/1.2 0 1.2 9 <1/8 1.8 1/2.5 14 1/10 1/6 2.4 . 13.5 1/7 ~.4]j 1/6 18 n.d. n.d. <1/8 1.9 1.1 0 1.2 1/1.6 1/9.5 0 5.1 18 1/2.4 . 0 1/8.3 10 o 1/1.1 <1/8 23 <1/8 1.6 - <1/8 0 111.3 0 1.1 5.6 2..3 8.5 2.1 7.9 n.d. n.d. n.d. n.d.' . ".,'u :-'<:_, . ..... *n.d..~::~o~· determined.. . ~ ',"·h·'+~/,i~tg':<-!.<-__:!¡i:/rh~D;TR~3~:}~n.1it~ê~iri~ides~: with' the Shub 1 i k . Format 1 on. The ::::~;f::;-;::l'<~1t':Var1a'blè;7' h1ckness'Xoti 'the<un1t 1 s assoèfated w· th the -~:f.ñcfpa;l·e~~º!l~'- fe,_~ur~_s~~f._~_h,e::,r!PR~.:},:IIl~th~J!ª-~1;erlLh.lf .._. _. . of.-"'·it~i eserve{" the:, maxfllUll . th1 ckness .... of TR-3a occurs at ::;'~:::~~0::-~.:·:·_¿t)···~i· /"~~::'">c;,.. c ,~:.~' '.."";:i' - ":..-- I. . . .:- .~: ~.:. ..i':", . /r .';~'~B~~\<:'-:·.ê~ '.'~. ,:"';'( ''',:{;'-_ .. t- ~flt.'~i~~~ffj~~!·Ä'S~ ~2~ _~,¿~,·;::-c_~.;-:~.;~c ~:~ ... '_. -- -- ~ - .......................~.:.-----=.:...._----: ..;..;;:.~,......,.,~,-==.,.-., ..~..,.--...;:...-._. --~ - --.---.-,-..-..- ~--'- '7;--' . . Ikpikpuk 1 (480 ft, or 146 m) and Inigok 1 (343 ft, or 15 m) in the Ikpitcpuk Basin. East of the Dease Inlet, the basðl "Pebble Shale" unconformity truncates TR-3a. The truncation zone runs roughly east-west and is just north of J. W. Dalton 1 and W. T. Foran 1. West of Dease Inlet, the unit onlaps the Barrow High. Thicknesses of TR-3a at East Teshekpuk 1 and West Fish Creek 1 indicate thinning over the Fish Creek Platform. Thinning also is apparent on the flanks of the Meade Arch, as indicated at South Meade 1 and Kugrua 1. In the western half of the Reserve, the uni ti s thi ckest at Tunal i k 1 and thi ns northeastward toward the Barrow High. Lithology and high gamma-ray curve deflections within TR-3a suggest that the thinning may be due to periodic nondeposition. The TR-3a unit consists of calcareous carbonaceous shales and siltstones, silty limestones, and silty calcareous sandstones. Glauconite is a common accessory mineral in the sandstones, and thi n shell beds occur throughout the interval. Sand-shale ratios and clastic ratios indicate that the best sand development is in the northwestern part of the Reserve. High sand-shale ratios at Peard 1, Walakpa ·1, Walakpa 2, and Iko Bay 1 indicate a source area northwest of the present shoreline. TR-3a is progressively more argillaceous toward the southeast and more calcareous toward the south. Over the Fi sh Creek Pl at form, the amount of 1 imestone present increases significantly. At South Harrison Bay 1, the unit is mostly limestone. At Lisburne 1, with no nearby control, arenaceous limestone 1s indicated. Apparent lithologic anoma'li es occur at East 5i mpson 2 where the uni tis interbedded s 11 tstone and 1 i mestone and Drew Poi nt 1 where the high sand count may be caused by statistical variations, or may indicate a small barlike body flanking the Barrow High. -_._-------,---. ----.. ...~,._--_._-_. / T BASED ON SEISMIC :RPRETATION. ), Ojl l' - . JVJ L(JpO'~ '1- LJ l'1Jðn~ e& C\f rR-3 C\.. Sh...1lt'" Fm.. + + + .too' + 4PoO' SMULL Cll" I:, N .11. + CHUKCHI SEA ,~ ·,..ell. . . / e:1rY'~ keJ, OVð."'ð ;ZÐO ) Ft -;"CL/ R epOj·. t- 19-<8 :-¿ FIGURE 72 TYPE LOG OF UNCONFORMITY· BETWEEN SAG RIVER SANDSTONE AND KINGAK FORMATIONl SOUTH MEADE I, WALAKPA I, AND WEST D ASEl This i fi gure shows representat i ve sections· of the Sag Ri ver Sand~tone at South Meade I, Walakpa I, and West Dease 1. In this report, the top of the Sag River Sandstone is chosen at a prominent gamma-ray and resistivity deflection that can be recognized regionally. These sections show that the log character of the Sag River Sandstone is fairly consistent in the vicinity of the Meade Arch, while the overlying rocks are vari.ble. The HBarrow sandstone" and Sag River Sandstone are separated by a shale and siltstone unit. I !~~·,h..:". ,......_~=-- "Old" Na~~ Wells (1944-53) Well Name Avak -, IOb-Oé}'?- South Barrow-l ¡ðO -083 South Barrow-2 I()O -oé}£./ South °Barrow-3 lOt) ~ó~ South Barrow-4 IÓO~Oó1' Fish Creek-liDO -)ðÒ i GJiandstand-l 100 -46""3 I Gubik-l 1()6-.f)~ I ¡ I Gubik-2 100-;):;):;). . Kaolak-l 100 -9~ Knifeblade-l JðO - II;. J Y.ni:feblade-2 160 - A619 Knifeblade-2A ;:S I\~t J(li\iPe.~lQ.òe 6- lo\eaèle-l OUll\alik-l 100-/1<{ I Eas.t OU1'nalik-l ¡OO~I/\S- Simoson-l Il)D-/"~ N,,;/h S,'",p~ð,,-I )bO-OI'lr Squ'are Lake-1 J 00 -I f..,. Titð.luk-l /Ob-dJb Topagoruk-l Jot) -Iq Ea~t Topagoruk-l I Umiat-l loD -QoD, Umiat-2 lot> --;)./D Umiat-3 IOO-C¡( I Umiat-4 too -81:;). , Umiat-5 100 -~(3 ¡ -- J Umiat-6 100 -;)./<1\ Umia:t-7 IDÓ -éJ/~1 I Umiat-8 1 Of) -~ I (p ¡ Umiat-9 It) () -Q/1-¡ Umiat-10 t{)()-é)/(f Umiat-l.l IDO "'G/1\. Wolf Creek-l I bO-J11 '1 Wolf Creek-2 JUO-:\lt?5 ¡ Wolf Creek-3 1(1)-" I~ .n ~. ....__. __.._n___.__·~_ '. 1 ~. , t J . "Intermediate" Wells at Barrow. (1955-1974) , . South Barrow-5 I be.) - b~t5" South Barrow-6 iOO-öcl'1 'r South Barrow-7 16D'-ù'3D South Barrow-B /06!-031 South Barrow-9 IOö-éß;J. South Barrow-10 lø-033 South Barrow-ll IfP -6'3"1 South Barrow-12 lðD-ò~ .. __....""___U__"... ___.__ ._ .___._..__.·_¥"'_n_ Ã/6