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187-074
HDVd SIHJ. ~l~tClNfl qVIB;AJ. VIAI AVAN XNV ~[~)Vqd &ON O(:I 00/8~:/6 GHIAIqlalO~IDIIAI oqeCI P~U~TS peoq iio~ '6ui66nid uo quotmuoo pue 'Oli~ IIO~ oqq moTAoH omen IIOM · oN IdV :Oll~ o~ mnpue~omo~ NOISSI~OD NOI&VAHMSMOD SVO ONV ~IIO ,T&IOcI ~ NOI~fOO% g6ue.foI mJ de-o I ALASKA OIL AND GAS WELL. COMPLI. ION OR RECOMPLET;-N REPORT AND LOG 1. Status of Well OIL I-'] GAS [] SUSPENDED [] ABANDONED ~ SERVICE [] C,'assific3tion of Service Well 2. Name of Operator North Slope Borough 3. Address P.O. Box 1120, Barrow, Alaska 99723 4. Location of well at surface 2181' FE~,, 2641' FSL, Sec 5-T21N-R1?W, U.M. At Top Producing Interval Same At Total Depth Same 5. Elevation in feet (indicate KB, DF, etc.) 46.6' KB 6. Lease Designation and Serial No. 7. Permit Number 87-74 8. APl Number ~0- 023-20023 9. Unit or Lease Name South Barrow 10. Well Number NSB 4 11. Fieid and Pool Sikulik 2295' MD 2267' MD I YES ~ NO [] - feetMO 600' 22. Type Electric or Other Logs Run (DLL/MLL/GR) (CDL/CN/GR) (D.L.) (BHC/AL/GR) (CIS) (SWC) '23. CASING, LINER AND CEMENTING RECORD CASING SIZE SETTING DEPTH MD 20" WT. PER FT. 94.0 13-3/8" 72.0 9-5/8" 53.5 GRADE H 40 TOP S95 0 S95 0 BOTTOM 55' 152' 1277' 7" 32.0 N 80 0 2287' 25. 24. Perforations open to Production (MD+TVD of Top and Bottom and interval, size and number) 2166'- 2196' 2242'- 2258' 2138'- 2162', 2212'- 2232', 4JSPF HOLE SIZE 24" 17 ½" 12¼" 8½" CEMENTING RECORD 75 sks Perm, 271 sks Perm. AMOUNT PULLED -- 1276 sks Perm. - 150 sks Class G. - SIZE 2-3/8" 4½" 26. TUBING RECORD DEPTH SET (MD) I PACKER SET (MD) 2114' I - 2123' 2105' ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL {MD) I AMOUNT& KIND OF MATERIAL USED I 27. PRODUCTION TEST Date First Production Suspended Date of Test Hours Tested IMethod of Operation (Flowing, gas lift, etc.) PRODUCTION FOR IOIL-BBL I GAS-MCF TEST PERIOD I~ WATER-BBL ICHOKE SIZE GAS-OIL RATIO Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chios. RECEIVED MAY ~, '] /994 Gas Cons. Commission, Anchorage NAME I IncJude interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUEVERT. DEPTH] GOR, and time of each phase. I I 31. lIST OF ATTACHMENTS 32. I hereby certify that the fore§oing is true and correct to the best of my knowledge ?,. - . / /-- INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1' Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, obse~ation, injection for in-situ combustion. Item 5' Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24' if this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. Item 21' Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). Item 23' Attached supplemental records for this well should show the details of any multiple stage cement- ing and the location of the cementing tool. Item 27' Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28' If no cores taken, indicate "none". Form 10-407 NSB ~[ SEC. 5-T21N-R17W U.M. P & A PROJECT 1994 3/25/94: Cleared snow, moved Howco pumphouse, cement silos and support equipment to location. Filled water van, wrapped tree with canvas and applied heat to thaw it out. SDFN. 3/26/94: Loaded square catch tank, methanol & cement at S. Field & moved them to location. Pulled top of tree & set temporary well house. Cut sacked cement & put it in silos. Rigged up & pumped 3 bbls. methanol down 2~ followed with 107 sks. (tubing volume plus perfs) permafrost cement. Switched to 4½ x 7 annulus & pumped 15 sks. (150') permafrost cement followed by 2 bbls. water. Returns were brought up the 2% x 4½ annulus & caught in the square tank. switched to the 2% x 4½ annulus and pumped 10 sks. (150') permafrost with returns back up the 4½ x 7 annulus - left cement to surface in both sides. Hooked to the 7 x 9%, broke it down with a rate of 2½ bpm & pumped 21 sks. (160') permafrost cement. Rigged down & prepared to move. 4/12/94: Steamed & dug out the cellar to 3½ ft. BGL. Removed cellar cribbing. 4/13/94: Cleaned up location. 4/14/94: Moved in welding & cutting equipment & cut off casings. Installed dry hole marker at 3 ft. BGL (flat plate) as requested by AOGCC. Filled cellar with dirt. MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: . THRU: David John~.~ Chairman ..~ B la i r Wondze~,,~l~ P. I. Supervis~~,~' FROM: Doug Amos,'b ~ ~ SUBjECT: Petroleum Inspector DATE: FILE NO: March 30, 1994 b99hczbd.doc Plug & Abandonment N. Slope Borough NSB 4 South Barrow Gas Field PTD No. 87-74 Saturday, March 26, 1994: I traveled from Prudhoe Bay to Barrow to witness the cementing of the tubing and 3 annulus on well NSB No. 4. As the attached AOGCC Plug and Abandonment Reports indicates the 2 3/8" tubing, 2 3/8" X 4 1/2", 4 1/2" X 7" and 7"X 9 5/8" annulus were cemented to the surface with Arctic Set Cement at 15 PPG. The tree and all visible debris will be remove this winter. The casing will be cut off 3' below ground level and the location cleaned and reseeded this summer. (]o '¢'"~' ~ I Recommend: that an inspector travel to Barrow this summer and conduct a final ~~ location clearance inspection. I requested that our office be notified when the location is ready for inspection. Summary: I witnessed the plugging for abandonment of North Slope Borough NSB # 4 well in the South Barrow Gas Field. Attachment B99HCZBD.XLS Operator: Operator Rep.: Lease No.: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION Plug And Abandonment Report North Slope Borough John Fanto N/A Well No.: No. 4 Sec. T-R Total Depth: 2,287' Date: 3/26~4 Well Name: NSB-South Barrow Gas Field , PTD No.: 87-74 5, 21N, 17 w Meridian: Umiat Elevation: 46.6 KB Mud Wt.' ppg. CASING DATA: Drive Pipe: N/A O.D." Set @: N/A ft. With N/A Penetration Conductor: 20 O.D." Set @: 55 ft. Surface: 13 3/8" O.D." Set @: 152 ft. Intermediate: g 5/8" O.D." Set@: 1,277 ft. Prodctn: 7" O.D." Set@: 2,287 ft. PLUGGING DATA: 1. Open Hole Plugs: NONE 2. Open Hole Isolation Plugs: 3. Perforation Plugs: NONE 107 Sacks f7.5 bbls ArcSc Set CmL ~ f5ppg. , 4. Annulus Plugs: 2 3/8"X4 I/2"Annulus 165 Ft. 4 1/2"X 7"Annulus 150 Ft. 7"X g 5/8"Annulus 150 Ft. to surface. 5. Casing Stub Plugs: 6. Surface Plug: Casing Removal: N/A N/A N/A N/A None All casings and tubing were cemented to surface. " Casing Cut @ N/A Feet " Casing Cut @ N/A Feet " Casing Cut @ N/A Feet " Casing Cut @ N/A Feet REMARKS: Ail cement., ~. plugs, . were Arctic Set.. .Cement, ~ 15 pp~l. . ~ The tree will be removed and. the casing cut off 3' below grade during the summer of ~ 994. Distribution: orig - Well File c - Operator c - DNR/DOG c ~ Database c - Rpt File c - Inspector Inspector (s)' Doug Amos FI-000 (Rev. 3/93) B99HCZBD.XLS NORTH SLOPE bdROUGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELDS P.O. Box 1120 Barrow, Alaska 99723 Phone: (907)~_852-0395 / Fax: (907) 85:5-8971 ANCHORAGE LIAISON OFFICE 3201 C Street, Suite 602 Anchorage, Alaska 99503 Phone: (907) 561-8820 Fax: (907) 562-1940 BILL BROWER, Director January 31, 1994 Attn: Dave Johnston, Commission Chairman Blair Wondzell, Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501-3192 RE: APPLICATIONS FOR SUNDRY APPROVALS TO PLUG & ABANDON THE NSB #3, #4, #5, #6 AND SB #17 WELLS Gentlemen: Enclosed are the applications for the Sundry Approvals to Plug & Abandon (P/A) the above referenced wells. The wellbore schematics for these wells are also attached. All of these wells are suspended wells which will not produce a commercial supply of gas to the Barrow community. In April of 1979, Husky Oil completed and tested the South Barrow #17 well for the NPR operations. It was determined that this well was not capable of producing commercially and it was lei~ as a suspended but producible gas well. In May of 1987, the NSB #3 wildcat well was drilled and tested. The decision was made not to complete the well for production based on results from drill stem testing and wireline logging. The NSB #4, #5, and #6 wells were drilled and completed in the Sikulik Field during the period from 1987 to 1989. The NSB #6 well was the only well capable of producing commercial quantities of gas. The well produced for a short period until it was shut in on September of 1990 due to freezing problems. The NSB #4 and NSB #5 wells both produced considerable quantities of water. Workovers were performed on the NSB #4 and #5 wells in early 1990. Diesel oil-cement squeeze jobs were attempted on these wells in an effort to shut off water. However, follow up production tests revealed strong water flows which resulted in non commercial gas production and suspension of the wells. On October 29, 1992 Bill Crouch met with the AOGCC to propose and review a program to P/A these wells. Discussions during this meeting resulted in verbal approval of the proposal. The following is a summary of the proposed P/A program: RECEIVED FEB - 7 1994 Alaska uti & Gas Cons. Commission Anchorage o.. NORTH SLOPE BOROUGH NSB #3, #4, #5, #6 AND SOUTH BARROW #17 Sundry Application to Plug & Abandon January 31, 1994 Application prepared by Allen & Crouch, Petroleum Engineers and filed with the Alaska Oil & Gas Conservation Commission on behalf of the North Slope Borough. RECEIVED FEB - 7 1994 Alaska Oil & Gas Cons. Commission Anchorage Alaska Oil & Gas Cons( .~ .tion Commission January 31, 1994 Page Two Well South Barrow #17 NSB #3 NSB #4 NSB #5 and #6 Description of OPeration 1. Pump cement down the tubing until there are good cement returns on the annulus at surface. This will result in completely filling the 2-7/8" tubing and the 7" casing above the existing retainer. 2. Nipple down the Christmas tree and set a marker post or plate. 1. Place a 150' surface plug in the 7" casing with 1" or 2" hose. 2. Nipple down the Christmas tree and set a marker plate or post. 1. Pump a 150' surface plug in the 7"x9-5/8" annulus. 2. Bullhead the tubing full of cement and squeeze the perforations. The glycol heat string will be lei~ in the 2-3/8"x4½" and 4½"x7" annuluses. 3. Nipple down the Christmas tree and set a marker plate or post. 1. Pump a 150' surface plug in the 7"x9-5/8" annulus. 2. Fill the 2-3/8" tubing, 2-3/8"x4½" annulus, 4½"x7" annulus and squeeze the perforations with cement. 3. Nipple down the Christmas tree and set a marker plate or post. Subsequent to Bill Crouch's meeting with the AOGCC in October of 1992, we obtained funding approval for the P/A program and ordered the permafrost cement. Pending final approval from the commission, ice roads will be constructed to the wells and the P/A work will be scheduled to begin on or about the first week in March. If you have any questions or require additional information, please contact me at the Barrow office. Sincerely, John A. Fanto Petroleum Engineer Allen & Crouch RECEIVED FEB - 7 1994 Alaska Oil & Gas Cons. Commission Anchorage ' STATE QF ALASKA ~/ . .'~-~' ASKA OIL AND GAS CONSERVATION CC. --'~;IISSION APPLICATION FOR SUNDRY APPROVALS. "i " ' 1. Type of Request: Abandon ~ Suspend __ Operation shutdown .__ Re-enter suspencled well __ Alter casing __ Repair Well .__ Plugging .3[.. Time extension m Stimulate m Change approved program ~ Puli tubing ~ Variance ~ Pedorate t I 2. Name of Operator North Slope Borough - Barrow Gas Fields , 3. Address P.O. Box 1120, Barrow, AK 99723 5. Type of Well: Development Explor~ory Stratigraphic Service Location of well at sudace 2181' FEL, 2641' FSL Sec 5, T21N, RI?W, U.M., AK 2295 feet Plugs(measured) None 2295 feet At top of productive interval Same At effective depth Same At total depth Same "12. Present well condition summary Total depth: measured true vertical Other _._ 6. Datum elevation (DF or KB) 46.6' KB feet 7. Unit or Property name ..~.' North Slope Borough 8. Well number NSB #4 9. Permit number 87-74 10. APl number 50_023-20023 Field/Pool Sikulik Effective depth: measured 2267 feet Junk (measured) None true vertical 2267 feet Casing Length Size Cemented Measured depth Structural N/A N/A N/A N/A Conductor 55' 20" ?5 sx. Perm. 155' Surface 152' 13-3/8" 271 sx. Perm. 152' Intermediate 1277' 9-5/8" 1276 sx. Perm. 1277' Production 2287' 7" 150 sx. "G" 2287' Uner N/A N/A N/A N/A Perforation depth: measured 2138'-2162', 2166'-2196', 2212'-2232', 2242'-2258' at 4 JSPF True vertical depth N/A 55' 152' 1277' 2287' N/A true vertical Same RECEIVED Tubing (size, grade, and measured depth) 4{" 12.6# N-80 at 2123' w/packer at 2105' 2-3/8" 4.7# N-80 stung into PBR at 2114' Packers and SSSV (type and measured depth) Ava 7" Permanent Hydraulic Packer at 2105' 13. Attachments Description summary of proposal ~ Detailed operations program m FEB - 7 1994 -~,~a 0il & ~ Cons. 0rage BOP sketch __ 14. Estimated date for commencing operation 115. March 1, 1994 .... 16. If proposal was verbally approved Oil ___ Gas ~ Blair Wondzell 10/27/92 Name of approver Date approved I Service "17. I hereby certify that tl~e foregoing is true and ~.orrect to the best of my knowledge. Status of well classification as: Suspended.3L NSB #4 2181' FEL, 2641' FSL Sec 5, T21N, R17W, U.M., AK 20" 94# H-40 Csg @ 55' In 26" Hole Wellbqre Schematic Elevations BHF = 27.5' KB = 46.6' FMC Wellhead 13-3/8" 72# S-95 Csg @ 152' In 17~'' Hole Arctic Pack 9-5/8" 53.5# S-95 Csg @ 1277' In 121/4'' Hole 2-3/8" 4.7# N-80 Tbg @ 2108' 4%" 12.6 # N-80 Tbg @ 2123' Ava Circulating Sub w/9 Ports @ 2100' 7" 32# N-80 Csg @ 2287' In 81t'' Hole Ava Packer @ 2105' Ava 2-3/8" PBR @2114' 2.3/8" Shear Sub @ 2123' PBTD @ 2267' Perforations @ 4JSPF · 2138'-2162', 2166'-2196' 2212'-2232', 2242'-2258' RECEIVED FEB - 7 1094 Note: The Heat String (Tbr4%%2-3/8" annulus) contains glyc~aaka 0t! ,& Oas 00~lS. G0~nljtsic~, AH Measurements Are KB NORTH SIA)PE BOROUGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELDS ANCHORAGE LIAISON OFFIC[ P.O, Box 1120 3201 C Street, Suite 602 Barrow, Alaska 99723 Anchorage, Alaska 99503 Phone: (907) 852-0395 Phone: (907) 561-8820 Fax: (907) 852-8971 Fax: (907)562-1940 BILL BREWER, Dlreotor February 11, 1994 Attxx: Blair Wondzell, Senior Petroleum Engineer Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501-3192 RE: ADDENDUM TO THE APPLICATION FOR SUNDRY APPROVALS TO PLUG & ABANDON THE NSB #4 WELL Dear Blair: Per our recent telephone conversation, this letter is to serve as an addendum to the application for Sundry Approvals for the NSB #4 well. It has been agreed that a 1.50 ft, surface cement plug be placed down the 2-3/8"X4-1/2" and 4-1/2"X7" annuluses to permanently seal this well. This has been added to the proposed P&A program, The new description of operation for the NSB #4 well is as follows: le 4, Pump a 150' surface plug in the 7"X9-5/8" annulus. Bullhead 'the tubing full of cement and squeeze the perforations. Pump ~3.9 bbls, of cement down the 2-3/8"X4-1/2" annulus. Pump e2.46 bbls. of cement down the 4-1/2"X7" annulus. This will result in a :~150' surface plug in both annuluses, Nipple down the Christmas tree and set a marker plate. If you have any questions or I can be of further assistance, please contact me at the BarroW office. RECEIVED FEB ~ 1 1994 .O it & Sas Cons, And~rage .- Sincerely, A. Fanto, Petroleum Engineer Allen & Crouch .~Ol~'lI SLOI~E BOI~OUGI! DEPARTMENT OF INDUSTRIAL. DEVELOPMENT BARROW GAS FIELD DEVELOPMENT 3201 C Street, Suite 602 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: October 17, 1988 TRANS.~: 8810170-NSB REFERENCE: Well Test Reports NSB ~4, #5 & ~6 The following technical data is being submitted herewith. Please acknowledge receipt, by signing and returning a copy of this transmittal to the North Slope Borough, attention Mr. Erik A. Opstad.~ ENCLOSED INFORMATION SUMMARY Submittal NSB ~4 NSB ~5 NSB ~6 Well Test Reports X X X Received By: RECEIVED / OCT 2 .~ 1988 ~ :~? ,' Z4', Cons. Commi~sion ' "~' / ./) Alaslm Oil &Gas A, O, G, C.C. / Date Anchorage NORTH SLOPE BOROUGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELD DEVELOPMENT 3201 C Street, Suite 602 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: May 12, 1988 TRANS.#: 8805122-NSB REFERENCE: NSB #4 Cased Hole Well Logs The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this transmittal to the North Slope Borough, attention Mr. Erik A. Opstad~ Submittal ENCLOSED INFORMATION SUMMARY Bluelines: ~--1) 1 Collar Log Sepia: 1) 1 For Each Enclosed Blueline NSB #4 X Received By: A.O.G.C.C. / Date NORTH SLOPE BOROUGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELD DEVELOPMENT 3201 C Street, Suite 602 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 REFERENCE :~~ Well Logs DATE: April 12, 1988 TRANS.#: 8804120-NSB The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this transmittal to the North Slope Borough, attention Mr. Erik A. Opstad~~/ ENCLOSED INFORMATION SUMMARY Submittal NSB #4 Bluelines: Sepia: Received By: 1) Differential Temperature/Gamma Ray X 2) Acoustic Cement Bond Log X 1) Temperature (As Above) 2) Bond Log (As Above) X X A.O.G.C.C. / Date STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION C(%IMISSION 3001 Porcupine Drive Anchorage, Alaska 99501 (907) 279-1433 TO: Receipt of the following material which was transmitted via is hereby acknowledged: QUANTITY DESCRIPTION Copy sent YES, to sender NO X L~ :: : ;. 5184 NORTH S PE BORO.UGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELD DEVELOPMENT 3201 C Street, Suite.602 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: February 1, 1988 TRANS.#: 8802010-NSB REFERENCE: NSB #4 Application For Sundry Approvals The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this letter to this office, attention Mr. Erik A. Opstad. ENCLOSED INFORMATION SUMMARY Submittal NSB #4 Application For Sundry Approvals (Fm 10-403) X Description Summary of Proposal X Detailed Operations Program X Section Well Log (Figure 1) X Completion Design Sketch (Figure 2) X B.O.P. Sketch (Figure 3) X Routine Core Analysis (Appendix I) X XRD, Iron & Acid Solubility Analysis (Appendix II) X Fracture Treatment Program (Appendix III) X ** Note: Ail Data Submitted In Triplicate ** RECEIVED FEB o 1 1988 Alaska 0ii & Gas Cons. Commission Anchorage STATE OF ALASKA ALAS, -,OIL AND GAS CONSERVATION CON 'SION APPLICA,,ON FOR SUNDRY APPROVALS 1. Type of Request: Abandon [] Suspend [] Operation Shutdown [] Re-enter suspended well ~r~-'~Alter casing Time extension [] Change approved program [] Plugging [] Stimulate ~'~ull tubing [] Amend order [] Perforate ~'Other 2. Name of Operator 5. Datum elevation(DF orKB) North Slope Borough CH = 27.5' (KB = 46.6')feet 3. Address 6. UnitorPropertyname 3201 "C" Street, Suite 602, Anchorage, Alaska 99503 South Barrow 4. Location of wellatsurface 2180' FEL, 2641' FSL, Sec. 5, T21N, R17W U.M. Alaska 7. Well number NSB #4 Attop ofproductiveinterval As Above Ateffectivedepth As Above Attotaldepth As Above 8. Permitnumber 87-74 9. APInumber 50-- 023-20023 10. Pool Wildcat · Present well condition summary Total depth' measured true vertical 2295' 2295' feet Plugs (measured) feet 2267' Effective depth: measured 2267 ' true vertical 2267' feet Junk (measured) feet N/A Casing Length Structural 36' Conductor 133 Surface 1258 Intermediate Production 2268 ' Liner Perforation depth: Size Cemented 20" 75 sxs. Perm. 13-3/8" 271 sxs. Perm. 9-5/8" 1276 sxs. Perm. Measured depth ~ueVerticaldepth 55' 55' 152' 152' 1277' 1277' 7" 150 sxs. "G" 2287' 2287' measured Well is not currently perforated, true vertical See Above Tubing (size, grade and measured depth) Not compieted; no tubSng 5nstalled Packers and SSSV (type and measured depth) No packers 5nstalle'd; subsurZace valves not employed. 12.Attachments Description summary of proposal ~ Detailed operations program E~F'"BOP sketch 13. Estimated date for commencing operation March 1, 1988 14. If proposal was verbally approved Name of approver Date approved 15. I hereby certif~.-~~'C~~s:.tr.~nd_corre~gt t_ ..~. o. the best ..of my knowledge Commission L~se only Conditions of approval Approved by 'ORIGINAL SIGNED ElY LONNIE C. SMITH Form 10-403 Rev 12-1-85 Notify commission so Iq Plug integrity ,~'B~l~resentatijeTest Locationmay witneSSclearancell Approval Approved Copy Returned NO. Commissioner Date by order of the commission Date ,¢~ -' J --F~) Submit in triplicate~. NORTH SLOPE BOROUGH DEPARTMENT OF INDUSTRIAL DEVELOPMENT BARROW GAS FIELD DEVELOPMENT 3201 C Street, Suite 602 Anchorage, Alaska 99503 Phone: 907-561~8820 NORTH SLOPE BOROUGH WET,T, #4 PROPOSED OPERATIONS SUMMARY February 1, 1988 During April of 1987, the North Slope Borough drilled exploratory well NSB #4 on a linear structure roughly 5 miles south of existing production in an effort to expand gas supplies for the village of Barrow, Alaska. NSB #4 was successful encountering minor gas in several Lower Cretaceous sands, and a significant accumulation in the targeted Barrow Sandstone (Figure 1). Subsequent analysis of open hole DST and wireline data suggested an OGIP of approximately 22 Bcf. The reservoir rock consists of very fine to fine grained sandstone (Appendix I) with good porosity, but only fair permeability due to relatively high clay fraction (Appendix II). During the 1988 season, the North Slope Borough intends to re- enter, complete and stimulate NSB #4 as preparation for evaluation testing. The completion design planned for NSB #4 (Figure 2) was successfully implemented in East Barrow #19 during 1987, raising average daily production to 1175 Mcf from 600 Mcf. These results, coupled with similar increased in deliverability observed from the stimulation of SB #13, clearly support the proposed completion design and procedures. Specifically, the North Slope Borough intends to reenter NSB #4 which was suspended in April of 1987, perforate the Barrow Sandstone from 2112 to 2233 MD BKB (-2066 to -2184 subsea) at 4 shots per foot, set packer, install a 4-1/2" glycol circulation string, run 2-3/8" production tubing, install tree, rig-down, rig-up Halliburton, fracture treat the Barrow Sandstone, and test. We expect the above procedures to be completed in approximately two weeks from the anticipated start-up date of March 1, 1988. NSB #4 DETAIT~D OPERATIONS PROGRAM The following details the operations program for NSB #4 as anticipated beginning March 1, 1988: qe · · · · · · · · 10. 11. 12. 13. General rig-up of Grace Rig 211, Accept rig on or about 02-15-88. Observe well; N.D. FMC Tree; R.U. B.O.P. (Figure 3) and test to 3000 psi; R.U. Choke, Kill & Flare Lines. R.I.H. for gauge ring/junk basket run, displace, circulate and filter 10.0 PPG KCL/NACL Fluid. R.I.H. with perforating gun, shoot 2110'- 2235' MD @ 4 SPF, P.O.H.; Observe well. R.I H with Baker Packer and set @ 1900' P.O.H.. Install and test 4-1/2" pipe rams in B.O.P. to 3000 psi; R I H with 4-1/2" INT Csg to 1880' Land & lock in screws. P.U. - B.O.P., install 2-3/8" rams and test to 3000 psi' R.I H. with 2-3/8" Tbg to 2060' Land; Test to 1500 psi. N.U. FMC Tree & Test to 3000 psi. R.D. and release rig. R.U. Halliburton and fracture treat well per attached procedures (Appendix III). R.U. Choke and flare lines; flare to clean up well (5 - 7 days); Shut-in well. R.U. Lubricator & test; R.I.H. with gauge for 4-Point Back Pressure and Buildup Tests, Run Tests. P.O.H. R.D. Test Equipment; R.U. Kill Line, kill and suspend well with diesel. 14. Observe well, note wellhead pressure; R.D. FIGURE 1. Potentially Productive Lower Cretaceous Sandstones Upper & Lower Barrow Primary Reservoir Perforate @ 4 SPF 2110' - 2235' North Slope Borough Well NSB #4 Proposed Completion Design FIGURE 2 FMC WELLHEAD 20" CSG @ 55' 13-3/8" @ 152' In 17-1/2" Hole 9-5/8" CSG @ 1277' In 12-1/4" Hole 7" CSG @ 2287' In 8-1/2" Hole Arctic Pack 2-3/8" TBG @ 2060' 4-1/2" INT CSG @ 1880' Baker Packer @ 1900' Perforations @ 4 SFP 2110'- 2235' MD BKB Plugged @ 2267' TD @ 2295' FIGURE 3 3.75' 11" X 5000# Hydril ' x 5000# _ Hydril Double Gate if' x5000# Mud Cross 11" x 5000# Cameron Single Gate _ 4.13 ! 2.57 ! 1.74 3.05 B. O. P. STACK AVAILABLE FOR RIG #211 N.S.B. GAS PROJECT CORE LABORATOR I ES, I NC. North S[ope Borough NSB Wildcat #4 Date : 5-May-87 Fire No. : BP-3-1216 Laboratory : Anchorage DEAN-STARK CORE ANALYSIS - SIDEWALL CORE SAMPLES SAMPLE DEPTH PERM MD NO FEET HORIZ Ka 1 1598.5 NA 2 1600.0 NA 2.1 2124.0 58.9 3 2156.0 21.8 4 2158.0 44.7 5 2160.0 66.6 6 2161.0 NA 7 2163.0 188.5 8 2165.0 10.4 9 2165.0 NA 10 2167.0 48.2 11 2170.5 21.1 12 2175.0 16.3 13 2178.0 26.1 14 2178.0 NA 15 2183.0 22.1 16 2187.0 34.2 17 2192.0 21.3 18 2195.0 NA 19 2201.0 13.8 20 2205.0 8.0 21 2211.0 7.1 22 2212.0 9.6 23 2213.0 5.4 24 2214.0 7.4 25 2215.0 70.2 26 2216.0 27.8 27 2217.0 NA 28 2219.0 114.5 HE OIL% WTR% GRAIN POR POR POR DEN M 18.4 ' 8.7 88.6 2.73 28.1 5.2 83.8 2.70 23.1 0.0 88.6 2.67 24.1 0.0 84.7 2.66 26.7 0.0 89.0 2.65 27.2 0.0 93.3 2.75 24.9 0.0 95.6 2.66 29.3 0.0 94.6 2.63 20.4 0.0 93.8 2.68 13.9 0.0 87.8 2.68 28.8 0.8 90.2 2.63 25.1 0.0 89.0 2.69 21.7 0.3 92.9 2.65 26.6 0.0 93.5 2.64 23.9 0.0 85.0 2.66 24.1 1.0 88.1 2.64 27.4 0.9 90.5 2.65 26.8 0.0 88.2 2.65 30.2 0.0 90.4 2.66 25.1 0.7 84.5 2.64 24.6 0.2 81.0 2.73 21.1 0.1 79.2 2.66 22.6 0.0 84.8 2.65 21.4 0.5 80.2 2.65 23.2 0.5 78.4 2.72 25.3 0.'~ 90.2 2.71 26.0 0.0 88.6 2.66 26.7 0.0 92.8 2.66 28.0 0.1 88.3 2.65 DETAILED LITHOLOGIC DESCRIPTION (1) SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SLTST, SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT BL GY, VFGR, SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 4% LITH FRAGS, 30% MTRX BL GY, FGR, SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 2% LITH FRAGS, 30% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, MOO SRTD, SBRD, S CALC, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX, LAM BL GY, VFGR, SLTY, MOO SRTD, SBRD, S CALC, P CMT, 70% QTZ, 2% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, MOO SRTD, SBRD, S CALC, P CMT, 70% QTZ, 2% BIT, TR PYR, TR LITH FRAGS, 30% MTRX .. BL GY, VFGR, SLTY, MOO SRTD, SBRD, S CALC, P CMT, 70% PTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, WL SRTD, SBRD, P CMT, 80% QTZ, TR LITH FRAGS, 30% MTRX LT BL GY, SDY, MOO CONS, TR BIT BL GY, VFGR, SLTY, MOO SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, MOO SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, TR BIT, 30% MTRX BL GY, VFGR, SLTY, MOO SRTD, SBRD, CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 73% QTZ, TR LITH FRAGS, 27% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX, * BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX, THN LAM BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS~ 35% MTRX, THN LAM BL GY, VFGR, V SLTY, P SRTD, SBRD, V CALC, P CMT, 65% QTZ, ~R LITH FRAGS, 35% MTRX, CAL CMT ZONE BL GY, FGR, M SRTD, SBRD, TR CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, FGR, M SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, FGR, M SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, FGR, P SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX CORE LABORATORIES, I NC. North Slope Borough Date : 5-May-87 NSB Wildcat #4 File No. : BP-3-1216 Laboratory : Anchorage DEAN-STARK CORE ANALYSIS - SIDEWALL CORE SAMPLES SAMPLE DEPTH PERM MD HE OIL% WTR% GRAIN NO FEET ltORIZ Ka POR POR POR DEN M 29 2220.0 NA 25.9 0.0 88.1 2.72 30 2223.0 362.4 27.3 0.2 93.2 2.65 SS, LT 32 2225.0 265.6 29.7 0.0 91.5 2.67 SS, LT 33 2228.0 1195.9 27.2 0.0 94.0 2.72 SS, LT 34 2229.0 NA . 28.0 0.0 85.9 2.68 SS, LT 35 2231.0 127.7 26.4 0.0 91.8 2.66 SS, LT 36 2234.0 108.0 27.6 0.2 88.0 2.74 SS, LT 37 2240.0 58.8 27.6 0.6 85.3 2.65 SS, LT 38 2245.0 68.1 28.7 0.5 0,5.5 2.67 SS, LT 39 2255~0 NA 25.1 0.0 79.7 2.67 SS, LT 40 2261.0 61.9 26.4 0.0 84.2 2.66 SS, LT 41 2272.0 NA 30.3 0.0 98.2 2.70 SS, LT DETAILED LITHOLOGIC DESCRIPTION (1) SS, LT BL GY, VFGR, P SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX, THN LAM BL GY, FGR, P SRTD, SBRD, P CMT, 80% QTZ, TR LITH FRAGS, 20% MTRX BL 6Y, FGR, P SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, FGR, P SRTD, SBRD, CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX * BL GY, FGR, P SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SL SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VF6R, SL SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, 3% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, TR LITH FRAGS~ 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, 3% LITH FRAGS, 30% MTRX NA - NO DATA AVALIABLE, SAMPLE FAILURE (1) - PERCENTAGE ESTIMATES ARE FROM PERCENTAGE COMPARISON CHARTS AND ARE THEREFORE APPROXIMATIONS * - FRACTURED SAMPLE II XIGN~J~V CHIEMICALf~-SE:ARCH AND DE:V£LOPME:NT ' PARTME:NT HALLIBURTON SERVICES DUNCAN. OKLAHOMA LABORATORY REPORT No T11-B091-87 To, . o Mr. M. B. Sulley Date December 29, 1987 Halliburton Services Anchorage~ AK This report is the property of Halliburton Services and neither it nor any part thereof nor a copy thereof is to be published or disclosed without first securing the express written approval of laboratory management; it may however, be used in the course of regular business operation by any person or concern and employees thereof receiving such report from Halliburton Services. We give below results of our examination of submitted sidewall samples. Submitted by Marked North Slope Borough Well: NSB No. 4 Location: North Slope, AK Depth: 2,129-2,231 feet Date Received: December 11, 1987 Purpose These formation sidewall cores were submitted for the following tests and examinations: x-ray diffraction, acid solubility, and iron content. Conclusions Results of the tests and examinations completed are presented in the Data Section of this report. · the private information of the above named party, is limited to the sample(s) described; accordingly, any user of this report agrees that Halliburton shall not be liable for any loss or damage, regardless of cause, ,ncluding any act or omission of Halliburton, resulting from the use of the data reported herein; and Halliburton makes no warranties, express or implied, whether of fitness for a particular purpose, merchantability or otherwise, as to the accuracy of the data reported. PAGE: N6: 2 ?-~ T 1 l-B091-87 HALLIBURTON CHEMICAL LABORAT, ~' REPORT NO Data Qualitative X-ray Diffraction, Iron Content, and Acid Solubility Analyses Purpose: To identify the types and relative quantities of minerals in the formation sample. Procedure: A pulverized one gram sample is placed in an x-ray beam and rotated through an arc. The x-ray beam is diffracted by the sample and the diffraction patterns are recorded. Results: The diffraction patterns are used to identify the types of minerals present and their relative quantities. The relative quantities for the submitted samples are as follows: Sample No. 1 2 3 4 5 6 Depth (feet) 2,129 2,158 2,212 2,216 2,223 2,231 HC1 Solubility* Iron Content** 2.0% 2.1% 2.4% 6.2% 5.0% 5.1% 1.09% 1.19% 1.18% 2.87% 3.20% 2.96% Quartz 55-65% 55-65% 50-60% 65-75% 65-75% 75-85% Feldspar 2-5% 2-5% 2-5% 0.5-2% 5-10% <0.2% Dolomite 0 0 0.5-2% 0 0 0 Calcite 0 0 0.5-2% <0.5% 0 0 Kaolinite 5-10% 5-10% 5-10% 5-10% 2-5% 2-5% Illite 5-10% 5-10% 5-10% 2-5% 2-5% 2-5% Mixed Layer 10-15% 10-15% 10-15% 5-10% 5-10% 2-5% Chlorite 5-10% 5-10% 5-10% 2-5% 2-5% 2-5% Siderite <0.5% <0.5% <0.5% 5-10% 2-5% 2-5% *One gram of sample is added to 0.5N HC1. After reaction, the excess acid is titrated with 0.2N NaOH. The results are calculated and reported as calcium carbonate. (Note: a pure dolomite will be reported as 108%). **One gram of sample is added to concentrated HC1. After reaction, the dissolved iron is titrated with Potassium Dichromate and reported as perceqt by weight. · the private information of the above named party, is limited to the sample(s) described; according!y,, any user of this report agrees that Halliburton shall not be liable for any loss or damage, regardless of cause, including any act or omission of Halliburton, resulting from the use of the data reported herein; and Halliburton makes no warranties, express or implied, whether of fitness for a particular purpose, merchantability or otherwise, as to the accuracy of the data reported. ,.PAG~'NO. HALLIBURTON CHEMICAL LABORATO.~..Y REPORT NO.i T1 1-1~0g l-g7 Core Sample Disposition There was no sample remaining after completion of the requested tests. Keywords Los Angeles Division 'North Slope Borough North Slope Alaska Sidewalls sandstone NSB No. 4 Abstract X-ray showed the cores to be sandstone with very little solubility to HC1. Iron content ranged from 1.09-3.20%. Data Book Reference The data presented in this report are recorded in Analytical Book No. 6282, page 58. cc: Mr. F. M. Glasscock/Mr. J. E. Diller Dr. S. W. Almond Mr. R. A. Kunzi Mr. R. M. Lasater Dr. L. E. Harris Laboratory Analyst Burns-Loghry rdf Respectfully submitted, HALLIBURTON SERVICES By /~'-~' /~'~2/2~~) B.J. Burns I-q-gU N aT! CE' .hi..epa... p.e.a.ed by a.d is ,he p,ape,,y o, .a,,~b.rto. Serv,c.s, a .ivisio.., .o,,ib..,on Compo.y; the data reported, Intended for · the private information of the above named party, is limited to the. sample(s) de~ribed; accordingly, any user of this report agrees that Halliburton shall not be liable for any loss or damage, regardless of cause, including any act or omission of Halliburton, resulting from the use of the data reported herein; and Halliburton makes no warranties, express or implied, whether of fitness for a particular purpose, merchantability or otherwise, os to the accuracy of the data reported. Appendix III Danesh¥ Frac'ture Geometry ---F'ROF' II dob Type- FOAM Fracfurinq Service NORTH SLOPE BOROUGH,NSB $4.BARROW SAN]). BARROW FIELD. ALASKA 50% iiEI'HANOL.~(~ ~,'H WG-it,;~ GAL/M SEH-7,58 ¢./M I~AC-~ WeLL & Formation Data Young'$ modulus F'ermeab i l i ty F'or os i fy .... , Reservoir f[ui~l compres$ib} Lily Reservoir fluid viscosity BHTF'~ .............. ~445, Reservoir fluid pre~m'ure .... CLosure stress ......... i2¢9, Gr'o~s fracture height ..... . , Net fracture heiqht ....... t28, We[[bore diameter , , , ..... 6.28 ~rainaqe radi~ ,, ... , .... WelL spacing ...... , .... ~29, - Bottom-ho [e temperature ., Treatment Data : In.iect ion rate ....... i ~ 5¢~E+06 psi 15.: 008¢ md t9.0 pct 8~30E-¢5 t/psi CP Psi psi psi ft ft ft 65, .: .~.:. d eq F Treatment fl. uid sp qr , - Cw - f[uid-[o~s coef Sp t [ - ur vo ume Cvc - spurt-l.o~s coef., Spurt time .... ~ ....... Damage ratio ........... Surface temperature ....... Surface fluid temperature Apparent vi~cosi ty ........ 28e, FLuid parameters: B~e Ftuld ' Two-Pha~e FLuid Yield m'fress -- i 2,0 · bpm 0,4.4i ' (~, 0825~) ft/SQRT(n~i n) e,e02t4 ft/SQRT(mi n) rain · de~ F. deq. F cp at ¢,2 in, width Lb f-sec lsq ft [b fts~ ft 5e_~iqn VoLume Created Pad Propped Total F'rod FLuid No Total Pad Length Wici, Width Length Ht~ F'rop Incr Eft (i¢(~¢ qal.) (ft) (in,) (in.,) (f±) (f±) (_~:x) (pet) i 8,6 3,¢ iiO,6 e.i8 r~.i3 'i6,5,8 i50,.0 'i40, t,9 42,6 iCYH f~(::am Trc-..a tm¢-r~ and Foam Frac+.urinq Ca l. cul. a~tion_~ ~ased c.,n Constant Liquid and Constant Internal-Phase Volume Fraction with F'roppant Added to ;?p¢-cified Sfa~e Vol. umes a n d ~~J.~D~~,~-=~P_~_O--_f_t~gJ ~T_u b i n NORTH SLOPE BOROUGH,NSB ~4,~&p~%~_~BARROW FIELD,ALAYKA 50% METHANOL,SO ~/M W6-.tt,S 6AL/M ~EM--7,5~ ¢,:M WAC-? Trea$inq. ~chedu£e Stage Gal. l-on5 Prop Conc Tota£ Number Foam [b/qa [ Foam Proppant . 2t5. ~['of' foam di~p[acemen~ or 6~-C,-4t5t.. ~cf of-.nitro~en di~p~acemenJ . :' ' "~ ~.':~: L"/',~uid'~'"a~'d F'r'o'P~ant Pump inq Li~id F'ro~pant VoLume' .. Conc. qa~ '" [b/q~l ~i~ ~tage t 2 '5 · . Total or 6B or" 6C Pump i nq Time m J n: sec 5:57 2:4 2:te 2:i5 4:4t. i'. t2ee,--' . · 4t8, 454. 945, - , ' . t7: 8 S454. e'~5 fi8, 4,58 6.60 8.47 Liquid + Prop VoL 527. 59~,~ .-. t3e7. t'24 nitrogen di~pI, acement 8:38 nitroqen disptacement CumuLative Proppant iO00~ 6000~ ~chedu I.e Rate N2 Out Vo£ume bpm -: mscf 4,8~ 23,7 5,32' 7,7 5.80 7.4 6.24 7.2 6.64 F'roppant: Type 20/40 Ottawa 20/40 Ottawa 20/40 Ottawa 20/40 01'tawa N2 Rate ~cfm 3986. 3694 ~ 3424, St76. - t3.8 2948, 46,88. 59.8 t t8, 4.,8~ 2.2; at 2948. $cf/min at~ 660t, scf/min ~_~a nd sand sand sa nd Surface VoL Tot qa[ 2452. 849. 89t. t958. 7064. 2t5~ L.i,~uid pu.~)p rate,,, ........ i. Interna [-pha~e fraction Tofa[ vol. ume of foam I.e~.~ flush Final bottom-hole we[[bore f[~id temp L iq ti i d dens i t y .................. Bottom-hoLe treating pre~re in frac In~f~ntaneous ~hut-in pressure - N2 Ins'tanfaneou~ ~hut-in pre~'~ure - fo~m Haxim~m friction [o~ in we[[bore., Average per for~fion friction ..... Ma~;'i:mum~e[~l.h'e'~'~d frea~ inq pre~:~:ure~ WeLLhead fr'e~fing pr'e~'ur'e for p~d, ~,~"~'~ for trea+men~, and qa.s fLu.sh~ N2 for treatment and foam flush 4.80 bpm 6r~, 8000 ~ 67, 7.75 t445. t748. 990. t726. 2t54. 6~,9 bpm pet qa[ F [b/qa [ psi psi psi psi psi psi psi m_~cf--pl, us cool.-down m~cf---pLus coo [-down a3 /,.1. ! ~eue3 SSel , w ! ([ ( ~Ol_q (~) 1 Pu ! ~ po.Id 8£'0 ~,s/ql 1 e~/ql UO! .i. e J.}.um ::)uo3 $ d 0 ..t,::! pmpum~n~ : -" · leUi,l ~o .. "$~ "I.q~'!mH O- 0 ' 0'0 0'0 '0 duJncI PU3 pine e' llaM Sel !.~o-I,d uo!; !soda(I pu e.s- pues pues eme$~O 0~/02, ~o eme~$O O~/¢g ~o "ON. u~ ! se(I .toj. uo !; ! so¢,.._~, pea ^ ~ NORTIi SLOPE BOROUGll/. DEPT. OF PUBLIC WORKS ClP ~ Barrow Gas Development 3201 "C" Street, Suite 600 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: December 31, 1987 TRANS.#: 87123101-NSB REFERENCE: NSB #1, #2, #3, And #4 MWD Log Sepia The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this letter to this office, attention Mr. Erik A. Opstad. ENCLOSED INFORMATION SUMMARY Submittal NSB #1 NSB #2 NSB #3 MWD Log Sepia X X X X Received By: 0il & Gas Cons. Commisslort Anchorage A.O.G.C.C. / Date NORTH SLOPE BOROUGH/ DEPT. OF PUBLIC wORKs- ClP ~ Barrow Gas Development 3201 "C" Street, Suite'600 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: December 21, 1987 TRANS.#: 87122101-NSB REFERENCE: NSB #1, #2, #3, #4, and SB #7 Geologic Data The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of thi~ letter to this office, attention Mr. Erik A. Opstad. ENCLOSED INFORMATION SUMMARY Submittal ,,-.,, NSB #1 NSB #2. NSB #3 NSB #4 NSB #7 Wlreline S Verification X X MWD LIS .Tapes Verification MWD Log Sepia Diplog Sepia CCL Sepia Well History Received By: A. O. G. C .~C,,-. IAI~7~I & Gas Cons. Commission Anch NORTH SLOPE BOROUGH/ DEPT. OF PUBLIC WORKS - CI, P Barrow Gas Development 3201 "C" Street, Suite 600 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska.99501 DATE: December 9, 1987 TRANS.#: 87120801-NSB REFERENCE: Wireline log sepias; NSB 1, 2, 3 & 4 The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this letter to this office, attention Mr. Erik A. Opstad. ENCLOSED INFORMATION SUMMARY 1) Rolled sepias for all wireline and gas logs on NSB wells 1, 2, 3 and 4. Received By: RECEIVED DEC 0 9 ~o~-~ Rla$1ia 011 & Gas gons. A.O.G.C.C. / Date NORTH SLOPE BOROUGH/ DEPT. OF PUBLIC WORKS - ClP ~ Barrow G~s Development 3201 "C' Street, Suite 600 Anchorage, Alaska 99503 Phone: 907-561-8820 TO: Mr. C. V. Chatterton Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 DATE: 12-24-1987 TRANS.#: 87112402-AK REFERENCE: Summary of Technical Information, STW 855. The following technical data is being submitted herewith. Please acknowledge receipt by signing and returning a copy of this letter to this office, attention Mr. Erik A. Opstad. ENCLOSED INFORMATION SUMMARY uocumen~ NSB ~[ NSB ~2 NSB ~3 NSB ~4 f~ireline Lo_p_g_s * D Lo s ' * Completion Reporn * Core Data * Single Shot Survey * Production Test Charts * 2'd Stage Completion * Pressure Buildup Data * DST Report N/A Gas Analysis N/A Confidentiality Letter N/A . * * N/A * * . * * · N/A * , * · N/A N/A N/A N/A N/A · N/A N/A N/A * * N/A * N/A N/A * * RECEIVED Received By: Alaska Oil & Gas Cons. Commission Anchorage ALA -~,.,. OILAND GAS CONSERVATIOi- ..OMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS ~ SUSPENDED I_ ABANDONED [] SERVICE [] , 2. Name of Operator 7. Permit Number North Slope Borough 87-74 3. Address 8. APl Number 3201 C Street, Suite 600, Anchorage, Alaska 99503 so- 023-20023 ,. , ,, 4. Location of well at surface 9. Unit or Lease Name South Barro~ 2180' FEL, 264'1' FSL, Sec. 5, T21N, R17W U M., Alaska At Top Producing Interval ' 10. Weli Number As Above NSB #4 ,. At Total Depth ~ 1. Field and Pool As Above , , , 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial'"No. Wildcat 27.54' Bradenhead Flange , · Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. 15. Water Depth, if offshore 16. No. of Completions ~2'4/19/87 4/28/87 5/2/87 Susp. N/^ feet MSL N,gne, i7. Total Depth (MD+TVD) 18.PlugBackl~epth(MD+TVD) 19. Directional Survey I 20. Depth whereSSSV set 21. Thickness of Permafrost 2295' MD 2267' MD YES~ NO[[]I _ feetMD 667 (est.) 22. Type Electric or Other Logs Run (MLL/DLL/GR) (GR/EWR/CN¢) (CDL/CN/GR) (BHC/GR) (SWC) (DIP)(.PROLOG),· ,. ' ' (~ASING, LINER AN~CEMENTING RECE'RD 23. .. SETTING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED ,,, , 20" 94.00 H'-40 Sur. face 55 ' 24" 7 13-'3/8 72.0 S-95 Surface 152' 17-1/2" 271 sx.s. Perm.. - 9-5/8" 53.5 S-95 Surface 1277' 12-1/4" 1276 sxs. Perm. - 7" i.. .;32.0 N-80 Surface 2287' 8-1/2 150 sx$. "G" _ 24~ Perforations open to Production (MD+TVD of Top and Bottom and 25. TUBING RECORD interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) . v 26. ACID, FRAC"~URE, cE['MENT SQUEEZE, ETC. Not Completed ~ ' ~.:. r~ ...... ~ .... DEPTH INTERVAL (MD) AMOUNT& KIND OF MATERIAL USED , Alaska Oil & a,~ Cons,, ,, 27. PRODUCTION TEST , . ,',, , , , Date First Production I Method of Operation (Flowing, gas lift, etc.) 1 Date of Test Hours Tes't'ed PRODUCTION FOR Gl L-BBL GAS-McF WATER-BBL CHOKE SIZE GAS-OIL RATIO TEST PERIOD I~ · Fl°w :rubing Casing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BBL iOIL GRAVITY-APl (corr) Press. 24~HOUR RATE 28. ' ...... coRE DATA ,,. , Brief description'of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. This description is based on sidewall cores. The primary reservoir section found in NSB #4 is the Upper & Lower Barrow Sandstone which is a minor clastic event in the Jurassic Kingak Shale. This well encountered 98 feet of light brown to greenish brown, fine to medium grain glauconitic sandstone, interbedded with minor siltstones and occasional thin shale stringers. Average sidewall core porosity equals 25.3% kh = 110 md i O ' with Sw estimated from wireline ogs at 50%, all dipping roughly 3 south Gas is present dowj to -2226 and may extend .deeper if reservoir rock is available. No aquifier was encountered. Form 10-407 Submit in duplic~ 29. ? " · · 30. ' GEOLOGIC MARKE ' · ~-t:~i:IMATION TESTS NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. · Permafrost 667 667 Base of permafrost is estimated from MWD logs (GR/EWR) and· drilling rate of penetration · Base HRZ 1362 1362 · BCU 1674 1674 Upper Barrow SS! 2135 2135 DST #1 - Tested 2105--2210 (Inflate Straddle) Flow 1 - Tool opened with good blow, increased Lower Barrow SS 2210 2210 to bottom of bucket in 1 min., gas to surface in 16 min. Base Barrow 2233 2233 DST #2 -Tested 2200-2295 (Bottom Inflate) Flow 1 -Tool opened with good blow; to 25 psi Basement Not Reached - in 15 min. & remained through flow period. Extrapolated shut-in · pressurei' 1023.2 psi. See Attached For ·More ~'~ Detail. . ~,,~ 31. LIST OF ATTACHMENTS D~111 Stem Test, S.W. Core Analysls ~ell 4ogs, Directional Suveys , ~ CD~ 32. I hereby certify that th~~s ~d ~r~ to the best of my knowledge ~ ,, INSTRUCTIONS General' This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1' Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. Item 5' Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24' If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be 'separately produced, showing the data pertinent to such interval. Item 21' Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). Item 23' Attached supplemental records for this well should show the details of any multiple stage cement- ing and the location of the cementing tool. Item 27' Method of Operation' Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28: If no cores taken, indicate "none". Form 10-407 L96I ~LI gBnoao~ adoIS g~aoN gsTBoIoaD 6uT$InsuoD · ~ooaaoo pu~ onaA s! oAoc~ qBnoao~ odoIS qSaoN ao~ sSa~q0 XoAanS 00A0~ I~U!B!a0 oq$ POao!AoM ~A~H'I · p~aa o$ ~inoi~g!p Sa~go 00&0A :~P aIq~uoT~sanb se~oTPUI (~) 'E gbnoao8 adoIS gSaON ~ go uo!s!Aladns ag$ aapun IaUUOSaad 6u!II!aG ao~aD Xq uaM~g aaaa SXaAanS 'I :sa~ON s~aB~Q 0g'0 ~s~ab~Q 00'I s~aB~Q §L'I s~aB~G 00'I ~ 06EE 06£ 091 UOT~eTAaa gogs aI6UTS Kaa-~nS a:[oqIIaM ~ogs aIBU.XS ~D.wCOkId ~IM~I~I0~I~G SgfD MO~t ITl -r Z ITl ITl sa!doD I~U!:l 'oN ri1 · oN- NOII~]~I~ISIO 335. ssaJpp,o' TECHNICAL SERVICES, Security Life B~dg. · Suite 1350 · 1616 Glenarm · Denver, Colorado 80202 · Phone. (303) 573-8027 Contractor Rig No. Grace Drillinq 211 Spot Sec. 5 Twp. 21 N Rng. 17 W Field Barrow Gas Field County North S1 ope State A1 aska Elevation 45' KB Formation Upper Barrow Sand Top Choke 1/4" & 1 Bottom Choke 5/8" Size Hole 8 1/2" Size Rat Hole -- Size & Wt. D.P. 3 1/2" 15.50 Size Wt. Pipe None I. D. of D. C ...... 2" Length of D.C. 276.68' Total Depth 2297' Interval Tested, , ,2!05'- 2210' Type of Test _ Infl ate Straddle Flow No. l_. ( 30 ) 2_8_*____ Shut-in No. 1 (63) 63* Mir, Flow No. 2 (60) 60* Min. Shut-ir~ No. 2 _ ( 60 ) 6 ].* Min '" Flow No. 3___.None T_~aJLc. n Min Min Shut.in No. 3 '11 I1 *Computed Bottom Hole Temp. 70° F Mud Weight 11.2 Gravity -- Viscosity Tool opened @ 05' 05 A K B D G E PRD Make. No 14926 Cap. 1500 Press nitial Hydrostatic A Final Hydrostatic K Initial Flow Kuster K-3 ~ 2114' Corrected 1194.8 1165.5 8 144.1 131.9 Final Initial Flow C Initial Shut.in D 598.1 Second Initial Flow E 100.1 Second Final Flow F 117.1 Second Shut-in G 512.3 Third Initial Flow H I Third Final Flow Third Shut.in J Lyrics Dist. Our Tester'__ Witnessed By' Billinqs MT Sam Jones Pon Chapman C C Did Well Flow - Gas Yes _Oil 'No Water No RECOVERY IN PIPE' 190' Drilling mud = 0.74 bbl. Resistivity' Top- Middle- Bottom' .3 ~ 50°F = 29,579 ppm NaCl., 17,981 ppm Cl. .3 @ 50°F = 29,579 ppm NaCl., 17,981 ppm Cl. .3 @ 50°F = 29,579 ppm NaCl., 17,981 ppm Cl. 1st Flow- 2nd Fl ow- Tool opened with a good blow, increased to bottom of bucket in 1 minute. Gas to surface in 16 minutes; too small to gauge. 'Tool opened with a good blow with gas to surface and remained through flow period. Gas rate to small to gauge. NSB #4 North Slope Borouqh Operator .. / Well Name and No. A K . ~ Recorder Type No. 13827 Depth Inside Outside X DST I',,I o. Kuster K-3 __ Cap 2950 psi 2114 feet Clock Range 2..~_~___4 hrs. Initial Hydrostatic A Final Hydrostatic K Initial Flow B Final Initial Flow C Initial Shut-In D Second Initial Flc,': E Second Final FIo,'; F Second Shut-In G Third Initial Flow H Third 'Final Flow I Third Shut-In J 1198.2 1165.4 157._8_______ 142.5 604.0 107.4 128.2 518_. 9 ~ Recorder Type No. 25933 Depth Inside Outside X ~uster K-3 __ Cap. 3200 2t14 Clock Range 2 psi feet 4 _ hrs. Initial Hydrostat:c A Final Hydrostatic K Initial Flow B Final Initial Flov., C Initial Shut-in D Second Initial F!C,N E Second Final F:c',v F Second Shut-In G Third Initial Flow H Third Final Flov..' I Third Shut-In J 1092.1 1059.4 97.1 86.9 489.8 62.8 77.6 422.7 · UOL2~EDOL U0 pau!eJp olduJes sero aJOLIM .do C5) IdVo /q!AeJO · wdd 6/_cj-, 6 g luoluo9 opuolqO 1o Jo 09 · uJdd 06/_ lUOlUO9 op!Jolqo 1o -Jo 09 o!]eU I!O/Se9 'L3 uJdd-~[8~6'-Z'''[ ,,~ ~. eldw~s l!d PnlAI -- ~ --0' 6 Je~eM dn o~ew "[3oN -~dd--~7~6g = Jo0~ 0 ~:' aLeLl$ 'ii 'n3 aUGN · Go O00I 'M tJ aLdi~-~S --:JoqlO --:seE) -- :pnl, q L)D .............. 'oo --auoN ..... :JOIeAA auoN :1!o '90 O00T. :aldwes to awnloA lelOl 'o9 00~ :Jaldwes 1o awnloA lelOL 6~sd :Jaldwes ul ajnssaJd 'ON L ~'7-6'g 7i7 'ON lO)tO!_L oleg ,0Igg -, cjoIg leAJalUl lsa_L a~ioLS q~aON Xlunoo ~,# USN qBh-~ao~ ~do[$ q:~aoN 'ON ¥ OWeN IIOM Xuedwoo _LI:::::I O d Et I:::1 l::::1:1-1 d IAI ¥8 North Slope Borough O~rator NSB #4 Well Name and No. DST No. RECORDER NO. 14926 DEPTH INITIAL FLOW DT(MIN) PRESSURE(PSIG) 0 144.1 5 152.9 10 164.4 15 114.6 20 116.7 25 126.4 28 131.9 2114 FT. RECORDER NO. 14926 DEPTH F I NAL F LOW DT(MIN) PRESSURE(PSIG) 0 100.1 5 106.3 10 113.9 15 109.9 20 109.2 25 109.6 30 111.1 35 112.6 40 114.0 45 115.1 50 115.7 55 116.6 60 117.1 2114 FT. LY-231 31¥NIN~3130N! '3WflSS3Wd 031¥]OdVWIX3 Z'ZS[ 2'99b I'86§ 09I' 6'2Yt Z'ESb 9'S8S 99I' I'02t 6'££~ 8'S9~ 6ZI' L'S6~ 6'IIb 8'£bS £6I' S'I£~ 2'68£ I'I2§ OtZ' 9'S~ Z'E9~ 9'S6~ 0£Z' 9'8i~ 8'~! 9'206 S'b£~ 982' 9'ZLi 9'682 S'I2~ I06' S'Sgl 6'~Z2 8'90~ I'~l 9'09~ 9'266 96£' 2'~tl 2'Sb2 I'LL6 LS6' 2'0~i 6'822 8'096 0~6' £'~il 0'212 6'666 LOb' 6'SCl S'£6I b'SZC 66b' b'~6 E'SLI 2'LO~ LL~' 2'I~ 9'69 6'I6I 6'S9 8'02I Z'Z§2 b~9' 6'gS 8'0II Z'Zb2 £§9' ~'Z~ 8'L6 L'6~2 669' O'Z~ 6'~8 ~'9~2 ~Z' 6'~t Z'EZ 9'S02 0~8' Z'9£ Z'6~ 9'I6I 606' 0'2£ O'Zb 6'8ZI btO'I Z'9g b'I6 ~'~9I 9ZI'I ~'IE 9'§I S'Z~I ' E9b'I 0'0 6'I6I £9 09 0§ 0P 0£ 9~ 02 8I 9I 0I 6 8 Z 9 6 I 0 'ON J. SO IO0' x ~bs d (91'Sd)da 'NIN 88 (~ISd)a~nssa~a (±a/(±a+±))~oa = I '~II MOIJ IVIIINI NI-I~HS ]VIIINI HIdBQ 9Z6bI 'ON W30~0332 (NIN).LO 'ON pue auJeN IlaAA b# ~SN JoleJ~Id0 ~6noa68 ado'LS q~aON North Slope Borouqh Ol~rator NSB #4 Well Name and No. 1 DST No. DT(MIN) RECORDER NO. 14926 DEPTH 2114 FT. FINAL SHUT- IN TOTAL FLOW TIME' T = 88 MIN. LOG((T+DT)/DT) PRESSURE(PSIG) DP(PSIG) P SQR X .001 0 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 3O 35 4O 45 5O 55 6O 61 1.949 1.653 1.482 1.362 1.270 1.195 1.133 1.079 1.033 .991 .921 · 862 .813 .770 .732 .699 .669 .642 .617 .595 .546 .505 .471 .441 .415 .392 · 388 EXTRAPOLATED PRESSURE' 117.1 128.0 138.9 149.2 158.5 168 6 179 5 188 2 197 4 207 3 215 6 233 1 25O 1 266 1 280 3 294.7 309.9 323.6 336.2 349.2 359.8 390.3 418.0 443.7 467.4 488.3 508.4 512,3 INDETERMINATE 0.0 t0.9 21.8 32.1 41.4 51.5 62.4 71.1 80.3 90.2 98.5 Il6.0 133.1 149.0 163.2 177.6 192.8 206.5 219.1 232.1 242.7 273.3 300.9 326.7 350.3 371.2 391.3 395.2 16.4 19.3 22.3 25.1 28.4 32.2 35.4 39.0 43.0 46.5 54.4 62.6 70.8 78.6 86.8 96.0 104.7 113.0 122.0 129.5 152.4 174.7 196.9 218.4 238.5 258.5 262.5 0'0~ NI-IBHS ]¥NI~ NI-IBHS q¥IIINI ~# ISO '~# BSN HBROWOB ~dOqS HIWON iOqd 0 001; - 0 -- 001; - 00~ - OOE: - 001~' - 00~ - 009 00/_ I ( I I I I I I f I I I I I I I I I 100 . 0 10 .0 1.0 LOG/LOG PLOT 1 IO.O FINAL SHUT-IN INITIAL SHUT-IN DELTA (P) (PST) I 0 100.0 1000.0 :10000 0 1 ~200 . 0 _ 1000.0 _ 800 .0 _ ~00 .0 _ 400 .0 _ ~00.0 _ .0_ GAUGE #f14926. ;::)114' TIME i I 1 .0 40 . 0 80 . 0 (NIIN) i i i i 160 . 0 200 · 0 240 . 0 120.0 m..~ div~..1 ~IWIW~P ~V yq~Pl~wvlmvml vm ~'w,,~,vmv~mvum ,i-'l, mlvlwm~l.~Jmmvv S~,MPLE CHART t [J / TIME lO0 lO t+~t HORNER PLOT 111 1 I11 I ~0 Homer Plot S/ope Breaks Upward Possible Causes (1) decrease in pay thickness away from the wellbore (2) decrease in permeability away from the well- bore (3) increase in viscosity of reservoir fluid (fluid contact) (4) barrier within the radius of investigation SAMPLE CHART J 1 / / ~ / \ TIME HORNER PLOT lO0 io 10 t + /~, I Horner Plot Slope Breaks Downward Possible Causes ( 1 ) increase in pay thickness away from the wellbore (2) increase in permeability away from the wellbore (3) decrease in viscosity away from the wellbore SAMPLE CHART TIME HORNER PLOT 1II1111 II~[] ]1III111 i lit/lit ¢1t1111 l-[ ILl]_t 1:~ 1 ~111111il i IIIlJ1/j ~llllltll i I11~11/ 100 ~G Early Time Deviation of Horner Plot Possible Causes ( 1 ) wellbore damage due to filtrate invasion, dril- ling solids, etc. (2) partial penetration of pay zone (3) plugging or choking of perforations (casing test only) (4) wellbore storage effects (Iow permeability gas wells) SAMPLE CHART TIME HORNER PLOT II ! tllll I 1 , ill l l/ 1111 i · lilll ,i/ llll i - 1111t / 11It ~W I1111 lO0 lo t+At Horner Plot Slope Continually Increasing Possible Causes ( 1 ) well between two parallel boundaries (channel sand) (2) induced hydraulic fractures Very tow permeability. Usually only mud recovered from interval tested. Vir- tually no permeability. Slightly higher perme- ability. Again usually mud recovered. Slightly higher perme- ability. Small recovery, less than 200 ft). Average permeability. Final and initial shut- ins differ by 50 psi. Average permeability. Strong damage effect. High shut-in pressure, Iow flow pressure. Excelent permeability where final flow final shut-in pressure. High permeability where ISIP and FSIP are within 10 psi. Deep well bore invasion or dam- age. Final shut-in higher than the initial shut-in. · --! 0 ITl sa!doO leu!J 'oN £9II · oN ~a~o!± NOIIfl~I21SIQ 33S . ssaJppv' 'ON I. SQ tT~ ~SN 'oN pue ameN Ila~ H,qflN~tO,q -:ldO]c; HI ~ ~EIO/ICE TOOL~ TE'CHNICA'L SERVICES, Security Life * Suite 1350 * 1616 Glenarm * Denver, Colol Contractor Grace Dri 11 i nc] Top Choke 1/4" Rig No. 21 1 Bottom Choke ... 5/8" Spot -- Size Hole 8 1/2" Sec. 5 Size Rat Hole -- Twp. 21 N Size & Wt. D.P. 3 1/2" 15.50 Rng. 7~. W Size Wt. Pipe None Field Barrow Gas Field I.D. of D.C. 2" County . North S1 ope Length of D.C. 27.6.68' State . A1 aska Total Depth 2295 ' Elevation 45' KB Interval Tested 2200'- 2295' Formation Lower Barrow Sand Type of Test Bottom Hole Infl ate A E K 80202 * Phone. (303) 573-8027 Flow No. 1_. ( 30 ) 27* Mir,. Shut-in No 1 (63) 64* Min. Floe, No. 2 ... (60) 59* Min. Shut-ir, No. 2 _( 180 ) 181*.Min Flow No. 3 None Taken Min Shut-in NO. 3 " " M,n. *Computed Bottom Hole Temp. . 70° F Mud Weight 11. ? urav,Lv -- Viscosity Tool opened Outside Recorder PRD Make Kuster AK-1 No 14926Cap. 1500 ~ 2210' Press Corrected Initial Hydrostatic A 1239.9 Final Hydrostatic K 1220.5 Initial Flow B 204.8 Final Initial Flow C 211.5 nitial Shut-in D 806.4 Second Initial Flow E 270.9 Second F~nal Flow F 285.0 Second Shut.in G 961.6 Third Initial Flow H Third F~nal Flow I Third Shut-in J Lynes Dist. Our Tester Witnessed By' Billings MT Sam Jones Ron Chapman Did Well Flow - Gas RECOVERY IN PIPE: Resistivity: Top: Middle: Bottom: 1st Flow' 2nd F1 ow- Yes Oil No Water No 540' Drilling fluid = 2.76 bbl. .3 @ 50°F = 29,579 ppm NaCl., .3 @ 50°F = 29,579 ppm NaCl., .3 @ 50°F = 29,579 ppm NaC1., 17,981 ppm Cl. 17,981 ppm C1. 17,981 ppm Cl. 'Tool opened with a good blow, increased to 25.0 psi in 15 minutes and remained through flow period. Tool Opened with a good gas blow; see gas volume report. North Slope Borough Operalor NSB //4 Well Name and No. DST No. D K Recorder Type Kuster K-3 No 13827 Cap __2950 Depth 2210 Inside Crock Outside X Range.~2_._4__ hr': Initial Hydrostatic A Final Hydrostatic K Inilial Flow B Final Initial Flow C Inilial Shut-In D Second Inilial Flow F Second Final Flow F Second Shut-In G Third Initial Flow H Third Final Flow I Third Shut-In J 1237.8 !217.6_ 199.9 808.6 279.7 964.0 Recorder Type_ No. 25933__ Deplh Inside Outside X Ku s_te~.K_-.3~_ Cap. 3200 m __2210 fee Clock Range__'_24 . hr~ Initial Hydrostatic A Final Hydrostalic K Initial Flow B Final Initial Flow C Initial ShtH-In D Second Initial Flow E Second Final Flow F Second Shut-In G Third Initial Flow H Third Final Flow I Third Shut-In J .1141.9 1125.1 148.8 155.5 70O.9 204.4 215.4 860.9 North Sl_o. pe Borough NSB.__~4 2 Operator Well Name and No. DST N,. I SURFACE FLOW RATE TIME CHOKE SIZE i PRESSURE MCF/D LIQUID REMARKS 0 ]/4" Opened tool for initial flow' 15 ,, 25.0 . 30 " 25.0 Closed tocl for initial shut- .... 0 " Opened tool for final fl ow' . _ 20 " 25.0 58.9 25 " 30.0 66.3 30 " 35.0 73.6 35 " 40.0 81.0 40 " 45.0 88.4 45 " 45.0 88.4 50 " 50.0 95.7 , 55 " 50.0 95.7 60 " 50.0 95.7 Closed toc~ for final shut-in -- -- ___ i , SAMPLER REPORT Company Well Name & No. County Test Interval North Slope Borough NSB //4 Dale Ticket No. North Sl ope. State 2200'- 2295' DST No. ~/_2.9_/87 1183 Alaska Pressure in Sampler' Total Volume of Sampler:__ Total Volume of Sample:__ 45 22OO 1000 psig CC. CC. Oil: None Water: __.No_ ne Mud: 1000 CC, cc. cc. Gas: None Other: None cu. ft. Sample R W' .3 @ 50°F = 29,579 ppm NaCl.,_l_7_,98!_ppm__Cl. Resistivity Make Up Water 9,._0 (a::. 50 Mud Pit Sample ,3 ~ 50 °F of Chloride Conlenl °F of Chloride Content_ 790 29,579 Gas/Oil Ratio Gravity °APl (D Where was sample drained __On 1 ocati on. ppm. ppm. oF Remarks: North Slope Borouqh NSB #4 Ol~erator Welt Name and No. 2 DST No. This pressure chart analysis has been made on the basis of the gas recovery and equations applicable 'to gas recovery tests and thee Horner extrapolation method. 1. The pressure extrapolation plot indicates "steady-state" conditions were not attained during the initial shut-in period. It is therefore, impossible to determine a reliable extrapolated initial shut-in pressure. The pressure extrapolation plot indicates a maximum final reservoir pressure of 1023 psi which is equivalent to a subsurface pressure gradient Qf 0.46 psi/ft at the recorder depth of 2210 feet.' It should be noted that the character of the build-up curve on the extrapolation plot indicates the presence of dual porosity which is probably due to fracture porosity near the well-bore. 2. The Average Production Rate which was used in this analysis, 95.7 M£F/D, is the gas flow rate which was gauged during the last 15 minutes of the final flowing period. 3. The calculated Total Effective Transmissibility of 95.31 md.-ft./cp, indicates an Average Permeability to gas of .0953 md. for the estimated 15 feet of effective porosity within the total 95 feet of tested interval. 4. The calculated Skin Factor of -3.2 indicates no significant well-bore damage was present at the time of this formation test and is indicative of fracture porosity. 5. The evaluation criteria used in the drillstem test analysis system indicate this is a good mechanical test and the results obtained in this analysis should be reliable within reasonable limits relative to the assumptions which have been made. LY-231 North Slope Borough Operator NSB #4 Well Name and No. 2 DST No. TEST PARAMETERS RECORDER NUMBER RECORDER DEPTH ELEVATIO~ DATUM PAY THICK~ESS VISCOSITY POROSITY FRACTION 14926 2210 FT 45 FT (KB) -2165 FT 15 FT (EST) .015 CP .15 HOLE SIZE TEMPERATURE COMPRESSIBILITY 1ST FLOW TIME 1ST SHUT-IN TIME 2ND FLOW TIME 2ND SHUT-IN TIME CALCULATIONS EXTRAPOLATED INITIAL SHUT-IN PRESSURE (PSI) ................. NUMBER OF POINTS USED ................................. SLOPE (PSI SQUARED/LOG CYCLE) ......................... EXTRAPOLATED FINAL SHUT-IN PRESSURE (PSI) ................... NUMBER OF POINTS USED ................................. SLOPE (PSI SQUARED/LOG CYCLE) ..: ...................... 8.500 IN 530 DEG R .85 27 MIN 64 MIN 59 MIN 181MIN INDETERMINATE 1023.2 15 740470.3 AVERAGE PRODUCTION RATE (MCF/DAY) ........................... TRANSMISSIBILITY (MD.-FT./CP.) .............................. FLOW CAPACITY (MD.-FT.) ..................................... PERMEABILITY (MD.) .......................................... PRODUCTIVITY INDEX (MCF/DAY/PSI) ..... · ....................... ESTIMATED DAMAGE RATIO (EDR) ................................ SKIN FACTOR (S) ............................................. PRESSURE DROP DUE TO SKIN (PSI) ............................. APPROXIMATE RADIUS OF INVESTIGATION (FT.),' .................. DRAWDOWN FACTOR (%) ......................................... POTENTIOMETRIC SURFACE (FT.) ................................ 95.70 95.31 1.43 .0953 · 130 .3 -3.2 0.0 8.1 N/C 219.0 LY-231 North Slope Borough Operator NSB #4 Well Name and No. DST No. RECORDER NO. 14926 DEPTH INITIAL FLOW DT(MIN) PRESSURE(PSIG) 0 204.8 5 170.3 lO 172.0 15 196.8 20 205.7 25 209.4 27 211.5 2210 FT. RECORDER NO. 14926 DEPTH FINAL FLOW DT(MIN) PRESSURE(PSIG) 0 27O.9 5 198.4 lO 179.3 15 205.2 20 233.4 25 247.2 30 254.3 35 261.2 40 266.6 45 271.3 50 276.3 55 281.6 59 285.0 2210 FT. LY-231 North S1 ope Borouqh Operator NSB #4 Well Name and No. DST No. DT(MIN) RECORDER NO. 14926 DEPTH 2210 FT. INITIAL SHUT-IN INITIAL FLOW TIME: T = 27 MIN. LOG((T+DT)/DT). PRESSURE(PSIG) DP(PSIG) P SQR X · 001 0 1 2 3 4 5 6 7 8 9 10 12 14 16 18 2O 22 24 26 28 30 35 4O 45 5O 55 60 64 .447 .161 · 000 · 889 · 8O6 · 740 · 686 .641 .602 .568 .512 .467 .429 .398 .371 .348 .327 .309 .293 .279 .248 .224 · 204 · 188 .173 .161 .153 211.5 254.7 295.8 325.3 349.0 369.5 389.1 405.3 420.9 433.8 446.9 469.2 490.0 508.4 524.5 541.1 555.8 570.1 584· 3 597.9 610.8 642 3 674 3 704 6 733 2 761 0 787 7 806 4 0.0 43.2 84.3 113.8 137.5 158.0 177.6 193.8 209.4 222.3 235.4 257.7 278.5 296.9 313.0 329.7 344.3 358.6 372.8 386.4 399.3 430.8 462.8 493.1 521.7 549.5 576.3 594.9 64 87 105 121 136 151 164 177 188 199 22O 240 258 275 292 308 325 341 357 373 412 454 496 537 579 620 65O 9 5 8 8 6 4 3 .1 ~ .2 .7 .2 .1 .5 .1 .8 .9 .0 .4 .5 .1 .5 .7 .5 .6 .2 .5 .3 EXTRAPOLATED PRESSURE: INDETERMINATE LY-231 North Slope Borough Operator NSB #4 Well Name and No. ~ , · , --- , , : DT(MIN) RECORDER NO. 14926 DEPTH · FINAL SHUT-IN 2210 FT. TOTAL FLOW TIME: T = 86 MIN. LOG((T+DT)/DT) PRESSURE(PSIG) DP(PSIG) P SQR X .001 DST No. 0 1 2 3 4 5 6 7 8 9 10 12 t4 16 18 20 22 24 26 28 30 4O 5O 6O 70 8O 90 100 110 120 130 140 150 160 170 180 181 1.940 1.643 1.472 1.352 1.260 1.186 1.123 1.070 1.023 .982 .912 .854 .804 .762 .724 .691 .661 .634 .610 .587 .498 .435 .386 .348 .317 .291 .270 .251 .235 .221 .208 .197 .187 .178 .170 .169 285.0 355.3 398.2 430.8 459.2 485.6 505.7 524.1 541.1 556.1 571.0 598.4 624.1 647.3 669.8 689 0 7O7 6 724 5 740 4 754 4 767 9 819 4 851.7 873.5 889.4 901.4 911.2 919.2 926.3 933.2 938.7 944.4 949.0 953.6 957.6 961.1 961.6 EXTRAPOLATED PRESSURE: 1023.2 SLOPE: 740470.3 PSI SQUARED POINTS USED: 15 PSI /LOG CYCLE 0.0 70.3 113.2 145.9 174.2 200.7 220.7 239.2 256.1 271.1 286.0 313.4 339.1 362.4 384.8 404.0 422.6 439.6 455.5 469.5 482.9 534.5 566.7 588.5 604.4 616.4 626.3 634.2 641.4 648.3 653.8 659.5 664.0 668.7 672.6 676.2 676.6 126.2 158.5 185.6 210.8 235.8 255.7 274.7 292.7 3O9 2 326 0 358 0 389 4 419 1 448 6 474 7 500 7 525 0 548 3 569 2 589 6 671.5 725.3 763.0 791.0 812.5 830.3 844.9 858.1 870.9 881.2 892.0 900.6 909.4 917.0 923.8 924.6 LY-231 t I ! ) ! I } .... } i } } } } } ! 0 1; 0'01:: (_LO/ (_LO+_L)) · · · NI-I~HS q¥IllNI . · · · · · ,~ NI-I~HS ]VNIJ ~# ISO '~# BSN HBnowo8 ~aOqS HIWON lOqa W~NWOH O' OOT 0 O01z 00@ OOEt - 0005 - j J / ! J I ! t J I I I 0000~ O' 000~ I O' 001~ 1 (d) · NI-I~HS 7¥IIINI NI-I~HS ]¥NIS ' 0'0~ I © }> lOqd 803/90q o ~ 0'0~ 0 ' 0,_, 1, O' O00T I- O' OgE O' OOE O' O~a O' 00~ O' Ogl; O' 00'1; O' Og O' 0 -0'0 ) - O' O01z - O' OOE1 - O' OOE~'I; SAMPLE CHART / II / Y TIME lOO 1{,) t+At HORNER PLOT Ill ] lo Horner Plot Slope Breaks Upward Possible Causes (1)decrease in pay thickness away from the wellbore (2) decrease in permeability away from the well- bore (3) increase in viscosity of reservoir fluid (fluid contact) (4) barrier within the radius of investigation SAMPLE CHART HORNER PLOT I / TIME lO I+/XI Horner Plot Slope Breaks Downward Possible Causes ( 1 ) increase in pay thickness away from the wellbore (2) increase in permeability away from the wellbore (3) decrease in viscosity away from the wellbore SAMPLE CHART HORNER PLOT [!~lll~tt 1111111 I IL[HI ~ti v[l~ll~l I t J I ~ll[lll/// 1//1]~1 IItl ~l IxIlt II ~1t111111 I II1~111 Ittl/1 I I N I I IIit/I I t51 I I1 TIME { + ~ I Early Time Deviation of Homer Plot Possible Causes ( 1 ) wellbore damage due to filtrate invasion, dril- ling solids, etc. (2) partial penetration of pay zone (3) plugging or choking of perforations (casing test only) (4) wellbore storage effects (Iow permeability gas wells) SAMPLE CHART t L,.-~ / ~ I TIME HORNER PLOT [' ~ /,"I 100 10 1 0 t+/Xt _ Horner Plot Slope Continually Increasing Possible Causes ( 1 ) well between two parallel boundaries (channel sand) (2) induced hydraulic fractures Very Iow permeability. Usually only mud recovered from interval tested. Vir- tually no permeability. Slightly higher perme- ability. Again usually mud recovered. Slightly higher perme- ability. Small recovery, less than 200 ft). Average permeability. Final and initial shut- ins differ by 50 psi. Average permeability. Strong damage effect. High shut-in pressure, Iow flow pressure. Excelent permeability where final flow final shut-in pressure.. High permeability where ISIP and FSIP are within 10 psi. Deep well bore invasion or dam- age. Final shut-in higher than the initial shut-in. ] ! ) ! ! ! ,~ ! ) ! } ) ! 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N N30 ~Od ~Od ~Od e~ ZI~OH 133J ON NIV~9 %~lM %9~0 3H ON N~3d Hld3O 3ldNVS S39dNVS 3~03 qqV~laIS - SISAqYNV 3~03 ~VIS-NV3Q aBeJOqOUV : AJoleJoqel. 9LZL-£-d8 : 'ON al~J ?# leoPl~M 8SN Zg-AeN-§ : a~eO 46noJo8 adols 4~JON ' 3 N I ' S 3 I BOIV~OBV9 3 ~JO3 C O R P O RAT ON NORTH SLOPE BOROUGH BARROW FTELD WELL //4 MAY 18, 1988 124 Asset Boulevard Scott, Louisiana 70583 (318) 235-2201 TLX 287 239 RTC TABLE OF CONTENTS WELL HISTORY INFORMATION I1. III, OPERATIONS LOG WELL TEST PARAMETERS AND TEST SUMMARY IV. PLOT PRESENTATION A, B. C. D. E. F. G. H. i. J. PRESSURE VS TIME ( HISTORY ) SEMI-LOG ( FLOW ON 15/64" CHOKE ) GRINGARTEN PRESSURE DERIVATIVE TYPE CURVE ( FLOW ON 15/64" CHOKE ) WELLBORE STORAGE ( BUILDUP PERIOD ) PRESSURE SQUARED HORNER ( BUILDUP PERIOD ) LOG-LOG ( 1 1 X 17"- BUILDUP PERIOD ) GRINGARTEN PRESSURE DERIVATIVE TYPE CURVE ( BUILDUP PERIOD ) DIAGNOSTIC WELLBORE STORAGE ( BUILDUP PERIOD ) UNIFORM FLUX TYPE CURVE ( BUILDUP PERIOD ) SQUARE ROOT OF TIME ( BUILDUP PERIOD ) V. GRADIENT SURVEY A, STATIC GRADIENT DATA STATIC GRADIENT PLOT VI. BOTTOMHOLE PRESSURE DATA This report is the exclusive property of NORTH SLOPE BOROUGH, and may not be reproduced by any means without prior written permission. NORTH SLOPE BOROUGH WELL NO. 4 DRILLING AND COHPLETION SUMHARY NSB 4 was drilled and 7", 32 lb/ft production casing was set in 1§87 to a total depth of 2267'. The well was perforated in I§BB at intervals (213B-2102), {2212-1132). The well was completed utilizing a heater string. The heater string completion consists of a 4 1/2" intermediate tubing with 2 3/B" production tubing and a packer set inside the 7" production casing. The well was cleaned out to the float collar. The well was opened to flow with no gas to surface. Halliburton was rigged up to stimulate the well using the ALCO foam fracture treatment. The well came in at approximately 500 MCFD, initial surface pressure was 1025 PSIG. Flowrate steadily improved to 1,000 MCFD. Water production was initially 1-2 galllons per minute (Frac fluid returns) and suddenly increased to 10 gallons per minute at the end of the fourth day. Fill was tagged at 2230'. Attic Coiled Tubing was rigged up to flush the fill. Nitrogen and fresh water was utilized. The well was again flowed and fill persisted. Water production remained at 10 gallons per minute. Western Atlas was rigged up to run the production survey. The well was shut-in until Resource Technology was rigged up to run the pressure survey. HEAT STRING DETAIL 2 3/8" PRODUCTION TUBING ITEH DESCRIPTION OF EQUIPHENT I AVA "LSU" Seal Assembly Stinger 1 2 3/8" EUE Brd, 4.7//, N-BO Box, 2 3/B" Vann Pin Pup 66 Joints, 2 3/8", EUE, Brd, 4.7# N-BO TBG 1 2 3/8", EUE, 8rd, 4.716, N-BO, Pup Joint 1 FMC TBG Hanger w/2' Pup Joint (2 3/8", EUE, 8rd, Top ) RK8 to TBG Head Flange Landed at depth LENGTH 8.21 10.00 2065.03 8.10 2.06 14.15 2108.09 DEPTH 2108.09 2099.88 24.85 16.75 4 1/2 CIRCULATION TUBING ITEM DESCRIPTION OF EQUIPMENT 1 2 3/4" EUE AVA Shear out sub 1 2 3/8" EUE 4.7# N-BO Pup Joint 1 2 3/8" AVA "SEL" Nipple (1.76- Top No Go) I 2 3/8" EUE, 4.7# N-80 Pup Joint I X over 2 3/8" EUE Pin X 4 1/2" Vann Box I AVA 2/38" PBR 1 AVA 7" PPG Packer (Hydraulic Permanent) 1 AVA Anchor Seal Unit (ASU) 1 AVA Circulating Sub w/9 Ports 1 Joint 4 1/2" TBG Buttress I 4 1~2" TBG But%ress Pup & Mandrel HBG RKB to 4 1/2" TBG Head Landed at LENGTH .52 4.27 .90 3.18 .67 7.42 3.90 1.30' 1.10 2079.92 3.67 15.90 2123.18 DEPTH 2123.18 2122.66 2118.39 2117.49 2117.33 2113.66 2105.24 2101.89 2100.59 2099.49 19.57 OZ'9 g8'g 09'9 06'8 O/'g[ g0'6 06'6 06'1: (o3s) 8A A8 8A AA 8A A8 3O03 cl3S ogggo/.[' 89Z O[9t6OE ~881E EgE SJ. 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'Bt _-Io 09 eJnleJedwem als '8 % cjgo'o ~N% 'Zl. % Bt XllSOJOd 'Z. % ~00'0 ~00% '9 t leej ~g~'O eJoqlleM lo sn!peu '9 0/=10161 g'Cgg 5b 'g[ leej gg (QAJ.) sseuqo!ql J!O~UesaM 'g a/ aa o9'eoe ~b 'l~t ~l!^m~j o!l!oeds 9'0 ZI!ReJID s~ID 't~ a/-laa 00'0 ob '~t -Igg/_-IOC3 ~g'l~z/. UqlD '1~ % gl~ ~S '~t elsd 06 t ejnsseJd JoleJede$ '~ % gg I~S · ~ ~ -I0 69 eJnleJedtuel JOl~J~ldes · ~ Sl:l:ll:ml,91Vl:lVd 1S:1111:JM' .BUILD UP ANALYSIS 1. Rate qw: = 308.6 BBL/D 2. Rate qg: 223.5 MCF/D 3. Horner Time: Tp = 43.78 feet 4. Viscosity: Ug ( cp ) 5. Total Compressibility: CT (1/psi) 6~ Fluid Compressiblity: Cg ( 1/psi ) 7. Volume Factor: Bg ( RB/MCF ) 8. Thickness: h = (feet) 9. Porosity: = ( % ) 10. Wellbore radius: rw = (feet) 11. Bottom-hole temperature: T = ( o F) 12. Fiowihg bottom hole pressure: Pwf ( psia ) 13. Permeability: k ( md ) 14. Permeability - thickness product: kh ( md-ft ) 15. Diffusivity: ( ft2/hr ) 16. Skin Factor: s Buildup Drawdpwn 0.0114 0.0111 0.001033 0.001478 0.001978 0.00283 4.06 6.25 22 22 18.0 18.0 0.254 0.254 45.9 40.7 379.26 379.26 0.6068 2.98 13.35 65.56 75.49 266.1 -2.5 5.98 During the drawdown period, the permeability was seen much higher than the build-up period. This difference is due to the flow period displaying the fracture permeability and the buildup showing the actual rock matrix permeability. TEST SUMMARY A pressure transient test was conducted on the North Slope Borough #4 well on May 19, 1988 - May 26, 1988. The test Consisted of a flow period (15/64" choke), followed by a buildup period. Each portion of the test will be discussed as it pertains to the overall pressure transient test. .FLOW ON 15/64" CHOKF The well was opened on a 16/64" choke,and the well was flowed for one hour 35 minutes, at which time the choke was changed to a 15/64" choke. At 01:30 on May 20, 1988, water reached surface. The semi-log plot displays the data from this point on in the test. The pressure fluctuations observed during the later portion of the drawdown is caused by the choke being rocked and reset to a 15/64" choke. A pressure derivative type curve was plotted and a match was made, resulting in a permeability value of 2.98 md. with a skin of 5.98. These values represent an estimate of the fracture permeability and not the rock matrix permeability. An attempt was made to match the data using a uniform flux type curve. An automatch was made and the fracture half-length, Xf, was calculated to be 17.93 feet. This value is only an estimate due to the data being masked by wellbore conditions. However, this value adds validity to the values calculated using the buildup data. BUILDUP PERIOD The well was shut-in for the buildup on May 21, 1988 at 18:00 with a flowing bottomhole pressure of 379.3 psla at a flow rate of 223.5 MCF/D. Analysis was performed using the Gringarten pressure derivate type curve to obtain values for permeability and skin. An automatch was created and resulted in a rock matrix permeability of 0.607 md. and a skin effect of -2.57. To analyze the frac job, three steps were taken: . Identification of flow regimes using a log-log plot of delta pressure squared vs. delta time (dP2 vs. dT). Determination of fracture half length using a uniform flux type curve. Determination of fracture half length. C O R P O R A T I 0 N~J~j 1. IDENTIFICATION OF FLOW REGIMES Fractured wells usually exhibit four regimes: 1) fracture linear flow, 2) bilinear flow, 3) formation linear flow, and 4) pseudo radial flow. The fracture linear flow is characterized by a unit slope on the log-log plot. Bilinear flow results in a 1/4 slope line, and formation linear flow is associated with a line of 1/2 slope. Data following these three regimes is pseudo radial flow or flow from the formation not affected by the fractures. Using the diagnostic log-log plot, the four flow regimes are evident. Fracture linear flow lasts until a delta time of 0.018 hours, followed by a transition between fracture linear flow and bilinear flow. The bilinear flow regime lasts from delta times of 0.06 to 0.2 hours. The formation linear flow regime starts at a delta time of 0.2 hours and ends at a delta time of 2 hours. From this point on, pseudo radial flow is prevalent in the reservoir. 2.., DETERMINATION OF FRACTURE HALF-LENGTH USING A UNIFORM FL..UX'FyPE CURVE. A uniform flux type curve was constructed and a match was made to represent the end of the formation linear flow period. A permeability value was calculated to be 0.499 md. with a skin effect of -2.9. These values were used to calculated a value for fracture half-length, Xfl of 12.7 feet. 3. DETERMINATION OF FRACTURE HALF-LENGTH USING A ROOT TIME PLOT Utilizing the data from the linear flow regime, a plot of square root of time ( SQRT (dT)) was plotted verses pressure squared (p2). A unit slope identifies the formation linear flow regime and the point of deviation of data from the unit slope marks the end of formation linear flow. A permeability value was calculated to be 0.470 md. with a fracture half-length of 11.77 feet. f~ o. c LIJ es°urceTechng oO.g¥ GOMPAHY: Hor~h S2ope Borough LEASE/FI~D: Borrow Pte/d COHHENTS: Flow/Buildup Test Pressure HSstory P vs t PRES PLOT ZNTERVAL: DATE: 5/ LB/ 88 - 5/ 26/ 88 TIME: 20: 43: La - t5: 30:34 By R T C EngLneer: Brown/dacobsen goo TOD.S AT .~154 Fl.'ET BO0 F ' J rlPi:N ~¢EL_ ON li;/64' (:HBKE IUILDUI PERIl D 700 riO0 · PO[IH 400 FLD~ lIN 15/6 <E .':100 -,~0 I I I i I I I I I I I I ! I I ~oo v 0 f esourceTechng oO q¥ CORPORA CONPANY: Nor%h Slope Borough ~ELL: · 4 LEASE/FIELD: Berro~ Field CONHENT~ Flo~/Buildup Teat Flo~ on t5/64' choke· Sem_ -Log ^- PFIES PLOT INTERVAL: DATE: 5/ 20/ 88 - 5/ 2t/ 88 TIME: t: 40:24 - i7: 59:34 By R T C Engineer: Brown/Jacobsen · RzlO . · · R~ '. · · · o .o 4R~ '. ' '~,~:[. ; · ,· ~ztn ~ i'~ HOURS ,.., ,.., i ,~. ,i. i.. L~:LG:90 :ami1 996L-N~P-~O :a~od ~Ld~$N :~aiqoJd [ aO/d.L] _ECl ~OL I i S qA~tlq9 -~dXl g~oooo'L = S~3G9 OLg~g6'g = S LL~OS6'~ = H ~gggg'g9 = HN NE.LalVON I ElD i ':I),IOH3 ,,-Iz9//cJ 1, NO ~0-1--t Oq~ I _~ ~Aoaava aor'loaiOEi ':ldO-IS HJ_aON 111 ,,,~,...~,~..,1/I ill sur,o}- u~.~'P I!! I!1 111 i~ Ill Ill Iil III I1! II! !1! ' III !1 I Ill il ! III ii I I!1 Iii .... II! Jl~~ III .111 !11 III ..... ~ II! II ..... III I ,,~ ,,, ~, Iii I,, I!1 III III . I11 II! Iil Iii ~ III 111 I~ II I I! I~ I! I II I!1 II! ........ Ill II! I!1 I.I! i][ I!~,t,!~..! ~ - I't"i ~ ~"~ I I I I I i ,,, Ill I!1 ...... III !ii tll ..... I11 . III . III .... I1~ ...... II! It' !!~ ~ .... !1' ~ .... ~ I ~ ~""~ ~ -HI FTI I!I ill I!i . , . ueaqooep/u~oa8 :daau;§u~ 0 £ ~ ~8 ~-O'Ed S fl H poTded dnPtTne qee£ dnPtTne/-o;d :S£1~NHOO qOnouoe ~do~s q~uoN 6N006v u ° d u ° ° ~ . uqoalasJnasaI:li P Sq Homer ~( Tp v PRES' IN.OT ZNTERVAL: TZHE.: i8:. O: t4- i3: 50: ~i By R T C Engineer: Bro~n/Jacobsen I ':, : 8t3.9 ' / 65o. 0 .../ ! . ~ 550.0 4R2.4 Tp- 43.8 HOURS 427.2 350.0': , st~nOH u~; ~p ~ ~0'6g'~L :aw!± gg6L-NR?-~O 'e~Dd RS~SSN 'welqoJd S~AaR9 Ed,k/ ~-OL ~-01. L-~000'S = SE3dO 96LLS'~- = S L-~990'9 = ~ 6~6~'~L = H~ N':t .L EtVE)N I ~0 cOL CIO I ~':td dNd-"l I NEt G~IH MO~tYEt HORO~O8 qdOqS HL~ON "T'- 0 ~03~ *[ (~**d)Cl 0G:60:LL :~1± gg6L-NRP-~O :e~OQ RS~BSN :~eiqo~d ~. XRq3 ~0~ i NR i 1 ~9~/'~L = JX LGL06'~--- S U/~£6'OL = H~ i I I ~0~ 90:8~:9L :a~!l 896L-NRP-~O :e~oQ RS~SSN :~alqoJd 000' 0 ~ (anoH)±Uos ] 000'9 O00'E lO-]d , , 31Al ! 1 0000'0 00'001, lO0~J 1-:13--1 99gL/' 1, I. = JX E-=iLO'l,- = JS 0~ I,-300/' "¢ = >1 O0 ' 00 E 00'00~ "-' 00'005, ~-~ O0'OOc] 00'009 CIO i HZld dlqC]-I 1F1E] q-Iq I .a N~OHHVE] HOFIOH08 ~dO-IS HIHON Z91.O'O Z8 LO'O t'/.. 1.0'0 9L'SL (:J'l~' g6'9t,/. OOZr'& O0~'& 0 L :t~ I. 8'c3t 8(J'~'t,Z. 000~ 000~ Z.,C:t L 8'Z.8 Ct,'S~Z. 000 I. 000 I. 80:cj I. 6' I.~ LO'8OZ 0 0 /.~:(Jl. ~/~sa ~sa :1o ~sa ~/oAz ~/av~ 1Nal(3'~nd 9 cl ¥~3a0 'ama.L 'SS31dcl Hld30 Hld30 ~]INII ee/9~,ls OIIVIS sn1¥1s 31¥0 dn-Pllnfl/~Ol.-I 1S::11 t,# 8SN 'i-13N~ VlVO 1N=JIO¥1::IID Resourc .coh. g oO.g COMPANY: No~th ~pe B~ugh WEL~ ~4 LEASE/FI~ Berro~ Field CONNENTS: Flow/Buildup Test Static Gradients 7~O Y TVD v s Pa/~T~ GRADZ~NTS' "PRES PLOT INTERVAL: DATE: 5/ 26/ 88 - 5/ 26/ I~ TINE: t4: 10:0 - t5: 27:0 By R T C Engineer: Brom~/dacobsen 8O dP -->**..~ ,- ~- 75 740 .... 730 710~~ I 700 ~90 50 670 ~60 ~..~"~ ~:.~.~.~'~ 0 0 0 0 0 ~ 0 O! 0 0 ~ 0 ~ 0 i 0 ~-~'~ 0 ~50 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~0 I I Ii E RESOURCE"~¥ECHNOLOIS%'' C["-~'~.PORt~T I ON 124 Asset Drive, Scott, LA 70583 (318) 235-2201 ***** PRESSURE TEST DATA REPORT ***** COMPANY: WELL: LEASE/F I ELD: ZONE: ]EST TYPE & NO.: RID: COMPANY REP: RTC ENGINEER: Brown/Jacobsen North Slope Borough Barrow Fie Id Lower Barrow Flow×Bu i Id-up E-line Ken Wotcott REPORT DATE: 05./28/88 TEST START DATE: TEST START TIME: ]'EST STOP DATE: TEST STOP TIME: PERFORATIONS(Ct): PACKER DEPTH(Ct): GAUGE DEPTH(Ct): GAUGE TYPE(BHP/Sur): BHP max(PSIA): BHT STP max(PS1A): Print date: TEST LOG ***** 05 / 18 .," 88 20: 43: O0 05/'26/88 15:30:34 '.7'138 - 2162. 2123 aMP E- I i ne 786.14 46.3 ,740.73 05/30/88 COMMENTS E- 1 ire CDr f 1 ow/bu i 1 d-up. The reports and plots contained here- representation o¢ the input data. Howe opinions based on analytical techniques and we cannot¢ and do not, guarantee o¢ any interpretations, and we shall n gross or. wi llCutl negligence on our. par. For. any lose, cost, damage~ or expense anyone resulting ~'rom any inter-prat officers, agente, or employees. in are a true and accurate vet ,a 1 1 interpretat ions are described in the literature the accuracy, or correctness ot, except in the case o¢ t., be 1 lab le or. r. espons ib le s incurred or sustained by ~tlone made b._¢ one of our · . .I ii .,I mi .. II .. ii .! .,. .i !1 .il I! i. iii .., ,,i .. .. !1 II !1 Ii !1 i! Ii ii ii Ii ii ii i! ii ii ii ii Ii !1 ii !1 ii m Z --H fl') · · · · · · · · · · · · · · ., · · · I I I I . I I I ! I I I I I · ! 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North Slope Borough Date : 5-May-87 NSB Wildcat #4 DEAN-STARK CORE ANALYSIS - SIDEWALL CORE SAMPLES File No. : BP-3-1216 Laboratory : Anchorage SAMPLE DEPTH PERM MD HE OIL% WTR% GRAIN NO FEET HORIZ Ka POR POR POR DEN M 1 1598.5 NA 18.4 8.7 88.6 2.73 2 1600.0 NA 28.1 5.2 83.8 2.70 2.1 2124.0 58.9 23.1 0.0 88.6 2.67 3 2156.0 21.8 24.1 0.0 84.7 2.66 4 2158.0 44.7 26.7 0.0 89.0 2.65 5 2160.0 66.6 27.2 0.0 93.3 2.75 6 2161.0 NA 24.9 0.0 95.6 2.66 7 2163.0 188.5 29.3 0.0 94.6 2.63 8 2165.0 10.4 20.4 0.0 93.8 2.68 9 2165.0 NA 13.9 0.0 87.8 2.68 10 2167.0 48.2 28.8 0.8 90.2 2.63 11 2170.5 21.1 25.1 0.0 89.0 2.69 12 2175.0 16.3 21.7 0.3 92.9 2.6} 13 2178.0 26.1 26.6 0.0 93.5 2.64 14 2178.0 NA 23.9 0.0 85.0 2.66 15 2183.0 22.1 24.1 1.0 88.1 2.64 16 2187.0 34.2 27.4 0.9 90.5 2.65 17 2192.0 21.3 26.8 0.0 88.2 2.65 18 2195.0 NA 30.2 0.0 90.4 2.66 19 2201.0 13.8 25.1 0.7 84.5 2.64 20 2205.0 8.0 24.6 0.2 81.0 2.73 21 2211.0 7.1 21.1 0.1 79.2 2.66 22 2212.0 9.6 22.6 0.0 84.8 2.65 23 2213.0 5.4 21.4 0.5 80.2 2.65 24 2214.0 7.4 23.2 0.5 78.4 2.72 25 2215.0 70.2 25.3 0.~ 90.2 2.71 26 2216.0 27.8 26.0 0.0 88.6 2.66 27 2217.0 NA 26.7 0.0 92.8 2.66 28 2219.0 114.5 28.0 0.1 88.3 2.65 DETAILED LITHOLOGIC DESCRIPTION (1) SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SLTST, SS, LT SS, LT 8S, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT SS, LT BL GY, VFGR, SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 4% LITH FRAGS, 30% MTRX BL GY, FGR, SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 2% LITH FRAGS, 30% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, MOD SRTD, SBRD, S CALC, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX, LAM BL GY, VFGR, SLTY, MOD SRTD, SBRD, S CALC, P CMT, 70% QTZ, 2% LITH FRAGS, 30% MTRX BL GY, VFGR~ SLTY, MOD SRTD, SBRD, S CALC, P CMT, 70% QTZ~ 2% BIT, TR PYR, TR LITH FRAGS, 30% MTRX .. BL GY, VFGR, SLTY, MOD SRTD, SBRD, S CALC, P CMT, 70% PTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, WL SRTD, SBRD, P CMT, 80% QTZ, TR LITH FRAGS, 30% MTRX LT BL GY, SDY, MOD CONS, TR BIT BL GY, VFGR, SLTY, MOD SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, MOD SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, TR BIT, 30% MTRX BL GY, VFGR, SLTY, MOD SRTD, SBRD, CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 73% QTZ, TR LITH FRAGS, 27%0 MTRX BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX, * BL GY, VFGR, SLTY, M SRTD, SBRD, SL CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX 8L GY, VFGR, V SLTY, P SRTD, SBRD, CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS, 35% MTRX, THN LAM BL GY, VFGR, V SLTY, P SRTD, SBRD, SL CALC, P CMT, 65% QTZ, TR LITH FRAGS~ 35% MTRX, THN LAM BL GY, VFGR, V SLTY, P SRTD, SBRD, V CALC, P CMT, 65% QTZ, fR LITH FRAGS, 35% MTRX, CAL CMT ZONE BL GY, FGR, M SRTD, SBRD, TR CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, FGR, M SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, FGR, M SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX BL GY, FGR, P SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX CORE LABORATOR I ES, I NC . North Slope Borough NSB Wildcat #4 Date : 5-May-87 File No. : BP-3-1216 Laboratory : Anchorage DEAN-STARK CORE ANALYSIS - SIDEWALL CORE SAMPLES SAMPLE DEPTH NO FEET PERM MD HE OIL% WTR% GRAIN HORIZ Ka POR POR POR DEN M 29 2220.0 NA 25.9 0.0 88.1 2.72 30 2223.0 362.4 27.3 0.2 93.2 2.65 SS, LT 32 2225.0 265.6 29.7 0.0 91.5 2.67 SS, LT 33 2228.0 1195.9 27.2 0.0 94.0 2.72 SS, LT 34 2229.0 NA 28.0 0.0 85.9 2.68 SS, LT 35 2231.0 127.7 26.4 0.0 91.8 2.66 SS, LT 36 2234.0 108.0 27.6 0.2 88.0 2.74 SS, LT 37 2240.0 58.8 27.6 0.6 85.3 2.65 SS, LT 38 2245.0 68.1 28.7 0.5 86.5 2.67 SS, LT 39 2255.0 NA 25.1 0.0 79.7 2.67 SS, LT 40 2261.0 61.9 26.4 0.0 84.2 2.66 SS, LT 41 2272.0 NA 30.3 0.0 98.2 2.70 SS, LT DETAILED LITHOLOGIC DESCRIPTION (1) SS, LT BL GY, VFGR, P SRTD, SBRD, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX, THN LAM BL GY, FGR, P SRTD, SBRD, P CMT, 80% QTZ, TR LITH FRAGS, 20% MTRX 8L GY, FGR, P SRTD, SBRD, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX 8L GY, FGR, P SRTD, SSRD, CALC, P CMT, 75% QTZ, TR LITH FRAGS, 25% MTRX * 8L GY, FGR, P SRTD, SSRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SL SLTY, P SRTD, SBRD, P CMT, 70% QTZ, 1% LITH FRAGS, 30% MTRX BL GY, VFGR, SL SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, 3% LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, 30% HTRX BL GY, VFGR, SLTY, P SRTD, SBRD, SL CALC, P CMT, 70% QTZ, TR LITH FRAGS, 30% MTRX BL GY, VFGR, SLTY, P SRTD, SBRD, CALC, P CMT, 70% QTZ, 3% LITH FRAGS, 30% MTRX NA - NO DATA AVALIABLE, SAMPLE FAILURE (1) - PERCENTAGE ESTIMATES ARE FROM PERCENTAGE COMPARISON CHARTS AND ARE THEREFORE APPROXIMATIONS * ' FRACTURED SAMPLE WELL H I STORY NSB ~4 EXPLORATORY 4/18/87 - 4/20/87 Move to NSB #4 & Rig Up - Accept Rig 8 2400 Hrs. - 4/19/87 · 4/21/87 - Depth 55' Build Vlm in pits - Hook up flowline - P.U. bit & BHA - Drlg. 55'- 160' - Circ. & tonal, hole - Drop surv. - P.O.H. - R.U. to run 15-5/8" csg. - Ran 4 its. 72# Circ. &cond. hole -Cmt. w/271 sxs perm. R.D. Howco - W.O.C. 4/22/87 - Depth 107' M.W. 8.9 Vis 55 W.L. N.C. CL 29x - W.O.C. - Cut 20" - Rough cut 15-5/8" - Final cut 15-5/8" - Weld on Bradenhead - Test to 1000 psi - N.U. B.O.P.E. & Diverter system - Function test B.O.P.E. - P.U. BHA & Cal MWD - Drlg. cmt. 4/23/87 - Depth 1092' M.W. 9.4. Vis 55 W.L. N.C. CL 11x - Drlg. cmt. & shoe 107'-151' - Drlg. (151'-590') Surv. 1-1/4 degrees - Drlg. 590'-826' - Circ. out thick mud - Drlg. (826'-875') - Circ. out thick mud - Drlg. (875'-891') Surv. 1-1/4 degrees - Drlg. (891'-1087') - Circ. out thick mud - Drlg. (1087'-1097') 4/24/87 - Depth 1279' M.W. 9.4. Vis 55 W.L. N.C. CL 11x - Drlg. 1097'-1279' - Circ. & cond. Short trip - Circ. & cond. hole - P.O.H. - Serv. MWD - Lay dh. same - R.U. to run 9-5/8" csg. - Ran 29 its. 55.5# S-95 - Circ. & cond. - f/cmt. - cmt. w/1276 sx perm. @ 14.9 PPG - N.D.B.O.P.E. 4/25/87 - Depth 1279' P.U. Hydril - Set 9-5/8" sIips- Cut csg. - N.D. diverter system - Weld on Bradenhead & test to 1500 psi - N.U. B.O.P.E. - Clean pits - Take on H20 & mix Cacl2 - Function test B.O.P.E. & test to 5000 psi. 4/26/87 - Depth 1453' M.W. 9.7 Vis 55 W.L. 15.0 CL 57x - Fin. testing B.O.P.E. - Set W.B. - P.U. BHA - Cal. MWD - T.I.H. - Cut drlg. line - Drlg. cmt. (1147'-1199') - Repair drive line - Drlg. cmt. (1199'-1256') - Test csg. @1500 psi - Drlg. shoe & 10' new hole & perform L.O.T. drlg. ( 1289 · - 1455 · ) 4/27/87 - Depth 1962' M.W. 9.8 Vis 42 W.L. 7.5 CL 45x - Drlg. (1453'-1799') - Drop Surv. - degrees - Serv. MWD & Rig - W.O.L. - R.I H. - Ream~~"-T799') Drlg. (1799'-1962') kl~s~ 0i~ ~ G~s Co~s. Comi~s~io~ NSB #4 Page 2 .. 4/28/87 - Depth 2295' M.W. 10.8 Vi's 47 W.L. 5.8 CL 55x - Drig. ¢1962'-2168') - Circ. cond. mud - Drlg. (2168'-2188') - Circ. & cond. mud - Gas cut - Drlg. (2188"-2227') - Circ. & raise M.W. to 10.5 PPG - Drlg. (2227'- 2254') Circ. & cond. mud - Raise to 10.6 PPG - Drlg. 2254'-2271' - Circ. & cond. - Drlg. 2271 '-2295' T.D. - Circ. - Ck. f/flow - Pump Dry job - Short trip. 4/29/87 - Depth 2295' T.D. M.W. 10.8 Vis 46 W.L. 2.6 CL 51x - Circ. - Drop surv. - Pump dry job - P.O.H. - Serv. MWD - R.U. W.A.I.L. & log - R.D. W.A.I.L. - M.U. BHA & R.I.H. - Ream 15' to BTM - Circ. - P.O.H. - Lay dh. bit & stab's - M.U. Baker DST Tools 4/30/87 - Depth 2295' T.D. M.W. 10.8 Vis 47 W.L. 4.7 CL 5Ox - Sim. in hole - R.U. DST surface equip. - Set pkr°s ~ test - Release pkr's - P.O.H. - Break dn. test tools - M.U. test tools f/DST #2 - R.I.H. - R.U. surface equip. - Set B.O. pkr. & test - P.O.H. 5/1/87 - Depth 2295' T.D. M.W. 10.8 Vis 47 W.L. 4.8 CL 50x - Fin. P.O.H. - LD Baker DST Tools - M.U. BHA - R.I.H. ream 10' to BTM - Circ. - P.O.H. - R.U. W.A.I.L. & log. 5/2/87. Log - R.D. W.A.I.L. - R.I.H. - Ream 15' to BTM - Circ. & cond. hole - Pump dry job - P.O.H. - L.D.D.P. - Pull W.B. - Chng.' rams to 7" - R.U. & run 56 its. 7" 52# N-80 csg. - R.U. Howco Circ. head - Circ. - Clean pits & mix Cacl2 - Cat. w/150 sx Class "G" cat. -R.D. Howco- N.D.B.O.P. set slips 5/5/8~7 - Depth Rough cut 7" csg. - N.D. B.O.P. stack - Make final cut - N.U. tree & test to 5000 psi - R.U. mix & pump 40 bbls. Arctic Pak - Clean Pits Release Rig @1200 Hrs. 5/2/87 .ALASKA OIL AND GAS CONSERVATION COMMISSION ~ 3OOl PORCUPINE DRIVE /~ANCHORAGE, ALASKA 99501-3192 ~ TELEPHONE (907) 279-1433 TELECOPY NO: (907) 276-7542 ', July 27, 1987 Mr. Ron Chapman North Slope Borough 3201 "C" Street Anchorage, Alaska .99503 Dear Mr. Chapman.. Attached for your files are approved applications for permits to drill North Slope Borough Wells I/l, 2, 3, ~ and 7. You will note that the approval date for these Permit to Drill Forms is subsequent to the actual drilling of the wells. The delay in processing these permits results from "honest differ- ences of opinion" which culminated in a June 22, 1987 agreement between the Borough and the Commission. '~ We look forward to a continuing mutually beneficial relationship. Sincere~ Chairman Enclosures dlf:6.NSB ~' STATE OF ALASKA ~,, ALASKA (JiL AND GAS CONSERVATION CC, ,,vllSSION PERMIT TO DRILL 20 AAC 25.005 t la. Type of work Drill ~ Redrill []1 lb. Type of well. Exploratory 12~ Stratigraphic Test [] Development Oil Re-Entry [] Deepen[]1 Service [] Developement Gas [] Single Zone [] Multiple Zone [3 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool NORTH SLOPE BOROUGH 47KB feet I4ILDCAT 3. Address 6. Property Designation 3201 C STREET ANCHORAGE, AK 99503 NSB FEE 4. Location of well at surface 7. Unit or property Name 11. Type Bond(see 20 AAC 25.025) 2641 F SL & 2181 FEL SEC 5, T21N, R17W Uti SOUTH BARROW At top of productive interval ABOVE 8. Well nu ,mber Number -~ ~SB-4 At total depth ABOVE 9. Approximate spud date Amount 200,000 4/16/87 12. Distance to nearest 13. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) property line 2,639 feet 17~140 feet 21,120 2,600 feet 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035 (e)(2)) Kickoff depth feet Maximum hole angle 0 Maximum surface i ,000 psig At total depth (TVD) 1,050 psig 18. Casing program Setting Depth size Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 24 20 94 H - 40 0 58 7.5 PF 17~ 13-3/8 72 S 8rd 1258 0 150 200 PF 12~ 9-~/8 53.~ S 8rd 1378 0 1300 900 PF 8+~2 7 2)2 N 8rd 2578 0 2600 100 G 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured feet Plugs (measured) true vertical feet Effective depth: measured feet Junk (measured) trUe vertical feet Casing Length Size Cemented Measured depth True Vertical depth Structural Conductor Surface ,,., Intermediate Production · Liner Perforation depth: measured ¢:.,z:-~:, :. (';i~:; . true vertical 20. Attachments Filing feeZZ Property plat [~ BOP Sketch X3 Diverter Sketch ~B Drilling programXX Drilling fluid program ZZTime vs depth plot [] Refraction analysis [] Seabed report [] 20 AAC 25.050 requirements 21.1 hereby certif~~correct to the b~_s .of my knowledge Signed Tit leJ~¢~'~~, Date/,~/~,/~ ~' ~ ~ Commission Use Only ~" ? 7 ~ "? "/--~ 50- o ;~-? '- ~, ~ - ~ -. 0 7 / 2 7 / 8 7 for other requirements Conditions of approval Samples required ~t~ Yes [] No Mud log required *"L~ye~s E3 No Hydrogen sulfide measures [] Yes [] No~' Directional survey required [] Yes'[~' No Other: /~~, . by order of Approved by Commissioner the commission Dat Form 10-401 Rev. 12 ~5 , cate J//"J j ··~ SOUTH BARROW EAST AREA FIELD ' J ' j/ ,vo u,,,~o., ~,,v~ j J \ r-------- ....... L -- · , ff -< *SO.l~a~Ow NO ?-..L ............. ] ........... ~ /PROVED RESERVES DECEMBER 1978- il.5 BCF SOUT. 8ARR',,, 'F,EL~' -- F'-'~-'.':.o. ,'~ ............ ~*-i ........... \ / PROBABLE RESERVES DECEM8ER ,.8 - ,., BC, ' ' /~--~ --'' ~ ~/- ~ ~ I ~10~ ~ SE SMIC CLOSURE, POTENTIAL I ~.--~~ I~ ~ i i'°1 ~ ' ~/ . ~o~,~ O..L o.s RESOU,C~S ~ ' ' I J GAS WATtR C~TACT -2011' I - .... ;---- . .... · . SEiS~C~ ,~ zoos I I ~ .2~~ / ~ ;I ~3 j / ~ g . ' ' ' ' '~ ~'- ~ ~' I J ' ~~~~ I / ~ ~ ' ~ ~ I ~ '/ /// ~ I ' :/~ .... 2ao~ x. / one ,'~ ~ / ' ' ~' ' ~~(." ~6~ :liJ _{ ~ s~,s~,c ctosu~e. ~o;~,~L : / ~i ......... I ....... '/ /" x¢~'°'" ~' ~-- i /// ~- /] - · ~ ~ t~ ~' ~ ~~POTENTIAL RESERVES 12 BCF ~ ' ~ ' ~~'L';~ ~,oo'~ ~' -, ~l~ ~~ ,/ ~,~°"l .0./~ ~ ~. ~' _~0"'-- / ~ i ./ I I ~ .... / ~- x ~ ~' /- ~ju , u ~x ~3 / / J . ,4_~. ~;,~o-.-~,, x~' .'' L_ ,~~,o -~' .... , x, x /'~. ! / /I / ~ ~-~ ~ , , ,~ ...... '~,~,c c,o~,~.,o,~,,,,, V'~. , ~' '- i ~ ~~ /' I J ~-_ ;ADDITIONAL GAS RESOURCES/~~ ~ _~ J i POTENTIAL RESERVES 4 BCF~ J ~~_~300~ I I j I t ~ O I - ' I NO 3 I I ~ ~,J j ~ :,i j j , : LEGEND APPROXIMATE TOP BARROW ,~ : ~ ,.ov~ *.~ '~ BARROW AREA : tl J ,, ts 30 ', ,t Jl ~ PROBABLE RESERVES [ ] NATIONAL PETROLEUM RESERVE IN ' : ~ POTENTIAL RESERVES [~1 3~' ~ ~ ~O~' i ' ~usTo~ T~x~S~ J GRUY AND ASSOCIATES IL;?~ 5 X 5 TO THE INCH · ? x lo INCHES KEUFFEL & ESSER CO. ~IAD£ IN U.SA. 46 0410 ~-~ 5 X S TO THE INCH ' 7 X 10 INCHES 46 0410 I~--~) KEUFFEL & ESSER CO. MADE IN US.A. plnoo ID~O/z.~ 9 'ID e.%q 's~oI 00~I on ::m x~ 00~ I/z'i o~ ~'mo ~,~/~-6 _ Ool~ 'uoTnnllp O,C-~y 0'6 - ID~D 0'6 - ,OOg =o dT~.: ,~w ' s"!cI OOl/J " AFR al '87 1£:04 HSB-~. ~,:].RA(;E LIAISOH OFFICE , F'. A4 DRILLINO ORDERS: 1. ~ll ~olids ~qutpment as ~11 as charge pumps and agit~t~r~ ~ill be functional prior to rig acceptance. "7 2. Mud disposal will occur a~ 9-578" and.7"~' Borough boiler and OV tank and pump ~o be prepared. Pit water from JV on ice road maintenance and boiler water for rig and Borough boiler from IWW. 4. Frac tank at rig to bm steam lined. Base to be frozen in prior to logging. Keep steam to tank while fluid~ 5. Shop to b~ functional and ut'ilized. 6. DST if indicated. Detailed plan to be issued as applicable. Te~fing will occur after logging. · 7. C~ment design and procedure~ per prior Halliburton design. 8. Procedures previously approved In contracted proposals only to be changed by approval of Project Manager. Direct all ~uggestions, supplmments and changes (advice welcomed) to Drilling Supervisor or Project Manager. 10. Drilling Stratsgy: Surface hole - 12-1/4" mill tooth bit uming 12/64 jets and 91 +- spa · 1900 psi. ~o~ary and w~ight~ ~imilar to NSB No. '1 ~ith drill floor optimization, Production hole - 8-1/2" mill toothe bit u~ing 10/54" jets and pump ~pud~ to yield 1900-2000 psi. A~ter first bit run, utilize long tooth inser~ bi~. Hold viscosity in 55-45 range and W.L. to 4-8 cc. 11. Arctic pack par prior proposal, 12. TD to bm called on rig. prior to ~rgillite (')?4,y. in No. 15. MWD ROP to be plotted every connection on 5 inch scale. 14. Ditch cuttings to be taken from shaker, d~;ilter and centri- fuge every 20' and clearly labeled a~ to d~pth and source. All samples to be throughly washed and to be a~ free as possibl= of drilling mud. B~gin a~ter drilling shoo of murface pipe. 15. Mud to be chmckmd at least four times daily. Daily reports will be fax~d to Anchorage office - A~tn: Ma~t Dimmick. 1~. 200 BBL (rain} water tank to be on rig and lined for steam. above sea level. Verti~ datum is based on existing Well No. 13, Flange Elev. = 26.00' SURVEYORS CERTIFICATE 0 I/2 i i "= ! mi I e SCALE NSB WELL NO. 4 '1 Hereby Certify That I am a prOfessional Land Surveyor in and for the State of Ataskc and That This Plat Represents an As-Built Survey Made by me or Under my Supervision, and'That Ail Dimensions and Other Details are Correct. LAT. = 7' i o 12'06.99" LONG. = 156°28'30.592" Y = 6,291 , 657 X = 679,967' ZONE = 6 LOWER MOST FLANGE ELEVATION = 2:7.54 ABOVE SEA LEVEL. AS - BUILT NORTH SLOPE BOROUGH WELL NO. 4 .LOCATED IN NE I/4 PROTRACTED SEC. 5? T. 2I N., R. I?W.~ U.M.j ALASKA . SURVEYED FOR NORTH SLOPE BOROUGH BARROW GAS FIELD OPERATIONS BTS/LCMF LIMITED: J'.V. _..-,PO'. BOX 427/ 723 W. 6th AVENUE ,~ ,\., ..,~ ' ~--~ I I~ (1) Fe6 ~ 1. (2) Loc 8) (3) ~a~ (~ (9 C=r~ 13) (i0 and ]_3) (14 ~ 22) (23 r. hmz 28) ~: 01/28/87 6.011 Is tlm permit fee aurmched ~ ---- · ®··········o·eeo·.ee·ooeee·~·~m ··~······· ., 2. Is well to be located in a daf/ned pool ............................. 2. Is w~ll located proper distance fzun prop~-7 l~ ................ ~ 4. Is well locaued p ~roper dis uance frcm or_~ wells.., ...... ~..~ 7. Is operator th~ only affected party ................................. ~.~ 8 Can pezm~: be a!mp~d before fill:·eh-day w~it: · ··· ··e··· ···· ·· · ®· ···· i,, 9. Does operator have a bond in force .................................. ~ 10. Is a conservauion ordsr needad ...................................... 11 Is a~=a~i~ ~oval-nee~d I 12. Is the lease rn~er appropriaue ..................................... 13. Does the well have a unique name and rmmbe~ .......................... ~_ · 14. Is conductor string providad ........................................ ~ 1~. Will surface casing pro~ect f~esh waue~ zones ....................... ~, 16. IS ~ cemsn: used ~o cir~e on condnctor and sub-face ......... ~ 17. Will c~ ~ie in surface and inr. e_--mea-i ~e or pro~ion s~r~ ... ~ 18. Will c~: ~ all ~ p~~i~ ~~ ..................... .~ 19. Will all casing give adequate safe~y in collaose, tension and burst.. ~ 20. Is this ~ to be kicked off frcm an exis~ we!!bore ............ = "~ 21. Is old w~llbore abaft proced~re included on 10-403 ............ 22 IS adaquaue wellbore separaUion pr~sed '" · 00·0 ··e · ·o0·00·o0 ·0 eeo· ··o·,0 · 00··0000·· · ···eooooo·eoe~e·o·····o·ooe· 28. Is utm l~esence of H2S gas l~obable ................................. ,, For exploratory and Strange ~: '\~29. Are data presented on poten, W~!: overp~~e zones? ................. · '30· ~ seismic analysis daua presented on s~] ]~ gas zones .... ; ....... 31. If an offshore loc., are su~ resulrm of seabed condi~ presented 32 AHd~ ~ ~.1 req)~~~ · -- --- Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history, file. 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