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Home My WebLink AboutGMC Data Report No. 321Report about the BP Alaska Badami No. 5 core (11,261') and BP Alaska Badami No. 4 cores (11,152', 11,155', and 11,196') compatibility test with various drilling fluids. Received December 2005 Total of 12 pages in report Alaska Geologic Materials Center Data Report No. 321 Badami ~ S`WA~C MI SWAGO BP Coiled Tubing Drilling Badami Core Sampling Shale Stability Testing BP Drilling Engineers: Ted Stagg & Barbara Holt Prepared by: Rick Morris CTD Project Engin~r Mi Swaco by Page 1/12 GMC DATA REPORT 3 2 7 _ M~ ir.~i r ~A~~ . _ _ M-I ~.,..G 721 West First Avenue Anchorage, AK 99501 Tel: 907-2745564 • Fax: 907-279-6729 • www.miswaco.com BADAMI CORE SAMPLES BP CTD 11 /14/05 ~~ =v~~p: Badami cores from the B-0~ and B-04 were viewed and inspected at the State of Alaska's Geology storage facility located in Eagle River, Alaska in September 2005. The core quality was as good as could be expected for rocks from depth to surtace pressure and atmosphere while being stored for many years. Rocks appeared somewhat "dry" but competent. Some shales stored in this manner may delaminate .and crumble over time making this type of study irrelevant. The cores consisted of a sand shale Turbidite sequence found to the northeast North Slope Geology. The target sands and adjacent shales appeared competent. The sands should not pose a drilling problem therefore sand samples were not taken. Samples from four shales, at depths of 11,152', 11,155', 11,196' and 11,261', were collected for fluid stability studies to determine the type of drilling fluids and shale inhibitors to be economically used in Badami Coiled Tubing Drilling {CTD) drilling operations. These shales may possibly be penetrated during the proposed Badami Coiled Tubing Drilling (CTD) drilling operations scheduled in February 2006. The sample taken at 11,155' is the "target" sample. The samples were described prior to being placed in various solutions for a period of 5 days. Note that the samples remained in the solutions for a longer period with little to no change visually approximately every week until two weeks ago from this date. Visua( inspections and descriptions were recorded in table . _ form. Photographs were taken of each solution suite. A representative sample of each shale was sent to the Ml Swaco Lab in Houston for mineralogy and exchange capacity. See attachments included that summarize the results of this exercise. Each sample was divided into seven portions. Six were placed into the following solutions and the seventh sent to Houston for analysis. Fresh Water 8 ppb KlaGard in fresh water 10.7 ppg Sodium Formate (Na Formate) 10.7 ppg Potassium Formate (K Formate) 1 % UltraHib GMC DATA REPORT 3 2 1 Page 2/12 10.7 ppg KCI, NaCI, Naar (3% KCI, NaCI to 9.6 ppg, weighted to 10.7 ppg NaBr). All samples were returned to the State of Alaska with the exception of the seventh which was disposed of in Houston. Economic Summary Information provided: BADAM I 11 /7/05 CTD NORDIC 2 ^-6400 psi cLD 10200' TVD 12.25 ppg (balanced) 12.6 ppg with 200 psi over balance KWF (?) Drilling fluid weight 10,7 ppg Under-balanced Drilling Three F~oPRO SF systems should be acceptable for the Badami over- balanced CTD program. A blend of KCI/NaCI/NaBr or Na/K Formate or K Formate brines are acceptable for the fluid system base fluid. According to the observations, the salt blend of K, Na &NaBr can be used. For additional inhibition KlaGard or UltraHib may be used. .. A blend of Na and K Formates, adjusted for acceptable 15 to 20° F crystallization points, would be more economical than a straight K Formate brine with a crystallization point of ~33° F. Usually, all brines are formulated fora 10° F crystallization Point. There are four 10.7 ppg fluids that could be used to drill this well. 1. KCI/NaCI/NaBr base 2. KCOOH base 3. 5% KCOOH plus NaCOOH 4. NaCOOH base GMC DATA REPORT 3 2 1 $144 per bbl Freeze pt ~10° F $321 per bbl Freeze pt ~ -30°F $235 per bbl Freeze pt ~33°F $188 per bbl Freeze pt ~ °F Page 3/12 BP CTD BADAMI ROCK SAMPLES Started 11/3/05 Ended 11x//05 8 PPB 1% 10.7 PPG 10.8 PPG 10.7 PPG SAMPLE GENERAL DESCRIPTION WATER KLAGARD ULTRAHIB KCI/NaCI/NaBr BRINE Na FORMATE K FORMATE BADAMI -~' `'~ 11,152' SAMPLE 1 BADAMI °'' `~ 11,155' SAMPLE 2 BADAMI `' '~ 11,196' SAMPLE 3 BADAMI {' , 11,261' SAMPLE 4 Light brown sitly to fine Slight dispersion No dispersion No dispersion with no Very slight dispersion Very very slight dispersion with sandstone thinly interbeded with with some with no breakage. No swelling. breakage. No No dispersion with no breakage. No swelling. with some minor breakage but some very minor medium gray silty shale. This rock blocky Competent swelling, Competent sample. otherwise a competent breakage but should not be penetrated. breakage. No sample' Competent sample. otherwise a swellin sam le. com etent sam le. Light gray siltstone with light Slight No dispersion brown interbedded very fine silty dispersion No dispersion with no No dispersion with sandstone. Some green cast to with no with no breakage. breakage. No No dispersion with no No dispersion with no no breakage. No color that su ests lauconitic 99 9 breaks e. No 9 No swellin 9• swelling. breaks e. No swellin 9 9• breaks e. No swellin 9 9• swellin 9• clay. This rock may be kicked off swelling. Competent Competent Competent sampie. Competent sample. Competent in and most certainly will be the Competent sample. sample. sample, top crest shale barrier. sample. Black shale interbedded with No dispersion Very slight No dispersion No dispersion with medium brown sitty/very fine sandstone. The black shale has with no breakage. No dispersion. No with no breakage. No No dispersion with no No dispersion with no no breakage. No a metallic looking speck included swelling. breakage and a swelling. breakage. No swelling. breakage. No swelling. swelling. in its matrix. Rock breaks at the Competent competent Competent Competent sample. Competent sample. Competent bedding planes easily. sample. sampie. sample. sample. Dark gray/black very silty shale, Very slight dispersion No dispersion No dispersion ~^'ith moderate Very slight dispersion. Very very slight dispersion. No Large blocky beds. This shale with No with no breakage, blocky pieces. No dispersion with no No swelling. Many swelling. some should not be penetrated in this breakage. No No swelling. No swelling. breakage. No swelling. Blocky pieces when blocky pieces project but if it is, the rock swelling. Competent Competent Competent sampf®. shaken. competent when shaken. potentially can give problems. Sample sample. pieces• sample. campetent sample. competent. N d' a~ rn a r--- N M F-- O w [~ d t-- 4 c~ ca ANALYTICAL SERVICES LABORATQRY '~1 ~~~~~ No. Project: AS086-1115-2005 Ana t: George McMennamy Date: 11-15-05 w Sample Identifcation: Eight coif tubing drilling samples from MI SWACt~ Alaska. (LM#20053185} Rea~st: Mineralogy and cation exchange capacity (CEC). Testing Procedure: Semi-Quantitative XRD, XRF and MBT. Mireera{ogical Data: - fie, . , - `! 1'-€ r~~s~.~r ~ Baclsmi - Sample #1 91,152 Feet Sample #2 11,155 Feet Sample #3 11,196 Feet Sample #4 11,261 Feet Smectite * 8% 9% 5% 15% KaoGnite 5% 1 fl% 5% 5% Itlite/Mica 10% 20°k 1 fl% 15% Chtorrke - 5% - - Dolomite 1 % - 1 % - Fetd ar 7°!0 5% 3% 5% Quartz. 69°!0 51 % 76% 6fl% CEC, me 1100 r 7 7 4 12 Mitlnn Prot Sample #i 7,405 Feet Sample #2 7,791 Feet Sample #3 7,810 Feet Sample #4 7,840 Fee# 5mectite * 1696 23% 15% 10% Kaattrtite 10% 10% 12% 5% ItltteJMica 20% 20% 20% 10% .calcite - - - 3% .Feld ar 5% 3% 4% 5% Quartz 49% 44% 49% 67% CEC, me /100 r 13 18 12 8 Note: "Includes illite/smectite mixed layer. Copies To: Signed: -- Rick Morris Marc Churan - GMC DATA REPORT 3 ~ 1 Page 5/12 i Badami Shale Inhibition Samples ~.~ ~, ~` ~ '~ n_ roa. ~ ~ ~ ~ ~ ~ ~ ~ .r ~ ..____ Y O e~ 3 r r~:,.. .tip. .. r ~ ,: ~ ,~ ~, s* _ ~ .a,,' ~ ` ;~3 r ~ ~ 9 ~ ct ,~ ~ sy„r~'"~ ~ ` ~. ~~' ~~ .. _. ,max-" ' ~.. ,` 1~ ;~• ~,. Y ap _„`" ,.h. Via;. .J ~ - - ~~ ~ ~ ~, ~. ~, ~ -~ ; ~~" ,,~ ,z ; ;r,, ~,. Y ;~ ~TMa A ~ ~~ '~ ~~ r,~ Badami Sample Group-Water-8 ppb KlaGard/water-K+ Formate 10.7 ppg Na+ Formate 10.7 ppg-1 % UltraHib/water 3% KCI, 1 % NaCI 8.5+ ppg Brine All samples have been in approximately 28 days GMC DATA REPORT 3 2 1 Page 6/ 12 Fresh Water .~ ,. E ~~%} ~ ~ ~~ "~Ua ~ ~d' .y, ~~ 1V~O~~~~ ^ h i~ ) .}'t~iii `tom ~~r, ~y ~. ~R{ x.~~4s?. GMC DATA REPORT 3 2 1 Page 7/12 8 ppb KlaGartf GMC DATA REPORT 3 2 1 Page s/l.2 1% UltraHib ~~. _ =:t GMC DATA REPORT 3 2 1 Page 9/ 12 3% KCI + 1 % NaCI Brine 8.5+ ppg (normal concentrations in FIoPro SF) CMC DATA REPORT 3 2 1 Page 10/12 Na+ Formate-10.7 ppg b ,a-' ~~ .~^ ~ ~~~ .d~~+u r~r s~ GMC DATA REPORT 3 2 1 Page 11 / 12 / ;~ ~ d ~, A dj~ fi , GMC DATA REPORT 3 2 1 Page 12/12