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Home My WebLink AboutGMC Data Report No. 160Rock-eval pyrograms, .~otal organic carbon data, rock-eval pyrolysis data, C15+ extractable organic matter (EOM) results, normalized percent distribution of the normal paraffins and isoprenoids, C10+ saturate gas chromatogram, and a geochemical summary report of cuttings (7280' - 7340', and 10880' - 10907') from the Chevron USA Inc. Chevron USA Koniag No. I well Received 16 July 1990 Total of 9 pages in report Alaska Geologic Materials Center Data Report No. 160 Rock-eval pyrograms for the .samPl'es from the Chevron USA No. I Koniag Well ., ..- GMC Data Report No. 160 Page 1/9 .Ro'Ck-eval pyrograms for the samples from the Chevron USA No. I Koniag W. ell co co CD GMC Data RePort No.-~60 Page 2/9 Western Atlas International CORE LABORATORIES ! ! Job Number: 90145 Completion Date: June 26, 1990 Report Prepared By: C.F. Schiefelbein Work Requested By: Mr. P. Groth ,! GMC Data Report No. 160 Page 3/9 The ana~,.'~s, opiniOns Or inleq3relat~ons (:=3nla,ned in thins re~ are bas~ u~n ob~alions a~ ~te~ ~1~ by me cl~m fo~ w~e exdusive a~ ~i~t~l use ~is r~ ~s :~ ~0e. ~ ~te~retat~ ~ op~n~ e~ represent the ~st j~gement of ~e t~al~s. ~re ~a~ a~u~s ~ re~si~li~ ~ ~kes ~ warran~ ~ r~nza~s. express ~ .m~,~. as to the pr~. ~o~r ~rations. or profi~eness ~ever of any oil. g~. ~ ~ ot~r min~al. ~. w~l or sa~ in ~ -~n w~ ~ r~ ,5 u~ ~ ~,~ ~ f~ any fern what~ve[ TABLE OF CONTENTS Geochemical Summary Report Table 1 Table 2 Table 3 Appendix Rock-Eval Pyrolysis Data Extractable Organic Matter (EOM) Results Normalized Percent Distribution of the Normal Paraffins and Isoprenoids Ci0+ Saturate Gas Chromatogram GMC Data Report No. 160 Page 4/9 GEOCHEMICAL SUMMARY REPORT Two sets of samples (10880-10907' and 7280-7340') from the Chevron USA #1 Koniag well, AlaSka, were submitted to Core Laboratories for geochemical evaluation. The analytical program ihCluded determination of total organic carbon content (%TOC) and analysis by Rock-Eval pyrolysis. Additionally, a composite sample from 10880-10907' was subjected to soxhlet extraction and the Cl0+ saturate hydrocarbon fraction isolated from the recovered bitumen ~as gas chromatographically analyzed. Based on %TOC and Rock-Eval pyrolysis results, the three samples from the 7280 to 7340' interval have little or no potential as hydrocarbon source rocks. %TOC and Hydrogen Index (HI) values for these samples are less than 0.60% and 13, respectively. · Elevated Si (relative to S2; Table 1) and percent EOM/TOC values (Table 2), indicate that the two samples from 10880 to 10907', which contain less than 0.75% TOC, are stained. Examination of the CI0+ saturate hydrocarbon gas chromatogram indicates the presence of an unusually large unresolved complex mixture (naphthenes?) in the C20 to C30 range, suggesting that a significant portion of the material staining this interval is / nonindigenous. GM(] Data Report No. 160 Page 5/9 Deptl~ ( f t ) TOC S1 mg/g rock S2 7280-7300 0.36 0.16 0.03 7300-7320 0.34 0.08 0.01 7320-7340 0.56 0.13 0.07 10880-10900 0.49 1.91 0.54 10900-10907 0.72 1.30 0.67 10880-10907 0.57 3.05 0.98 Table 1 Rock-Eval Pyrolysis CHEVRON USA #1 KONIAG ALASKA Hydrogen Oxygen S3 Index Index Oil or Gas Shows Potential 0.15 8 42 0.29 3 85 0.35 13 63 0.58 110 118 1.01 93 140 0.58 172 102 File: 90145 Trans Tmax Ratio (deg C) 0.16 0.19 0.84 400 0.08 0.09 0.89 457 0.13 0.20 0.65 409 1.91 2.45 0.78 368 1.30 1.97 ~.~ 0.66 371 3.05 4.03 0.76 375 O O · CD TOC = Total Organic Carbon Hydrogen Index = (S2/TOC) x 100 Oxygen Index = (S3/TOC) x 100 Oil or Gas Shows = SI Oil or Gas Potential = SI+S2 Transformation Ratio = Sl/(Sl+$2) .0880-10907 0.57 1313 File: 90145 -,, Table 2 Results of C15+ Extractable Organic Matter (EOM) Analysis CHEVRON USA #1 KONIAG ALASKA Composition of C15+ Extractable Organic Matter Depth TOC EOM HC (Normalized Percent) .. Percent (ft) (wt%) (ppm) (ppm) Sat Aro NSO Asph EOM/TOC HC/TOC 23.0 HC/EOM Sat/Aro ~ CD OC = Total Organic Carbon; EOM = Extractable Organic Matter (C15+); HC = C15+ Hydrocarbons saturates + aromatics); Sat = Saturates; Aro = Aromatics; NSO = Resins; Asph = Asphaltenes i 10880-10907 nC15 5.3 nC16 6.9 nC17 12.0 Pristane 7.1 nC18 11.0 Phytane 5.7 nC19 4.9 nC20 3.4 nC21 3.8 nC22 5.0 nC23 4.2 nC24 3.6 nC25 6.5 nC26 4.4 nC27 3.3 nC28 2.4 nC29 4.1 nC30 1.6 nC31 2.5 nC32 1.0 nC33 0.7 nC34 0.6 CPI 1.51 i ipl 3 t. 6 ipl4 1.8 -- iD15 3.7 -- I ipl6 6.0 ipl8 16.6 - Pristane 39.1 Phytane 31.2 // Pris/Phy 1.25 nC17/Pris 1.69 nC18/Phy 1.93 GMC Data Report No. 160 Table 3 Normalized Percent Distribution Normal Paraffins & Isoprenoids CHEVRON USA ~1 KONIAG ALASKA Depth (ft) Isoprenoids File' Page 8/9 90145 ,-~ o 0 · 2~. 001 C'10+ SATURATED AMOCO Kon~ag HYDROCARBON FRACTION Ne]] 10880-:10907ft 9.47 5.63 :1.78 0,00 5.62 .25 ~6.87 22.50 28. ~ 2 33.75 39.37 45.00