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Home My WebLink AboutGMC Data Report No. 111Vitrinite reflectance data and analysis of the 920 - 8,510 foot interval of the Colorado Oil & Gas Dangerous River Unit No. I well Received 9 February 1989 Total of 23 pages in report Geologic Materials Center Data Report 111 II il VITRINITE REFLECTANCE ANALYSIS OF THE INTERVAL 920 - 8,510 FT DANGEROUS RIVER #1 WELL, ALASKA Introducliorl This report describes the vitrinite reflectance analysis of 15 cuttings samples from the Dangerous River # 1 oil exploration well. Fifty vitrinite reflectance measurements for each sample are taken wherever possible utilizing a Zeiss 01K photometer attachment mounted on a Zeiss Pho- toscope 1. Each measurement is qualified as to poor (P), good (G) or excellent (E). Depending upon such factors as; particle size, pitting, scratching or the proximity to pyritic particles. The measurements of particles interpreted to be reworked vitrinite are labeled with an "R" while the measurements of particles interpreted to be caved material are labeled with a "C". A table and a plot of all measurements displayed as a histogram for each sample are given in Appendix A. A vitrinite reflectance log is included which displays each histogram at the level of the sample. The material considered as caved is cross-hatched in blue while the material considered to be reworked is cross-hatched in red. The good and excellent samples are coloured in solid green while the poor measurements are coloured in cross-hatched green. Further colour copies of this log are available through the Bujak Davies Group. The laboratory procedures for the mounting and polishing of the vitrinite samples follows the methodology described by Davies and Avery (1984) in a triple mount stub with standard 600 grit, .3 micron and .05 micron polishing procedure on Buehler Automet polishing equipment. This methodology results in a polished mount of unoxidized kerogen0 The lev els o f vit rinit e re flect anc e are compared t o the Thermal Alferation Index (TAI) of Bujak, Barss & Williams (1977a,b)in Table 1 and are subdivided into various levels of thermal maturation for the generation of liquid and gaseous hydrocarbons. This generation model will vary from basin to basin depending upon the geohistory and kerogen compositions. GMC Data Report 111 Page 1/23' Bujak Davies Group Dangerous River #1 ..... 2 VITRINITE REFLECTANCE SUMMARY Maturity_ Zones based on Ro 920-1,030fl 1,550-16,2Oft 1,810-6,990ft 7,500-8,060 ft 8,510-8,61 Oft Immature Indeterminate Highly Mature Indeterminate Overmature immature Zone: 920-1.030fi The one sample in the immature zone indicates an Ro=0.456% from 20 readings. Little readable vitrinite was present in this sample and it should not be . heavily relied upon. Indeterminate: Only two poor readings on reworked vitrinite were possible on this sample. No in situ vitrinite was found, thus the maturity could not be determined. Highly Mature Zone: 1.810-6.990fl The upper four samples in this zone contain large quantities of pyrite which is likely to cause the wider standard deviation present in these samples. The Ro for these first four samples ranges from 1.0% to 1.1%. At 5,090ft there was very little sample present and almost all readings were poor. The Ro, here, increases to 1.2% and is .in aggrement with underlying samples. At 6,910ft only 5 readings were possible on the sample. The Ro=1.26% should not be heavily relied upon for this reason. Indeterminate: 7.500-8,060ft These samples were barren. .. Overmature Zone: 8,510-8.6] Off Only 12 readings were possible on the one sample in this zone due to the presence of pyrite and a lack of kerogen. The Ro is 1.49% and should not be heavily relied upon. GMC Data Report 111 Page 2/23 Bujak Davies Group Dangerous River #1 .... 3 Ii Ii .! REFERENCES BUJAK, J.P., BARSS, M.S. & WILLIAMS, G.L. 1977 Offshore eastern Canada Part I. Offshore east Canada's organic type and colour and hydrocarbon potential. Oil and Gas Journal, vol.75, pp. 198-202. BUJAK; J.P., BARSS, M.S. & WILLIAMS, G.L. 1977 Offshore eastern Canada Part II. Offshore east Canada's organic type and colour and hydrocarbon potential. Oil and Gas Journal vol.75, pp.96-100. DAVIES, E.H. & AVERY, M.P. 1984 A system for vitrinite reflectance analysis on dispersed Organic matter for offshore eastern Canada. Lq: Current Research, Part A, Geological Survey of Canada, Paper 84-114, pp.367-372. '1 GMC Data Report 111 Page 3/23 11 ! ! !i Ii Bujak Davies Group TAI Dangerous, River#1 .... 4 1 1+ 2- 2-to2 2 2to2+ 2+ 2+to3- 3- 3-to3 3 3+ 4- TABLE 1' TAI & Ro% Spore Approx. Amorphous .. Herbaceous-woody colour Ro equiv, kero~en kerogen Green/Yellow Immature Immature Yel low 0.35% Immature Immature Yel low/orange 0.45% Immature Immature Orange 0.50% Onset of maturity Immature Orange/brown 0.60% Marginally mature Immature Brown/orange 0.70% Marginally mature Onset of maturity Light brown 0.9% Peak maturity Onset of maturity L.Brown/brown 1.0% Highly mature Peak maturity Brown 1.1% Highly mature Peak maturity Med. brown 1.2% Highly mature Peak maturity Brown/df.brown 1.5% Overmature Peak maturity Dark brown 2.0% Overmature Highly mature Black 2.5% 0vermature Highly mature Black/corroded 4.0% Overmature Overmature Table 1 · Alteration Comparison of Vitrinite Reflectance (Ro%) and the Thermal Index scale (TAI) of Bujak, Barss & Williams (1977a,b). GMC Data Report 111 Page 4/23 Bujak Davies Group Dangerous River #1 APPENDIX A VITR!NITE REFLECTANCE MEASUREMENTS AND H!STROGRAM$ GMC Data Report 111 Page 5/23 Client: M.M.S. ~ell: DANGEROUS RIVER Area: ALASKA Scientist: DUMCIUS Date: JULY 1988 Samples are: F VITRINITE DATA: Sample Depth : 920.0 0.380 0.380 0.430 0.430 0.480 0.490 P 0.400 P 0.420 0.420 0.440 0.450 0.460 P 0.510 0.520 P 0.540 Actual Mean = 0.456 Actual Standard Deviation = 0.054 Edited Mean = 0.456 Edited Standard Deviation = 0.054 Com~nent : Occasional large pyrite grains; little readable vitrtnite present. 0.420 0.460 0.590 0.420 0.480 Sample Depth : 1550.0 2.580 R 2.680 R Actual Mean = 2.630 Actual Standard Deviation = 0.071 Com~nent : Abundant inorganic material; little kerogen and vitrinite present. ! ! Sample Depth : 1810.0 0.540 C 0.640 C 0.700 C 0.730 0.760 0.860 0.870 0.890 0.900 0.900 0.910 0,910 0.960 0.960 0.960 0.980 0.980 1.000 1.029 1.059 1.070 1.080 1.080 1.080 1.100 1.100 1.140 1.140 1.150 1.159 1.160 1.160 1.169 1.209 1.220 1.230 1.340 1.350 1.360 1.380 1.390 1.420 1.559 R Actual Mean = 1.069 Actual Standard Deviation = 0.218 Edited Mean : 1.070 Edited Standard Deviation = 0.167 Con~nent : Con,non pyrite; fair amount vitrinite and degraded amorphous material present. O.87O 0.910 1.000 1.090 1.160 1.340 1.480 GMC Data Report 111 Page 6/23 Sample Depth : 2390.0 0.680 C O. 730 0.780 O. 780 0.800 0.820 O. 890 O. 900 0.900 O. 920 0. 930 O. 940 O. 950 O. 970 O. 970 O. 980 O. 990 O. 990 1.030 1.040 1.050 1.050 1.060 1.080 1.090 1.100 1 . 100 1 . 120 1.130 1.140 1.160 1.210 1.240 1.240 1.250 1.250 1.280 1.290 1.300 1. 360 1.360 1.380 1.610 R Actual Mean = 1.071 Actual Standard Deviation = 0.196 Edited Mean = 1.068 Edited Standard Deviation : 0.175 Conment : Occasional pyrite; fair amount vitrinite and degraded amorphous material present. 0.840 0.940 1.020 1.090 1.160 1.280 1.400 Sample Depth : 2980.0 0.690 C 0.720 0.760 0.770 0.800 0.800 0.850 0.860 0.870 0.880 0.900 0.900 0.940 0.960 0.990 0.990 1.000 1.020 1.030 1.030 1.040 1.050 1.050 1.070 1.080 1.080 1.080 1.090 1.090 1.090 1.160 1.160 1.200 1.210 1.260 1.310 1.410 R 1.440 R 1.440 R 1.450 R 1.470 R 1.510 1.590 R Actual Mean = 1.079 Actual Standard Deviation -- 0.228 Edited Mean : 1.010 Edited Standard Deviation = 0.150 Comment : Conmon pyrite; fair amount vltrinite present. Sample Depth : 3510.0 0.710 C 0.780 P 0.800 P 0.860 P 1.060 P 1.100 P 1.490 R 1.530 R 0.910 P 0.920 P Actual Mean : 1.019 Actual Standard Deviation : 0.272 Edited Mean = 0.935 Edited Standard Deviation = 0.122 Comment : Conmon large pyrite gra!ns; small vltrinlte particles and little sample present. 0.810 0.930 1.020 1.080 1.160 1.330 1.530 1.050 ,! GMC Data Report 111 Page 7/23 Sample Depth : 3990.0 0.740 0.780 0.810 0.810 0.810 O. 860 O. 860 O. 860 O. 870 O. 880 0.900 0.900 0.900 0.910 0.920 O. 930 O. 950 O. 950 O. 950 O. 970 0.980 0.990 1.010 1.020 1.020 1.030 1.030 1.030 1.050 1.060 1.140 1.160 1.170 1.180 1. 250 1.37O Actual Mean = 0.982 Actual Standard Deviation = 0.138 Edited Mean = 0.982 Edited Standard Deviation = 0.138 ConTnent : Occasional pyrite; fair amount vitrinite present. Sample Depth : 4560.0 0.660 C 0.760 0.760 0.770 0.810 0.820 0.820 0.820 0.840 0.860 0.860 0.860 0.890 0.890 0.900 0.910 0.940 0.940 0.950 0.950 1.000 1.020 1.030 1.040 1.100 1.120 1.160 1.210 1.270 0.780 0.830 0.860 0.920 0.960 1.040 1.220 Actual Mean = 0.940 Actual Standard Deviation = 0.143 Edited Mean : 0.946 Edited Standard Deviation : 0.139 Con~nent : Occasional large pyrite; fair amount, vitrinite present. O. 830 0.890 0.920 0.970 1.020 1.070 1.270 0.800 0.830 0.870 0.930 0.960 1.050 1.220 0.840 0.900 O.930 0.980 1.030 1.120 1.280 0.800 0.840 0.870 0.930 0.980 1.090 1.250 Sample Depth : 5090.0 0.800 C 0.900 C 1.280 1.410 P 1.060 P 1.100 P Actual Mean = 1.116 Actual Standard Deviation = 0.185 Edited Mean = 1.191 Edited Standard Deviation : 0.120 Con~nent : Very little sample present. 1.120 1.170 1.200 GMC Data Report 111 Page 8/23 Sample Depth : 5690.0 0.840 C 0.880 C 0.880 C 0.890 C 0.900 C 0.920 C 0.920 £ 0.950 1.020 1.040 1.050 1.060 1.100 1.100 1.100 1.120 1.150 1.180 1.200 1.240 1.310 1.340 1.350 1.360 1. 420 1. 430 1. 440 1. 480 1.780 R Actual Mean = 1.174 Edited Mean = 1.205 Actual Standard Deviation : 0.236 . . Edited Standard Deviation : 0.162 Comment : Occasional large pyrite grains present. 0.900 0.950 1.070 1.130 1.260 1.360 1.520 0.900 1.000 1.070 1.140 1.270 1.400 1.669 0.900 1.020 1.080 1.150 1.300 1.420 1.760 Sample Depth : 6300.0 0.660 C 0.730 C 0.730 C 0.740 0.800 C 0.830 C 0.840 C 0.860 0.930 0.960 0.960 o.ggo 1.020 1.030 1.050 1.050 1.120 1.130 1.150 1.190 1.220 1.250 1.250 1.260 1.300 1.310 1.360 1.370 1.630 R C 0.750 C 0.890 0.990 1.080 1. 200 1. 270 1.480 Actual Mean = 1.080 Actual Standard Deviation : 0.238 Edited Mean : 1.158 Edited Standard Deviation : 0.155 Cor~nent : Occasional large pyrite grains; fair amount vttrinite present. 0.750 0.910 1.000 1.080 1.200 1.270 1.540 0.760 0.930 1.010 1.100 1.210 1.280 1.600 Sample Depth : 6910.0 1.120 P 1.180 P 1.210 P 1.340 P 1.450 Actual Mean : 1.260 Actual Standard Deviation = 0.133 Edited Mean ~ 1.260 Edited Standard Deviation = 0.133 Comment : Little sample present. i GMC Data Report 111 Page 9/23 Sample Depth : 7500.0 0.000 Actual Mean = 0.000 Actual Standard Deviation = 0.000 Edited Mean = 0.000 Edited Standard Deviation = 0.000 Comment : Very little sample and no vitrinite present. Sample Depth : 0.000 7980.0 Actual Mean = 0.000 Actual Standard Deviation = 0.000 Edited Mean = 0.000 Edited Standard Deviation = 0.000 Comment : Insufficient sample; not processed. Sample Depth : 8510.0 1.230 P 1.340 P 1. 390 P 1. 420 P 1.620 P 1.630 1.820 1.890 R 1.470 1.990 1.500 1.510 Actual Mean = 1.568 Actual Standard Deviation = 0.231 Edited Mean = 1.493 Edited Standard Deviation = 0.167 Comment : Abundant large pyrite grains; little sample present. GMC Data Report 111 Page 10/23 i BUJAK DAVIES GROUP ' VITRINITE SAMPLE ' 920f DANGEROUS RIVER #1 i Population Hemn S~andard Deviation In S&tu 0.46 O.O~ Caved -- -- Reworked -- -- Tote! 0.46 0.05 Tote] meaeuremente t~ta eamp~e : 20 .3 .4 .5 .6 .8 ! J.5 2 3 4 .... I . ,, I I I I ] 1. I , t'" ~ [ I ~ [ ' ' t i - ' .3 .4 .§ .6 .8 $ - t.5 2 3 4 Caved In Situ ReHorl<ed GMC Data Report 111 Page 11/23 II II BUJAK DAVIES GROUP ' VITRINZTE SAMPLE · 1550f DANGEROUS RIVER Population Hemn C~ved Rewopked Tot~] S~and~pd DevA~ton 2.83 0.07 2.63 0.07 .3 .4 .5 .§ .8 I 1.5 2 3 4 GMC Data Report 111 Page 12/23 BUJAK DAVIES GROUP ' VITRINITE SAMPLE ' i8:tOf DANGEROUS RIVER 11 Population Hean Stand~rd Dev~etiom In S&tu ~.07 0.~7 Caved 0.83 0.08 Reworked ~.49 0.07 Total $.07 0.22 Total meaeurement8 thee eample : 50 .3 .4 .5 .6 .Iii :l :1.5 2 3 4 ,. - I , I I I I I I ! · -'! - I , .. I I I I I i .3 .4 .~ .6 .8 :~ l.l~ 2 3 4' C~ved In S~.tu FIo~ori< od GNC Data Report 111 Page 13/23 BUJAK DAVIES GROUP ' VITRINITE DANGEROUS RZVER SAMPLE ' 2390f I1 Ii Popu~mtion Mean St~¢daPd Deviation In Situ i.07 0.~7 C~ved 0.~8 -- RewoPked ~.S& -- Tote] 2.07 0.20 Tot~ me~eu¢ementa t~ eample : ~0 .3 .4 .5 .IS .8 ! ~,.5 2 3 4 I , I t I I ,I 1 I I I I I I I I~ ~oo~ ~r.~ ooo~ Caved In Situ Rewor~ed ,= GMC Data Report 111 Page 14/23 BUJAK DAVIES GROUP ' VITRINI'rE SAMPLE ' 2980f DANGEROUS RIVER Popu]mt~on Mean Standard Deviation In Situ i.Ol 0.~§ Coved 0.69 -- Reworked 1.48 0.06 Toro3 ~.08 0.23 TotoZ measurements thee eompZe : ~0 .3 .4 .5 .6 .8 ! .5 2 3 4 I ,I I I ,, , ! , ! I ! -, I I I I 'l I l .3 .4 .5 .6 .8 I 1.5 2 3 4 Caved In Situ Reworked , , GMC Data Report 111 Page 15/23 BUJAK DAVIES GROUP ' VITRINITE DANGEROUS RIVER #J · SAMPLE ' 35::tOf Popular&on Memn Stend~Pd Oevt~tion Zn Situ 0.04 0.12 Caved 0.71 -- Rewopked 3.51 0.03 Total ~.02 0.27 Total meaeunemente thte eample : ~ .! i o3 .4 .5 .6 .8 1 1,5 2 3 4 . I I I . ~ I I .... I ~. %----__ - Ia ~ ~ ~ '~' ' ' '1 · .4 .5 .6 .8 t 1.5 2 3 4 ..... ~ ~,~ ~, - C~ved In 8itu ~e~oeked , ..... _ . . .... GMC Data Report 111 Page 16/23 BUJAK DAVIES GROUP ' VITRINITE DANGEROUS RIVER #:t SAMPLE ' 3ggof Popu]atto~ Mean Stand~rd De¥iatton In 8itu 0.90 0.~4 Caved -- -- Reworked -- -- Tote2 0.98 0.~4 Total meaeuremente thee eample : 50 .3 .4 .5 .6 .8 I 1.5 2 3 4 t .t I ~1 I ,, ,I I I ' ' ' ~ I ' ".-'i ~ . ~ ' ' I t' .3 .4 .5 .6 .8 I 1.$ 2 3 ' 4 Caved In Sttu Ftoworked , GMC Data Report 111 Page 17/23 BUJAK BAVZES GROUP · VZTRZNZYE DANGEROUS RZVER #1 ' : SANPLE ' 4560f Standard Deviation In ~itu 0.05 0.14 Caved O.G6 - Rswopked -- - Total O.g4 0,14 Total measurements this sample : 50 .3 .4 .5 .8 ,8 t I I I I I t.5 '3 ' · .4 Caved .5 .6 .B In Situ ! Reworked GMC Data Report 111 Page 18/23 II tl BUJAK DAVIES GROUP ' VITRINITE SAMPLE ' 5090f DANGEROUS RIVER #1 11 11 !i Population Mean Standapd Deviation In Sttu 1.19 0.12 Caved 0.85 0.07 Rewopked -- -- Total ~. ~2 0.38 Total me&suPements t~is sample I .3 .4 .5 .6 .8' t I I I I I I I I .3 .4 .5 .6 Cave~ In Situ 1.5 2 t.5 Reworked GMC Data Report 111 Page 19/23 BUJAK DAVIES GROUP ' V'rTRTNITE SAMPLE ' 5590f DANGEROUS RZVER #~. !11 II Popu)ation Mean Standard Deviation In Sttu ~.20 Caved O.Bg 0.02 Reworked ~.74 O.O6 Tote) &.~7 0.24 Tote) measurements this samp)e : 50 .3 .4 .5 .6 ,8 ~ ~.5 2 3 4 I I. I I I I I I i 1 I I I I I ,3 .4 .5 .6 .8 1 1 .§ 2 3 4 [] poo. ~ oood [] Caved Tn SStu Reworked GMC Data Report 111 Page 20/23 t BUJAK DAVIES GROUP ' VITRINITE DANGEROUS RIVER' SAMPLE ' 6300f Population Mean Standard Deviation In Situ 1.16 0.1§ Caved 0.79 0.07 Reworked t.82 0.02 Tota~ 1.08 0.24 Total measurements this sample : 50 .3 .4 .5 .6 .8 ! ].5 2 3 4 .3 .4 .5 .§ .8 ! :1.5 2 3 4 Caved In S'ttu Reworked .,11 GMC Data Re port 111 Page 21/23 BUJAK DAVIES GROUP ' VITRINTTE SAMPLE ' 6910f DANGEROUS RIVER Population Mean Standard Deviation In S&tu ~.26 0.=3 Caved -- -- Reworked - -- Total ~.26 0.13 Total measurements this sample .3 .4 .5 .8 .8 ~, .5 2 3 4 I I t I I I I I --__, -._~_ .--.- ..--. ---. f I ' I I I [- I I I Caved In Situ Reworked GMC Data Report 111 Page 22/23 BUJAK DAVIES GROUP ' VITRINITE SAMPLE ' 85'10f DANGEROUS RIVER Popu~ation Mean Standand Deviation In S&tu ~.49 O.~7 Caved -- -- Reworked i.94 0.07 Tota] ~.57 0.23 measurements t~ta eamp]e : 32 ! .3 .4 .5 .6 .8 $ ~.5 2 3 4 GMC Data Report 111 Page 23/23