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Geochemical Data Report Well 7131/4-1 (Guovca) Applied Petroleum Technology AS P. O. Box 123 2027 Kjeller Norway

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Page 1: Geochemical Data Report Well 7131/4-1 (Guovca) · PDF file · 2009-11-30Geochemical Data Report Well 7131/4-1 ... C1 70.6 0.7 0.9 30 C2 137.8 0.9 0.7 30 C3 199.9 1.4 0.8 30 iC4 279.9

Geochemical Data ReportWell 7131/4-1 (Guovca)

Applied Petroleum Technology ASP. O. Box 1232027 Kjeller

Norway

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Address: Applied Petroleum Technology ASP.O.Box 1232027 Kjeller

Telephone: +47 63 80 60 00Telefax: +47 63 80 11 38

Report numberAPT05-873

Report TitlePetroleum Geochemistry Data Report well 7131/4-1 (Guovca)

ClientStatoil ASA

Client ReferenceTurid Heide/Ann Elin Gilje

ClassificationConfidential

Submitted

Service OrderAPT05-04

Number of pages147

DistributionStatoil ASA (5)APT(1)

AuthorsPer Erling JohansenKjell UrdalBine Nyj ordetRagnild NøstPål Tore Mørkved

Name

Reviewed by

Approved by

Geir Hansen

Tore Haaland

Date

2005-10-26

2005-10-26

Signature

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SINTEFSINTEF Petroleumsforskning ASSINTEF Petroleum Research

NO-7465 Trondheim

Telephone: (+47)73 59 11 00Fax: (+47)73 59 11 02 (aut.)

Enterprise No.:NO 936 882 331

REPORTTITLE

Analysis of headspace and occluded gas (C1-C9) from well7131/4-1

AUTHOR(S)

Torun Vinge, Hermann Michael Weiss

CLASSIFICATION

Confidential

CLIENT(S)

StatoilREPORT NO.

24.4506.07

REG. NO.

2005.058

NO. OF PAGES

28

DATE

25 August 2005PROJECT MANAGER

Torun Vinge

NO. OF APPENDICES LINE MANAGER

Ute Mann

APPROVED

UteMann

Digitally signed by UteMannDN: cn=Ute MannReason: I am approvingthis documentDate: 2005.08.2512:52:46 +02'00'

SUMMARY

This report contains tables and figures with data from gas chromatographic analysis of headspace andoccluded gas from 5 canned cuttings samples from well 7131/4-1. The yields (in (xl/kg dry rock) andrelative proportions (in volume %) of 68 hydrocarbon compounds ranging from Cl to C9 are tabulated.Some geochemically relevant peak ratios are also listed and plotted.

KEYWORDS ENGLISH KEYWORDS NORWEGIAN

Well 7131/4-1

Organic geochemistry

Gas analysis

Brønn 7131/4-1

Organisk geokjemi

Gassanalyse

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Table of Contents

1. Introduction 32. Experimental 3

2.1 Headspacegas 32.2 Occluded gas 32.3 Samples for isotope analysis 32.4 Gas chromatographic analysis 32.5 Identification 42.6 Quantification 72.7 Concentrations and ratios 72.8 Water content 9

3. Comments on samples and analytical data 94. Results 10

Table 4.1 Sample description 11Table 4.2 Water contents of different grain size fractions 13Table 4.3 Yield of hydrocarbons in headspace and occluded gas

(ul/kg dry rock) 15Table 4.4 Composition of hydrocarbons in headspace and occluded

gas (volume %) 18Table 4.5 Ratios and summary data 21Figures 4.1 to 4.5 Ratios and summary data vs. depth 23

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1. Introduction

Five canned cutting samples from the well 7131/4-1 were received from Statoil for gaschromatographic analysis of the Cl to C9 hydrocarbons contained in the headspace andoccluded gas.

This report contains the results of the analyses. The hydrocarbon concentrations areexpressed as \±l gas per kg of dried cuttings. The hydrocarbon composition is expressedin volume percent of all recorded hydrocarbons.

Aliquots of the headspace and occluded gas were sampled in vacuum tubes and sent toApplied Petroleum Technology AS, Norway (APT) for isotope analyses.

2. Experimental

2.1 Headspace gas

A septum was attached to the can and a sample of headspace gas was taken and injectedinto a gas chromatograph for analysis of Cl to C9 hydrocarbons.

The can was opened and the volume of the headspace was determined. The cuttingswere washed with water (ca. 30 °C) on 4.0, 1.0 and 0.125 mm sieves in order to removethe drilling mud, and were then weighed and dried.

2.2 Occluded gas

Prior to drying, an aliquot of the 1-4 mm fraction was crushed in water for 10 minutesusing a gas-tight ball mill. An aliquot of the evolved gas was injected into a gaschromatograph for analysis of Cl to C9 hydrocarbons.

2.3 Samples for isotope analysis

10 ml of each gas fraction (headspace and occluded gas) were extracted from allsamples and injected to vacuum-based test tubes provided by Applied PetroleumTechnology AS, Norway (APT). The tubes were sent to APT for analyses.

2.4 Gas chromatographic analysis

The gas was analysed on a gas chromatograph fitted with an gas injector. The GCtemperature program started at 35 °C, since separation of alkenes from alkanes was ofno interest in this project. The instrument was fitted with a capillary column connectedto an FID for hydrocarbon detection. Details of the instrumentation are listed in Table2.1.

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Table 2.1 Analytical equipment

Gas chromatographInjectorColumns

Carrier gasDetectorTemperature programChromatographic data system

Agilent 6890Gas injector connected to a 1.0 ml loopHP-PONA column: 50 m x 0.20 mm i.d, 0.5 umfilm thickness.HeliumFID (250 °C)35 °C (5 min.) - 8 °C/min. - 180 °C (10 min.)HP ChemStation Rev. A. 10.01

2.5 Identification

Peaks were identified based on three Supelco Reference Standards, guidelines in "TheNorwegian Industry Guide to Organic Geochemical Analyses" (Edition 4.0) andinternal procedures. Figure 2.1 shows a gas chromatogram with the annotation used inthis project. Identified compounds, retention indices and comments are listed in Table2.2.

Table 2.2 Identified compounds with retention indices (RI) and comments. Forpeak labels see explanation below the table.

Peak labelC1C2C3iC4C4enenC42.2-DMC3iC5nC52.2-DMC4CyC5 + 2.3-DMC42-MC53-MC5nC6MCyC52.4-DMC5BenzeneCyC62-MC62.3-DMC51,1-DMCyC53-MC6c-1,3-DMCyC5M,3-DMCyC5t-1,2-DMCyC5 + 3-EC5 + 2,2,4-TMC5nC7MCyC6 + c-1,2-DMCyC52.2-DMC6 +1,1,3-TMCyC52.5-DMC6 + 2,2,3-TMC52.4-DMC63.3-DMC6 + t-1,c-2,4-TMCyC5

RI (Kovåts)100158 + 200300354385400410467500531561565581600627630651661668670674676684687690700725727734736744

Comments

Includes ethane and etheneIncludes propane and propene

Separated in some analyses, but summed up in the tables

May include E-CyC5

May include c-1 ,t-2,4-TMCyC5

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t-1 ,c-2,3-TMCyC52,3,4-TMC5Toluene + 2,3,3-TMC52.3-DMC62-M, 3-EC52-MC74-MC7 + 3-M.3-EC53.4-DMC63-MC7 + c-1 ,t-2,3-TMCyC5Rl=781 (DMCyC6)Rl=783 (DMCyC6)RI=790Rl=794Rl=796nC8RI=805RI=807Rl=815Rl=821Rl=825RN831Rl=834Rl=838Rl=843Rl=847Rl=848E-BenzeneRl=859m+p-XyleneRl=8674-MC8 + 2-MC8Rl=883o-XyleneRI=890Rl=893Rl=896nC9

751754759763765768769773775781783790794797800805807815821825831834838843847848855860863867874883886890893896900

May include 1,1,2-TMCyC5

May also include an isomer of 3.4-DMC6IsomerMay also include c-1,3-DMCyC6Possibly a DMCyC6 isomerPossibly a DMCyC6 isomerPossibly a DMCyC6 isomer, minimum 2 compoundsPossibly a DMCyC6 isomer, minimum 2 compoundsPossibly CyC7 or a DMCyC6 isomerMinimum 2 compoundsUnknownUnknownUnknownUnknownPossibly 2.2-DMC7 or 2.4-DMC7Possibly 2.4-DMC7 or ECyC6Unknown, minimum 2 compoundsPossibly ECyC6 and/or 2.6-DMC7, minimum 2 compoundsUnknownUnknownUnknown

Unknown, minimum 2 compounds

Unknown

Possibly 3-MC8

UnknownUnknownUnknown

Explanations:

Structural groups

n = normali = isoCy = cyclo

Parent structures

C1 = methaneC2 = ethaneetc.

Numbers offunctional groupsD = diT = tri

Names offunctional groupsM = methylE = ethylP = propyl

Stericconfigurationsc = ast = transo = orthom = metap = para

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Ni f5 a/ I. U i

i i

S/..L i.\..

ti1 r K t

Figure 2.1 Gas chromatogram with annotation. Expanded views ofCl to n-C6, n-C6 to n-C7, n-C7 to n-C8 and n-C8 to n-C9 ranges.

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2.6 Quantification

A 1000 ppm (fJ.1/1) standard gas sample containing methane, ethane, propane, i-butane,n-butane, n-pentane and n-hexane was used for quantification. The variation betweenall standard analysed over a period was small (Table 2.3), and the average responsefactors were used for quantification of all samples. The response factor for n-C5 wasused for all compounds eluting between n-C4 and n-C5 and so on. For the C6-C7, C7-C8 and C8-C9 component groups the response factors were extrapolated based onmolecular mass.

A 100 ppm (|ul/l) standard gas sample containing methane, ethane, propane, n-butane,n-pentane and n-hexane was used for control of linearity.

Rock-related concentrations (in ul/kg) for compounds having a concentration of lessthan 0.2 ppm (^il/l) in the analysed gas are not reported, as this corresponds to an area ofabout 0.08, which is the lowest reliable area in the gas chromatograms.

Table 2.3 Results from analyses of 1000 ppm standard (based on peak area)

Average peak areaStdev.Stdev. (% of average)n

C170.60.70.930

C2137.8

0.90.730

C3199.9

1.40.830

iC4279.9

2.10.730

nC4286.0

2.40.830

nC5327.2

3.71.130

nC6371.6

7.72.130

2.7 Concentrations and ratios

The yields of hydrocarbons (|il/kg dry rock) in headspace (H) and occluded (O) gas andthe sum of H + O are given in Table 4.3, and the hydrocarbon composition (volume %)is given in Table 4.4. Selected summary data and peak ratios are calculated and reportedin Table 4.5. Abbreviations used in Table 4.5 are explained in Table 2.4.

As coelution of 3-EC5 and 2,2,4-TMC5 with t-l,2-DMCyC5 and of c-l,2-DMCyC5with MCyC6 cannot be avoided at the chosen experimental conditions, only some ofthe Mango ratios can be calculated (see tables).

Table 2.4 Explanations of the variables listed in Table 4.5.

Abbreviation Explanation

Hydrocarbon yields for selected C-number rangesCncC1 Concentration of C1 (ul/kg dry rock)CncC2C4 Concentration of C2 through n-C4 (ul/kg dry rock)CncC5C9 Concentration of C5 through n-C9, i.e. all peaks eluting after n-C4 (ul/kg dry rock)CncC1 C9 Sum of these concentrations

Hydrocarbon composition for selected C-number rangesPctC1 Fraction of C1 (% volume of all C1-C9 HC)PctC2C4 Fraction of C2 through n-C4 (% volume of all C1-C9 HC)PctC5C9 Fraction of C5 through n-C9, i.e. all peaks eluting after n-C4 (% volume of all C1-C9 HC).PctC1 C9 Sum of these fractions (= 100 vol %)

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Table 2.4 Continued

Abbreviation Explanation

Wetness and i-C4/n-C4 ratioWetness 100* (Sum C2 to n-C4) / (Sum C1 to n-C4) (volume %)Ratic4nc4 Volume ratio i-C4 / n-C4

Composition of C7 hydrocarbons by compound classPctnC7 Fraction of n-alkanes in n-C7 range (volume % of all C7 compounds)PctlsoC7 Fraction of iso-alkanes in n-C7 range (volume % of all C7 compounds)PctCycC7 Fraction of cycloalkanes in n-C7 range (volume % of all C7 compounds)PctAroC7 Fraction of aromatics in n-C7 range (volume % of all C7 compounds)PctSumC7 Sum of these fractions (= 100 vol %)

Thompson ratios (mass ratios), assessed property in bracketsThompson_A A = Benzene / n-Hexane [Aromaticity (fractionation)]Thompson_B B = Toluene / n-Heptane [Aromaticity (fractionation)]Thompson_X X = Xylene (m & p) / n-Octane [Aromaticity (fractionation)]Thompson_C C = (n-Hexane + n-Heptane) / (Cyclohexane + Methylcyclohexane) [Paraffinicity (maturity)]Thompson_l I = Isoheptane value = (Methylhexanes (2- & 3-)) / (Dimethylcyclopentanes ( d ,3-, t1,3-, & t1,2-))

[Paraffinicity (maturity)]Thompson_F F = n-Heptane / Methylcyclohexane [Paraffinicity (maturity)]Thompson_H H = Heptane Value = 100 * n-Heptane / (Sum Cyclohexane through Methylcyclohexane, excluding cis-

1,2-Dimethylcyclopentane) [Paraffinicity (maturity)]

Thompson_R R = n-Heptane / 2-Methylhexane [Normality (branching)]ThompsonJJ U = Cyclohexane / 2-Methylhexane [Normality (branching)]

Mango ratios (mass ratios)Mango_P1 P1 = n-C7 (mass% of sum C7 HC) [first parents in SS kinetic scheme], Mango 1994

Mango_P2 P2 = 2-MC6 + 3-MC6 (mass% of sum C7 HC) [second parent in SS kinetic scheme], Mango 1994

Mango_P3 P3 = 3-EC5 + 3.3-DMC5 + 2.3-DMC5 + 2.4-DMC5 + 2.2-DMC5 + 2,2,3-TMC4 (mass% of sum C7 HC)[daughter isoalkane product of P2], Mango 1994 [Remark 1]

Mango_N15 N15 = ECyC5 + c-1,2-DMCyC5 + t-1,2-DMCyC5 (mass% of sum C7 HC) [Daughter cyclopentane

products of P2], Mango 1994 [Remark 2]

Mango_N16 N16 = MCyC6 + TOLUENE (mass% of sum C7 HC) [Daughter cyclohexane products of P1], Mango 1994

Mango_N2 N2 = 1,1-DMCyC5 + c-1,3-DMCyC5 + t-1,3-DMCyC5 (mass% of sum C7 HC) [Daughter cyclopentane

products of P2], Mango 1994 [Remark 3]

Mango_K1 K1 = (2-MC6 + 2.3-DMC5) / (3-MC6 + 2.4-DMC5), Mango 1987 in Mango 1994

Mango_K2 K2 = P3 / (P2 + N2) = (3-EC5 + 2.3-DMC5 + 2.4-DMC5 + 2.2-DMC5 + 2,2,3-TMC42) / (2-MC6 + 3-MC6 +

1,1-DMCyC5 + c-1,3-DMCyC5 +1-1,3-DMCyC5) (Mango 1990 in Mango 1994)

Mango_N15N16 N15/N16 = k15/k16 [a ratio of P1 daughters], Mango 1994

Mango_P3N2 P3/N2 = k23/k25 [a ratio of P2 daughters], Mango 1994Remarks on Mango ratiosRemark 1 The 2,2,3-TMC4 peak is consistently called "2,3,3-TMC4" in the Mango papers, but this is probably a

mistyping, as 2,3,3-TMC4 is normally not identified.

Remark 2 Actually N, , where 1 means the first daughter generation and 5 stands for the parent cyclopentane.Remark 3 Analog to N15.

Coelution of compounds'CyC5' contains coeluting 2.3-DMC4.'t-1,2-DMCyC5' contains coeluting 3-EC5 and 2,2,4-TMC5. The Mango ratios P3 and N15 can therefore not be calculated.The Thompson ratios H and I may be slightly affected.'MCyC6' contains coeluting c-1,2-DMCyC5. The Mango ratios N15 and N16 can therefore not be calculated. TheThompson ratios C, F and H may be slightly affected.Toluene coelutes with 2,3,3-TMC5 and 'n-C8' contains an unknown coeluting compound. The Thompson ratios B, H and Xmay be slightly affected.

ReferencesMango, F.D. (1987): An invariance in the isoheptanes of petroleum. Science 237, 514-517.Mango, F.D. (1990): The origin of light hydrocarbons in petroleum: A kinetic test of the steady-state catalytic hypothesis. Geochimica et

Cosmochimica Ada 54, 1315-1323.Mango, F.D. (1994): The origin of light hydrocarbons in petroleum: Ring preference in the closure of carbocyclic rings. Geochimica et

Cosmochimica Acta 58, 895-901.Thompson, K.F.M. (1987): Fractionated aromatic petroleums and the generation of gas-condensates. Organic Geochemistry 11, 573-590.

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2.8 Water content

The water content of the cuttings was determined by weighing the fractions before andafter drying at 35 °C for at least 24 hours. The dry weight of the rock used for occludedgas analysis was determined using the wet weight of this rock and the water content ofthe remaining 1-4 mm fraction. Water contents for the three individual grain sizefractions are listed in Table 4.2.

3. Comments on samples and analytical data

The wet cutting samples were received in pressure-lid cans of 1 1 volume at ambienttemperature. Secondary modification of the gas composition by microbial activitycannot be completely ruled out.

Sample descriptions are listed in Table 4.1.

One of the samples, H6167 at 931 m depth, contained no fraction above 4 mm, and avery small fraction between 1 and 4 mm. The whole of this fraction was used in theoccluded gas analyses, and the water content was estimated and set to 30 %.

Some of the peak ratios show erratic values for the shallowest sample. This is typicallydue to low concentration or absence of the respective compounds. Care should,therefore, be taken in the interpretation of these ratios. Also note the remarks in Table2.4 on the possible effects of coelution on the various peak ratios.

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4. Results

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Table 4.1Sample description

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Table 4.1 Sample description. Lithologies in order of decreasing abundance.

Sample Btm LithologyID Depth (numbers represent roughly estimated

(m RKB) percentages)

Gas Gas Rock Rockvolume volume weight weight

headspace occluded total occluded(ml) (ml) sample sample

dry (g) dry (g)

H6163 811 55 SLST-SST(vfgr), calc cmt., wt-ltgy45 CLYST, redtr SH, blk

H6164 841 60 CLYST, red20 CLYST, gn-gy20 LST, wt, with PY crystalstr CLYST, blk

H6165 871 100 CLYST, blk-vdkgytr CLYST, redtr LST, wt, with PY crystals

H6166 901 >45 CLYST/SH, dkgy-blk20 SH-SLST (calc), mgy20 CLYST, red<10 SST, mgr-cgr, wt, glauc.few % QTZ grainsfew % LST with PY crystals

H6167 931 Only 125 | jm-1 mm fraction available:99 QTZ grains1 PY crystals

284 20.0 154.9

244 30.4 221.5

288

225

18.5

20.8

383.4

391.3

282 30.7 406.7

9.7

16.5

16.0

15.3

2.7

Key: SH = shale, SLST = siltstone, SST = sandstone, DOL = dolomite, LST = limestone, ADD = mud additive, PY = pyrite, cc =calcite, cmtd = cemented, tr = trace, vfgr = very fine grained, gy = grey, dk = dark, m = medium, It = light, wt = white.

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Table 4.2Water contents of different grain size fractions

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Table 4.2 Water contents of different grain size fractions.

SampleID

H6163H6164H6165H6166H6167

BtmDepth

811841871901931

Water content>4 mm fraction

(wt% of wet fraction)50.018.025.227.8

-1 1

Water content4-1 mm fraction

(wt% of wet fraction)47.122.828.124.5

30.02

Water content1-0.125 mm fraction

(wt% of wet fraction)39.827.137.820.520.1

Water content>0.125 mm

(wt% of wet fraction)40.823.329.222.720.0

Comments:1) No fraction2) Estimated value due to a very small sample amount

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Table 4.3Yield of hydrocarbons in headspace and occluded gas

(uJ/kg dry rock)

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Table 4.3 Yield of hydrocarbons in headspace and occluded gas (fil/kg dry rock).

Sample-IDGas fractionDepth (m)

H6163H

811

2342239164190121101323401100011112200000010000000000010000000000000100000000

H61630

811

445210101101323110031162234721222001022035212041100111441113111101211

H6163H+O811

2772741174200131302637511142162345921222011022035212051100111441113211101211

H6164H

841

2940200212891

1011

73310613862511211023352600111010010001001010000000010000100000001

H6164O

841

42356241021901914027561001121022233400111010010011001010000000010000000000000

H6164H+O841

3363256236994

119192440920131235123320466851000311020020011011020000000120010100000001

H6165H

871

167685656028588821

6831

399146024593621100226440916162662010645020030013125031100111141020100011001

H6165O

871

179294413615041

6510

41321002686503610733665013191929102110756030051013125041100111141020100011001

H6165H+O871

169477750542191386

21334

1811356150144865720855121091

22343455164021149111511810363410171110122391131211011011

CompoundC1C2C3iC4C4enenC42.2-DMC3iC5nC52.2-DMC4CyC5 + 2.3-DMC42-MC53-MC5nC6MCyC52.4-DMC5BenzeneCyC62-MC62.3-DMC51,1-DMCyC53-MC6c-1,3-DMCyC5t-1,3-DMCyC5t-1,2-DMCyC5 + 3-EC5 + 2,2,4-TMC5nC7MCyC6 + c-1,2-DMCyC52,2-DMC6 + 1,1,3-TMCyC52.5-DMC6 + 2,2,3-TMC52.4-DMC63.3-DMC6 +t-1,C-2,4-TMCyC5t-1,c-2,3-TMCyC52,3,4-TMC5Toluene + 2,3,3-TMC52.3-DMC62-M, 3-EC52-MC74-MC7 + 3-M.3-EC53.4-DMC63-MC7 + c-1,t-2,3-TMCyC5RN781 (DMCyC6)RN783 (DMCyC6)RI=790Rl=794Rl=796nC8RI=805RI=807Rl=815Rl=821Rl=825Rl=831Rl=834Rl=838Rl=843Rl=847Rl=848E-BenzeneRl=859m+p-XyleneRl=8674-MC8 + 2-MC8Rl=883o-XyleneRI=890RN893Rl=896nC9Sum FID 382 152 534 3743 628 4371 179621 6380 186002

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Table 4.3 Continued

Sample-IDGas fractionDepth (m)CompoundC1C2C3iC4C4enenC42.2-DMC3iC5nC52.2-DMC4CyC5 + 2.3-DMC42-MC53-MC5nC6MCyC52.4-DMC5BenzeneCyC62-MC62.3-DMC51,1-DMCyC53-MC6c-1,3-DMCyC5t-1,3-DMCyC5t-1,2-DMCyC5 + 3-EC5 + 2.2.4-TMC5nC7MCyC6 + o1,2-DMCyC52,2-DMC6 + 1,1,3-TMCyC52.5-DMC6 + 2,2,3-TMC52.4-DMC63.3-DMC6 + t-1,c-2,4-TMCyC5t-1,c-2,3-TMCyC52,3,4-TMC5Toluene + 2,3,3-TMC52.3-DMC62-M, 3-EC52-MC74-MC7 + 3-M.3-EC53.4-DMC63-MC7 + c-1,t-2,3-TMCyC5Rl=781 (DMCyC6)RN783 (DMCyC6)RI=790Rl=794RN796nC8RI=805RI=807Rl=815Rl=821Rl=825Rl=831Rl=834Rl=838RN843Rl=847Rl=848E-BenzeneRl=859m+p-XyleneRl=8674-MC8 + 2-MC8Rl=883o-XyleneRI=890Rl=893Rl=896nC9

H6166H

901

187691468794307

1256

1170680

1230191252114220588

153

1210323010020012112020000000120010100000000

H61660

901

687444926488

1720

2552344

145

1669382

20864

1416121

32414169265341

1713161411

13215945

131

1032112324

112141211012112

H6166H+O901

1945519111720795

2977

3722412

157

19611293

26175

1819142

37505084296642

2116191521

14315

1156

161

1232212435

132152311022112

H6167H

931

605715440

1350

371603

1064

1600111024462600212000010001111010000000110010000000000

H6167O

931

7561821115121

1050

126120

019784460

12553

101490

29363756355530

2416190700

19306

146

10230

2153303758

2252

115744006036

H6167H+O931

13612531659123

1400

163137

022885065

14154

1115100

31404162376040

2618200700

20307

157

10240

2353303769

2453

115844006036

Sum FID 22054 5245 27300 947 2368 3314

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8 Q8 SINTEF

Table 4.4Composition of hydrocarbons in headspace and occluded gas

(volume %)

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Table 4.4 Composition of hydrocarbons in headspace and occluded gas (volume %).

Sample-IDGas fractionDepth (m)CompoundC1C2C3iC4C4enenC42.2-DMC3iC5nC52.2-DMC4CyC5 + 2.3-DMC42-MC53-MC5nC6MCyC52.4-DMC5BenzeneCyC62-MC62.3-DMC51,1-DMCyC53-MC6c-1,3-DMCyC5t-1,3-DMCyC5t-1,2-DMCyC5 + 3-EC5 + 2.2.4-TMC5nC7MCyC6 + c-1.2-DMCyC52,2-DMC6 + 1,1,3-TMCyC52.5-DMC6 + 2,2,3-TMC52.4-DMC63.3-DMC6 +1-1 ,c-2,4-TMCyC5t-1,c-2,3-TMCyC52,3,4-TMC5Toluene + 2,3,3-TMC52.3-DMC62-M, 3-EC52-MC74-MC7 + 3-M.3-EC53.4-DMC63-MC7 + c-1,t-2,3-TMCyC5Rl=781 (DMCyC6)Rl=783 (DMCyC6)RI=790Rl=794Rl=796nC8RI=805RN807RN815Rl=821Rl=825Rl=831Rl=834Rl=838Rl=843Rl=847Rl=848E-BenzeneRl=859m+p-XyleneRl=8674-MC8 + 2-MC8Rl=883o-XyleneRI=890Rl=893Rl=896nC9

H6163H

811.0

61.15.8

10.34.21.05.10.03.32.90.00.40.80.40.81.00.00.10.30.10.10.00.10.10.20.20.40.50.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.20.00.00.00.00.00.00.00.00.00.00.00.00.00.20.00.00.00.00.00.00.00.1

H6163o

811.0

28.83.41.30.40.00.70.00.60.90.00.42.01.02.30.80.50.00.02.10.90.53.71.21.51.92.44.61.40.61.21.61.60.00.00.50.01.61.10.31.93.41.20.81.10.02.80.50.60.00.00.50.80.52.92.70.60.30.51.70.60.70.60.50.00.91.00.50.6

H6163H+O

811.0

51.95.17.73.10.73.80.02.52.40.00.41.10.61.20.90.10.10.20.70.30.11.10.40.50.71.01.60.40.20.30.50.50.00.10.10.00.50.30.10.51.00.30.20.30.01.00.10.20.00.00.10.20.10.80.80.20.10.10.50.30.20.20.20.00.20.30.10.3

H6164H

841.0

78.55.35.72.40.02.70.02.00.80.00.20.30.20.20.70.00.00.10.00.00.00.00.10.10.10.10.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

H6164o

841.0

67.38.83.81.60.33.00.03.02.20.00.41.20.80.91.60.10.10.20.20.10.00.30.30.40.50.50.60.00.00.20.10.10.00.10.00.00.20.00.00.10.10.00.10.10.00.20.00.00.00.00.00.00.00.10.10.00.00.10.00.00.00.00.00.00.00.00.00.1

H6164H+O

841.0

76.95.85.42.30.12.70.02.11.00.00.20.50.30.30.80.00.00.10.10.00.00.10.10.10.20.10.20.00.00.10.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

H6165H

871.0

93.43.71.60.50.00.40.00.20.10.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

H6165o

871.0

28.114.821.3

7.90.0

10.20.06.53.30.00.41.30.80.61.70.00.00.10.10.10.00.20.30.30.50.20.30.00.00.10.10.10.00.00.00.00.10.00.00.00.00.00.00.10.00.10.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.0

H6165H+O

871.0

91.14.02.30.70.00.70.00.40.20.00.00.10.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Sum FID 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0

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Table 4.4 Continued

Sample-IDGas fractionDepth (m)

H6166H

901.0

85.16.73.61.40.01.20.00.80.30.00.10.10.10.10.20.00.00.00.00.00.00.00.00.00.10.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

H6166o

901.0

13.18.5

17.69.30.0

13.70.0

10.56.60.00.93.21.81.64.00.10.10.30.30.20.00.60.80.81.30.51.00.10.00.30.30.30.00.10.00.00.20.00.00.10.20.10.10.30.00.20.00.00.00.00.00.10.00.10.20.00.00.10.00.00.00.00.00.00.00.00.00.0

H6166H+O

901.0

71.37.06.32.90.03.60.02.61.50.00.20.70.40.31.00.00.00.10.10.10.00.10.20.20.30.10.20.00.00.10.10.10.00.00.00.00.10.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

H6167H

931.0

63.97.55.74.20.13.70.03.91.70.00.31.10.60.51.60.00.00.10.10.10.00.30.40.40.60.20.60.00.00.20.10.20.00.00.00.00.10.00.00.10.10.10.10.10.00.20.00.00.00.00.00.00.00.10.20.00.00.10.00.00.00.00.00.00.00.00.00.1

H6167O

931.0

31.97.74.72.20.94.40.05.35.10.00.83.31.92.55.30.20.10.40.60.40.01.21.51.62.41.52.30.10.01.00.70.80.00.30.00.00.80.10.00.30.60.30.41.00.00.90.20.10.10.00.10.30.20.30.90.20.10.50.20.30.20.20.00.00.20.00.10.2

H6167H*O

931.0

41.17.65.02.80.74.20.04.94.10.00.72.71.51.94.30.20.10.30.50.30.00.91.21.21.91.11.80.10.00.80.50.60.00.20.00.00.60.10.00.20.40.20.30.70.00.70.20.10.10.00.10.20.20.30.70.20.10.30.10.20.10.10.00.00.20.00.10.2

CompoundC1C2C3iC4C4enenC42.2-DMC3iC5nC52.2-DMC4CyC5 + 2.3-DMC42-MC53-MC5nC6MCyC52.4-DMC5BenzeneCyC62-MC62.3-DMC51,1-DMCyC53-MC6c-1,3-DMCyC5t-1,3-DMCyC5t-1,2-DMCyC5 + 3-EC5 + 2,2,4-TMC5nC7MCyC6 + c-1,2-DMCyC52.2-DMC6 + 1,1,3-TMCyC52.5-DMC6 + 2,2,3-TMC52.4-DMC63.3-DMC6 + t-1,c-2,4-TMCyC5t-1,c-2,3-TMCyC52,3,4-TMC5Toluene + 2,3,3-TMC52.3-DMC62-M, 3-EC52-MC74-MC7 + 3-M.3-EC53.4-DMC63-MC7 + c-1,t-2,3-TMCyC5Rl=781 (DMCyC6)Rl=783 (DMCyC6)RI=790Rl=794Rl=796nC8RI=805RI=807Rl=815Rl=821Rl=825Rl=831Rl=834Rl=838Rl=843Rl=847Rl=848E-BenzeneRl=859m+p-XyleneRl=8674-MC8 + 2-MC8Rl=883o-XyleneRI=890Rl=893Rl=896nC9Sum FID 100.0 100.0 100.0 100.0 100.0 100.0

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SINTEF

Table 4.5Ratios and summary data

(See Table 2.4 for explanations and comments;-1 = ratio cannot be calculated)

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Table 4.5 Ratios and summary data. (See Table 2.4 for explanation and comments;-1 = ratio cannot be calculated

Sample-IDGas fractionDepth (m)CompoundCncC1CncC2C4CncC5C9CncC1C9PctC1PctC2C4PctC5C9PctC1C9WetnessRatiC4nC4PctnC7PctlsoC7PctCycC7PctAroC7PctSumC7Thompson_AThompson_BThompson_XThompson_CThompsonJThompson_FThompson_HThompson_RThompson_UMango_P1Mango_P2Mango_N2Mango_K1

H6163H

811

234

101

47

382

61.126.412.4

100.030.2

0.8

22.618.052.0

7.4

100.00.2

0.4

1.0

1.5

0.5

0.8

20.34.3

2.9

22.6312.6216.061.43

H6163O

811

44

9

100

152

28.85.7

65.5100.016.6

0.6

12.537.150.4

0.0

100.00.0

0.0

0.2

0.9

1.3

0.5

12.41.1

0.0

12.4830.1816.310.72

H6163H+O811

277

110

147

534

51.920.527.6

100.028.3

0.8

14.533.350.7

1.5

100.00.1

0.1

0.4

1.1

1.1

0.5

14.11.5

0.3

14.5126.6816.260.78

H6164H

841

2940603

201

374378.516.1

5.4

100.017.0

0.9

8.6

16.269.6

5.6

100.00.3

0.7

0.6

0.9

0.2

0.3

8.3

2.1

2.0

8.6310.5126.37

0.89

H6164O

841

423

111

94

628

67.317.615.0

100.020.7

0.5

14.524.756.7

4.0

100.00.2

0.3

0.0

1.6

0.5

0.7

14.31.9

0.7

14.5418.1222.100.95

H6164H+O841

3363713

295

437176.916.3

6.8

100.017.5

0.8

11.219.963.9

4.9

100.00.2

0.5

0.3

1.2

0.3

0.5

10.92.0

1.2

11.2413.8724.49

0.93

H6165H

871

16768510984

952

17962193.4

6.1

0.5

100.06.1

1.3

6.0

17.574.5

2.0

100.00.1

0.4

0.4

0.9

0.2

0.3

5.7

1.6

1.6

5.9812.0530.510.74

H6165O

871

179234621127638028.154.317.7

100.065.9

0.8

7.9

21.368.7

2.1

100.00.1

0.3

0.4

1.6

0.3

0.4

7.7

1.6

0.9

7.9215.1429.650.73

H6165H+O871

169477144462079

18600291.1

7.8

1.1

100.07.9

1.0

7.1

19.671.3

2.0

100.00.1

0.3

0.4

1.3

0.3

0.4

6.8

1.6

1.2

7.0513.7630.040.74

Sample-IDGas fractionDepth (m)CompoundCncC1CncC2C4CncC5C9CncC1C9PctC1PctC2C4PctC5C9PctC1C9WetnessRatiC4nC4PctnC7PctlsoC7PdCycC7PdAroC7PctSumC7Thompson_AThompson_BThompson_XThompson_CThompsonJThompson_FThompsonJHThompson_RThompsonJJMango_P1Mango_P2Mango_N2Mango_K1

H6166H

901

187692826

460

2205485.112.8

2.1

100.013.1

1.2

5.7

17.575.1

1.7

100.00.1

0.3

0.4

0.8

0.2

0.2

5.3

1.4

1.8

5.6812.1429.210.76

H6166O

901

687

25791979524513.149.237.7

100.079.0

0.7

8.5

22.168.1

1.3

100.00.1

0.2

0.3

1.4

0.3

0.4

8.2

1.6

0.9

8.5416.0627.720.74

H6166H+O901

1945554052439

2730071.319.8

8.9

100.021.7

0.8

8.1

21.469.2

1.4

100.00.1

0.2

0.3

1.3

0.3

0.4

7.7

1.6

1.0

8.0715.4227.96

0.74

H6167H

931

605

201

141

947

63.921.214.9

100.024.9

1.2

7.9

19.071.6

1.6

100.00.1

0.2

0.4

0.9

0.3

0.3

7.51.7

1.0

7.8513.6927.67

0.78

H6167O

931

756

471

1141236831.919.948.2

100.038.4

0.5

12.319.965.3

2.5

100.00.1

0.2

0.4

1.3

0.3

0.6

12.12.4

0.7

12.3215.2625.90

0.68

H6167H+O931

1361672

1281331441.120.338.7

100.033.0

0.7

11.919.965.8

2.4

100.00.1

0.2

0.4

1.3

0.3

0.5

11.72.4

0.7

11.9415.1326.050.69

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