elf aquitaine production

EP/P/EXP/GDP95-033 RP

Pau, October 1995

NorwayWELL 1/3-7

Reservoir geochemical studyof the Forties Fm

(Cores and DST 1A)

•ft0 8 NOV. 1995

REGISTRERTOLJEDIREKTORATET

Exploration

Departement Genése et Dynamique Petroliere K. LE TRAN

adresse postale : O tour Elf - Cedex 45 92078 Paris La DefenseO Pau - 64018 Pau CedexD Lacq - bp 22 64170 LacqD Boussens - 31360 Boussens

telephone : - 33 - (1) 47 44 45 46-33-59 83 40 00-33-59 92 22 22-33-61 97 80 00

telex: elfa 615400Fpetra 560804Fpetta 560053Fsnea 530385F

Imp. 8312 A EAP - RGM 953 006 006

eif aquitaine production [?]

L

-EP/P/EXP/GDP 95-033RP—I

REF.Nr

B74658B74659B74660B74661B74662B74663B74664B74665B74666B74667B74668B74669B74670B74671B74672

Formula

K4K4K4K4K4K4K4K4K4K4K4K4K4K4K4

COREDEPTH

m3226.103226.723227.223227.883228.803229.403229.913230.553231.053231.663232.303232.853233.873234.883236.12

Well 1/3-7 - Geochemical assessment <

TOC-TOC

%0.270.280.160.150.160.210.150.150.320.220.080.060.070.030.04

ROCK EVALS1

1.641.920.330.750.040.800.660.471.540.230.080.020.030.000.00

used for calculation of

S2 !

0.580.530.160.220.080.360.280.280.680.240.080.040.100.050.07

>1+S5

2.222.450.490.976.121.160.940.752.220.470.160.060.130.050.07

PI

0.740.780.670.770.330.690.700.630.690.49#####

EXTRACTEOMppm3270369012201980580

247021102070440011204202801S0120110

Hydrocarbon SaturationBased on Rock Eval: SHre = (S1+S2)*Rhob/(RhoH*ø*Based on Rock Extract: SHeom == EOM

Yield%

121.0131.976.4

131.735.9

117.5140.4138.3137.750.952.346.526.338.327.8(aftei

10) where Rhob = (ø*

ANALYSISSAT%73.473.360.767.717.863.964.556.358.947.647.738.429.527.725.7J.H.

AROn

%18.818.321.419.324.121.321.225.927.528.623.823.221.622.824.3

POL%7.88.4

17.913.058.014.814.417.713.623.828.438.449.049.450.0

Augustson,

Of

S/A

3.94.02.83.50.73.03.12.22.11.72.01.71.41.21.1

1991RhoH)+((100-ø)*RhoR)

(%)*(RhoW/RhoH+(RhoR/RhoH)*(1OO-0)/0)Phi and RhoR are from Geco Prakla petrophysical measurementsRhoH = density of reservoir fluid (estimated to 0.78)RhoW = density of pore water (estimated to 1.03)

HC

3.013.381.001.720.242.101.801.713.810.850.300.170.090.060.06

COREK

mD17.9023.30

0.6936.20

0.091.681.900.23

10.700.140.490.580.11

4.58

core extracts

ANALYSISPhi%21.921.819.624.812.722.119.915.121.813.917.118.211.923.423.0

RhoRg/cm3

2.652.652.662.652.682.662.652.672.652.672.662.662.662.662.65

HC SATURATSHre

%2.913.230.731.100.301.511.381.522.931.040.280.100.340.060.09

>Heom%4.394.981.872.301.453.303.164.265.942.520.750.470.480.150.14

eiff aquitaine production at Tab.2

Weil 1/3-7Geochemical characterization of DST1A

Well 1/3-7SampleDepth top (m RKB)Depth bottom (m RKB)

Bulk properties of w?API gravity% Sulphur% Residue of distillation

% Distillate%"C15+" Saturated HC% "C15+" Aromatic HC% Resins% Asphaltenes

% "C15+" Saturated HC%"C15+" Aromatic HC% Resins% AsphaltenesSaturates/Aromatics% Hydrocarbons% n-alcanes (in saturates'CPIjC20toC30)

nC6/MCPnC7/DMCPnC7/Toluene

Pr/PhPr/nC17(A)Ph/nC18 (B)A/B

Whole oilTopped oilC15+saturatesC15+aromaticsGas qross compositi.%C1%C2%C3%iC4% nC4% iC5% nC5% CO2%N2% H2SC1/C1-C4C1/C1+C3iC4/nC4

CondensateDST1A

3183.53215.5

44.280.05253.68

46.3239.5512.21

1.920.00

73.6822.74

3.580.003.24

96.4220.35

1.01

2.999.061.44

1.440.370.291.28

-28.4-28.5-28.9-28.0

72A712.85

7.351.202.210.400.301.691.84

nd0.753.570.54

Carbon isotope of irNo

123456789

101112131415161718192021222324252627282930313233343536

ComponentsiC4nC4iC5nC5CYPent2,3DMBut2MPent3MPentnC6MCPBzCH2MHex3MHex1,3trDMCyPent1,3 ciDMCyPent1,2trDMCyPentnC7MCHToli2MHept3MHep_t1tr2DMCHexnC8n-PrCyPent1-cis-2DMCyHex1,1,3 TMCyHexEtBzp+m-Xyl2MOct3MOcto-XylnC9TeBuCyPentSeBuCyPentn-PrCyHex

Gas isotope compoC1C2C3iC4nC4iC5nC5CO2

^dividualDelta C

-26.28-28.73-27.42

-27.59-29.88-28.24-27.38-30.45-28.25-29.26-29.56

-32.01-29.08-27.21-29.48

-29.18-29.88-28.93-27.35

-28.95-29.82-29.29-30.53-28.98

-47.1-27.2-25.4-30.7-26.9-30.8-29.8

na

mmNo373839404142434445464748495051525354555657585960616263646566676869707172

8H

8O

Components2MNono-EtTol3,6DMOctIPC10nC104MC10IPC11nC114MC11IPC12nC12IPC13IPC14nC13IPC15nC14IPC16nC15nC16IPC18nC17Pristane(Pr)nC18PhytanejPhLnC19nC20nC21nC22nC23nC24nC25nC26nC27nC28nC29nC30

C1

CO2

Delta C

-29.14-28.86

-28.86-29.26

-29.52-29.16-28.98-29.53-29.49-30.11-29.37-29.78-30.11

-30.20-31.18-30.53

-30.32-30.58-30.48

na

na

— — EP/P/EXP/GDP/95-033 R P -

eif aquitaine production [J]

-EP/P/EXP/GDP 95-033RPJ

Counter1/8-7

MmUflarttoa BV9ST U318S.S0 3815.00(Lab. R«f. B75412)

ape. gra. 15Cd APISulphur (X)

.805844.28

0.0d13C HTd13CRDd13C SATd13C ARO

-28.4-28.5-28.S-28.0

DMMotoHC SAT [C14+]HC ARO [C14+]ResinsAtphottonM

46.3238.5512.211.920.00

(%HT)(%HT) .(XHT)(XHT)(XHT)

73.8822.743.580.00

(XR0)(XRD)(XRD)(XRD)

SAT/ARO 3.24

IIMTERPROATION Bkxtogradatlon: Unnoticed - Washing: UnnoUcod - Maturity Eq VRo X: 0.5/0.7 - Souro* Rock Probable of Aga J

J J j j j L U ' • • • •TOTAL Oft. (ID-B7541)

o

6

7

Pr/nC17 .37Ph/nC18 .20Pr/Ph 1.44A/B 1.28CPI 20-30 1.01nC(X) 20.35

XL.

SULFUR COMPOUNDS (FP-B7541)

SATURATED HC (ST-B7541) GC/MS carriwl out AROMATIC HC (F1-B7541)

2SOa

S

>3

CHROMATOGRAMME "HUILE TOTALE" / CHROMATOGRAM "TOTAL OIL"

14M -

116.0 -

*> 87.0 -

11

1o

i

L

58.0 -

29.0 -

HTDST 1A

ISO.

3183.50 3216.50

200.MnutM

(tab. R*. B7S412)

CHROMATOGRÅMME "HC SATURES" / CHROMATOGRAM "SATURATED HC"

•2.0 -

35.0 -

28.0 -

•a

m•p

I

30

5"

21.0 -

14.0 -

0.

«NO 1/3-7

100. 125.

3183.50 3215.50Minute*

(Lab. Ref. B75412)

>

3•CO

10.0 -

9.0 -

120.

)(E

nlor

ged

x

s 1

7.0 -

iID u

EP

/P/E

XP

/(

CHROMATOGRAMME

li *"

u

3

e

it 1 1

i1a.

IlhuT3 0. 25. 50.

| «NO 1/3-7r-o

"HC AROMATIQUES" / CHR0MAT0GRAM "AROMATIC HC"

75. 100. 125. 150.Minutes

HT DST IA 3183.50 3215.50 (Lab. Ref. B75412)

11s3pro

du

< ;tion [̂

Ann.4

(D

CHROMATOGRAMME "COMPOSES SOUFRES" / CHROMATOGRAM "SULFUR COMPOUNDS"

8.5 -

1ia

s3DT3

(D

aSa.o

©NO 1/3-7

75.

HT DST 1A

too. 125.

3183.50 3215.50

150.Mlnutw

(Lob. Raf. B75412)

>

•

Ul

eif aquitaine production Ann. 6

PROGRAMME POST-ANALYSE: GC-SATF i chief. ST B75412NODI échantiTlon: 1/3-7 Hn°03529PDate injection: 21-08-95 å 20 heures

II manque leSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceSurfaceIt manque leII manque le

Pr/nC17Ph/nC18pr/phA/Bph1/ph2pr2/ph2pr1/pr2pr2/nd7ph2/nC18CPI. 14-34CPI. 14-24CPI. 22-34CPI. 20-30

nC10IPC11nC11nC12IPC13IPC14nC13IPC15nC14IPC16nC15nC16IPC18nC17Pr1PrnC18PhiPhIPC21nC19nC20nC21nC22nC23STD 0*nC24nC25nC26nC27nC28nC29nC30nC31nC32nC33nC34nC35nC36nC37nC38nC39nC40nC41nC42nC43nC44nC45

==

==

==r

x

1111

.37

.29

.44

.28

.02

.451.00.18.14

1.00111

.00

.01

.01

545.6204.

74501.19242.24384.174427.43672.233786.98943.239422.233206.25907.218302.39872.39899.194160.27927.27423.1573.

167588.155208.134248.121435.105621.130055.96303.79770.69864.58327.47735.46234.32254.30791.25616.20734.25933.15278.11433.6999.6388.5073.3698.2806.1414.1400.

% n-aIcanes dans saturés = 20.35

< 1) .(41) >( 2) +>( 3) + >(42) +--->(43) +---->( 4) + >(44) + >( 5) + >(45) • >( 6) + >( 7) • >(46) + >( 8) + >(37) + >(38) + >( 9) + >(39) + >(40) + >(47) >(10) + >(11) + >(12) + >(13) + >(14) + >(48) + >(15) + >(16) + >(17) +—- >(18) + >(19) + >(20) • >(21) + >(22) + >(23) + >(24) +—>(25) +---->(26) +-->(27) +->(28) +>(29) +>(30) +>(31) +>(32) +>(33) >(34) >(35) .(36) .

NB: STD_D* = étalon interne

-EP/P/EXP/GDP/95-033RP—I

I6

L

Ion 191.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A;3183.5;32155;M100% =765100n

70 80 90 100 110 120

Ion 205.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A;31835;3215.5;M100% = 1752100^

go:

80

70 :

60:

50-

40

20 :H^^mmnny^^mnm^y u t&^t^m^Mmwv*»**********1

" i I ' I ' I i i i \ ""t I"'60 70 80 go 100 110 120

Ion 123.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DSTi A^183532155;M100% =6352

go

80:

70:

50:

40

30^

10:

1 I | 1 t 1 1 | 1 t 1 1 | 1 1 1 1 t 1 1 1 1 | 1 1 1 t ( 1 1 1 1 | 1

60 70 80 90 100 110 120

Ion 177.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DSTiA31835^2155;M100% = 1580

90 q

80

70:

60:

40 :

30 :

20 i

10̂

l»HHkW»##>

" t k | l i i i | i i i i | I t i I | i i ^ 1 i i I I i | i k 1 t i i i60 70 80 90 100 110 120

Saa8ID

|

5'

Bl

>3

EP

/P/E

X

I

i

lon 21100%100:

90:

80:

70:

40:

30:

205

10:

0^

7.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A;31835;3215.5;M= 467

50 60 70 80 90 100

lon 218.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A;31835;3215.5;M100% =963100n

90:

80:

70:

60:

50:

40:

30 :

20:

10:

0 -

II 111

i i i i i i i | l l i i | i i i l | i i i i | l l l i i i i

50 60 70 80 90 100

lon 25100%

: ]80:

70:

60:

50:40:

30:

20^

10:

oi

9.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A^1835^2155;M= 334

50 60 70 80 90 100

lon 2:100%100:

90^

80^

70:

60:

505

405

305

205

105

0-

(1.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DSTiA^1835^2155;M= 332

1 i 1 i i i t 1 i f i i 1 i i i i 1 i i i i 1 i i i i 1 V i

50 60 70 80 90 100

f aauitaine production

\Q}\_

Ann. 8

m

oo

i

Ion 183.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DSTiA31835;32155;M100% = 14675

100-1

140 160

TIC of B75412STM2.d SUBTRACTED; B75412;ST;NO;1/3-7;HT;DST1A^183532155;M100% = 488167

100-j

Ion 85.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1A3183532155;M100% =359552

100-

90 :

80:

70^

60

40

30:

20 :

10:

0

o0)

a

D3aI1"

JiéljLJ*.,U..l4.U.U..M.«. 1.1.1.120 40 60 80 100 120 140 160

Ion 83.00 amu from B75412STM2.d; B75412;ST;NO;1/3-7;HT;DST1 A;31835;32155;M100% = 119064

100-

80

70^

60

50

40

30

20-

10

020 40 60 80 100 120 140 160

>

pto

elf aquitaine production Ann. 10

GC/MS Analysis of Saturated Hydrocarbons: Molecular Ratios.

DT LABUX B75412 (Marie 4225 set 95/233)

1/3-7 (NO) DST 1A 3 183,50 - 3 215,50 (m). Submitted by LE TRAN.Geochemical study.

Short chain steranes

C21 / C22:C22-4-m / C22:

C27 steranes

aaS / aaR:PPR / aaR:PPS / aaR%pp:% 20S:

— — — — — — — — — — — — a i s i a i n

LJoht / heavy steranes

(C21+C22)/(C29aaR+S):

C29 steranes

aaS / aaR:PpR / aaR:PPS / aaR:

%pp:% 20S:

0.570.730.69

47.39 %42.11 %

•o —————————————

% |3j3 steranes

C27pp: 39.1 %C28PP: 27.3 %

C29Pp: 33.6 %

Diasteranes

C27SDia/C27aaR:

C27SDia / C29oaR: 2.22

Total intearations:

mJz232: 70.7%m/z 218: 22.8 %

m/z 259: 6.6 %

Terpanes

Tricvclic terpanes:

C23:3 / C24:4 :

C23:3 / C29aP:C30:3 / C29ap:

<Erre

0.000.00

flg hopanes:

C30pa/C30ap: 0.21

18cUH) Hooanes:

Ts / Tm:C29:5 / C29aP:

1.000.53

a/3 Hopanes:

C29aP / C30ap: 0.51C28aP / C29aP: 0.00C28ap / (Ts+Tm): 0.00

C31-C3S hopanes:

%22SC31: 57.5%

% 22S C32: 60.4 %

% 22S C33: 60.4 %

% 22S C34: 62.1 %

% 22S C35: 49.1 %

C31/ (C31+C32): 0.55

C33/C35: 1.42

C35 / (C29+C30): 0.24

Methvlhopanes

(C30 / C 31) 2a mH: =Erre

(3B/2a)C30mH:

2a mHop / Hop:

Hexacvclics:

C32:6/C29aaR:C32:6/C35aB

0.000.00

0.00

8.14 Secohopanes:

C29-C30 /(C29+C30ab):

0.73

25-Norhopanes

TNH/BNH: <ErreurTNH / (Ts+Tm): 0.00nor C29 / C29 ap: 0.00

Other terpanes:

GCRN / C30aP:"X"/C30aP:OLN / C30ap:

BNH / C29ap:

0.000.250.00

0.00

Total integration:

Residual m/z 191: -19.1 %

r n & branched alkanes —

Pr/Ph:Pr/nCi7:Ph/nCi8:A / B :CPI2:CPU :n / (n+iso) alkanes : QJQ

I Other

C23:3/C2iSt:

(27-30H)/ 29St:

m/z WVm/z 217

Tri / Pentacyclics

C32PCW C32Æ:

ratios

0.00

3.85

0.27

: 0.00<Erreu

-Quantitative Analysis—

ppm/ ppm /sat EOM-TO

HopanesC29HTricyclics

C29oaRn-alkanes

-Comments-

-EP/P/EXP/GDP/95-O33RP—