Gas Gradient

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WellHeadP

Page 1

Wellbore Static Pressure Gradient for Dry Gas

Enter values only in green shaded cells

Description:

Dry gas pressure gradient spreadsheet test case

Composition

Nitrogen Well Vertical Depth 9800 ft

ethane !"000

#$% 99"000 &otto' (ole Pressure )000 psia

Ethane

(%S &otto' (ole *e'perature %)% +,

Propane

i-&utane Surface *e'perature .0 +,

n-&utane

i-Pentane Temperature Gradiant 1.959 +,/!00 ft

n-Pentane

(eanes Hydrostatic Bottom Hole 4243.4 psia

#12 Water Gradient @ 0.433 psi/ft

Total: 100.000Z- Factor at Bottom Hole #VALUE!

#12 ole Wt 110 Default

#12 Density 0.740 Default

(gm/ #alculated Static

Gas Gravity 333 Well (ead Pressure 3V456E7 psia

3V456E7 bara

(all-arborough : ,actor;

Copyright © Amoco Corporation 1997

Ve"$o% &ul' 97



WellHeadP

Page 2

297. 'eter

344. bara

122.22222 +#

15.55555) +#

#VALUE! g'/cc



Pressure vs Depth

Page 3

Wellbore Static Pressure Gradient for Dry Gas

Enter values only in green shaded cellsDescription:

Dry gas pressure gradient spreadsheet test case

ept tep< t )00

(all-arborough : ,actor;

Copyright © Amoco Corporation 1997

=esults vs DepthStatic

Depth *e'p" Pressure : ,actor Density Delta P Gradient

ft +, psia lb/ft> psi psi/ft

9800 %)% )000 3V456E7 3V456E7 3V456E7

9)00 %?. 3V456E7 3V456E7 3V456E7 3V456E7 3V456E79000 %>. 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

8)00 %%1 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

8000 %!1 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

1)00 %01 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

1000 !91 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

.)00 !81 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

.000 !18 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

))00 !.8 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

)000 !)8 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

?)00 !?8 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

?000 !>8 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

>)00 !%9 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

>000 !!9 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

%)00 !09 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

%000 99 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

!)00 89 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

!000 80 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

)00 10 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7

0 .0 3V456E7 3V456E7 3V456E7 3V456E7 3V456E7



Pressure vs Depth

Page 4



Pressure vs Depth

Page 5



Pressure vs Depth

Page 6



Pressure vs Depth

Page 7



Pressure vs Depth

Page 8



WorkSpace

Page 9

Feed: Output from >>>>>>>Recombination at Correct Field CGR of 12

Two phase flash at -3.000 C and 32.000 bar

ComponenFeed Liquid Vapor K value

Nitrogen 0.8012 0.0541 0.81731.51E+01 0.8012

Methane 89.9711 15.4533 91.57355.93E+00 89.9711

Carbon dio 1.3945 0.9876 1.40321.42E+00 1.3945

0

Ethane 4.6966 5.8368 4.672 8.01E-01 4.6966

Propane 1.0496 4.5021 0.9754 2.17E-01 1.0496

i-Butane 0.1923 1.7869 0.158 8.84E-02 0.1923

n-Butane 0.3034 3.8426 0.2273 5.91E-02 0.3034

i-Pentane 0.1076 2.4595 0.057 2.32E-02 0.1076

n-Pentane 0.1204 3.187 0.0545 1.71E-02 0.1204

Hexanes 0.157 5.8111 0.0355 6.10E-03 0.157

C7-C10 0.8013 36.844 0.0262 7.12E-04 1.2062

C11-C15 0.3002 14.2594 0.0001 5.10E-06

C16-C21 0.0847 4.0254 0 2.59E-08

C22+ 0.02 0.9502 0 8.34E-11

Total 100.0000 100.0000 100.0000

Mole percent 2.1051 97.8949

Volume percent 0.4599 99.5401

Z factor 0.8804 0.1924 0.8952

P/Z, bar 35.7470

Gas volume factor, cu m/scm 0.0266

Molar volume, cc/g mol 617.9569 135.0154 628.3420

Density, kg/cu m 31.3970 718.2522 28.2232

Molecular weight 19.4020 96.9752 17.7339

Gas gravity, Air=1.0 0.6123

Pseudocritical temperature, K 206.2758 491.8884 200.1340

Pseudocritical pressure, kPa 4601.7428 3281.6882 4630.1290

Pseudocritical volume, cc/g mol 109.6202 399.6033 103.3845

Viscosity (Thodos), mPa s 0.4999 0.0106

Heavy ends specific gravity 0.7832 0.7835 0.7636

Heavy ends molecular weight 138.3896 139.0043 110.2242

Heavy ends are components with MW > 88.0

Peng-Robinson used for Phase equilibria

Peneloux volume shift parameter set used for EOS parameters

Peng-Robinson used for Gas Z factor

Peng-Robinson used for Liquid density



GasProp Info

Page 10

#o'positional Gas Properties SpreadsheetProprietary; Copyright Amoco Corporation 1995

Spreadsheet Description

*o" mo"e $%fo"mat$o% o" a$ta%e+ o%tat:

Da,e *. -e"gma%+ Amoo ETTula+ oo% 42232

a%' . o""$+ Amoo ETTula+ oo% 42237)

Spreadsheet Functions

ellea$a(Tem6Deg*+ "e$a+ u"Tem6*+ TotVD+ 8om6o$t$o%+ 876luolt+ 876luDe%m8

alulate 6"eu"e a%ge a 'ou mo,e u6 a "' ga ell u%e" %o%flo$%g o%$t$o%.

all;a"<a=( Tem6Deg*+ "e$a+ 8om6o$t$o%+ 876luolt+ 876luDe%m8

alulate ga = fato" at atual T a% u$%g all;a"<o"oug e>uat$o% f$t to ge%e"al$?e = a"t

TooaV$( Tem6Deg*+ "e$a+ 8om6o$t$o%+ 876luolt+ 876luDe%m88+ a=

alulate ga ,$o$t' $% e%t$6o$e u$%g Too o""elat$o% a% $%6ut = fato"

a*V*( Tem6Deg*+ "e$a+ a= alulate ga fo"mat$o% ,olume fato" $% <<l/f u$%g $%6ut = fato"

a"a,$t'(8om6o$t$o%+ 876luolt

aluate ga g"a,$t'(mole e$gt f"om $%6ut om6o$t$o%

Other n!o

Spreadsheet "odi!ications

Ve"$o%: 1.0 Date: 95/11/29 -': . L. -a"%a"

De"$6t$o%: o"$g$%al ae om6o$t$o%al a6a<$l$t' to A@ 6"eaeet

Ve"$o% 1.1 Date 97/01/2 -' -e"gma% a% o""$

o$f$e fo"matt$%g of alulat$o% to $e ,alue at %egat$,e e6t.

Et$mate ga = fato"+ ,$o$t'+ a% ,olume fato" fo" g$,e% ga om6o$t$o% ($%lu$%g 87 mole t. a%e%$t' a% o%$t$o% a"e B%o%. e6lae Te%$al 8om6ut$%g A@C 6"og"am.

Does not detect dew points or guarantee that the fluid is actually single-phase gas.

Te fu%t$o% $6la' a meage <o a% "etu"% a% Eel e""o" ,alue (e.g. #VALUE! $f te $%6ut ,alue a"e %ot%ume"$+ te om6o$t$o% $ %ot a66"o6"$ate+ o" ote" e""o" ou".

F% te A@C 6"og"am o% T8+ "$t$al 6"o6e"t$e e"e $%6ut fo" ea,' e% f"at$o%+ a% mult$6le f"at$o%oul <e 6e$f$e.

F% t$ 6"eaeet+ "$t$al 6"o6e"t$e a"e et$mate $%te"%all' u$%g te $%6ut 87 6"o6e"t$eG o%l' o%e 87

f"at$o% a% <e 6e$f$e.

o$f$e: Ae %e fu%t$o% tat alulate 6"eu"e g"a$e%t f"om ga e%$t' alulate u$%g ? .fato"

Documents

Gas Gradient