gas oil ratio

7/23/2019 gas oil ratio

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FORMATION GAS-OIL

RATIO

VIETNAM OIL AND GAS GROUP

PETROVIETNAM UNIVERSITY

Lecturer: Nguyen Viet KhoiNguyenGroup: 3

Ba Ria, 2015



Four classifications :

Liberated gas

Produced gas

Recycled gas

Contamination gas

Group 3 Formation Evaluation

Introduction



The efficient use of gas detection data can

indicate:

- Abnormal pressure detection

- Mud gas data

- Specific physical characteristic of hydrocarbons

-

Intervals of hydrocarbon potential


Introduction




Liberated Recyc!ed Ga"




#artia! Liberation




#enetration Rate


http://slidepdf.com/reader/full/gas-oil-ratio 7/19Group 3 Formation Evaluation

#roduced Ga"



$onnection Ga"



%rip Ga"



• & 'ea"ure o( the proportion o(hea)y a!*ane" pre"ent in the tota!ga" "a'p!e

• +h i!! increa"e a" thehydrocarbon gra)ity increa"e" (ro'!ight dry ga" to re"idua! oi!


-ydrocarbon +etne"" .+ h/



-ydrocarbon +etne"" .+ h/



I-ydrocarbon +etne"" .+ h/



&" the hydrocarbon gra)ityincrea"e" (ro' !ight ga" to re"idua! oi!the ba!ance ratio (a!!"

+ h and B h ha)e an in)er"ere!ation"hip and hen p!otted on the

"a'e "ca!e can (urther i'pro)ee)a!uation


-ydrocarbon Ba!ance



-ydrocarbon Ba!ance



-ydrocarbon Ba!ance

Wetness

Ration

Balance

ratio

Likely Hydrocarbon

type

one !Fi" #-

$%

W& ' ()* Bh 1000Light dry ga", un!i*e!y

to be producti)e&

()*' W& '$+)* +h 4 Bh 41000

#roducti)e ga" B

()*' W& '$+)* Bh 4 +h

#roducti)e ga"

conden"ate or high

gra)ity, high GR oi!

$

$+)*' W& ',( B

h 4 +

h #roducti)e oi! 6

$+)*' W& ',( Bh 44 +h

Nonproducti)e

re"idua! oi!7



&pp!y hen con"idering ga"conden"ate or high ga"8oi! ratio .GR/oi!, !itt!e di"tinction

i" apparent


-ydrocarbon $haracter





Wetness Balance &aracterHydrocarb

onone

()* ' W& '

$+)*Bh 4 +h 05 4 $h

Ga"

conden"ate$

()* ' W& '

$+)*

Bh 4 +h 05 $h -igh GR oi! $



THAN. /O01


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