Abstract
The gas-oil ratio (GOR) of crude oil has a tremendous impact on the processes used for oil production from subsurface formations. Determination of GOR thus becomes of central importance to oil operating companies. Here, it is shown that near-infrared (NIR) spectral measurements on single-phase crude oils (with dissolved gas) can be used to obtain a reliable estimate of the GOR. A simple theoretical formulation accurately accounts for the data. Furthermore, the NIR measurement is shown to be compatible with process flow streams at elevated temperatures and pressures.
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References
1.
McCain
W. D.
, The Properties of Petroleum Fluids (Penwell Publishing Company , Tulsa, Oklahoma , 1989 ).
2.
Crombie
A.
Halford
F.
Hashem
M. N.
McNeil
R. I.
Thomas
E. C.
Melbourne
G.
and
Mullins
O. C
, Oilfield Rev. , Autumn (1998 ).
3.
Brown
C. W.
and
Lo
S.-C
, Appl. Spectrosc. , 47 , 812 (1993 ).
4.
Donahue
S. M.
Brown
C. W.
Caputo
B.
and
Modell
M. D
, Anal. Chem. 60 , 1873 (1988 ).
5.
Rest
A. J.
Warren
R.
and
Murray
S. C
, Appl. Spectrosc. 50 , 517 (1996 ).
6.
Brown
C. W.
Mangal
A.
and
Barnett
S. M
, Appl. Spectrosc. 52 , 746 (1998 ).
7.
Cooper
J. B.
Wise
K. L.
Welch
W. T.
Sumner
M. B.
Wilt
B. K.
and
Bledsoe
R. R
, Appl. Spectrosc. 51 , 11 (1997 ).
8.
Mullins
O. C.
, US Patent Number 5,939,717 (1999 ).
9.
Mullins
O. C.
Joshi
N. B.
Groenzin
H.
Daigle
T.
Crowell
C.
Joseph
M. T.
and
Jamaluddin
A
, Appl. Spectrosc. 54 , 624 (2000 ).
10.
Joseph
M. T.
and
Jamaluddin
A
, Oilphase Labs , private communication .