Geoscience Reference
In-Depth Information
Table 3-22. Statistics of data set used to evaluate reservoir oil viscosity correlation equations
for reservoir pressures equal to bubblepoint pressures (338 lines of data from 338 reservoir fluid
studies with worldwide origins)
Laboratory measurement
Minimum
Median
Mean
Maximum
Bubblepoint pressure, p b , psia
120.7
1,839.7
1,993.9
5,311.7
Reservoir temperature, T R , ºF
107.0
205.0
208.3
320.0
Stock-tank oil gravity, API , ºAPI
15.8
34.0
33.3
57.7
Separator gas specific gravity, γ gSP
0.6000
0.8297
0.8584
1.3033
Solution gas-oil ratio at p b , R sb , scf/STB
12.0
430.0
511.1
1,716.0
Reservoir oil density, ρ oR , lb/cu ft
34.27
45.1
45.46
57.32
Reservoir oil viscosity, μ ob , cp
0.12
0.632
4.71
149.30
Table 3-23. Evaluation of published reservoir oil viscosity correlation equations at bubblepoint
pressures reveals the most reliable correlation.
Predicted saturated oil viscosity
ARE, % AARE, %
Beggs-Robinson (1975) -11.24 27.49
Dindoruk-Christman (2004) a * -9.36 30.22
Hanafy et al. (SPE 37439, 1997)* -4.63 30.91
Ng-Egbogah (1983) b with Beggs-Robinson (1975) 1.34 30.95
Almehaideb (1997) c * -4.63 31.05
Petrosky-Farshad (1995)* 2.86 31.25
Elsharkawy-Gharbi (1999) d -7.43 31.63
Abu-Khamsin-Al-Marhoun (1991)* 2.17 32.80
Al-Khafaji et al. (1987) e -10.58 33.10
Bergman (1992) f 11.93 35.39
Kartoatmodjo-Schmidt (1994) -10.51 36.39
Elsharkawy-Alikhan (1999) g * 18.27 38.69
Bergman-Sutton (2007) h 21.50 40.41
Standing (1977) -14.63 46.65
Aziz et al. (1972) i -47.78 50.50
Naseri et al. (2005) j * -60.94 67.22
Khan et al. (1987) k * 45.51 69.02
Labedi (1992) l 110.4 142.80
a Dindoruk, B. and Christman, P.G. “PVT Properties and Viscosity Correlations for Gulf of Mexico Oils.” Society of Petroleum Engineers
Reservoir Evaluation and Engineering . Vol. 7, No. 6 (2004) 427-437. b Ng, J.T.H. and Egbogah, E.O. “An Improved Temperature-Viscosity
Correlation for Crude Oil Systems.” Paper 83-34-3. Presented at Petroleum Society of CIM 34th Annual Technical Meeting, Banff (1983).
c Almehaideb, R.A. “Improved PVT Correlations for UAE Crude Oils.” Paper SPE 37691. Presented at the SPE Middle East Oil Conference and
Exhibition, Bahrain (1997). d Elsharkawy, A.M. and Gharbi, R.B.C. “Comparing Classical and Neural Regression Techniques in Modeling
Crude Oil Viscosity.” Advances in Engineering Software and Workstations . Vol. 32 (2001) 215-224. e Al-Khafaji, A.H., Abdul-Majeed, G.H.,
and Hassoon, S.F. “Viscosity Correlation for Dead, Live, and Undersaturated Crude Oils.” Journal of Petroleum and Gas Exploration Research .
Vol. 6, No. 2 (1987) 1-6. f Whitson, C.H. and Brule, M.R. Phase Behavior . Richardson, TX: SPE (2000) 35-37. g Elsharkawy, A.M. and
Alikhan, A.A. “Models for Predicting the Viscosity of Middle East Crude Oil.” Fuel . Vol. 78 (1999) 891-903. h Bergman, D.F. and Sutton, R.P.
“An Update to Viscosity Correlations for Gas-Saturated Crude Oils.” Paper SPE 110195. Presented at the SPE Annual Technical Conference
and Exhibition, Anaheim (2007); and Whitson, C.H. and Brule, M.R., 2000. i Aziz, K., Govier, G.W., and Forarasi, M. “Pressure Drop in Wells
Producing Oil and Gas.” Journal of Canadian Petroleum Technology . Vol. 11 (1972) 38-42. j Naseri, A., Nikazar, M., and Mousavi Dehghani,
S.A. “A Correlation Approach for Prediction of Crude Oil Viscosities.” Journal of Petroleum Science and Engineering (2005) 163-174.
k Khan, S.A., Al-Marhoun, M.A., Duffuaa, S.O., and Abu-Khamsin, S.A. “Viscosity for Saudi-Arabian Crude Oils.” Paper SPE 15720. Presented
at the Fifth Middle East Oil Show, Manama, Bahrain (1987). l Labedi, R. “Improved Correlations for Predicting the Viscosity of Light Crudes.”
Journal of Petroleum Science and Engineering . Vol. 8 (1992) 221-234. * Author restricted correlation to a specific geographical area.
Correlation
Search WWH ::




Custom Search