Wettability Alteration in High-Temperature and High-Salinity Carbonate Reservoirs
- Gaurav Sharma (Baker Hughes) | Kishore Mohanty (University of Texas at Austin)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- April 2013
- Document Type
- Journal Paper
- 646 - 655
- 2013. Society of Petroleum Engineers
- 5.8.7 Carbonate Reservoir, 5.3 Reservoir Fluid Dynamics
- 7 in the last 30 days
- 1,055 since 2007
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The goal of this work was to change the wettability of a carbonate rock from mixed-wet toward water-wet at high temperature and high salinity. Three types of surfactants in dilute concentrations (< 0.2 wt%) were used. Initial surfactant screening was performed on the basis of aqueous stability at these harsh conditions. Contact-angle experiments on aged calcite plates were conducted to narrow the list of surfactants, and spontaneous-imbibition experiments were conducted on field cores for promising surfactants. Secondary waterflooding was carried out in cores with and without the wettability-altering surfactants. It was observed that most but not all surfactants were aqueous-unstable by themselves at these harsh conditions. Dual-surfactant systems, mixtures of a nonionic and a cationic surfactant, increased the aqueous stability. Some of the dual-surfactant systems proved effective for wettability alteration and could recover could recover 70 to 80% OOIP (original oil in place) during spontaneous imbibition. Secondary waterflooding with the wettability-altering surfactant increased the oil recovery over the waterflooding without the surfactants (from 29 to 40% of OOIP).
|File Size||1 MB||Number of Pages||10|
Adibhatla, B. and Mohanty, K.K. 2008. Oil Recovery from Fractured Carbonatesby Surfactant-Aided Gravity Drainage: Laboratory Experiments and MechanisticSimulations. SPERE 11: 119-130. http://dx.doi.org/10.2118/99773-PA.
Gupta, R. and Mohanty, K.K. 2010. Temperature Effects on Surfactant-AidedImbibition Into Fractured Carbonates. SPE J. 15 (3): 588-597. http://dx.doi.org/10.2118/110204-PA.
Hirasaki, G. and Zhang, D.L. 2004. Surface Chemistry of Oil Recovery fromFractured, Oil-Wet, Carbonate Formation. SPE J. 9 (2):151-162. http://dx.doi.org/10.2118/110204-PA.
Jadhunandan, P. P. and Morrow, N. R. 1995. Effect of Wettability onWaterflood Recovery for Crude-Oil/Brine/Rock Systems. SPE Res Eng 10 (1): 40-46. http://dx.doi.org/10.2118/22597-PA.
Kamath, J., Meyer, R. F., and Nakagawa F. M. 2001. Understanding WaterfloodResidual Oil Saturation of Four Carbonate Rock Types. Paper SPE 71505, Proc. ofSPE ATCE, New Orleans, Louisiana, 30 September-3 October. http://dx.doi.org/10.2118/71505-MS.
Ma, S. and Morrow, N. R. 1993. Similarity of Pore Structure and theSelection of Core Samples for Tests of Scaling. Proc. of the 9thWyoming Enhanced Oil Recovery Symposium, Casper, Wyoming, 12-13 May
Manrique, E.J., Muci, V.E., and Gurfinkel, M.E. 2006. EOR Field Experiencesin Carbonate Reservoirs in the United States," Paper SPE 100063, Proc. ofSPE/DOE on Improved Oil Recovery Symposium, Tulsa, Oklahoma, 22-26 April. http://dx.doi.org/10.2118/100063-MS.
Mattax, C. C. and Kyte, J. R. 1962. Imbibition Oil Recovery from Fractured,Water-Drive Reservoir. SPE J. 2 (2): 177-184. http://dx.doi.org/10.2118/187-PA.
Mohanty, K. K. and Miller, A. E. 1991. Factors Influencing Unsteady RelativePermeability of a Mixed-Wet Reservoir Rock. SPE Form. Eval. 6: 349-358.
Roehl, P.O. and Choquette, P.W. 1985. Carbonate Petroleum Reservoirs,New York, Springer-Verlag.
Salathiel, R. A. 1973. Oil Recovery by Surface Film Drainage inMixed-Wettability Rocks. J. Pet. Technol. 25: 1216-1224. http://dx.doi.org/10.2118/4104-PA.
Schott, H. and Royce, A. E. 1984. Effect of Inorganic Additives on Solutionsof Nonionic Surfactants VI: Further Cloud Point Relations. J. Pharm.Sci. 73 (6): 793-799. http://dx.doi.org/10.1002/jps.2600730622.
Schott, H. 2003. A Linear Relation Between the Cloud Point and the Number ofOxyethylene Units of Water-Soluble Nonionic Surfactants Valid for the EntireRange of Ethoxylation. J. Colloid Interface Sci. 260 (91):219-224. http://dx.doi.org/10.1016/S0021-9797(02)00183-2.
Seethepalli, A., Adibhatla, B., and Mohanty, K.K. 2004. PhysicochemicalInteractions During Surfactant Flooding of Fractured Carbonate Reservoirs.SPE J. 9 (4): 411-418. http://dx.doi.org/10.2118/89423-PA.
Standnes, D.C. and Austad, T. 2000. Wettability Alteration in Chalk: 2.Mechanism for Wettability Alteration From Oil-Wet to Water-Wet UsingSurfactants. J. Pet. Sci. Eng. 28 (3): 123-143. http://dx.doi.org/10.1016/S0920-4105(00)00084-X.
Standnes, D.C. and Austad, T. 2003. Wettability Alteration in Carbonates:Interaction Between Cationic-Surfactant and Carboxylates as a Key Factor inWettability Alteration From Oil-Wet to Water-Wet Conditions. Colloids Surf.A Physicochem. Eng. Asp. 216 (1-3): 243-259. http://dx.doi.org/10.1016/S0927-7757(02)00580-0.
Strand, S., Høgensen, E.J., and Austad, T. 2006. Wettability Alteration ofCarbonates; Effect of Potential Determining Ions (Ca2+,SO42-) and Temperature. Colloids Surf. A Physicochem.Eng. Asp. 275 (1-3): 1-10. http://dx.doi.org/10.1016/j.colsurfa.2005.10.061.
Strand, S., Puntervolt, T., and Austad, T. 2008. Effect of Temperature onEnhanced Oil Recovery from Mixed-Wet Chalk Cores by Spontaneous Imbibition andForced Displacement Using Seawater. Energy Fuels 22 (5):3222-3225. http://dx.doi.org/10.1021/ef800244v.
Xie, X., Weiss, W.W., Tong, Z., et al. 2004. Improved Oil Recovery FromCarbonate Reservoirs by Chemical Stimulation. Paper SPE 89424, Proc. of theSymposium on Improved Oil Recovery, Tulsa, 17-21 April. http://dx.doi.org/10.2118/89424-MS.
Wu, Y., Shuler, P., Blanco, M., et al. 2006. An Experimental Study ofWetting Behavior and Surfactant EOR in Carbonates with Model Components. PaperSPE 99612, Proc. of Symposium on Improved Oil Recovery, Tulsa, 22-26 April. http://dx.doi.org/10.2118/99612-MS.
Yousef, A.A., Al-Saleh S.H., Al-Kaabi, A., et al. 2010. LaboratoryInvestigation of Novel Oil Recovery Method for Carbonate Reservoirs. Paper SPE137634, Canadian Unconventional Resources & International PetroleumConference, Calgary, Canada, 19-21. http://dx.doi.org/10.2118/137634-MS.