Variations in Bounding and Scanning Relative Permeability Curves With Different Carbonate Rock Type
- Moustafa R. Dernaika (Ingrain Incorporated Abu Dhabi) | Mahmoud Ali Basioni (Abu Dhabi Company for Onshore Oil Operations (ADCO)) | Ahmed Mohamed Dawoud (Abu Dhabi Company for Onshore Oil Operations (ADCO)) | Mohammed Zubair Kalam (Abu Dhabi Company for Onshore Oil Operations (ADCO)) | Svein M. Skjæveland (University of Stavanger)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- July 2013
- Document Type
- Journal Paper
- 265 - 280
- 2013. Society of Petroleum Engineers
- 1.1 Well Planning, 5.1.5 Geologic Modeling, 5.8.7 Carbonate Reservoir, 1.6.9 Coring, Fishing
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- 821 since 2007
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Relative permeability curves generally exhibit hysteresis between different saturation cycles. This hysteresis is mainly caused by wettability changes and fluid trapping. Different rock types may experience different hysteresis trends because of variations in pore geometry. Relative permeability curves may also be a function of the saturation height in the reservoir. A detailed laboratory study was performed to investigate relative permeability behavior for a major carbonate hydrocarbon reservoir in the Middle East. Representative core samples covering five reservoir rock types (RRTs) were identified on the basis of whole core and plug X-ray computed tomography (CT), nuclear magnetic resonance (NMR) T2, mercury injection capillary pressure (MICP), porosity, permeability, and thin-section analyses. Primary- drainage (PD) and imbibition water/oil relative permeability (bounding) curves were measured on all the five rock types by the steady-state (SS) technique by use of live fluids at full reservoir conditions with in-situ saturation monitoring (ISSM). Imbibition relative permeability experiments were also conducted on the main RRT samples to assess the relative permeability (scanning) curves in the transition zone (TZ) by varying connate-water saturations. Hysteresis effects were observed between PD and imbibition cycles, and appeared to be influenced by the sample rock type involved (i.e., wettability and pore geometry). Variations in relative permeability within similar and different rock types were described and understood from local heterogeneities present in each individual sample. This was possible from dual-energy (DE) CT scanning and high-resolution imaging. Different imbibition trends from both oil and water phases were detected from the scanning curves that were explained by different pore-level fluidflow scenarios. Relative permeability scanning curves to both oil and water phases increased with higher connate-water saturation. Relative permeability to oil was explained on the basis of the occupancy of the oil phase at varying connate-water saturations. The change in the water relative permeability trend was addressed on the basis of the connectivity of water at the varying connatewater saturations. These results and interpretations introduced an improved understanding of the hysteresis phenomena and fluidflow behavior in the TZ of a Cretaceous carbonate reservoir that can assist in the overall reservoir modeling and well planning.
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Cuiec, L.E. 1991. Evaluation of Reservoir Wettability and Its Effects onOil Recovery, Interfacial Phenomena in Oil Recovery, ed. N.R. Morrow, NewYork: Marcel Dekker, 319-75.
Dernaika, M.R., Kalam, M.Z., Skjæveland, S.M. et al. 2012. Hysteresis ofCapillary Pressure, Resistivity Index and Relative Permeability in DifferentCarbonate Rock Types. Petrophysics 53 (5): 316-332.
Fatt, I. 1966. Microscopic Heterogeneity in Reservoir Rock and Its Influenceon Reservoir Behavior. J. Institute of Petroleum (July ).
Heaviside, J. 1991. Measurement of Relative Permeability, In InterracialPhenomena in Oil Recovery, ed. N.R. Morrow, New York: Marcel Dekker,377.
Helland, J.O. and Skjæveland, S.M. 2005. Physically-Based Capillary PressureCorrelation for Mixed-Wet Reservoirs From a Bundle-of-Tubes Model. Paper SPE89428 presented at the 2004 SPE Symposium on Improved Oil Recovery, Tulsa,Oklahoma, 17-21 April. http://dx.doi.org/10.2118/89428-MS.
Honarpour, M.M., Huang, D.D., and Al-Hussainy, R. 1995. SimultaneousMeasurements of Relative Permeability, Capillary Pressure, and ElectricalResistivity with Microwave System for Saturation Monitoring. Paper SPE 30540presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas,22-25 October. http://dx.doi.org/10.2118/30540-MS.
Honarpour, M., Koederitz, L. and Harvey, A.H. 1986. Relative Permeabilityof Petroleum Reservoirs, Boca Raton: CRC Press.
Jackson, M.D., Valvatne, P.H., and Blunt, M.J. 2003. Prediction ofWettability Variation and Its Impact on Waterflooding UsingPore-to-Reservoir-Scale Simulation. J. Pet. Sci. and Eng. 39: 231.
Jerauld, G.R. and Salter, S.J. 1990. Effect of Pore-Structure on Hysteresisin Relative Permeability and Capillary Pressure: Pore-Level Modeling.Transport in Porous Media 5: 103-151.
Land, C.S. 1971. Comparison of Calculated With Experimental ImbibitionRelative Permeability. SPE J. 11 (4): 419-425. http://dx.doi.org/10.2118/3360-PA.
Masalmeh, S.K.2000. High Oil Recoveries From Transition Zones. SPE paper87291 presented at the SPE Abu Dhabi International Petroleum Exhibition andConference, Abu Dhabi, UAE. 13-15 October. http://dx.doi.org/10.2118/87291-MS.
Masalmeh, S.K. 2001. Experimental Measurements of Capillary Pressure andRelative Permeability Hysteresis. Paper SCA 2001-23 presented at the SCAConference, Edinburgh, Scotland, September.
Masalmeh, S.K. and Jing, X.D. 2007. Improved Characterization and Modellingof Carbonate Reservoirs for Predicting Waterflooding Performance. Paper SPE11722 presented at the International Petroleum Technology Conference, Dubai,UAE, 4-6 December. http://dx.doi.org/10.2118/11722-MS.
Morgan, J.T. and Gordon, D.T. 1969. Influence of Pore Geometry on Water-OilRelative Permeability. Paper SPE 2588 presented at the SPE 44th AnnualMeeting, Denver, Colorado, September. http://dx.doi.org/10.2118/2588-MS.
Morrow, N.R. 1990. Wettability and Its Effect on Oil Recovery. J. PetTech 42 (12): 1476-1484.http://dx.doi.org/10.2118/21621-PA.
Morrow, N.R., Fischer, H., Li, Y. et al. 2008. Fundamentals ofReservoir Surface Energy As Related to Surface Properties, Wettability,Capillary Action, and Oil Recovery From Fractured Reservoirs by SpontaneousImbibition, Final Technical Report, University of Wyoming, Laramie,Wyoming,82071 DOE Award No.: DE-FC26- 03NT15408.
Pranter, M.J., Hirstius, C.B., and Budd, D.A. 2005. Scales of LateralPetrophysical Heterogeneity in Dolomite Lithofacies As Determined From OutcropAnalogs: Implications for 3D Reservoir Modeling. AAPG Bull. 89: 645-662.
Torsaeter, O. 1988. A Comparative Study of Wettability Test Methods Based onExperimental Results From North Sea Reservoir Rocks. Paper SPE 18281 presentedat the SPE Annual Technical Conference and Exhibition, Houston, Texas, 2-5October. http://dx.doi.org/10.2118/18281-MS.
Wardlaw, N.C. 1980. The Effects of Pore Structure on Displacement Efficiencyin Reservoir Rocks and in Glass Micromodels. Paper SPE 8843 presented at theFirst Joint SPE/DOE Symposium on Enhanced Oil Recovery, Tulsa, Oklahoma, 20-23April. http://dx.doi.org/10.2118/8843-MS.
Wellington, S.L. and Vinegar, H.J. 1987. X-Ray Computerized Tomography.J. Pet Tech 39 (8): 885-898. http://dx.doi.org/10.2118/16983-PA.
Yuan, H.H. 1991. Pore-Scale Heterogeneity From Mercury Porosimetry Data.SPE Form Eval 6 (2): 233-240. http://dx.doi.org/10.2118/14892-PA.