Experimental Study of Wettability Alteration to Gas Wetness Method to Enhance Coal Bed Methane Production
Authors
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Associate Professor, Petroleum Engineering College of Yangtze University, Hubei ,CN
Ma Dong -
Postgraduate Student, Petroleum Engineering College of Yangtze University, Hubei ,CNZhang Peng
Keywords:
Coal Bed Methane, Enhance Production, Wettability Alteration.Abstract
It is of great importance and significance to study the production improvement technology for coal bed methane. Wettability alteration technology has been successfully applied to enhance oil production and recovery. However, literature on wettability technology used to enhance production of coal bed methane has not been reported. In this paper, a physical model was developed to describe the mechanism of wettability alteration technology to enhance coal bed methane. Gas-water displacement test was conducted in coal samples with and without the wettability alteration to gas wetness. Comparison of gas-water relative permeability curve before and after wettability alteration showed that wettability alteration technology could increase gas phase relative permeability, and reduce water residual water saturation in the gas-water displacement. The experimental results demonstrated that the wettability alteration to gas wetness technology can enhance the production of coal bed methane.
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References
Buckley, S. E. and Leverett, M. C. (1942): “Mechanism of Fluid Displacement in Sands,'” Trans., AIME (1942) 146, 107.
Li, K. and Firoozabadi, A. (2000): .“Experimental Study of Wettability Alteration to Preferential Gas-Wetting in Porous Media and Its Effects.” SPEREE 3 (2): 139-149. SPE-62515-PA. DOI: 10.2118/62515-PA, 2000.
Li, K. and Firoozabadi, A. (2000): “Phenomenological Modeling of Critical Condensate Saturation and Relative Permeabilities in Gas/Condensate Systems.” SPEJ 5 (2): 138-147. SPE-56014-PA. DOI: 10.2118/56014-PA, 2000.
Li, K. and Horne, R. N. (2006): “Comparison of methods to calculate relative permeability from capillary pressure in consolidated water wet porous media.” Water Resources Research, 2006, 42(6).
Noh, M. and Firoozabadi, A. (2008): “Wettability alteration in gas-condensate reservoirs to mitigate well deliverability loss by water blocking.” SPE Reservoir Evaluation & Engineering, 2008, 11(4):676-685.
Palmer, I. and Mansoori, J. (1998): “How permeability depends on stress and pore pressure in coalbeds: a new model.” SPE Reservoir Evaluation & Engineering, 1998, 1(6): 539-544.
McKee, C. R., Bumb, A. C. and Koenig, R. A. (1988): “Stress-dependent permeability and porosity of coal and other geologic formations.” SPE Formation Evaluation, 1988, 3(1):81-91.
Gray, I. (1987): “Reservoir Engineering in Coal Seams: Part 2-Observations of Gas Movement in Coal Seams.” SPE Reservoir Engineering, 1987, 2(1) : 35-40.
Seidle, J. and Huitt, L. (1995): Experimental measurement of coal matrix shrinkage due to gas desorption and implications for cleat permeability increases: International Meeting on Petroleum Engineering. 1995.
Tiab, D. and Donaldson, E. C. (2011): Petrophysics : theory and practice of measuring reservoir rock and fluid transport properties. 2011.
