Analysis of Two-Phase Gas–Water Flow in Carbonate Reservoirs
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Gas–water relative permeability (GWRP) is measured in the tests of full-diameter cores. Based on the obtained GWRP curves, the standard normalized curves are plotted for three types of carbonate reservoirs: matrix pore, fracture and solution pore. The corresponding gas and water two-phase flow model was deduced by considering stress sensitivity and non-Darcy effect, and the IPR curve calculation and analysis of gas wells of the three types were carried out. Based on huge gap between the matrix and fracture permeability, the phenomenon of gas drive water mainly exists in the cracks. So the conventional gas–water relative permeability of fractured gas reservoirs was modified.
KeywordsCarbonate rock matrix pore type fracture type solution cave type gas–water relative permeability inflow performance relationship
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- 1.Gao Shusheng, Hu Zhiming, An Weiguo, et al., Distribution Characteristics of Dolomite Reservoir Pores and Caves of Longwangmiao Fm Gas Reservoirs in the Sichuan Basin, Natural Gas Industry, 2015, vol. 34, no. 3, pp. 103–108.Google Scholar
- 2.Jia Ailin, Yan Haijun, Guo Jianlin, et al., Development Characteristics for Different Types of Carbonate Gas Reservoirs, Acta Petrolei Sinica, 2013, 34(5), pp. 914–923.Google Scholar
- 3.Gracel P. Diomampo, Relative Permeability through Fractures, California: Stanford University, August 2001, pp. 7–35.Google Scholar
- 4.Nick Speyer, Li Kewen, and Horne Roland, Experimental Measurement of Two-Phase Relative Permeability in Vertical Fractures, Thirty-Second Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, 2007, vol. 1, pp. 22–24.Google Scholar
- 5.Chih-Ying Chen, Liquid-Gas Relative Permeabilities in Fractures: Effects of Flow Structures, Phase Transformation and Surface Roughness, California: Stanford University, 2005.Google Scholar
- 6.Yi Min, Guo Ping, and Sun Liangtian, An Experimental Study on Relative Permeability Curve for Unsteady-State Gas Displacement by Water, Natural Gas Industry, 2007, vol. 27, no. 10, pp. 92–94.Google Scholar
- 7.Zhong Xiao and Du Jianfen, Gas-Water Permeability Characteristics and High Temperature and High Pressure Experimental Study, J. of Chongqing University of Science and Technology (Natural Sciences Edition), 2013, 15(3), pp. 70–73.Google Scholar
- 8.He Gengsheng, Petrophysics, Beijing, Petroleum Industry Press, 1994.Google Scholar
- 9.Vahid Khosravi, Various Methods to Determine Relative Permeability in Fractured Reservoirs, SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth, Australia, 2012, SPE158384.Google Scholar
- 10.Luo Shunshe, Peng Yuhui, Wei Xinshan, et al., Characteristics and Classification of Gas-Water Relative Permeability Curves of Tight Sandstone Reservoirs in Sulige Gas Field, J. of Xi'an Shiyou University (Natural Science Edition), 2015, vol. 30, no. 6, pp. 55–61.Google Scholar