LOW-SPEED AND NON-LINEAR FLOW THROUGH POROUS MEDIA NUMERICAL SIMULATION FOR LOW-PERMEABILITY GAS RESERVOIR

doi:10.3863/j.issn.1674-5086.2009.02.041

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (2): 163-166.DOI: 10.3863/j.issn.1674-5086.2009.02.041

• 探讨与争鸣 • Previous Articles

LOW-SPEED AND NON-LINEAR FLOW THROUGH POROUS MEDIA NUMERICAL SIMULATION FOR LOW-PERMEABILITY GAS RESERVOIR

XUE Guo-qing¹ LI Min² LUO Bi-hua¹ WANG Yong-hong³

1.Zhanjiang Branch of CNOOC Ltd.，Zhanjiang Guangdong 524057，China；2.State Key Lab of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University，Chengdu Sichuan 610500，China；3.Natural Gas Department，Tarim Oilfield Company，Korla Xinjiang 841000，China

Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20

Abstract

Abstract: A lot experiment indicates that low-speed flow through porous media in low-permeability gas reservoir should overcome not only threshold pressure gradient but also slippage effects.Abase on the characteristics，a non-linear flow through porous media mathematical model and finite difference equation with considering threshold pressure gradient and slippage effects are established and numerical simulator is developed，then four conditions are studied and compared，1，without considering threshold pressure gradient and slippage effects，2，only considering threshold pressure gradient，3，only considering slippage effects，4，considering both threshold pressure gradient and slippage effects.The numerical simulation results show that the cumulative gas production of condition 3 is the best，condition 4 is the second，condition 1 is the third，and the second is at the least.Therefore，threshold pressure gradient and slippage effects impact a big effect on the production of low-permeability gas reservoirs，so the model is validable and applicable.

Key words: low permeability, non-linear, threshold pressure gradient, gas slippage effects, numerical simulation

CLC Number:

TE319

XUE Guo-qing LI Min LUO Bi-hua WANG Yong-hong . LOW-SPEED AND NON-LINEAR FLOW THROUGH POROUS MEDIA NUMERICAL SIMULATION FOR LOW-PERMEABILITY GAS RESERVOIR[J]. 西南石油大学学报(自然科学版), 2009, 31(2): 163-166.

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LOW-SPEED AND NON-LINEAR FLOW THROUGH POROUS MEDIA NUMERICAL SIMULATION FOR LOW-PERMEABILITY GAS RESERVOIR

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