PRESSURE BEHAVIOR ANALYSIS FOR COAL-BED GAS FLOW THROUGH DOUBLE PERMEABILITY MEDIUM IN DEFORMED COAL-BED GAS RESERVOIR

YANG Lei,TONG Deng-ke

doi:10.11764/j.issn.1672-1926.2006.03.429

Natural Gas Geoscience >

2006 , Vol. 17 >Issue 3: 429 - 433

DOI: https://doi.org/10.11764/j.issn.1672-1926.2006.03.429

PRESSURE BEHAVIOR ANALYSIS FOR COAL-BED GAS FLOW THROUGH DOUBLE PERMEABILITY MEDIUM IN DEFORMED COAL-BED GAS RESERVOIR

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China University of Petroleum,Dongying 257061,China

Online published: 2006-06-20

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Abstract

For the stress-sensitive coal-bed gas reservoir,traditional studies assume the formation permeability is constant.However,the assumption will result in significant errors in the estimation of variation of pressure.In this paper,the pressure transient response of the double porosity and double permeability media permeability in stress-sensitive coal-bed gas reservoir is studied.Not only the double permeability feature of coal-bed gas reservoir but also the deformation of medium in stress-sensitive coal-bed.

Key words： Double permeability model; Deformation medium; Numerical solution; Pressure behavior analysis.

Cite this article

YANG Lei,TONG Deng-ke . PRESSURE BEHAVIOR ANALYSIS FOR COAL-BED GAS FLOW THROUGH DOUBLE PERMEABILITY MEDIUM IN DEFORMED COAL-BED GAS RESERVOIR[J]. Natural Gas Geoscience, 2006 , 17(3) : 429 -433 . DOI: 10.11764/j.issn.1672-1926.2006.03.429

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