THE RADIAL PERCOLATING CHARACTERISTICS OF LOW PERMEABILITY IN NONHOMOGENEOUS RESERVOIRS

doi:10.3863/j.issn.1000-2634.2007.05.20

西南石油大学学报(自然科学版) ›› 2007, Vol. 29 ›› Issue (5): 72-76.DOI: 10.3863/j.issn.1000-2634.2007.05.20

• 石油与天然气工程 • Previous Articles Next Articles

THE RADIAL PERCOLATING CHARACTERISTICS OF LOW PERMEABILITY IN NONHOMOGENEOUS RESERVOIRS

WANG Dao-cheng ZHAO Li-qiang LIU Ping-li et al

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu Sichuan 610500, China

Received:2007-03-01 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20
Contact: WANG Dao-cheng

Abstract

Abstract: By means of the equation of threshold pressure gradient and permeability regressed by experimental method, and the threshold pressure gradient distribution of heterogeneous reservoirs which is derived from the equation, the math model of flowing through porous media and infinite differential equation at three dimentions and three phases radius axis considering threshold pressure gradient. The threshold pressure gradient at each grid in the equation can be considered as different value, and the threshold pressure gradient value at the grid can be given by initial parameter field, corresponding sofeware is developed, the comparision is done under the conditions of not considering threshold pressure gradient, constent threshold pressure gradient and unevenly distributed threshold presuure gradient.

Key words: low permeability, heterogeneous, differential, threshold pressure gradient, character of production

CLC Number:

TE822

WANG Dao-cheng ZHAO Li-qiang LIU Ping-li et al. THE RADIAL PERCOLATING CHARACTERISTICS OF LOW PERMEABILITY IN NONHOMOGENEOUS RESERVOIRS[J]. 西南石油大学学报(自然科学版), 2007, 29(5): 72-76.

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THE RADIAL PERCOLATING CHARACTERISTICS OF LOW PERMEABILITY IN NONHOMOGENEOUS RESERVOIRS

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