A theoretical formula of stress sensitivity index with compressibility of rock

LIU Shugen; HUANGWenming; ZHANG Changjun; ZHAO Xiafei; DAI Sulan; ZHANG Zhijing; QIN Chuan

doi:10.3969/j.issn.1673-8926.2007.04.017

Lithologic Reservoirs >

2007 , Vol. 19 >Issue 4: 95 - 98

DOI: https://doi.org/10.3969/j.issn.1673-8926.2007.04.017

A theoretical formula of stress sensitivity index with compressibility of rock

LIU Shugen ,
HUANGWenming ,
ZHANG Changjun ,
ZHAO Xiafei ,
DAI Sulan ,
ZHANG Zhijing ,
QIN Chuan

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

Online published: 2007-12-15

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Abstract

Permeability of rock will change with the stress applied on, which is called the stress sensitivity of reservoir rocks. Stress sensitivity of rock is closely related to its compressibility. The more compressible the rock is, the higher the stress sensitivity index will be. A theoretical formula is proposed between the stress sensitivity index and the compressibility of rock. According to this formula, due to the weak compressibility of rock, the stress sensitivity is extremely minus, which can be neglected in production of reservoirs.

Key words： dolomite genesis; carbonate rocks; hydrothermal dolomitization; Sichuan Basin

Cite this article

LIU Shugen , HUANGWenming , ZHANG Changjun , ZHAO Xiafei , DAI Sulan , ZHANG Zhijing , QIN Chuan . A theoretical formula of stress sensitivity index with compressibility of rock[J]. Lithologic Reservoirs, 2007 , 19(4) : 95 -98 . DOI: 10.3969/j.issn.1673-8926.2007.04.017

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