INFLUENCE OF ROCK MECHANICS PARAMETERS ON DEVELOPMENT OF FRACTURE

YUE Xi-wei; DAI Jun-sheng; WANG Ke

Volume 20 Issue 4

Dec. 2014

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Article Navigation > Journal of Geomechanics > 2014 > 20(4): 372-378

YUE Xi-wei, DAI Jun-sheng, WANG Ke, 2014. INFLUENCE OF ROCK MECHANICS PARAMETERS ON DEVELOPMENT OF FRACTURE. Journal of Geomechanics, 20 (4): 372-378.

Citation:

YUE Xi-wei, DAI Jun-sheng, WANG Ke, 2014. INFLUENCE OF ROCK MECHANICS PARAMETERS ON DEVELOPMENT OF FRACTURE. Journal of Geomechanics, 20 (4): 372-378.

Citation:

YUE Xi-wei, DAI Jun-sheng, WANG Ke, 2014. INFLUENCE OF ROCK MECHANICS PARAMETERS ON DEVELOPMENT OF FRACTURE. Journal of Geomechanics, 20 (4): 372-378.

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INFLUENCE OF ROCK MECHANICS PARAMETERS ON DEVELOPMENT OF FRACTURE

Faculty of Earth Science and Technology, China University of Petroleum, Qingdao 266580, Shandong, China

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Abstract

Abstract

Elasticity Modulus, Poisson Ratio and density are key mechanical parameters of rocks. They have effect on development of fracture with other conditions unchanged. The study area of this paper is a gasfield in Tarim Basin. Based on the analysis of palaeo-stess field, we calculate the porosity of reservoir fracture through numerical simulation technique. Then we use the fracture porosity as index, and analyze the rock mechanics parameters influence on fracture development. The results show that with the elasticity modulus increasing, the fracture porosity increase, the lager the elasticity modulus the easier for rocks to rupture under the same stress; and when the Poisson Ratio is less than 0.2, with the Poisson Ratio increasing, the fracture porosity decrease; the Poisson Ratio is larger than 0.2, with the Poisson Ratio increasing, the fracture porosity increase. In addition, fracture porosity is not affected by rock density and can be ignored.
- elasticity modulus,
- Poisson Ratio,
- density,
- fracture porosity,
- numerical simulation

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