水力压裂岩体损伤破裂折迭突变模型研究与应用

doi:10.13722/j.cnki.jrme.2014.s2.003

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Abstract In order to accurately describe the problems of fracturing rock mass damage mutation cracking up crack in the oil and gas field engineering，based on the changes of rock porosity，the rock mass damage variable is defined and the damage constitutive model in the process of rock mass deformation is established. Considering that the process of reservoir fracturing rock mass damage is the accumulation increasing and suddenly releasing of rock mass deformation energy，the folding mutation model of fracturing rock mass damage tensor type is established based on the principle of conservation of energy. The balance equation of fracturing rock mass damage mutation and the calculation model of energy release quantity of rock mass damage mutational damage are given. Combined with quartz sandstone and lithic sandstone characteristics of Sulige block of Changqing Oilfield，the change rule of energy release quantity of rock damage mutational damage under hydraulic fracturing is calculated，and a new method is provided for the study of the oil and gas field fracturing rock mass damage crack formation.

Key words： rock mechanics hydraulic fracturing damage mutation folding mutation model energy release quantity

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	Articles by authors
	ZHAO Wanchun1
	2
	WANG Tingting1
	FU Xiaofei1
	2
	GUAN Bing1

Cite this article:

ZHAO Wanchun1,2,WANG Tingting1, et al. STUDY OF DAMAGE TENSOR FOLDING MUTATION MODEL FOR FRACTURING ROCK MASS AND ITS APPLICATION[J]. , 2014, 33(S2): 3406-3411.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.003 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3406

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