页岩气高效开采的可压裂度和射孔簇间距预测

Translated title of the contribution: Fracturing degree and prediction of perforation cluster spacing for efficient exploitation of shale gas

Tao Wang, Zhanli Liu, Zhuo Zhuang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The fracturing property of shale reservoirs is a key factor affecting shale gas production. Based on fracture mechanics theory, taking the shear failure of rock bedding weak plane under high confining pressure as the main research object, the concept of fracturing degree is proposed according to the ratio between tensile strength of rock and shear strength of bedding plane. The dimensionless qualitative curve is given, which covers the comprehensive geological and engineering factors of brittle mineral content, viscosity-dominated and toughness-dominated fracture tip fluid pressure and perforation cluster distribution spacing. Then, a new dimensionless parameter is proposed to characterize the fracturing degree of shale under high confining pressure, which can be used as a reference index for engineering. In this paper, fracture mechanics theory is combined with hydraulic fracturing for efficient shale gas production, which has mechanics theoretical significance and engineering application prospects.

Translated title of the contributionFracturing degree and prediction of perforation cluster spacing for efficient exploitation of shale gas
Original languageChinese (Traditional)
Pages (from-to)517-525
Number of pages9
JournalLixue Xuebao/Chinese Journal of Theoretical and Applied Mechanics
Volume54
Issue number2
DOIs
Publication statusPublished - 18 Feb 2022

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