泥页岩井壁应力的力学-化学耦合计算模式及数值求解方法

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Abstract Borehole stability problem in shale formation exists in oilfields worldwide, and has not been properly solved yet. In this paper, stress distribution calculating model around borehole after shale hydration is present under the uniform in situ stress on the assumption that shale is linear elastic. The model is solved using finite differential method. Windows application program is written, which can calculate water content after shale hydration and stress redistribution around borehole. The rule of borehole collapse pressure changing with time is also analyzed using this program. The method and results in this paper are instructive for solving the problem of borehole stability in shale.

Received: 25 April 2003

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https://rockmech.whrsm.ac.cn/EN/ OR https://rockmech.whrsm.ac.cn/EN/Y2003/V22/IS1/2250

[1]	. [J]. , 2025, 44(S1): 0-0.