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.
收稿日期: 2003-04-25
引用本文:
邓金根;郭东旭;周建良;刘书杰. 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[J]. 岩石力学与工程学报, 2003, 22(S1): 2250-2253.
Deng Jingen2 Guo Dongxu2 Zhou Jianliang3 Liu Shujie3. Borehole stress calculating model coupling mechanics and chemistry in shale formation and its numerical solving method. , 2003, 22(S1): 2250-2253.
2003, Vol. 22 
