摘要
采用经典弹性力学理论,解析斜井井壁上的三向主应力.利用Mohr-Coulomb准则研究井壁岩石发生剪切破坏的条件,建立斜井井壁坍塌压力的求解方程,并给出了垂直井和水平井情形下井壁坍塌压力的解析公式.
Based on the classical theory of elasticity, three principal stresses on the wall of the deviated wellbore were obtained and conditions for shear failure of rocks on the wall were studied by the Mohr- Coulomb criterion,then a calculating equation of the collapse pressure on the wall was set up. The equa- tions of the collapse pressure for the vertical and the horizontal wellbores were also presented.
出处
《上海工程技术大学学报》
CAS
2010年第1期1-4,共4页
Journal of Shanghai University of Engineering Science
基金
上海市重点学科建设资助项目(P1401)
上海高校选拔培养优秀青年教师科研专项基金资助项目(gjd09029)
关键词
井壁稳定
斜井
应力分布
剪切破坏
坍塌压力
wellbore stability
deviated wellbore
stress distribution
shear failure
collapse pressure
