The Calculation of Hydration Collapse Pressure and The Determination of Collapse Cycle of Mud Shale in Sulige Gas Field

摘要：

In this paper, a mechanical and chemical coupled model of mud shale wellbore wall stability is established, and according to the actual situation of Sulige gas field, the stability of the wall is also analyzed by adapting the Mohr-Coulomb criteria and using the rock mechanics parameters determined by laboratory testing. At the same time, in order to make the results more realistic, necessary improvements will be carried out to the effective stress. At last we get to know the changes of collapse pressure, and also identify the hydration collapse cycle should be 6 to 7 days in Sulige areas.

关键词： wellbore wall stabihty mechanical chemical couple collapse cycle

作者: WANG Junqi XIE Yapeng

作者单位: School of Petroleum Engineering ,Xi’an Shiyou University, P.R.China, 710065

会议类型: 国际会议

会议名称: 2010 International Symposium on Multi-field Coupling Theory of Rock and Solid Midia and Its Applications(2010年岩土多场耦合理论及应用国际学术论坛)

会议地点: 成都

会议语种:英文

页码: 241-246

在线出版日期: 2010-10-10（万方平台首次上网日期，不代表论文的发表时间）