THE SECURITY AND STABILITY ANALYSIS OF CAP ROCK OF UNDERGROUND GAS STORAGE IN AQUIFER UNDER PRESSURE

摘要：

Underground gas storage in aquifer is one of the important ways to reserve natural gas .It is composed of thick confined aquifer, cap rock and trap. Security and stability of underground gas storage has a decisive effect on it. In this paper, the changing laws about reservoir pressure were studied by numerical simulation method at different permeability and injection rate. The effect of reservoir pressure to the stability of cap rock is studied. The results show that reservoir pressure has an asymmetrical distribution with the relief of reservoir. Increasing of reservoir pressure is little at lower injection rate and greater permeability. The higher injection rate has an effect on the vertical deformation of cap rock and no effect on the horizontal deformation. The stress on the bottom of cap rock has a non - monotonic distribution in injection and production process.

关键词： underground gas storage confuted aquifer numericd Simula ion reservoir pressure security and stability

作者: Zhang Hua-bin Li Yun-peng Zhao Bin Wang Ya-li

作者单位: China University of Petroleum,Beijing 102249,China

会议类型: 国际会议

会议名称: The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)

会议地点: 北京

会议语种:英文

页码: 399-404

在线出版日期: 2010-09-27（万方平台首次上网日期，不代表论文的发表时间）