| 压力系数的上限值研究 |
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| 引用本文： | 李传亮. 压力系数的上限值研究[J]. 新疆石油地质, 2009, 30(4): 490-492 |
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| 作者姓名： | 李传亮 |
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| 作者单位： | 西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500 |
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| 摘 要： | 压力系数大于 1.2 的异常高压只出现在水平地应力大于上覆压力的地层（即挤压构造）中,而且地层岩石必须胶结良好、坚硬,其围岩的密封性能必须良好,同时,地层的水平应力、岩石的胶结程度和围岩的密封性等条件越好,所形成的异常高压越高,压力系数的上限值在 4.0 左右,突破 4.0 的可能性非常小。
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| 关 键 词： | 地层压力 岩石 压力系数 上覆岩层压力 异常压力 |
| 收稿时间： | 2008-09-18 |
A Study on the Maximum of Pressure Factor of Formation |
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| LI Chuan-liang. A Study on the Maximum of Pressure Factor of Formation[J]. Xinjiang Petroleum Geology, 2009, 30(4): 490-492 |
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| Authors: | LI Chuan-liang |
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| Affiliation: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu,Sichuan 610500, China |
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| Abstract: | Pressure factor of formation is defined as ratio of the measured formation pressure to the static hydraulic pressure calculated at the same depth. Formations with pressure factor over 1.2 are abnormally high pressure ones, which are certainly closed formations. The maximum pressure factor is about 4.0, which occurs only in compressive structures with lateral stresses being larger than overburden pressure. And also the formation rocks must be tight and well cemented. The surrounding rocks of formations must have strong closing ability. |
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| Keywords: | formation pressure rock pressure factor overburden pressure abnormal pressure |
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