| 水化对泥页岩地层“安全”钻井的影响 |
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| 引用本文： | 刘向君,罗平亚,刘友家.水化对泥页岩地层“安全”钻井的影响[J].西南石油大学学报（社会科学版）,2016,21(2):49. |
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| 作者姓名： | 刘向君 罗平亚 刘友家 |
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| 作者单位： | 1.西南石油学院油气藏地质及开发工程国家重点实验室,四川 南充 637001; 2.川东开发公司 |
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| 摘 要： | 泥页岩地层与其它“惰性”岩石不同,当其与水基钻井液接触时,岩体强度、内部应力都将随钻井液类型及地层与钻井液的接触时间变化而变化,因此,一个有效的力学本构方程应该能够体现出发生在泥页岩地层中的力学和物理化学动态过程,Yew C H等在这一领域作了开创性工作;并引用Yew C H等提出的水化应力模型,计算分析了水化对水敏性泥页岩地层井周应力分布状态,地层坍塌应力和破裂应力的影响。
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| 收稿时间： | 1999-01-20 |
THE EFFECT OF HYDRATION TO THE FORMATION OF SHALE ON“SAVE”DRILLING |
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| Liu xiang-jun Luo Ping-ya Liu You-jia.THE EFFECT OF HYDRATION TO THE FORMATION OF SHALE ON“SAVE”DRILLING[J].Journal of Southwest Petroleum University(Social Sciences Edition),2016,21(2):49. |
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| Authors: | Liu xiang-jun Luo Ping-ya Liu You-jia |
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| Institution: | Southwest Petroleum Inst |
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| Abstract: | Shale formation is different from “inactive” rocks when contacting with water-based drilling fluid, rock strength and the internal stress around borehole in the hale formation will change with mud properties and time in which shale formation had been opened. Finally stability will be decreased. The effects of hydration on stresses distributions, caving pressure and fracture pressure of shale formation around borehole had been studied quantitatively. The results have illustrated that shale hydration will decrease the fracture pressure, and increase caving pressure. |
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