西南石油大学学报(自然科学版) ›› 2007, Vol. 29 ›› Issue (3): 57-59.DOI: 10.3863/j.issn.1000-2634.2007.03.016
• 石油与天然气工程 • 上一篇 下一篇
李荣1 孟英峰1 罗 勇2 韩 林1
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LI Rong 1 MENG Ying-feng 1 LUO Yong 2 et al.
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摘要： 钻井工程中的井壁稳定问题大多发生在泥页岩井段。根据实验得出的岩石力学参数可以较好的进行井壁稳定及相关问题的力学性质分析。详细介绍了采用三轴岩石力学实验机进行的泥页岩三轴蠕变实验的原理，并根据实验结果按照非线性回归的方法得出了描述变形的本构方程及其蠕变系数，结合该泥页岩的粘土含量，为分析该泥页岩的蠕变规律和计算蠕变压力提供了科学依据。同时，根据不同缩径率所需安全钻井液密度下限的计算公式，得出了相应的钻井液密度下限。
关键词: 蠕变实验, 泥页岩, 本构方程, 钻井液密度
Abstract:
In the drilling operation, wellbore stability mostly occurs in the mudstone and shale section. The rock mechanics parameters obtained from the test can be used to well carry on the wellbore stability and the mechanical properties analysis, the mudstone triaxial creep test carried on the triaxial rock mechanics testing aircraft is introduced in detail, according to the result of the test, by applying the nonlinear regression method, the constitutive equation and its creep coefficient description distortion is obtained, the creep rule and the creep pressure of mudstone is analyzed to provide the scientific basis. Meanwhile, in the view of the calculation formula of safe drilling fluid density deadline required by different undergauge rate, corresponding drilling fluid density is calculated.
Key words: creep test, mudstone, constitutive equation, drilling fluid density
中图分类号:
TE26
李荣 孟英峰 罗 勇 韩 林 . 泥页岩三轴蠕变实验及结果应用[J]. 西南石油大学学报(自然科学版), 2007, 29(3): 57-59.
LI Rong MENG Ying-feng LUO Yong et al.. TRIAXIAL CREEP TEST OF MUDSTONE AND the RESULT APPLICATION[J]. 西南石油大学学报(自然科学版), 2007, 29(3): 57-59.
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