| 岩石的各向异性对定向钻井井斜的影响 |
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| 引用本文： | 吕英民,蔡强康.岩石的各向异性对定向钻井井斜的影响[J].中国石油大学学报(自然科学版),1988(3). |
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| 作者姓名： | 吕英民 蔡强康 |
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| 作者单位： | 华东石油学院力学教研室
(吕英民)，华东石油学院力学教研室(蔡强康) |
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| 基金项目： | “七五”国家重点科技攻关课题 |
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| 摘 要： | 本文提出一种新的观点。从岩石各向导性的本构方程出发,用有限单元法研究了地层倾角与定向钻井井斜之间的关系。文中根据弹性力学理论,提出了横观各向同性本构方程,采用八结点等参数单元对地层进行离散化,编制了相应的计算机程序,计算了不同倾角的地层下的井斜角。应用该程序,可以预测岩石的横观各向同性对定向钻井井斜的影响。
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| 关 键 词： | 钻井 岩石 本构方程 有限单元法 |
THE INFLUENCE OF ROCK ANISOTROPY ON HOLE INCLINATON OF DIRECTIONAL DRILLING |
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| Lu Yingmin Cai Qiangkang.THE INFLUENCE OF ROCK ANISOTROPY ON HOLE INCLINATON OF DIRECTIONAL DRILLING[J].Journal of China University of Petroleum,1988(3). |
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| Authors: | Lu Yingmin Cai Qiangkang |
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| Institution: | Lu Yingmin Cai Qiangkang |
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| Abstract: | A new idea is presented in this paper. According to constitutive equations of rock anisot roipy, the relation between deviation of stratum and well inclination in directional drilling has been studied with the finite element method. Based on the theory of elas ticity, the constitutive equatinos for transversely isotropic material are given. Using 8-nodes isoparametric elements, the stratum discretizations and the corresponding computer program of the finite element method is written in the paper. The different deviation of strata hole inclination has been calculated. By using the program, the effects of the transverse isotropy of rock on the variation of hole inclination in directional drilling can be predicted. |
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| Keywords: | Drilling Rock Constitutive equations Finite element method |
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