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DOI:
地质力学学报:1999,5(1):6-13
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大位移井的井壁稳定力学分析
(石油大学, 北京昌平 102200)
WELLBORE STABILITY ANALYSIS OF EXTENDED REACH WELLS
(University of Petroleum, Changping Beijing 102200)
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投稿时间:1998-05-14    
中文摘要: 从井壁稳定的力学机理出发,分析大位移井周的应力分布规律,建立大位移井井壁稳定的力学模型,并据此编制了Windows环境下的井壁稳定分析软件,形成一个方便工程问题分析的集成环境,利用该软件分析了影响井壁稳定性的因素,提出了大位移井钻井的最优井斜方位和安全泥浆密度的选择方法。
中文关键词: 大位移井  井壁稳定  岩石力学
Abstract:Stability of extended reach wells is an important subject. Instability problems like lost circulation and borehole collapse during drilling operation lead to poor hole conditions causing a lot of problems like poor cement displacement and others. As a result, excessive nonproductive time and expensive wells are experienced.
This paper is based on a linear elastic and isotropic mechanics models for stress distribution around extended wells, with the aim of improve understanding the general behavior of extended wells. According to the established stability mechanics models, a wellbore stability simulator is developed, which runs under Microsoft Windows with friendly interface, high efficiency of field problem analysis. By using the software, the influence of certain factors on wellbore stability is analyzed. These factors include in-situ stress state, deviation, azimuth, strength rock, mechanical property and mud performance. Finally, the guide to determination of the azimuth and the safe mud density range for extended reach wells is presented.
文章编号:     中图分类号:P634.2;TU457    文献标志码:
基金项目:霍英东教育基金资助
引用文本:
金衍,陈勉,柳贡慧,等,1999.大位移井的井壁稳定力学分析[J].地质力学学报,5(1):6-13.DOI:
JIN Yan,CHEN Mian,LIU Gonghui,et al,1999.WELLBORE STABILITY ANALYSIS OF EXTENDED REACH WELLS[J].Journal of Geomechanics,5(1):6-13.DOI:

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