论文详情

传统底部钻具组合上切点边界条件的正确性

石油钻采工艺

2002年 24卷第1期

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Title

ACCURACY OF THE BOUNDARY CONDITIONS AT THE UPPER TANGENT OF THE CONVENTIONAL BHA

作者

李子丰李同林

Authors

Li Zifeng Li Tonglin

单位

中国地质大学工程学院, 湖北武汉 430074

Organization

Engineering Inst. of China Geology University

摘要

传统的底部钻具组合受力分析的上切点处的边界条件表达为:1.与下井壁接触;2.转角与井眼轴线的一致;3.曲率与井眼轴线的一致。该表达方法已经采用了多年,应用效果良好。近来,有文章否定该边界条件,文中例证了传统底部钻具组合上切点边界条件的正确性。

Abstract

The boundary conditions at the upper tangent of the conventional bottom hole assembly can be expressed as: 1. Contacts the lower side of the bore wall; 2. The corner angle conforms to the hole axial line; 3. The curvature conforms to the hole axial line. This expression has been used for years with no problem, yet some paper at home denies it lately. The accuracy of the boundary conditions expression is illustrated and proved in this paper.

关键词：

底部钻具组合; 钻柱力学; 边界条件; 上切点;

Keywords:

bottom hole assembly; drill stem mechanics; boundary condition; upper tangent;

基金项目

DOI

10.3969/j.issn.1000-7393.2002.01.010