石油学报 ›› 1991, Vol. 12 ›› Issue (3): 100-109.DOI: 10.7623/syxb199103013

• 石油工程 • 上一篇    下一篇

下部钻具组合——不等截面、近钻头稳定器问题的分析

陈祖锡, 高志强   

  1. 石油勘探开发科学研究院
  • 收稿日期:1989-11-25 出版日期:1991-07-25 发布日期:2013-07-08

AN ANALYSIS OF UNEQUAL CROSS SECTION COLLARS AND NEAR BIT STABILIZER WITH BEAM-COLUMN THEORY

Chen Zuxi, Gao Zhiqiang   

  1. Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1989-11-25 Online:1991-07-25 Published:2013-07-08

摘要: 本文是在“纵横弯曲法对钻具组合的三维分析”的基础上,对钻井过程中常遇到的不等截面问题、钻具与井壁之间的接触问题(包括失稳)以及近钻头稳定器问题用纵横法理论作了进一步研究.提出了此类问题的求解方法,扩展了“纵横法”的应用范围.并根据这些方法较为洋细地分析了钻压、井斜角、间隙和井眼曲率等主要因素对钻头侧向力的影响.这些分析在现场进行了验证,达到了预期的效果.

关键词: 钻柱力学, 钻井理论, 定向钻井, 钻具组合, 钻头侧向力

Abstract: According to the three-dimensional analysis of bottom hole assembly vrith beam-column theory,further research work has been made on such problemw as unequal cross section collars,contact between BHA and borehole wall (also elastic instability)and near bit stabilizer.The effects of WOB,inclination and clearance between stabilizer and borehole on the bit side force are discussed in detail.