石油学报 ›› 1995, Vol. 16 ›› Issue (3): 123-128.DOI: 10.7623/syxb199503019

• 石油工程 • 上一篇    下一篇

考虑井壁岩石损伤时保持井眼稳定的泥浆密度

刘玉石1, 白家祉1, 周煜辉1, 黄荣樽2   

  1. 1. 石油勘探开发科学研究院;
    2. 石油大学
  • 收稿日期:1993-04-12 修回日期:1993-11-05 出版日期:1995-07-25 发布日期:2013-07-06
  • 作者简介:刘玉石,1981年毕业于大连理工大学工程力学系.现任石油勘探开发科学研究院(北京)钻井所高级工程师.通讯处:北京学院路20号.邮政编码:100083.

MUD DENSITY FOR WELLBORE STABILITY WHEN FORMATION ROCK IS DAMAGED

Liu Yushi1, Bai Jiazhi1, Zhou Yihui1, Huang Rongzun2   

  1. 1. Scientific Research Institute of Petroleum Exploration and Development, Beijing;
    2. Petroleum university, Beijing
  • Received:1993-04-12 Revised:1993-11-05 Online:1995-07-25 Published:2013-07-06

摘要: 钻井施工中保持并眼稳定的措施之一是确定合适的钻井液密度.本文采用摩尔-库仑屈服条件,考虑材料损伤后的应变软化特性,对井壁岩石进行力学分析,给出维持井壁稳定的泥浆密度.

关键词: 损坏, 井眼稳定, 井压力, 钻井液, 密度

Abstract: One of the methods to keep wellbore stability during drilling is to select the proper muddensity.In this paper the stress around a deviated wellbore was analyzed according to the Mohr-Coulomb failure criterion when considering the strain soft character of damaged rockmaterials.

Key words: damage wellbore stability well pressure drilling mud density