石油科技论坛

石油科技论坛 ›› 2012, Vol. 31 ›› Issue (2): 36-39.DOI: 10.3969/j.issn.1002-302x.2012.02.008

• 技术创新 • 上一篇    下一篇

无固相钻井完井液的研究与应用

王卫国1, 刘梅全2, 艾贵成1, 乔国文1, 盖靖安1, 张宝峰1   

  1. 1. 中国石油西部钻探工程有限公司国际钻井公司;
    2. 中国石油工程技术分公司钻井工程处
  • 收稿日期:2012-02-13 出版日期:2012-04-25 发布日期:2015-12-14

Research and Application of Solid-free Drilling/Completion Fluids

Wang Wei-guo1, Liu Mei-quan2, Ai Gui-cheng1, Qiao Guo-wen1, Gai Jing-an1, Zhang Bao-feng1   

  1. 1. International Drilling Company of CNPC Xibu Drilling Engineering Company Limited;
    2. Drilling Engineering Department of CNPC Engineering Technology Company
  • Received:2012-02-13 Online:2012-04-25 Published:2015-12-14

PDF

摘要： 国内外石油钻井施工中,多使用含有膨润土和较高固相的钻井液,易对储层造成伤害,使储层渗透率大大降低。为满足储层保护的需要,优选增黏剂、降滤失剂、抑制剂、暂堵剂,开发出无固相钻井液体系,即:清水+0.3%Na2CO3+3%FL-1+1%Redu1+0.3%XC+0.3%CMC+1.5%Na-PAN+3%FT-1+2%SPNH+0.2%K-PAM+2%QCX-1。文章分析了无固相钻井完井液作用机理、室内实验及现场应用效果,指出该体系不仅具有良好的悬浮携带性、流变性、润滑性,而且油层保护性能也很好,能够满足低压油层水平井钻进和保护油层的要求。

关键词: 无固相, 完井液, 钻井液, 储层保护

Abstract: Drilling fluid with bentonite and high solid phase has been widely used in drilling construction both at home and abroad, which easily causes injury to reservoir and makes reservoir permeability drop a lot. To protect reservoirs, viscosifier, fluid loss additive, inhibitor, and temporary plugging agent were selected, and solid-free drilling fluids were developed, i.e. clean water +0.3%Na2CO3+3%FL-1+1%Redu1+0.3%XC+0.3%CMC+1.5%Na-PAN+3%FT-1+2%SPNH+0.2%K-PAM+2%QCX-1. This paper analyses the working mechanism, indoor experiment and application results of solid-free drilling/completion fluids, and points out that the fluids do not only have favorable suspension portability, rheological property, and lubricity, but could also protect reservoir well and meet the requirements of horizontal well drilling in low-pressure reservoir and protect the reservoir.

Key words: solid-free, completion fluid, drilling fluid, reservoir protection

中图分类号: