钻采工艺 ›› 2021, Vol. 44 ›› Issue (4): 90-94.DOI: 10.3969/J. ISSN.1006-768X.2021.04.21

• 钻采机械 • 上一篇    下一篇

随钻微扩眼器研制及应用

贾利春, 邓虎陈俊斌刘先明   

  1. 1 中国石油川庆钻探工程有限公司钻采工程技术研究院 2 长江大学机械工程学院 
  • 出版日期:2021-07-25 发布日期:2021-07-25
  • 作者简介:贾利春(1985-) , 博士, 高级工程师, 主要从事石油与天然气优快钻井技术研究。地址: ( 618300) 四川省广汉市中山大道南二段 88 号, 电话:0838-5151076,13401012285, E-mail: jlc802@ 163. com
  • 基金资助:
    中石油川庆钻探工程公司项目“ 水平井随钻微扩眼器研制及应用”( 编号: CQ2018B-7-3-3)。

Development of Micro-Reaming While Drilling Tool and Its Application in Improving the Quality of Horizontal Well

JIA Lichun1 , DENG Hu1 , CHEN Junbin1 , LIU Xianming2   

  1. 1 . CCDC Drilling & Production Engineering Technology Research Institute, Guanghan, Sichuan 618300, China; 2. College ofMechanical Engineering, Yangtze University, Jingzhou, Hubei 434023, China
  • Online:2021-07-25 Published:2021-07-25

摘要: 弯螺杆钻具组合在水平井钻进中会形成螺旋状井眼,井壁上微台阶、微狗腿现象突出,导致实际井径比预期井眼小,易造成起下钻困难,划眼、电测和下套管时间长。在调研国内外随钻微扩眼器相关技术的基础上,研制了一种适用于Ø215.9 mm水平井的偏心式随钻微扩眼器,采用上、下两组螺旋刀翼清除井壁上微台阶、修整井壁改善井身质量,同时对岩屑床具有扰动破坏作用。现场应用表明,随钻微扩眼器微扩井眼效果好,应用井段的井径扩大最高 9.53%;有助于减少划眼作业时间,提高起下钻时效,应用井段电测、下套管期间无遇阻现象。

关键词: 随钻微扩眼器, 偏心结构, 水平井, 井眼质量, 倒划眼, 钻井时效

Abstract: In sliding drilling of horizontal well, the micro-steps and micro-doglegs of borehole wall are very prominent,which could form a spiral wellbore. This cause the actual well diameter is smaller than the expected wellbore. A smaller wellbore is easy to cause the difficulty of tripping and long-time of reaming, electric logging and casing running. Based on the investigation of the technology of micro-reaming tool at home and abroad, an eccentric micro-reaming while drilling tool is developed in this paper, which is used for Ø215. 9 mm horizontal well. The tool has upper and lower two sets of spiral blades, which are used to remove the micro steps of wellbore walls to improve the quality of the wellbore. Meanwhile, this tool has the effect of disturbing and destroying the cuttings bed. The field application shows that: the tool can effectively eliminate micro-steps of wellbore, and the maximum enlargement of wellbore is 9. 53% ; the tool can be helpful to reduce reaming operation time, improve tripping efficiency, and there is no resistance during the application of electric logging and casing running.

Key words: micro-reaming while drilling tool, eccentric structure, horizontal well, quality of wellbore, back-reaming hole, drilling effectiveness