石油学报 ›› 2000, Vol. 21 ›› Issue (1): 76-80.DOI: 10.7623/syxb200001014

• 石油工程 • 上一篇    下一篇

用旋转导向钻井系统钻大位移井

张绍槐, 狄勤丰   

  1. 西安石油学院, 陕西西安710065
  • 收稿日期:1998-01-06 修回日期:1998-05-25 出版日期:2000-01-25 发布日期:2010-05-21
  • 作者简介:张绍槐,男,1931年1月生.1953年2月毕业于清华大学.现为西安石油学院教授,博士生导师.通讯处:陕西省西安市.
  • 基金资助:
    国家自然科学基金(59474003)“井身轨道制导的智能钻井系统的理论与实验研究”部分成果

DRILLING EXTENDED REACH WELL WITH ROTARY STEERING DRILLING SYSTEM

ZHANG Shao-huai   

  1. Xi'an Petroleum Institute
  • Received:1998-01-06 Revised:1998-05-25 Online:2000-01-25 Published:2010-05-21

摘要: 在用滑动导向系统钻大位移井时,随着位移及井深的不断增大,由于上部钻柱不旋转,会引起摩阻和扭矩过大、方位漂移失控、井眼清洗不良等问题.计算和实践表明,用滑动导向系统进行钻井时,大位移井的极限延伸能力受到了限制.文中对用旋转导向系统钻大位移井进行了方案性研究,设计了相应的可遥控和井下自动控制的旋转导向工具RSDS,并对旋转导向的机理进行了理论研究.所设计的旋转导向工具以钻井液为动力,充分利用了钻井液的冷却作用,具有较好的工作可靠性,结构简单.用旋转导向系统RSDS进行大位移井钻井,可望相当准确的控制井眼轨迹,大幅度减少钻柱所受的摩阻和扭矩,显着改善井眼的清洁状况.

关键词: 钻井工程, 大位移井, 水平井, 旋转导向, 实时控制, 偏差矢量, 随钻测量

Abstract: The torque and drag of the drillstring in extended reach well will increase extremely with the increase of the depth and displacement when the top string does not rotate during sliding steering drilling operation. The hole cleaning will also be impaired and the hole direction control will be very difficult. The future application of ERD will be challenged by these problems. It is recognized that the extreme extension of the extended reach well is limited when sliding steering system is applied. A schematic research using rotary steering tool to drill ERD has been done in this paper. RSDS (Rotary Steering Drilling System), a rotary steering tool, that can be telecontrolled and controlled automatically in the downhole, the working mechanism and design were studied theoretically. The rotary steering tool studied in this paper is powered and cooled by drilling fluid, it's reliable and has simple structure. RSDS will control well path accurately, reduce torque and drag remarkably and improve hole cleaning condition obviously. The drilling practices of ERD will be more reliable if RSDS is used.

Key words: drilling engineering, extended reach well, horizontal well, rotary steering, real-time control, bias vector, measurement while drilling

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