力学与实践 ›› 2015, Vol. 37 ›› Issue (5): 622-625.DOI: 10.6052/1000-0879-14-334

• 应用研究 • 上一篇    下一篇

深水套管切割力学模型

冯定1,2, 鄢标1,2, 王鹏1,2, 卢汉斌1,2, 张红1,2, 魏世忠2, 涂忆柳2   

  1. 1 长江大学非常规油气湖北省协同创新中心, 武汉 430100;
    2 长江大学油气钻完井工具研究中心, 湖北荆州 434023
  • 收稿日期:2014-10-16 修回日期:2015-03-28 出版日期:2015-10-15 发布日期:2015-10-13
  • 通讯作者: 冯定,教授,博士生导师,主要从事油气装备及井下工具的设计、诊断及动态仿真.E-mail:fengd0861@163.com
  • 基金资助:

    高等学校博士学科点科研基金(博导类20124220110003),湖北省自然科学基金创新群体(2012FFA033)和长江大学非常规油气湖北省协同创新中心(HBUOG-2014-7)资助项目.

MECHANICAL MODEL OF CASING CUTTING IN DEEPWATER

FENG Ding1,2, YAN Biao1,2, WANG Peng1,2, LU Hanbin1,2, ZHANG Hong1,2, WEI Shizhong2, TU Yiliuy2   

  1. 1 Yangtze University of Unconventional Oil and Gas Hubei Province Collaborative Innovation Center, Wuhan 430100, China;
    2 Yangtze University of Oil and Gas Drilling and Well Completion Tools Research Center, Jingzhou 434023, Hubei, China
  • Received:2014-10-16 Revised:2015-03-28 Online:2015-10-15 Published:2015-10-13

摘要:

针对深水套管切割力学模型单一、切割泵冲选择困难等问题, 利用长杆铣削模型, 建立了深水套管切割力学模型, 计算出钻柱切割扭矩和切割允许的最大泵冲, 得出了切割扭矩占井口驱动扭矩的比例与作业水深之间的关系, 对深水弃井作业中套管割断判断指标的形成具有指导意义. 结合南海某两口井套管切割的现场数据, 验证了模型的正确性, 其计算结果可以为深水弃井作业中合理的泵冲参数选择提供理论参考, 为深水弃井作业提供技术保证, 进一步提高切割效率, 具有很好的应用价值.

关键词:

弃井作业|套管切割|扭矩|力学模型|深水

Abstract:

A mechanical model of casing cutting in deepwater is proposed based on the model of long pole milling. Through this model, the cutting torque of drill string and the maximum permitted pump stroke can be obtained. It is concluded that the relationship between the proportion of the cutting torque in the drive torque and the depth of water during operating provides some guidance for forming the judge index to determine whether the casing pipe is cut off completely in the deep water. Combined with the field data of two wells in the South China Sea, the model is verified. The results can be used for providing a theoretical reference for selecting the appropriate pump stroke and a technical guarantee for deepwater abandonment operations to improve the cutting speed and the time eficiency.

Key words:

abandonment operation|casing cutting|torque|mechanics model|deepwater

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