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力学与实践 ›› 2018, Vol. 40 ›› Issue (3): 289-293.doi: 10.6052/1000-0879-17-392

• 应用研究 • 上一篇    下一篇

水平管中残余变形管柱的摩擦力实验

周志宏1, 吕涨, 殷卓成, 郑广, 余礼, 彭雄文   

  1. 长江大学机械工程学院,湖北荆州424023
  • 收稿日期:2017-11-13 修回日期:2018-03-16 出版日期:2018-06-15 发布日期:2018-07-17
  • 作者简介:1) 周志宏,博士,主要从事机械强度与计算固体力学。E-mail: zhouzhh394@126.com

AN EXPERIMENT OF FRICTION OF COILED TUBING WITH RESIDUAL DEFORMATION IN HORIZONTAL WELL

ZHOU Zhihong1, LÄU Zhang, YIN Zhuocheng, ZHENG Guang, YU Li, PENG Xiongwen   

  1. School of Mechanical Engineering, Yangtze University, Jingzhou 424023, Hubei, China
  • Received:2017-11-13 Revised:2018-03-16 Online:2018-06-15 Published:2018-07-17

摘要:

连续油管钻井技术已经广泛应用到油井的各作业中,由于连续油管平时缠绕在滚筒上,塑性变形很大,虽然经过注入头的矫直,仍然会有较大的残余弯曲变形,会严重影响水平井延伸长度。本文通过相似实验得到管柱不同曲径比下所受到的摩擦力曲线拟合函数,然后再通过相似分析验证模型实验的正确性并得到各相似常数,进而求得连续油管与管壁之间的摩擦阻力。经实验数据分析得出5.08 cm (2 in) 的连续油管在经过多次弯曲变形后在水平井段所受到的阻力是理想未发生变形的2.3 倍。由此可以按摩擦系数的两倍来估算管柱所受到的实际延伸摩阻。

关键词:

连续油管|摩阻|残余变形|水平井

Abstract:

The coiled tubing (CT) drilling technology is extensively employed in various operations of oil wells.The residual deformation of the CT caused by the winding on the reel has a magnificent effect on its extension length in horizontal wells. The friction curve fitting functions for various ratios of the diameter of the pipe to that of the tube and the residual deformation curve are obtained through similar experiments. The similarity of the model experiment and the actual coiled tubing operation is analyzed and the similarity constants are obtained, and then the friction between the coiled tubing and the casing wall is calculated. The final results show that the friction of a 2-inch CT with a residual deformation in the horizontal well is about 2.3 times of that of the CT without the residual deformation.

Key words:

coiled tubing|friction|residual deformation|horizontal well

中图分类号: 

  • TE355