摘要
随着油气资源开发向深井、超深井及超长水平井等复杂结构井方向发展,连续管技术在冲砂、钻磨、测井等井下作业中成为关键技术工具,但在复杂井况下,连续管易受多因素耦合作用,导致下入深度不足,制约作业效率。本文基于刚杆模型构建了连续管极限下入深度计算模型,综合考虑摩擦系数、流体密度、连续管尺寸及牵引力的耦合作用。通过与文献中的数据对比验证了模型的准确性,并将力学模型嵌入NSGA-Ⅱ算法迭代流程。将该优化方法在某5000 m水平井中应用,结果表明,优化后的连续管参数可使极限下入深度达到5000 m,成功解决了在2990 m处下入“锁死”问题。
As oil and gas resource development advances towards complex structures such as deep wells,ultra-deep wells,and super-long horizontal wells,coiled tubing technology has become a key tool in downhole operations like sand control,drilling and grinding,and logging.However,under complex well conditions,coiled tubing is susceptible to the coupled effects of multiple factors,leading to insufficient insertion depth and constraining operational efficiency.This paper constructs a model for calculating the maximum insertion depth of coiled tubing based on a rigid rod model,taking into ac-count the coupled effects of friction coefficient,fluid density,coiled tubing size,and pulling force.The accuracy of the model is verified by comparing it with data from literature,and the mechanical model is embedded into the iterative process of the NSGA-Ⅱalgorithm.The optimization method was applied to a 5000 m horizontal well,and the results show that the optimized coiled tubing parame-ters enabled the maximum insertion depth to reach 5000 m,successfully resolving the issue of being"locked"at 2990 m.
作者
陈义洪
翁振康
许得禄
娄增
徐传友
齐昌鑫
CHEN Yi-hong;WENG Zhen-kang;XU De-lu;LOU Zeng;XU Chuan-you;QI Chang-xin(College of Mechanical Engineering,Yangtze University,Jingzhou 434023,Hubei,China;Sinopec Jianghan Oilfield Branch Oil and Gas Production Engineering Technology Service Center,Qianjiang 433100,Hubei,China;Western Drilling and Exploration Engineering Co.,Ltd.,Downhole Operation Company,Karamay 834000,Xinjiang,China)
出处
《阀门》
2025年第7期707-712,共6页
Chinese Journal of Valve
基金
2020-2025中国石油天然气集团公司有限公司科技项目“200℃/105 MPa连续管钻磨/射流作业工具研制”(2020B-4018)。
关键词
NSGA-Ⅱ算法
连续管
极限下入深度
优化
NSGA-II algorithm
continuous tubing
maximum insertion depth
optimization
