基于三维井眼轨迹的连续管力学分析软件开发与应用  

Development and Application of Coiled Tubing Mechanical Analysis Software Based on Three-dimensional Wellbore Trajectory

作　　者：贺健烽 贾晓丽[1,2] 刘恒祥 戴京廷 王永强 于天淼 HE Jianfeng;JIA Xiaoli;LIU Hengxiang;DAI Jingting;WANG Yongqiang;YU Tianmiao(College of Mechanical and Transportation Engineering,China University of Petroleum-Beijing,Beijing 102249,China;Center of Advanced Oil and Gas Equipment,China University of Petroleum-Beijing,Beijing 102249,China;Sany Petroleum Intelligent Equipment Co.,Ltd.,Beijing 102208,China)

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249 [2]中国石油大学(北京)高端油气装备智能设计制造研究中心,北京102249 [3]三一石油智能装备有限公司,北京102208

出　　处：《石油矿场机械》2025年第2期39-45,共7页Oil Field Equipment

基　　金：国家重点研发计划(2016YFC0303700);国家自然科学基金(12372145);北京市昌平科技副总专项“深地油气顶部驱动钻井装置关键零部件”(202302004010-TC240HAJ8-173)。

摘　　要：连续管目前已在油气田勘探开发领域广泛应用,其井下受力情况复杂,易发生屈曲现象,出现下入性问题。因此在进行作业之前,有必要对连续管展开力学分析。基于三维井眼轨迹的连续管受力控制方程,并考虑螺旋屈曲影响,运用受力迭代计算方法,迅速迭代求解连续管的有效轴力、地面悬重力、最大下深等参数,开发了连续管井下力学分析软件。将开发软件应用于四川胜页9-3井洗井作业以及YS137H3-4井辅助射孔作业中,与现场分析数据进行对比后发现,有效轴向力计算精度达90.49%以上,地面悬重力计算精度达89.24%,对于无法下入到井底的工程应用而言,最大下深的计算精度为93.70%。提出的连续管井下受力迭代计算方法计算结果准确可靠,且计算效率高。以此为基础开发的连续管力学模拟分析软件具有良好的实际应用推广价值。Coiled tubing (CT) is now widely used in the exploration and development of oil and gas fields. Due to the complex stress conditions in the wellbore, it is prone to buckling, which poses a challenge to its use. Therefore, a mechanical analysis of CT is required before operation. In this paper, a force control equation for CT was established based on the three-dimensional borehole trajectory, taking into account the effect of helical buckling. The force iteration calculation method was applied to quickly solve the effective axial force, surface hook load and maximum reach depth of CT. Based on this method, a CT downhole mechanical analysis software was developed. The software was applied to the well cleaning operation in the Shengye 9-3 well and the auxiliary perforation operation in the YS137H3-4 well in Sichuan. Comparison with field data showed that the effective axial force calculation accuracy reached over 90.49%, the surface hook load calculation accuracy reached 89.24%, and for operations where reaching the bottom was not possible, the maximum reach depth calculation accuracy was 93.70%. The iterative calculation method of CT downhole force proposed in this paper is accurate and efficient, and the CT mechanical simulation analysis software developed on this basis has significant practical application value.

关 键 词：连续管 管柱力学 三维井眼 屈曲 软件开发 

分 类 号：TE933.8[石油与天然气工程—石油机械设备]