小井眼套管整圆工具有限元力学计算  

Finite Element Mechanical Calculation of Slim Hole Casing Shaping Tool

作　　者：席武军 谢津梁 赵智成 刘宝振 穆总结 XI Wu-jun;XIE Jin-liang;ZHAO Zhi-cheng;LIU Bao-zheng;MU Zong-jie(Downhole Service Company of CNPC Xibu Drilling Engineering Company Limited,Karamay 834099,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China;The Karamay Branch of State Key Laboratory of Petroleum Resources and Prospecting,China Petroleum University-Beijing at Karamay,Karamay 834000,China)

机构地区：[1]中国石油西部钻探工程公司井下作业公司,克拉玛依834099 [2]中国石油大学(北京),油气资源与探测国家重点实验室,北京102249 [3]中国石油大学(北京)克拉玛依校区,油气资源与探测国家重点实验室克拉玛依分室,克拉玛依834000

出　　处：《科学技术与工程》2024年第3期1029-1035,共7页Science Technology and Engineering

基　　金：国家自然科学基金面上项目(52274017);新疆维吾尔自治区杰出青年科学基金(2021D01E23)。

摘　　要：玛湖地区是重要的非常规油气聚集区块。在开发过程中发现,压力窜逸引起套管变形损坏,常规套管修复工具无法满足修复要求。因此,设计小井眼套管整圆工具。为评价小井眼套管整圆工具的修复效果,建立套管整圆评价函数,并采用有限元方法建立∅127 mm套管变形模型,模拟玛湖地区因压力窜逸引起的套管变形过程,在此基础上建立膨胀锥-变形套管力学模型,模拟小井眼套管整圆工具对变形套管的无损修复过程。在模拟中,变形套管管内面积从8354.54 mm^(2)修复至8500.71 mm^(2),管内面积平均增加约146.17 mm^(2),套管平均整圆效率约为53.83%。结果表明,小井眼套管整圆工具具有显著的修复效果。本技术可为井筒完整性长生命周期提供技术借鉴。The Mahu region is an important unconventional oil and gas accumulation block.During its development,it is observed that casing deformation damage occurred due to pressure escape,and conventional casing repair tools proved inadequate for meeting the repair requirements.Consequently,a casing-shaping tool was designed.To evaluate the effectiveness of the designed tool for repairs,an evaluation function for casing repair efficiency was established.A∅127 mm casing deformation model was created using the finite element method to simulate the process of casing deformation resulting from pressure escape in the Mahu region.Building upon this,a mechanical model of cone expansion-deformed casing was established to simulate the non-destructive repair process using the casing repair tool for the deformed casing.In the simulation,the inner area of the deformed casing was repaired from 8354.54 mm^(2) to 8500.71 mm^(2),representing an average increase of approximately 146.17 mm^(2).The average casing rounding efficiency was found to be approximately 53.83%.The results demonstrate the significant reparative effect of the designed casing repair tool.This technology can serve as a valuable technical reference for ensuring the long-term wellbore integrity throughout its life cycle.

关 键 词：套管修复 数值模拟 套管变形 有限元仿真 力学计算 

分 类 号：TE358[石油与天然气工程—油气田开发工程]