爆轰冲击载荷作用下封隔器锚固系统失效研究  

Failure analysis of packer anchorage system under blast impact load

作　　者：刘献博 李军[1,2] 柳贡慧 王典[1] 席岩 连威 LIU Xianbo;LI Jun;LIU Gonghui;WANG Dian;XI Yan;LIAN Wei(College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China;College of Petroleum,China University of Petroleum-Beijing at Karamay,Karamay 834000,China;College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]中国石油大学(北京)石油工程学院,北京102249 [2]中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000 [3]北京工业大学建筑工程学院,北京100124

出　　处：《中国石油大学学报(自然科学版)》2025年第2期151-158,共8页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金青年科学基金项目(52204018);国家自然科学基金联合基金集成项目(U22B6003);国家自然科学基金联合基金重点支持项目(U22A20164)。

摘　　要：随着油气储层逐渐走向深层、超深层,射孔过程中完井管柱安全性问题受到越来越多的关注。基于爆炸动力学理论,结合井下射孔工况,建立井底-射孔串-封隔器井段的射孔爆轰冲击数值模型,明确射孔爆轰冲击波发生原理,揭示爆轰冲击波传播、反射规律。基于射孔爆轰冲击计算模型,分析热力耦合作用下封隔器服役可靠性。结果表明:射孔爆轰冲击波在传播至井底、封隔器位置处时发生了多次的反射叠加,传播空间的变化会引起爆轰冲击波幅值的快速增大;减小卡瓦锥角、增加卡瓦倾角及牙型角均可有效提高卡套接触压力,进而降低爆轰冲击载荷作用下封隔器失效风险。In deep oil and gas well drilling and completion,the safety of the completion tubular column during perforating process has received more and more attention.In this study,a numerical model of the explosive perforation process for the bottom of the well/perforation string/packer well section was established based on the downhole injection conditions and the theory of explosion dynamics,in order to clarify the mechanisms of the explosion blast shock wave generation and reveal its propagation and reflection behavior.Based on the numerical model of shot-hole blast impact,the service reliability of the packer under the impact load and thermal coupling effect was analyzed.The results show that,during the shot-hole blast shock wave propagating to the bottom of the well and to the packer,multiple reflection superposition occurs,and the change of the propagation space can cause a rapid increase of the blast shock wave amplitude.The risk of the packer failure under the blast impact load can be reduced by reducing the taper angle and increasing the tilt and tooth angles of the packer.

关 键 词：射孔 爆轰冲击载荷 完井管柱 封隔器 失效分析 

分 类 号：TE931[石油与天然气工程—石油机械设备]