射孔管柱动力学特性研究  

Study on dynamic characteristics of perforating tubing string

作　　者：张平[1] 张明友[2] 张文斌[2] ZHANG Ping;ZHANG Mingyou;ZHANG Wenbin(CNPC Chuanqing Drilling Engineering Company Limited,Chengdu,Sichuan 610056,China;CCDC Workover and Testing Company,Chengdu,Sichuan 610056,China)

机构地区：[1]中石油川庆钻探工程有限公司工程技术部,四川成都610056 [2]中石油川庆钻探工程有限公司试修公司,四川成都610056

出　　处：《油气井测试》2024年第2期1-8,共8页Well Testing

基　　金：川庆钻探工程有限公司科技项目“复杂工况下超深井及大斜度井试油完井管柱力学评价及安全控制方法研究”(CQXN-2022-07);中国石油天然气集团公司关键核心技术攻关“230℃/140 MPa抗硫试油测试关键装备研制”(2021ZG09)。

摘　　要：射孔管柱受射孔弹爆炸冲击载荷易发生变形甚至断裂,保障管柱承载安全性是射孔作业的关键,现有射孔管柱力学分析模型简化条件过多,计算精度有待提高。以射孔爆轰载荷计算方法为基础,根据欧拉-伯努利空间梁理论和间隙元理论,利用有限元方法建立了射孔管柱三维冲击动力学模型,并利用Generalized-α法对模型进行了求解,以实测数据对模型精度进行了验证。以现场实际作业数据为基础,对射孔管柱的动力学特性和安全性进行了分析评估。结果表明,射孔爆轰载荷会使射孔管柱发生剧烈的纵向、横向振动;射孔弹装药量越高对射孔管柱的冲击作用越强烈,油管的振动幅度越大;增加射孔管柱长度可以减小管柱应力;油管壁厚对管柱的动力学行为和安全性能有较大影响。Perforating tubing string are susceptible to deformation or even fracture due to the impact load from perforation shots.Ensuring the bearing safety of tubing string is crucial for perforating operations.However,the existing mechanical analysis models for perforating tubing string often involve too many simplifications,and the computational accuracy needs to be improved.Based on the methods for calculating perforation explosion load,and according to the Euler-Bernoulli beam theory and gap element theory,a 3D dynamic impact model for perforating tubing string was established using the finite element method.The model was solved with a Generalized-αmethod,and the accuracy of the model was validated using measured data.Based on actual field operation data,the dynamic charac-teristics and safety of perforating tubing string were analyzed and evaluated.The results indicate that perforation explosion loads cause severe longitudinal and lateral vibrations in perforating tubing string.The higher the amount of perforating explosive charge,the stronger the impact on tubing string,and the larger the vibration amplitude of the tubing.Increasing the length of the tubing string can reduce the stress on the string;and the thickness of the tubing wall significantly affects the dynamic behavior and safety performance of the tubing string.

关 键 词：射孔 管柱 载荷 力学分析 冲击动力学 振动 模拟计算 

分 类 号：TE257[石油与天然气工程—油气井工程]