油田用膨胀管塑性变形评价研究与试验  

Evaluation and Testing of Plastic Deformation of the Solid Expandable Tubular

作　　者：李涛[1,2] 杨加佳[3] 陈强[2] 李益良[2] 裴晓含[2] 

机构地区：[1]中国石油大学(北京) [2]中国石油勘探开发研究院 [3]湖南工业大学机械工程学院

出　　处：《石油机械》2014年第9期1-5,共5页China Petroleum Machinery

基　　金：中国石油天然气勘探开发公司项目"膨胀管补贴技术"(10100030kt13);陕西省科技统筹创新工程项目"油气生产参数实时监测与储层探测"(2012KTCL01-10)

摘　　要：膨胀管大塑性变形过程中的变形力、壁厚与长度变化量是膨胀管的主要评价参数,也是膨胀管技术现场应用设计的重要依据。为此,分析了膨胀管塑性变形过程的力学行为,利用静力平衡方程与Levy-Mises金属流动准则建立了膨胀率与塑性变形力、膨胀率与壁厚以及长度收缩率关系的数学模型,并开展了有限元数值模拟和试验研究。研究结果表明,在膨胀率8%~24%条件下的膨胀管试验结果与理论计算值以及有限元模拟值符合较好,说明理论计算公式以及有限元模型能够合理预测膨胀管变形时的参数变化。该项研究结果可以作为膨胀管现场施工的设计依据。The deformation force, wall thickness and length variation during the severe plastic deformation of expandable tubular are the main parameters for expandable tubular evaluation and also are important bases for the expandable tubular technology field application. Thus, the mechanical behavior of plastic deformation of the expandable tubular is analyzed. Based on the equation of static equilibrium and Levy-Mises metal flow criteria, the mathematical models for describing the relations of expansion rate and the plastic deformation force, shrinkage of the tubular wall thickness and length are established. Then, finite element numerical simulation and testing study are carried out. The results show that, given the expansion rate of 8% to 24%, the results of theoreticaX calculation and finite element simulation match well with the testing results, indicating that the theoretical calculation formula and the finite element model could reasonably predict the parameters changes during the deformation of expandable tubular. The study results could provide design basis for the field application of expandable tubular.

关 键 词：膨胀管 塑性变形 参数预测 数学模型 有限元 数值模拟 

分 类 号：TE925[石油与天然气工程—石油机械设备]