油气测试管柱力学分析与优化设计软件及应用  

Software for Mechanical Analysis and Optimization Design of the Oil-gas Test String

作　　者：李敬元[1] 李子丰[1] 郭蕾 

机构地区：[1]燕山大学石油工程研究所 [2]中国石油集团钻井工程技术研究院

出　　处：《石油机械》2013年第4期89-93,共5页China Petroleum Machinery

基　　金：国家自然科学基金资助项目"考虑钻井液动力润滑作用的旋转钻柱涡动状态研究"(51244004)

摘　　要：在油气井测试过程中,特别是高温高压气井、超深井、水平井的测试,测试管柱在轴向力、管内外压力、弯矩、扭矩及温度等因素的作用下,会形成复杂的应力和应变,有时会造成管柱断脱和屈服破坏。为此,开发了油气测试管柱力学分析与优化设计软件。该软件考虑井眼轨道、测试管柱结构、测试阀类型、井内外流体性能、管柱内外压力、管柱与井壁间的摩擦因数、管柱温度及地层温度,可计算出油气测试过程不同作业阶段管柱的受力状态,包含管柱的轴向拉力、扭矩、应力、安全系数、稳定性状态及伸长等参数,可以对多级管柱组合的各级长度进行优化。现场应用结果显示,软件的计算精度满足工程作业需要。In the testing process of oil-gas wells, especially high temperature and high pressure wells, superdeep wells and horizontal wells, the test string will have complex stress and strain due to the effects of axial force, inner and outer pressures of the string, bending moment, torque and temperature. Sometimes string breaking and yield damage will occur. Therefore, the software for the mechanical analysis and optimization design of the oil-gas test string was developed. The software considers shaft trajectory, test string structure, test valve type, fluid performance inside and outside the well, internal and external forces of the string, friction coefficient between string and well wall, string temperature and formation temperature. It can calculate the force conditions of the string at different operating stages in the process of oil-gas testing, including parameters such as string＇ s axial tension, torque, stress, safety coefficient, stability state and elongation. And it can optimize the length of the sections of muhistage string assembly. The field application shows that the calculation precision of the software meets the needs of engineering operation.

关 键 词：试油 试气 测试管柱 力学分析 优化软件 

分 类 号：TE27[石油与天然气工程—油气井工程]