井下管柱状态测试短节的机械结构设计  

The Mechanical Structure Design of Downhole String State Measurement System

作　　者：邓旭[1] 刘明尧[1] 马宏伟[2] 杨伯阳[2] 

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]河南油田分公司石油工程技术研究院,河南南阳473123

出　　处：《石油钻探技术》2007年第1期49-52,共4页Petroleum Drilling Techniques

基　　金：中国石油化工股份有限公司科技开发项目(编号:P04054)部分研究成果

摘　　要：为深入了解高压分层挤注过程中,井下液体温度、压力以及管柱承受的轴向力和伸缩蠕动等状态参数,研制了井下管柱状态检测系统。介绍了该系统的基本功能,着重分析了井下测试短节的机械结构及布局,总结了井下管柱的内外筒强度设计及校核方法;简要介绍了应变片贴片处弹性体的设计原则,并指出了高温高压条件下如何分析评价弹性体的结构强度和应力水平,以及热应力、流体压力对拉压力测量的影响;提出了摆动式机械接触滚轮测量管柱蠕动位移的方法,论述了位移测试组件的基本原理及结构。The downhole string state measurement system has been developed in order to understand the parameters such as, downhole fluid temperature, pressure, axial force and deformation, etc in the process Of injecting high-pressure water into wells. This paper introduces the basis function of this system; focuses on its mechanical structure and layout of measurement system; and summarizes the design and verification method for inner and outer sleeve of downhole string. This paper briefly introduces design principles of elastomer in the location where strain gauge is attached and presents how to analyze the impacts of structure strength, stress, thermal stress and fluid pressure on measurement of axial force at high temperature ＆ high pressure. A method to measure the string creep using swing mechanical roller was proposed. The basic principle and structure of displacement measurement mechanism is discussed in this paper.

关 键 词：管柱 测试 短节 结构设计 位移 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]