海上完井封隔器胶筒设计及密封性能分析  

Design and Sealing Performance Analysis of the Offshore Completion Packer Rubber Sleeve

作　　者：鞠少栋 马认琦 洪秀玫 董健 刘传刚 

机构地区：[1]中海油能源发展工程技术公司

出　　处：《石油机械》2015年第6期46-49,共4页China Petroleum Machinery

基　　金：国家科技重大专项子课题"完井防砂工具系列化及现场应用"(2011ZX05057-002-004);海油发展技术开发项目"钻完井工具辅助设计系统开发"(HFKJ-GJ2014005);海油发展英才计划项目"井下封隔器设计分析模块开发"

摘　　要：建立了海上完井封隔器胶筒尺寸设计与接触压力计算理论模型,同时利用ANSYS软件建立了胶筒密封轴对称有限元模型,基于橡胶材料本构模型确定了材料常数,带入有限元模型分析胶筒的密封性能与强度是否满足要求,并对比研究胶筒理论计算结果与有限元分析结果。分析结果表明,坐封阶段胶筒最大位移发生在双密封腔位置,最大接触压力发生在规环挤压胶筒处;工作阶段胶筒最大位移发生在胶筒挤入规环与套管的环形空间位置,位移最大值为7.1 mm,胶筒与套管最大接触压力为40.1 MPa。胶筒理论计算结果与有限元分析结果对比表明,坐封阶段和工作阶段胶筒与套管最大接触压力和胶筒压缩行程相差不大,说明2种方法的计算结果比较接近。The theoretical model for completion packer rubber sleeve size design and contact pressure calcula- tion is established. ANSYS software is used to establish the axisymmetric finite element model of the rubber sleeve sealing. The material constants are determined based on the rubber material constitutive model, and then integrated into finite element model to analyze the sealing performance and strength analysis of the rubber sleeve. Comparative study is also conducted on the theoretical calculations and finite element analysis. The results show that, during packer setting, the maximum displacement of the rubber sleeve occurs in double sealing position, and the maxi- mum contact pressure occurs where ring extrusion rubber sleeve. In working condition, the maximum displacement of rubber sleeve occurs where the rubber sleeve sequence into the annulus between gauge ring and casing, with the maximum displacement of 7.1 mm and the maximum contact pressure of 40. 1 MPa. The comparison between the theoretical results and the finite element analysis results show that the maximum contact pressure of rubber sleeve and casing and the rubber sleeve compression stroke during packer setting have little differences when in working condition, indicating that the results of the two methods are close.

关 键 词：完井封隔器 胶筒 密封性能 接触压力 压缩行程 

分 类 号：TE925[石油与天然气工程—石油机械设备]