两种典型膨胀管膨胀工艺技术研究  

RESEARCH ON TWO TYPICAL EXPANSION TECHNIQUES IN EXPANDABLE CASING TECHNOLOGY

作　　者：杨斌[1] 练章华[1] 叶顶鹏[2] 姚辉前 史勇[4] 

机构地区：[1]油气藏地质及开发工程国家重点实验室.西南石油大学 [2]中石化西南油气田分公司管具中心 [3]德州石油钻井研究所 [4]克拉玛依职业技术学院

出　　处：《钻采工艺》2008年第4期88-90,93,共4页Drilling & Production Technology

基　　金：国家教育部科学技术研究重点项目(205135);四川省杰出青年基金项目(03ZQ026-044);国家自然科学基金项目(50074025)资助

摘　　要：膨胀管技术目前已广泛应用于钻井、完井、修井和采油等各石油工程领域,膨胀工艺是其关键技术之一。针对两种最典型的"自下而上"和"自上而下"膨胀工艺,利用弹塑性有限元法建立了膨胀管膨胀过程的三维非线性接触问题力学模型,直观地模拟了不同接触条件下的膨胀过程。对比分析得到两种膨胀工艺下摩擦系数对膨胀管的轴向位移、膨胀力、壁厚减薄量、残余应力以及膨胀过程中的接触应力的影响,所得结论为膨胀管膨胀工艺的设计提供了理论依据。Expandable casing technology has been widely used in drilling, completion, workover and production, etc. and expansion technique is one of key technology. In this paper, aiming at the two most typical expanding techniques 'BOTTOM-UP' and 'TOP-DOWN', the mechanics model of 3-D non-linear contact during the expansion of expandable casing was established by using elastic-plastic finite-element method to visually simulate the expansion under different contact conditions. The effect of friction factor on total axial displacement, expansion force, wall thickness reduction, residual stress and contact stress during the expansion was obtained by comparison analysis of the two expansion techniques. The results provided theoretical reference for the design of expansion technique.

关 键 词：膨胀套管 有限元 工艺技术研究 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]