超深井蠕变地层套管强度及其影响因素研究  

Research on the Ultra Deep Well Creep Stratum Casing Strength and its Influence Factors

作　　者：廖结安[1] 王旭峰[1] 

机构地区：[1]塔里木大学机械电气化工程学院,新疆阿拉尔843300

出　　处：《塔里木大学学报》2012年第1期15-20,共6页Journal of Tarim University

基　　金：塔里木大学校长基金项目(TDZKSS1009)

摘　　要：由于盐膏层岩石具有蠕变特性,导致盐膏层钻井、完井工艺复杂,造成井下套管损坏率高;本文采用岩石模拟伯格斯模型,研究了非均匀地应力下蠕变地层套管径向应力、最大等效应力和套管安全系数的分布规律,并在此基础上系统地研究了地层弹性模量和泊松比、水泥环模量和泊松比、非均匀载荷系数、内压等工程和地质因素对套管应力和载荷的影响规律,为蠕变地层中套管强度计算提供理论依据。Because of the creep characteristics of salt gypsum layers rock, the technology of salt gypsum layers drilling and well completion is complex which cause downhole casing damage rate is high. simulated boggs model using rock , this paper research the distri- bution rule of creep stratum casing radial stress, maximum equivalent stress and casing safety coefficient under non - uniform crustal stress. On this basis, the project of elastic modulus and poisson ratio, cement ring modulus and poisson, non - uniform load coefficient, internal pressure and the influence law of geological factors are researched how to affect casing stress and load. The results can provide a theory basis to casing strength calculation in creep stratum.

关 键 词：伯格斯模型 蠕变地层 套管强度 超深井 粘弹性分析 

分 类 号：TE931[石油与天然气工程—石油机械设备]