固井水泥环缺陷与套管承载能力关系研究  

Research on Relationship between Sheath Defect of Well Cementing and Bearing Capacity of Casing

作　　者：曹畅[1] 周香玲[1] 石立华[1] 

机构地区：[1]长江大学石油工程学院,荆州434023

出　　处：《混凝土与水泥制品》2011年第12期32-34,共3页China Concrete and Cement Products

摘　　要：固井是油水井生产之前的一项重要工序,固井质量的好坏对井的使用寿命有着直接的影响。建立了水泥环缺少30°、60°、90°等角度的井筒平面应变有限元模型,并对固井水泥环缺陷引起的套管应力变化进行了仿真模拟分析,进而明确了水泥环缺陷程度与套管承载能力的关系。Well cementating is an important process before the production of oil and water Wells, and its quality of the cementing has a direct impact on well production. An FEM model of wellbore plane strain of cement sheath with lack of 30° ,60°,90° and so on were developed and the simulation analysis of casing pipe stress caused by cement sheath damage was investigated,which makes the relationship between the damage degree of cement sheath and the bearing capacity of casing more clear.

关 键 词：水泥环缺陷 Von Mises等效应力 应力集中系数 有限元 

分 类 号：TU528[建筑科学—建筑技术科学]