摘要
将盐膏层作为线性Maxwell固体 ,建立了平面应变问题的粘弹性力学模型 ,通过实测江汉油田王 78- 1井不同时段内的井径变化 ,借助模型辨识理论 ,运用有限元方法 ,研究了盐膏层蠕变与时间的关系 ,套管在均匀、非均匀载荷作用下的应力分布 ,套管制造缺陷 (不圆、不匀度 )对套管应力的影响。
Regarding evaporate beds as linear Maxwell solid,the mechanical model of viscoelastic property is built for plain strain.Using model identifying theory and finite element method,with real surveying the caliper variation in different periods for well Wang 78-1 of Jianghan oil field,the relationship between evaporate bed creep and time,the stress distribution of the casing under uniform and non uniform load,and the influence of casing defects (out of roundness and in homogeneity) on the casing stress are studied.The results provide quantitative reference for engineering practice and have high value for expansion and application.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2003年第6期88-90,共3页
Natural Gas Industry
基金
中国石化集团公司"九五"科技攻关项目"提高老区调整井固井质量 (江汉部分 )"研究内容 编号 :ZKZ0 3990 15
关键词
油气田
测井
盐膏层
蠕变
粘弹性
固体模型
有限元分析
Evaporate bed,Background equation,Casing,Viscoelastic property,Model,Finite element
