Strain-Based Casing Design for Cyclic-Steam-Stimulation Wells

被引：8

作者：

Han, Lihong ^{[1
,2
]}

Wang, Hang ^{[1
,2
]}

Wang, Jianjun ^{[1
,2
]}

Xie, Bin ^{[3
]}

Tian, Zhihua ^{[3
]}

Wu, Xingru ^{[4
]}

机构：

[1] CNPC, Tubular Goods Res Inst, Beijing, Peoples R China

[2] State Key Lab Performance & Struct Safety Petr Tu, Beijing, Peoples R China

[3] CNPC, Xinjiang Oilfield Co, Beijing, Peoples R China

[4] Univ Oklahoma, Norman, OK 73019 USA

来源：

SPE PRODUCTION & OPERATIONS | 2018年 / 33卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.2118/180703-PA

中图分类号：

TE [石油、天然气工业];

学科分类号：

0820 ;

摘要：

An oil field in Xinjiang, China, experienced a casing failure rate of 15 to 30% in thermal wells, mainly relating to inadequate protocols of casing design. This paper presents a new strain-based casing-design method. New material parameters are proposed to build safety-evaluation principles throughout the service life of a thermal well. In addition, a gas-tight thread joint is applied to prevent steam leakage that otherwise would cause a large transversal stress between different formations, and result in slip deformation of the casing string. Field practices have shown that the new method's fitness works better for thermal wells than previously used methods.

引用

页码：409 / 418

页数：10

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