石油钻采工艺2011，Vol.33Issue(5)：46-48,3.
油管套管抗内压强度计算研究
Study on internal pressure strength prediction for casing and tubing
摘要
Abstract
For wells with high pressure, high temperature, and high H2S, once the tubing or casing burst into failure, the gas may cross between tubing and casing, even the sulfur-containing gas may blow out to the ground, so the harm is self-evident. Therefore, an accurate prediction of the internal pressure strength is essential in tubing and casing design process. For high H2S gas wells, the API Bulletin 5C3 formular cannot satisfy with the design criteria, and the burst model for capped-end conditions has been provided in ISO 10400, but some predictions by ISO burst model exceeds the actual burst strength. According to the significant influence of yield-to-tensile strength ratio Y/T on failure behavior of tubing or casing, a new internal pressure strength model is presented for casing and tubing with high calculation accuracy. The comparison work show that the results calculated by the new model essentially coincide with test burst data, which provides a powerful reference for optimizing strength design for casing and tubing.关键词
两端堵口/油管套管/爆裂/设计/研究Key words
capped-end conditions/ casing and tubing/ burst/ design/ study分类
能源科技引用本文复制引用
孙永兴,林元华,杨晓峰,杨博仲,余来红,齐玉..油管套管抗内压强度计算研究[J].石油钻采工艺,2011,33(5):46-48,3.基金项目
新世纪优秀人才支持计划"高含H,S气藏完井管柱设计及其可靠性研究"(编号:NCET-08-0907) （编号:NCET-08-0907）
国家自然科学基金"基于数值模拟的复杂地层地应力场反演研究"(批准号:E040103). （批准号:E040103）
