Burst strength prediction of OCTG
With high pressure high temperature (HPHT) oil & gas wells increasing,oil country tubular goods (OCTG) service environment tends to be critical complex.In these critical oil & gas wells,when burst failures of high strength service grades for downhole applications once take place,the H2S gas may be run freely between tubing and intermediate casing,intermediate casing and surface casing,even the sulfur-containing gases spring ground,the harm is self-evident.Therefore,an accurate prediction of the burst strength,which is defined as the maximum value of internal pressure required to cause the steel casing to fail,is a very important consideration in the casing design process.The burst model has been provided in ISO/TR10400:2007,but almost half of the predictionts exceed the test burst strength.So this paper develops a new model that incorporates the influence of yield-to-tensile strength ratio on burst failure of casing and tubing without defects.
oil country tubular goods (OCTG) capped-end condition fracture model sour gas well
Yongxing Sun Yuanhua Lin Binggang Yi Liexiang Han Xiaofeng Yang
CCDC Drilling & Production Technology Research Institute,Guanghan 618300,China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(outhwest Petroleum University Chongqiong gas field engineering technology and supervision department,Chongqing,Chongqing,400021 CCDC science and technology department,Chengdu,Sichuan,610051,China
国际会议
西安
英文
1173-1176
2012-06-12（万方平台首次上网日期，不代表论文的发表时间）