焊管2025，Vol.48Issue(5)：67-73,7.DOI:10.19291/j.cnki.1001-3938.2025.05.009
Φ177.8 mm BJC-Ⅱ型高气密封特殊螺纹接头性能研究
Performance Research on Φ177.8 mm BJC-Ⅱ High Gas Sealing Premium Thread Joint
摘要
Abstract
In order to meet the demand of premium thread in the exploration and development of unconventional oil and gas wells in China,a premium threaded used for Φ177.8 mm casing was designed.The premium thread connection performance was simulated analyzed by finite element analysis method,and full scale performance evaluation tests were carried out according to the requirement of CAL Ⅳ standard as specified in API RP 5C5:2017,leading to the development of BJC-Ⅱ high gas sealing premium thread for Φ177.8 mm casing.The results indicate that the designed premium thread has excellent gas sealing performance under the condition of tension,compression,internal pressure,external pressure,bending and 180℃high temperature load.The tensile efficiency,internal pressure efficiency,external pressure efficiency,and compression efficiency of the premium thread reach to 100%of the casing body,which provides product guarantee for the exploration and development of unconventional oil and gas wells.关键词
油套管/特殊螺纹接头/螺纹气密封性/有限元分析/性能评价Key words
casing and tubing/premium thread joint/gas sealing performance/finite element analysis/performance evaluation分类
石油、天然气工程引用本文复制引用
汪强,唐家睿,苑清英,晁利宁,屈国栋,王巍..Φ177.8 mm BJC-Ⅱ型高气密封特殊螺纹接头性能研究[J].焊管,2025,48(5):67-73,7.基金项目
中国石油天然气集团科技研发项目"提高页岩气井抗套损能力的新型套管研发"(项目编号2020B-4020). （项目编号2020B-4020）
