焊管2024，Vol.47Issue(12)：68-74,7.DOI:10.19291/j.cnki.1001-3938.2024.12.010
125V钢级高强度高韧性耐热SEW套管开发
Development of 125V High Strength High Toughness and Heat Resistant SEW Casing
摘要
Abstract
In order to meet the demand for high-strength,high toughness,and heat-resistant casing in the exploitation of deep unconventional oil and gas resources,a Cr-Mo-Nb-V-Ti microalloyed hot-rolled coil was designed.By using the combination of high frequency welding+hot stretch reducing+full body quenching and tempering heat treatment,a high strength,high toughness and heat resistant SEW casing of 125V steel grade with Φ139.7 mm×12.7 mm has been developed.The results show that the weld seam of the casing has good uniformity with the base material,and the strength and toughness match is excellent.The average yield strength reaches 956 MPa,the average tensile strength is above 1 006 MPa,the average elongation reaches 24%,and the yield strength at 300℃decreases by 11.7%.The average transverse impact energy of the pipe at 0℃reaches 90 J,and the average anti-extrusion strength of the pipe body is 190.33 MPa,which is better than the required value of API TR 5C3 standard by more than 33%.It can meet the requirements of on-site operations.关键词
125V钢级/强韧性匹配/SEW套管/调质热处理Key words
125V steel grade/strength and toughness match/SEW casing/quenched and tempered heat treatment分类
能源科技引用本文复制引用
陈浩明,何石磊,李远征,苑清英,李周波,乔凌云,杨喜峰,张银亮..125V钢级高强度高韧性耐热SEW套管开发[J].焊管,2024,47(12):68-74,7.基金项目
陕西省重点研发项目"多段体积压裂井用高性能SEW管材及螺纹连接关键技术研究"(项目编号2023-YBGY-309) （项目编号2023-YBGY-309）
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）
