万米井用超高强高韧套管的研制及组织表征  

Development and structure characterization of ultra‑high strength and toughness casing for myriametric well

作　　者：高展[1,2,3] 董晓明 张忠铧[1,3] GAO Zhan;DONG Xiaoming;ZHANG Zhonghua(Baosteel Research Institute,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Oil and Gas Equipment,Shanghai 201900,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院,上海201900 [2]上海交通大学材料科学与工程学院,上海200240 [3]油气钻采输送装备全国重点实验室,上海201900

出　　处：《钻探工程》2024年第4期1-6,共6页Drilling Engineering

基　　金：国家重点研发计划“深地油气资源勘探用高强韧钢管材及应用技术研究”(编号:2023YFB3711700,2023YFB3711702)。

摘　　要：根据万米特深井超高温超高压工况需求,开展超高强高韧套管合金化技术和制造工艺研究,开发出具有良好韧性、高温强度、抗挤毁和抗延迟断裂性能的BG155V超高强高韧套管,批量试制的性能检测结果表明屈服强度达到1100 MPa以上,0℃横向夏比冲击功平均值达到名义屈服强度的10%。对套管不同服役温度下强度、低温韧性以及微观组织进行了分析,发现采用热轧后控制冷却工艺的管体晶粒度达到11级,通过细小的晶粒保证材料良好韧性和抗延迟断裂性能,提升了万米特深井油气资源开发用套管安全服役的可靠性。According to the construction requirements of myriametric extra‑deep well,the BG155V casing with good toughness,high‑temperature strength,collapse resistance and delayed fracture resistance is developed on the basis of alloying technology and manufacture process optimization.The test results of batch production showed that the yield strength reaches over 1100 MPa,and the transverse Charpy impact energy at 0℃reached 10%of the nominal yield strength,and the strength and low temperature toughness and microstructure of casing under different service temperatures were analyzed.It was found that the grain size level of the casing with controlled cooling process after hot rolling reaches up to 11.The fine grains ensure good toughness and delayed fracture resistance of the material,which improves the reliability of the casing in the myriametric extra‑deep wells for the development of oil and gas resource.

关 键 词：套管 高温强度 高韧性 晶粒度 抗延迟断裂 万米井 特深井 

分 类 号：TE921[石油与天然气工程—石油机械设备] P634.4[天文地球—地质矿产勘探]