页岩气开发用高强高韧套管设计及适用性研究  

Design and Applicability Research of High Strength and Toughness Casing for Shale Gas Service

作　　者：董晓明[1] 张忠铧[1] 罗蒙[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900

出　　处：《石油管材与仪器》2017年第1期47-51,共5页Petroleum Tubular Goods & Instruments

摘　　要：针对川渝地区页岩气开采特点及生产套管在下入、固井、压裂等工艺下的服役条件,设计出宝钢页岩气开采用高强度高韧性套管及其气密封螺纹接头。对其强韧性、微观组织和抗挤毁性能进行了测试,结果表明材料韧性稳定达到屈服强度10%以上,冲击功的各向异性显著降低,同时还模拟页岩气生产套管不同位置及不同施工阶段所受到的复合载荷对套管的适用性进行了研究,用于支撑川渝地区页岩气井生产套管的选用。Based on the shale gas exploitation characteristics and the working conditions of production casing during tripping,cementing and fracturing process in Sichuan-Chongqing area,the high strength and toughness casing and premium connection are designed. The mechanical properties,microstructure and collapse resistent property are tested,finding that the transverse Charpy impact value of BG125 V casing at 0℃ surpasses the value of 10% yield strength,and the toughness anisotropy decreases obviously. Furthermore,the applicability of casing is researched by simulating the combined loads on casing at different well positions and in different construction stages,supporting the selection of production casing for shale gas service in Sichuan-Chongqing region.

关 键 词：套管 页岩气 韧性 特殊螺纹接头 

分 类 号：TE931[石油与天然气工程—石油机械设备]