φ73mm(S135)直连型钻杆的研制及应用  

Development and application of φ73 mm (S135) direct-connected drill pipe

作　　者：李飞[1] 胡记生[1] 李玉民[1] 韩霖[1] 王晓[1] 陈绪祥[1] 王金志[1] 张琦[1] 陈四清[1] 

机构地区：[1]中原石油勘探局钻井管具工程处

出　　处：《石油机械》2011年第1期57-59,97,共3页China Petroleum Machinery

摘　　要：为解决小井眼钻井、小井眼水平井钻井和φ139.7 mm套管开窗侧钻井中输送测井仪器和钻水泥塞的技术难题,研制了φ73 mm(S135)直连型钻杆。其钻杆接头与管体一体化,不需要摩擦焊接,通过减小API规范φ73 mm钻杆的接头外径和设计新型钻杆螺纹,增大了接头外径与井眼的环空间隙,满足在深井中输送测井仪器和钻水泥塞施工的要求,保证了井下安全。现场应用情况表明,该钻杆抗拉、抗扭和密封性能可靠,机械钻速明显提高,钻井施工更加顺利。To solve the technological problem of transporting logging devices and drilling out in small-hole drilling, small-hole directional well drilling and φ139.7 mm casing window-cutting sidetracking,φ73 mm (S135) direct-connected drill pipe was developed. The drill pipe sub was integrated with the pipe body, with no need of frictional welding. By reducing the API specification of the outer diameter of the sub ofφ73 mm (S135) direct-connected drill pipe and designing the new-type drill pipe thread, the sub’s outer diameter and the annular clearance of the borehole was increased, satisfying the requirement of transporting logging devices and drilling out in deep wells and ensuring down-hole safety. The field application showed that the tensile, torsional and sealing performance of the drill pipe was satisfactory.

关 键 词：双台肩设计 NT28螺纹 直连型钻杆 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]