Ф73 mm摩擦焊接式全钛合金钻杆的研制与应用

R&D and Application ofФ73 mm Friction-welded All Titanium Alloy Drill Pipe

叙述了Φ73 mm摩擦焊接式全钛合金钻杆的研发过程,详细介绍了其管体镦锻制造技术以及产品使用效果。通过特殊的管体镦锻技术以及螺纹车削技术,开发出了性能稳定、使用寿命长的Φ73 mm摩擦焊接式全钛合金钻杆。该摩擦焊接式全钛合金钻杆在塔河油田T4326CH2超短半径水平井已成功应用,最高造斜曲率达到55°/30 m,创下西北工区井眼曲率最大、侧钻进尺最少、侧钻时间最短3项纪录。

Elaborated here in the article is the R&D process of theФ73 mm friction-welded all titanium alloy drill pipe.Also described in detail are the forging technology for the pipe body and the application effectiveness of the said drill pipe.Thanks to a certain special forging process for the pipe body and threading process,theФ73 mm friction-welded all titanium alloy pipe featuring consistent performance and long service life is developed.The drill pipe has been successfully used in the T4326CH2 ultra short radius horizontal well of Tahe Oild Field,resulting in a highest build-up rate up to 55°/30 m,which has set three records,i.e.,the first largest well borehole curvature,the least side drilling footage and the shortest side drilling time in the Northwest China Work Area.