Sucker Rod Brief Introduction The sucker rod is a steel rod that used to make up the mechanical assembly between the surface and downhole components of a rod pumping system. The product conforms to API Specification 11B (Oil extraction rod Standard) and other related...

Spiral Drill Collar With Elevator Groove And Slip Groove Spiral drill collar,drill collar,drilling collar Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out. The technical...

Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressur Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. spiral drill collars are...

1.NC-70 Spiral drill collar. 2.O.D:3 1/8"-11",I.D:1 1/2"-3". 3.NC-23~NC70 The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large...

Spiral Drill Collar With Elevator Groove And Slip Groove The short drill collar produced by our company is made of special alloy steel and is accordant with mechanical property of drill collars. Besides, the connection of the drill collar is accordant with API. It is mainly used...

1.Heavy Weight Drill Pipe, 2.drilling pipe, 3.API drill pipe The wall thickness of heavy weight drill pipe is between drill pipe and drill collar,its structure is simliar with drill pipe.It is made from premium alloyed steel.Its both tool joints and middle upset are welded...