Drill pipe 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 centralize
Non-Magnetic Drill Collar Non-Magnetic Drill Collars are made of low magnetic stainless alloy steel by combining a proprietary chemical analysis and a hammer forging process.
Spiral Drill Collar With Elevator Groove And Slip Elevator groove and slip groove made on the box thread face of normal drill collar or sprial drill collar can be used as lifting sub and safty slip w
Integral Heavy Weight Drill Pipe The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. Its both tool joints
Integral Spiral Heavy Weight Drill Pipe Integral spiral heavy weight drill pipe is extend thecentral upset of heavy weight drill pipe and cut spiral groove on it
Drill collar 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 centralize
Spiral Drill Collar Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking form differential pressure. Spiral drill collars
Drill tools lifting sub Drill tool lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. Drill tool li
Downhole Motor The downhole motor of our BoBi with "Chenlong" brand have 7.0Mpa and 14.0Mpa two different bit nozzle pressure loss, also have different an
