Spiral Drill Collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. TIANHE brand spiral drill collars are manufactured....

Operative Standards £  º API Spec 7
General Description:
1. Drill Bit Type
( 1) Classify according to structure and working principle: Drag Bit, Cone Bit, Diamond Bit ( including PDC....

Various mud pump parts including extension Rod, fluid end module, Liner, Piston assembly , Piston rod, valve assembly
Name Type
Fluid End Module F-500
Fluid End Module F-800
Fluid....

Various downhole motor assemblies for well size 3 1/ 2Â ¡ Ã ¥ Â ¡ Â « 17 1/ 4Â ¡ Ã ¥ with the following main dimension specifications. To see specific parameters, pls download the PDF file.

2....