Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from diffirential pressure.
The drill collars are manufactired strictly according to API Spec7-1 and NS-1 Standard , Alsp Norsok Spec.
We China Vigor Drilling is an integral Oil service group with professional expertise in supplying with the High Quality Down-hole Drilling products, Fishing tools , Pipe Handling and Lifting Equipment and Solid control equipment. Our main products are as following:
Drilling Tools: Stabilizer, Drill Collar, Drill Pipe, HWDP,Roller Reamer,Kelly Valve, Hole Opener,OCTG, Drilling Jar,Pup Joints, Crossover, ubs as well as other Drilling stem accessories which meet both API spec. and NS-1 standard.
Fishing Tools: Bown 150 Overshot and Spear, Fishing Magnet,Taper Tap, Junk Basket,Washpipe, etc.
Speciality: Non-magnetic material available for Drill Collar, Stabilizer, HWDP and other drilling string components.
NS-1 Standard applied for NorthSea field.
Premium connections can be done as requested.
L8013Cr Casing/Tubing with premium connection origin from Sumitoma ex-stock
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