Changeable sleeve stabilizer has the functions of whole screw stabilizer.It can be suitable for different well diameters by changing different bearing sleeves, and also be extended the using life by replacing the same kind bearing sleeve.
The Integral Short Drill Rod series are made from integral bars of 40CrMnMo modified alloy steel heat-treated to drill collar specifications.They are mainly used for oil field to make the connection of drilling strings.
The Circulating Sub is a dedicated tool for circulating drilling fluid when or after running in casing.As required, there are casing threads circulating sub and union threads circulating sub available.
The Non-rotary Safety Joint (see fig.) consists of body, non-rotary sleeve, retainer ring and screws.The interface between integral body and non-rotary sleeve is coated hardness chrome for corrosion and abrasion resistance.
Type H safety joint is a subsurface safety device consisting of two parts.The male end of the safety joint is designed with H-shaped sliding way.The pins are used to connect the male joint with the female joint to make them integration.
The Pin Drive Roller Kelly Bushing is made up of top cap, bottom seat, shaft, roller, floating ring, transmission pins, fixed bolts, oil cup, etc.1.Pulling out or feeding off string can be done while rotating; 2.
The RCR Centralizer consists of a rigid body, on which machined five spiral blades and streamlined diversion trenches between blades.On every spiral blade, there are three or four rollers made from modified alloy steel fully heat treated.