Thepolished bore receptacle liner hangeris divided into two types: slip type and mandrel type. The slip type bush hanger is also divided into WD type slip hanger, cg-21 type slip hanger, cg-22 type slip hanger and cg-29 …

Since the use of triple helix stabilizers in China's oilfields and gas fields in 1983, their structures have basically remained unchanged. Most of the existing three screw stabilizers use a certain number of cemente…

The pump is mainly composed of four parts: barrel, plunger, fixed valve and traveling valve. The pump barrel is a cylinder liner, which is equipped with a plunger with a traveling valve. The plunger and the pump barrel f…

Spear fishing tools can be divided into three categories according to the structural characteristics of the tools: non retractable slide spear, coupling spear and retractable spear. Among them, the slide block bailing sp…

Non-magnetic drill collarThe structure ofnon mag drill collarsare as same as that of ordinary drill collars, but their chemical composition and mechanical features are different from ordinary drill collars. Non-magnetic …

Many enterprise users report that the maintenance and management of mud pumps are not systematical and perfect, therefore, how can we perform scientific maintenance of mud pumps? In fact, during the operation of the mud …

The breakdown of the choke valve and the troubleshooting methods:1. The malfunction of the flow regulation:The reason for the malfunction of the flow regulation could be the failure of the seal, the failure of the spring…

The characteristics of aluminum drill pipe are as follows:Significantly reduce hook loadThe density of aluminum drill pipe in air is less than 1/2 of that of steel drill pipe. In drilling, aluminum drill pipe shows good …

Classification of beam pumping unitAccording to different balance methods, beam pumping units can be divided into beam balance type, crank balance type, composite balance type and pneumatic balance type.Beam pumping unit…

Non-magnetic type:it is made of stainless alloy steel with low permeability, and the inner and outer diameters of cross section of pipe body are circular.The non-magnetic drill collar is mainly used for monitoring in the…

Oil casing pipeis an important equipment for oil drilling. Including the drill pipe, core barrel and casing pipe, drill collar and steel pipe for small diameter drilling.Specification and appearance quality of oil casing…

Thehorizontal piston pumphas a four-speed gear transmission and a total of eight flow rates are available.The pumps can be used as the matching tool for hydraulic percussion drilling within 1000 meters, screw drilling an…

As for thechoke valve function,this kind of valves can control the flow of fluid. Generally speaking, when the pressure difference of the chock valve is constant, the opening size of the chock valves will affect the chan…

Applications of frac trees:According to somebig oil field companies, when the oil well outputs reach a certain stage, the productivity and permeability will decrease. In order to improve the oil drainage capacity and inc…