In the operation of using rotary drilling method to drill oil and natural gas wells, the drilling reciprocating pump is used to pump drilling fluid, i.e. mud, to circulate and flush the well. During drilling, the mud pump injects mud into the wellbore along with the drill bit, playing a role in cooling the drill bit, cleaning drilling tools, fixing the wellbore wall, driving drilling, and bringing rock cuttings back to the surface.So drilling mud pumps and workover mud pumps are usually referred to as mud pumps, which are the core components of drilling and workover operations.

In commonly used positive circulation drilling, the mud pump sends the surface flushing medium – clear water, mud, or polymer flushing fluid – through a high-pressure hose, faucet, and the center hole of the drill string under a certain pressure to the low end of the drill bit, in order to cool the drill bit, eliminate the cut rock cuttings, and transport them to the surface. The commonly used mud pump is a piston or plunger type, which is driven by a power machine to rotate the crankshaft of the pump. The crankshaft then drives the piston or plunger through the crosshead to perform reciprocating motion in the pump cylinder. Under the alternating action of the suction and discharge valves, achieve the purpose of compression and circulating flushing.

The mud pump produced by Sanjack adopts a three cylinder single column plug structure, consisting of a power end, a hydraulic end, and a lubrication system,mud pump pistons and valves. The power end reduction mechanism adopts an external gearbox type, and the hydraulic end seal adopts a packing seal, which can prevent plunger leakage by tightening the packing. The hydraulic end has been modified and can be used for transporting corrosive media. The power end lubrication comes with a lubricating oil pump, and the hydraulic end lubrication adopts pneumatic lubrication.

Sanjack mud pump include Electric Mud Pump and vertical mud pump, can be widely used for oil well operations and can work with well washing and wax removal trucks, workover machines, drilling machines, and fracturing equipment.

All Mud pumps belong to reciprocating pumps, and the outstanding advantages of reciprocating pumps are: high pump pressure, pump pressure not changing with flow (displacement), high pump efficiency, and not changing with flow. They can transport liquids with high viscosity, high sand content, and abrasive solid particles.