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Mud pump in the drilling process needs attention

Mud pump is in the drilling process, to the drilling mud or water and other washing fluid transport machinery. Mud pump is an important part of drilling machinery and equipment. Its main role is in the drilling process with the drill bit into the mud drilling, plays a cooling drill, cleaning drilling tools, fixing the wall, drive drilling, and drilling after cuttings back to the ground role.
In common positive circulation drilling, the mud pump is the surface rinse medium - water, mud or polymer flushing fluid under pressure, through the high-pressure hose, faucet and drill string center hole straight to the bottom of the drill in order to achieve Cooling the drill bit, cutting down the cuttings and transported to the surface of the purpose.
Commonly used slurry pump is piston or plunger type, driven by the power pump crankshaft rotation, the crankshaft through the crosshead and then drive the piston or plunger reciprocating motion in the pump cylinder. In the suction and discharge valve under the action of alternating pressure to achieve the purpose of washing and circulating fluid.
Mud pump is a kind of pump products, its performance in the two main parameters is the displacement and pressure, the displacement is a number of liters per minute discharge calculation, and drilling diameter and the required flushing fluid from the bottom of the hole Back velocity, that is, the larger the pore size, the greater the displacement required. Requiring the rinse fluid back to the speed of the cuttings to cut down the cuttings ﹑ rock powder washed away in time, and be sure to carry to the surface. Geological core drilling, the general back to the speed of 0.4 to 1 m / min or so.
The pressure of the mud pump depends on the depth of the hole, the resistance of the channel through which the flushing fluid passes and the nature of the rinsing liquid. Drilling deeper, the greater the pipe resistance, the higher the pressure required. With the drill diameter, depth changes, the pump displacement can also be adjusted at any time. In the pump mechanism is equipped with a gearbox or hydraulic motor to adjust its speed, in order to achieve the purpose of changing the displacement.
Finally, in order to accurately grasp the pump pressure and displacement changes in the mud pump to be installed on the flowmeter and pressure gauge at any time to understand the operation of the pump drilling, Within the accident.

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