slurry pump in the drilling process needs attention

slurry pump is in the drilling process, to the drilling mud or water and other washing fluid transport machinery. slurry pump is an important part of drilling machinery and equipment. Its main role is in the drilling process with the drill bit into the underground drilling mud, plays a cooling drill, cleaning drilling tools, fixing the wall, drive drilling, drilling and cuttings back to the ground after the role.
In common positive circulation drilling, the slurry 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.
slurry 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 in time to wash away the bottom of the hole, and to carry to the surface reliably. Geological core drilling, the general back to the speed of 0.4 to 1 m / min or so.
The slurry pump pressure depends on the depth of the hole, the washing fluid through the channel resistance and the nature of the delivery of the washing fluid. 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 slurry pump to be installed on the flowmeter and pressure gauge, at any time to understand the operation of drilling the pump, and by changing the pressure to determine whether the normal situation in the hole to prevent the occurrence of holes Within the accident.