The working principle of the mud pump

Working principle of mud pump
    Mud pump is in the drilling process, to the drilling of mud or water and other washing fluid machinery. Mud pumps are an important part of drilling machinery and equipment. Its main role is to drill in the process of drilling with the drill bit into the downhole, play a cooling bit, cleaning the drilling tool, fixed wall, driven drilling, and drilling back to the ground after the role of cuttings. In the commonly used circular drilling, the mud pump is the surface of the rinse medium - water, mud or polymer rinse liquid under a certain pressure, through the high pressure hose, faucet and drill rod center hole directly to the bottom of the drill to achieve Cooling the drill bit, the cutting down the cuttings and transport to the surface of the purpose. Commonly used mud pump is piston or plunger type, driven by the power machine crankshaft crankshaft crankshaft through the cross head and then drive the piston or plunger in the pump cylinder to do reciprocating motion. In the inhalation and discharge valve under the alternating effect, to achieve the purpose of pressure and circulation rinse solution.
  The two main parameters of mud pump performance are displacement and pressure. The displacement is calculated at several liters per minute, which is related to the diameter of the borehole and the required flushing fluid from the bottom of the hole, ie, the larger the pore size is, the greater the required displacement. Requires the return of the rinse liquid to cut the drill bit down the cuttings, rock powder and timely washed away from the bottom of the hole, and reliably carried to the surface. Geological core drilling, the general return speed of 0.4 to 1 m / min or so. The pressure of the pump depends on the depth of the borehole, the resistance of the passage through which the rinsing solution passes, and the nature of the flushing fluid being conveyed. The deeper the drilling, the greater the resistance of the pipeline, the higher the pressure required. With the drilling diameter, depth changes, the requirements of the pump displacement can be adjusted at any time. In the pump mechanism is equipped with gearbox or hydraulic motor to adjust its speed, in order to achieve the purpose of changing the displacement. In order to accurately grasp the pump pressure and displacement changes, the mud pump to install the flow meter and pressure gauge, at any time so that the drilling staff to understand the operation of the pump, while the pressure changes through the hole to determine whether the normal condition to prevent the occurrence of hole accident

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