Drilling pump

DRILLING PUMP (EN: boring pump, drilling pump; DE: Spulpumpe, Bohrpumpe; FR: pompe de forage, pompe de sondage; ES: bomba de sondeo; RU: буровой насос) is the hydraulic machine for the injection of the washing liquid into the borehole. This pump includes the hydraulic part and the mover. The hydraulic part comprises 2 or 3 hydraulic boxes (depending on the quantity of the working cylinders of the pump), which are unified by the sucking and injecting collectors. At the entrance into the sucking collector, and at the exit from the injecting collector, there are installed the pneumatic compensators against the variations of the input. The mover of the drilling pump is powered mostly by the engines with the internal combustion, and includes within itself the the crank-rod mechanism.

The working tools of the drilling pump have the increased resistance against the impact of the particles of abrasive, petroleum, chemical reagents, and so on. Within the USSR, there are issued for the geological-exploratory drilling the drilling pumps with the useful power of 0.63, 4.1, 7.8, 16.0, 33.10, 52.3 kilowatts; for the geophysical structural-prospecting and geological-exploratory drillings - 32, 50, 80, 125 kilowatts; for the deep operational and geological-exploratory drilling for petroleum and gas - 190, 235, 300, 375, 475, 600, 750, 950, 1180 kilowatts. The major tendency for the development of the drilling pumps is: the increase of the working pressures, and of the power of the mover, the expansion of the limits for the stepless regulation of the supply of the fluid.