Mud pumps are reciprocation plunging devices that are
specifically designed to pump the drilling fluid down the drill string and back
up the annulus. These are large pumps used on drilling rigs. However, some of
these pumps are also used in construction sites for transferring the concrete
mixture. Most pumps used in drilling rigs are far too powerful for such needs.
Mud pumps used
in drilling rigs serve a variety of purposes. The primary job is
usually pushing the mixture into the fractured earth’s surface, but they are
also used to clear out the sludge and mud extracted from the drilling hole. The
most-used pumps at a drilling rig are triplex and quintuplex pumps. Both are
designed with specific applications in mind. Quintuplex pumps are more powerful
and sophisticated than the others.
The major benefit of mud pumps is their efficiency
with the immense amount of strength generated by them, often exceeding 2700bhp
with a pressure of 20,000psi along with the flow rate of 51.3 bpm. Such figures
illustrate the strength of high-power mud pumps.
Good-quality mud pumps have a suction valve retainer
with a unique design. The superior valve design significantly reduces fluid end
erosion. This directly impacts the life of the fluid end, making it last much
longer than it otherwise would. Superior-quality mud pumps are also able to
provide increased fluid capacity at slower speeds that raises the longevity of the major parts and
components. Quintuplex pumps are extremely effective whenever under high
rod-loads.
Some of the other benefits of mud pumps include:
- Simple
structure for easy maintenance and disassembly
- Smooth
operation, minimal vibration, and low noise
- It can
deliver high concentration and high viscosity suspended slurry
- The
drilling fluid flow is stable. It has no over-current, pulsation, and
remains stirred.
- The discharge
pressure is not proportional to the speed. The displacement can be
adjusted easily by the shifting mechanism or motor.
- The pumps
usually have a high self-absorption capability, and they can suck the liquid
directly without the bottom valve.
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