Working principle of drilling pump

If the entire drilling construction process is compared to human life activities, then the drilling pump, like the human heart, is the source of continuous circulation of drilling fluid from the ground to the bottom of the well, and then back to the ground from the bottom of the well. The drilling pump sucks the drilling fluid in the circulating tank, and at a pressure of 10-30 MPa and a delivery displacement of 20-60 liters per second, it passes through the ground high-pressure manifold, hose, drill pipe, and drill nozzle to the bottom of the well. , It will also form a high-pressure jet when flowing through the nozzle of the drill bit. Play the role of breaking rocks, cleaning the bottom of the well, and cooling the drill bit. When drilling with bottom hole screws or turbodrills, drilling fluid is the power source for power drilling tools. If the drilling pump fails to work normally and the drilling fluid cannot maintain circulation during the drilling process, downhole drilling engineering accidents will occur. It's as if the human heart stopped beating. Click here to know more details.

Drilling pump classification

A reciprocating pump is a kind of drilling pump commonly used in oil drilling rigs, and its function principle is exactly the same as that of general reciprocating pumps. The power end of the drilling pump is a set of crank and slider mechanisms. Because the liquid transported is mostly mud, it is also called a mud pump. There are many types of drilling pumps, which can be divided into double-cylinder pumps and triple-cylinder pumps according to the number of hydraulic cylinders of the pump. According to the number of times the piston sucks or discharges liquid once, it can be divided into single-acting pumps and double-acting pumps. At present, the most widely used oil drilling rigs at home and abroad are double-cylinder double-acting and triple-cylinder single-acting piston drilling pumps.

Work efficiency

The efficiency of the drilling pump directly affects the speed and progress of drilling. The pump valve, piston, cylinder liner and seal of the YG mud pump are the weakest parts of the drilling pump because they have been working in the drilling fluid containing fine sand for a long time, and the working environment and conditions are harsh. In recent years, with the joint efforts of scientific research and manufacturing units, my country has developed a number of high-quality, long-life drilling pump accessories, which greatly improves the working efficiency of drilling pumps.

Mud pump development

In the 1980s, due to the rise and development of jet drilling technology, the matching update speed of high-horsepower drilling pumps was greatly accelerated. In just over ten years, the mud pump has developed from 600 horsepower in the past to 800, 1000 and 1300 horsepower now. Individual deep well drilling teams are also equipped with 1,600-horsepower drilling pumps.