High-power five-cylinder plunger pump

Abstract

The invention discloses a high-power five-cylinder plunger pump. The plunger pump comprises a power end assembly, a hydraulic end assembly and a reduction gearbox assembly, wherein the power end assembly comprises a crankshaft box body, a crosshead box body and a spacer frame; the crankshaft box body, the crosshead box body and the spacer frame are sequentially connected; the hydraulic end assembly is fixed on the spacer frame; the reduction gearbox assembly is fixed on the crankshaft box body; and the cylinder spacing of the five-cylinder plunger pump is 13-14 inches, so that a guarantee is provided for the output of high power of the five-cylinder plunger pump. According to the high-power five-cylinder plunger pump, the problems that the area of a shale gas fracturing well site is narrowand the number of required fracturing equipment is relatively large are effectively solved, thus reducing the use of equipment, and facilitating the arrangement of the well site.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to a high-power five-cylinder plunger pump. Background technique [0002] With the further development of unconventional oil and gas and shale oil and gas, the pressure and displacement requirements of fracturing operations are constantly increasing. The volume is also getting higher and higher, which makes the scale of fracturing construction larger and larger, and the harsh operating conditions also put forward higher requirements for fracturing equipment, especially for plunger pumps. At present, in the process of shale oil and gas development, the operating pressure generally reaches 80-90MPa or even higher, and the single-stage operating displacement is generally 1800m 3 -2000m 3 Even above, the plunger pump must not only be able to meet the continuous operation of high pressure and large displacement, but also ensure the quality stability under continuous high-load ope...

AI Technical Summary

Problems solved by technology

At present, the most widely used fracturing truck on the market is the 2500 fracturing truck, which is equipped with a 2800hp plunger pump. Other commonly used fracturing pump types include 2500hp pumps, 3300hp pumps, and 4000hp pumps. Taking the 2800hp pump as an example, due to power limitations , the single-pump displacement is low in high-pressure operation, and a single-stage displacement requirement is 14-16m 3 In a shale gas well site per minute, a total of nearly 20 fracturing trucks are required to operate at the same time to meet the total displacement requirements of the fracturing operation, which will occupy a large well site area and increase the narrow oil and gas field well site equipment Difficulties in layout. In addition, conventional plunger pumps are faced with increasingly harsh operating conditions, and they are in high-load operations for a long time. The frequency of problems is also increasing, which increases the cost of maintenance and repair.

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