A plunger and hydraulic end of a fracturing pump

Abstract

The invention discloses a plunger and a fluid end of a fracturing pump and aims to solve the problem of inconvenience in replacement of a valve box in the prior art. The plunger is characterized by comprising a plunger pipe and a suction valve; the plunger pipe extending along a straight line or an arc line is provided with a passage penetrating along the extension direction of the plunger pipe and comprises a first end with a first passage port and a second end with a second passage port, the second passage port is used for liquid input, the first end is used for extending into the valve box at the fluid end of the fracturing pump, and the second end is used for being connected with a force application port capable of pushing and pulling the plunger; the suction valve is arranged at the first end, the suction valve is capable of sealing the first passage port under a force towards the second end and can be separated from the first passage port under a force away from the second end. By the plunger and the fluid end of the fracturing pump, service life of the valve box can be prolonged.

Description

technical field [0001] The present application relates to the field of oil exploitation, in particular to a plunger and a fluid end of a fracturing pump. Background technique [0002] Petroleum is a fluid substance stored in the pores of the oil layer. At present, oil is extracted mainly through the penetration of oil in the pores of the oil layer. With the continuous extraction of oil, the pores of the oil layer are blocked, resulting in a gradual decrease in the permeability of the oil layer, which leads to a continuous decrease in the oil production of the oil well. In order to increase the oil production of oil wells, hydraulic fracturing technology is usually used to form one or several fractures in the oil layers to increase the permeability of the oil layers, thereby increasing the production of oil wells. Oil layer hydraulic fracturing technology is to inject liquid into the oil layer through the fracturing pump on the ground at a speed greater than the absorption c...

AI Technical Summary

Problems solved by technology

[0005] At present, during the use of the hydraulic end of the fracturing pump in the prior art, cracks often appear at the direction changing places of the second channel, the third channel and the first channel of the valve box 4, and the valve box needs to be replaced 4. To replace the valve box 4, the plunger assembly 1 and the suction valve cylinder 6 connected to the valve box 4 need to be disassembled respectively, and when installing a new valve box, the The plunger assembly 1 and the suction valve cylinder 6 are installed on a new valve box, which makes it very inconvenient to replace the valve box in actual operation

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