Device used for fracture exploitation

Abstract

The invention discloses a device used for fracture exploitation. The device comprises a cylinder block and a piston rod, one end of the piston rod movably penetrates one end face of the cylinder blockand is connected with a piston located inside the cylinder block, and the other end of the piston rod is connected with the power end of a fracturing pump; a feeding opening and a discharging openingare formed in the cylinder block, a suction valve is arranged above the feeding opening, the cylinder block is communicated with a feeding pipe through the feeding opening, a discharging valve is arranged above the discharging opening, the cylinder block is communicated with a discharging pipe through the discharging opening, and a plurality of first grooves are formed in the inner surface of thecylinder block; limiting pads matched with the first grooves and a plurality of filling pads are further included, the height of the limiting pads is larger than the height of the first grooves, andthe height of the filling pads is equal to the height of the first grooves; and second grooves are formed in the side face, in contact with the cylinder block, of the piston, and balls are arranged inthe second grooves. According to the device, the first grooves, the filling pads, the limiting pads, the second grooves and the balls are applied, and the aims of reducing the output load of the power end of the fracturing pump is achieved.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular to a device for fracturing exploitation. Background technique [0002] Petroleum plays a very important role in the development of human civilization. However, oil is a non-renewable resource, and the current demand for oil is increasing year by year, resulting in a continuous decline in oil reserves in oil fields. For most oil fields in the middle and late stages, the amount of oil obtained by conventional mining methods is very small, so in these Oilfields introduce the process of fracturing to increase oil production. [0003] Fracturing equipment used in the fracturing process, such as fracturing pumps, is one of the main equipment used to increase oil production. The fracturing pump can transport the fracturing fluid to the bottom of the well, causing the rock at the bottom of the well to crack to increase the oil permeability and increase the rapid flow of oil under the forma...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a device for fracturing production, to solve the problem that after the fracturing pump in the prior art has been in operation for a long time, the movement of the piston in the cylinder is only affected by the power end, and the piston and the cylinder The tight friction between them leads to the problem that the power end is easily damaged

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