Method and device for preventing sand settling in fracturing pump truck hydraulic end suction manifold

Abstract

The invention discloses a method and a device for preventing sand settling in a fracturing pump truck hydraulic end suction manifold, and belongs to the technical field of oil and gas field hydraulic fracturing. According to the method for preventing sand settling in the fracturing pump truck hydraulic end suction manifold, a reducing pipe is adopted in the suction manifold, and determining of the shape of the reducing pipe comprises the following steps that firstly, the suction pipe length L, the suction port diameter D<suction port> and the fracturing liquid flow Q< discharging port> of a discharging port are determined; secondly, the critical settling velocity v<settling> of the fracturing sand in the fracturing liquid is determined; thirdly, the critical diameter D<criticality> of the suction manifold discharging port is calculated; and fourthly, the suction manifold discharging port diameter D<discharging port> is determined, and the D<discharging port> is smaller than or equal to the D<criticality>. Through the reducing suction manifold design, the fracturing liquid can be kept with the high flow speed to flow, settling of the fracturing sand is reduced, fracturing construction and subsequent pumping bridge plug perforation continuous working construction safety is improved, and the labor intensity of personnel is lowered.

Description

technical field [0001] The invention belongs to the technical field of hydraulic fracturing in oil and gas fields, and relates to a method and a device for preventing sand settling in a suction manifold of a hydraulic end of a fracturing pump truck. Background technique [0002] Hydraulic fracturing technology is an effective reservoir stimulation measure, which is widely used in the development of conventional and unconventional oil and gas fields. Hydraulic fracturing is to rely on ground fracturing pump trucks to inject fluid into the well at high speed. With the help of the high pressure at the bottom of the well, the oil layer rocks are broken and cracks are formed. The cracks are supported by the pumped fracturing sand to form a well with a certain flow conductivity. Oil and gas seepage channels. During the fracturing construction process, the fracturing fluid and the sand-carrying fluid enter the suction low-pressure cavity of the hydraulic end through the suction ma...

AI Technical Summary

Problems solved by technology

These grit will bring great risks to the pumping bridge plug perforation continuous operation construction, and the grit needs to be cleaned during the maintenance of the fracturing pump truck in the later stage, which will increase the labor intensity of the personnel

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