A continuous pressurized electro-hydraulic bridge plug setting tool driven by a gear train

Abstract

The invention discloses a wheel train transmission continuous pressurization electro-hydraulic bridge plug setting tool. The wheel train transmission continuous pressurization electro-hydraulic bridgeplug setting tool comprises an upper power pumping device, a fixed shaft wheel train transmission mechanism and a lower continuous pressurization device. A cable is connected to a motor as the powersource for the setting tool; after the cable is lowered down to the setting position, the motor drives a hydraulic pump through an output shaft, and a high-pressure fluid is delivered through the hydraulic pump; at the same time, the motor transmits the power to a transmission shaft through the output end of a central shaft of the hydraulic pump, and the meshing transmission of the fixed shaft wheel train transmission mechanism driven by a universal shaft drives a crankshaft to rotate and further drives a connecting rod to reciprocate up and down, so that the rotary motion of the motor is converted into the vertical reciprocating motion of the connecting rod so as to drive a plunger to reciprocate up and down. The wheel train transmission continuous pressurization electro-hydraulic bridgeplug setting tool is reasonable in structure, safe and reliable, can quickly raise the output pressure of a low-power oil pump to the pressure required for the bridge plug setting, reduces the pressurization stroke, ensures high-efficiency pressurization performance while achieving continuous pressurization effect, and can effectively solve the problems of long setting time, low work efficiency, big setting error,complicated use and the like of the traditional setting tool.

Description

technical field [0001] The invention relates to a downhole bridge plug setting tool, in particular to an electrohydraulic bridge plug setting tool of a gear train transmission continuous pressurization type. Background technique [0002] Downhole plug setting tools currently used in oil fracturing and oil test formation sealing processes mainly include oil pipe transmission hydraulic plug setting tools, cable transmission explosive plug setting tools and pure electrohydraulic plug setting tools. There are three kinds of sealing tools. [0003] The oil pipe transmission hydraulic bridge plug setting tool needs the ground water pump truck to suppress the pressure, and the oil pipe string needs to be connected to the setting tool, and the pressure of the ground liquid is directly transmitted to the setting tool through the pipe string. During the construction process, the pipe string needs to be lifted, which is labor-intensive , the operation time is long, the work efficiency...

AI Technical Summary

Problems solved by technology

The tool adopts a two-stage piston-cylinder parallel connection plus a working piston structure, which cannot ensure that the working piston can obtain a continuous power source, so as to achieve the effect of continuous pressurization, and the pressurization stroke is long, the pressurization process is difficult to control, and the internal components are worn out. short working life

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