Electro-hydraulic setting tool for oil and gas well

Abstract

The invention relates to an electro-hydraulic setting tool for an oil and gas well. The electro-hydraulic setting tool comprises a pump station system, a reversing valve and a hydraulic cylinder barrel which are connected in sequence, a piston rod is arranged in the hydraulic cylinder barrel, the front end of the piston rod extends out of the hydraulic cylinder barrel, and an inner cavity of the hydraulic cylinder barrel is divided into a first oil cavity at the rear end and a second oil cavity at the front end by the piston rod. The reversing valve is of a two-position four-way valve structure, and when the reversing valve is in a first state, the pump station system pumps hydraulic oil into the first oil cavity so as to push the piston rod to extend forwards; and when the reversing valve is in the second state, the pump station system pumps the hydraulic oil into the second oil cavity so as to push the piston rod to retract backwards. Compared with the prior art, the structure is stable and reliable, the setting process is easy to control, the setting success rate can be effectively increased, the construction difficulty can be effectively lowered, and potential safety hazards can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of oil and gas well perforation, in particular to an electro-hydraulic setting tool for oil and gas wells. Background technique [0002] Bridge plugs are used in oil and gas wells to isolate different layers of oil and gas wells, which are convenient for phased exploitation of different oil and gas layers, and have the characteristics of less construction procedures, short periods, and accurate sealing positions. Bridge plug setting refers to transporting the bridge plug to a certain position in the oil and gas well through certain tools, and releasing the bridge plug to fix it in the oil and gas well. The bridge plug setting tool is to transport the bridge plug to the required position downhole and release the bridge plug. It is an auxiliary pushing and setting tool for the bridge plug. [0003] In the production of oil and gas wells, it is necessary to use bridge plug setting to achieve interlayer isolati...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: aim at the current gunpowder type cable bridge plug setting tool using the high-pressure gas generated when the gunpowder burns as the source power to push the bridge plug to achieve setting, resulting in low setting success rate, difficult construction and potential safety hazards Larger problem, providing an electro-hydraulic setting tool for oil and gas wells

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