Hydraulic oil control device for gas drilling underground power system

Abstract

The invention provides a hydraulic oil control device for a gas drilling underground power system. The hydraulic oil control device comprises an energy storage unit as well as a distribution unit, a connecting pipeline and a regulating unit which are sequentially connected, wherein the distribution unit comprises an oil pumping valve and an oil return valve, which are one-way valves; the oil pumping valve can receive hydraulic oil flowing out from a hydraulic pump, and outputs the hydraulic oil; the oil return valve can convey recycled hydraulic oil to the hydraulic pump; the connecting pipeline can receive and circulate hydraulic oil output from the oil pumping valve; the energy storage unit is arranged on the connecting pipeline, and is used for storing the hydraulic oil output from theoil pumping valve in a case that oil pressure in the connecting pipeline is lower than a rated value; and the regulating unit can receive the hydraulic oil in the connecting pipeline in a case that oil pressure in the connecting pipeline is lower than the rated value, and performs pressure regulation and flow regulation on the received hydraulic oil. The hydraulic oil control device has the beneficial effects of being capable of avoiding too great pressure loss, and providing continuous pressure and flow supply.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas drilling equipment, in particular to a hydraulic oil control device for a gas drilling downhole power system. Background technique [0002] At present, the exploration of oil and gas resources in China is becoming more and more difficult. At present, it has turned to low-yield, low-pressure, low-permeability and other difficult-to-exploit oil and gas reservoirs, which contain a large number of water-sensitive, salt-sensitive, alkali-sensitive and clastic rock formations, and the permeability after interaction with drilling filtrate It is difficult to achieve reservoir protection or discover new gas reservoirs with conventional drilling methods. The use of gas drilling technology is more conducive to the discovery and protection of oil and gas layers, but the gas directly drives the actuator to perform insufficient work. Contents of the invention [0003] In view of the deficiencies ...

AI Technical Summary

Problems solved by technology

[0002] At present, the exploration of oil and gas resources in China is becoming more and more difficult. At present, it has turned to low-yield, low-pressure, low-permeability and other difficult-to-exploit oil and gas reservoirs, which contain a large number of water-sensitive, salt-sensitive, alkali-sensitive and clastic rock formations, and the permeability after interaction with drilling filtrate It is difficult to achieve reservoir protection or discover new gas reservoirs with conventional drilling methods

The use of gas drilling technology is more conducive to the discovery and protection of oil and gas layers, but the gas directly drives the actuator to perform insufficient work

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