HOW TO DISCHARGE GAS AND LIQUID IN THE BOREHOLE AND DEVICE FOR IMPLEMENTATION Russian patent published in 2016 - IPC F04D13/10 E21B34/10 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to a technique of injecting gas and liquid pump into the reservoir to maintain reservoir pressure. A method of gas injection and the fluid in the well pump, provided with suction and discharge valves consists in entering liquid mixture with a predetermined overpressure from an external source. Pump is used as a downhole electric centrifugal pump mounted in the underground tank constructed in the form of a pit. Gas-liquid mixture is injected successively into the space between the casing and tubing and tubing (NKT). Turn on the pump, watching the changes in the level of fluid in the annulus and switch the flow of fluid from the pump turns in the tubing and into the space between the casing and tubing. Compressed gas-liquid mixture is fed into the injection well.

EFFECT: group of inventions aimed at improving the efficiency of gas-liquid mixture injection pump into the reservoir and simplification used for this device.

2 cl, 1 dwg