OPERATING METHOD OF FLOODED GAS WELLS, AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC E21B43/00 

FIELD: oil and gas industry.

SUBSTANCE: method involves perforation of a production string below the level of current water-gas contact; lowering to the well of an additional tubing string of small diameter with layout of bottomhole equipment lowered below the operating serving for separation of inner space of the production string, which is filled with gas and water, a working chamber intended for accumulation of liquid condensing in the working face; supply of high-pressure gas to the mall-diameter tubing string from a compressor installed on day surface or a donor well with wellhead pressure above hydrostatic pressure at absolute hypsometric level corresponding to location of process holes of the receiving well more than by 10 atm; gas flushing of excess pressure, liquid condensed in the working face and accumulated in the working chamber to water-saturated interval located below the operating productive interval; as well as installation on day surface of a separator for gas drying, pressure gauges for monitoring of wellhead pressure of the main and minor tubing string, shutoff and control devices for control of gas flow along the main and minor tubing string, a control unit performing the monitoring and control of the process according to the specified algorithm.

EFFECT: increasing efficiency of inventions.

4 cl, 1 dwg