SYSTEM AND METHOD FOR RESTORING WELL PRODUCTIVENESS AND EXTRACTION OF OIL BY PUMP METHOD, INCLUDING CASE AFTER STOPPING Russian patent published in 2004 - IPC

FIELD: oil extractive industry.

SUBSTANCE: system includes tubing pipes lowered into well, standard mouth armature with output line. Surface equipment for forming controlled depressions has pump device, gas force-pumping device, device for receiving low-dispersion gas-liquid mixture during operation. Mouth armature is made with possible providing for switching of well by means of latches for operation into collector through line for winding output line with constant adding of liquid into groove capacitance, as well as disabling and dismounting of surface equipment when needed flow intensiveness is reached. Method also includes forming of liquid circulation in a well through inter-pipe space and tubing pipes by feeding it with pump device into inter-tubular space of well. Into liquid flow gas is forced by means of gas force-pumping device through device for receiving low-dispersion gas-liquid mixture. At the moment of feeding gas into flow of liquid additionally enabled is down-pump, and liquid circulation is performed additionally through operational down-pump. Values of face pressure are lowered by effect from low-disperse gas-liquid mixture. Stopping liquid is carried onto surface as well as well product, into groove capacitance. Latches of mouth armature are manipulated and well is switched for operation into collector through winding of output line.

EFFECT: well is completed for operation during restoring its productiveness without additional stopping.

2 cl, 1 ex, 1 dwg