METHOD FOR NON-COMPRESSOR EXTRACTION OF ANNULAR GAS ON CLUSTERS OF OIL WELLS Russian patent published in 2024 - IPC E21B43/00 E21B43/12 

FIELD: oil industry.

SUBSTANCE: method for non-compressor extraction of annular gas on clusters of oil wells includes alternating supply of gas from annular space of wells to upper parts of two compression tanks with suction and injection valves, subsequent displacement of the supplied gas from them into the flow header of the well with liquid after their volumes are completely filled with gas. At that, gas displacement from annular space of wells is performed by stratified water phase accumulating in reservoirs in cycles of formation product inflow into these reservoirs until the water level in them reaches the upper positions. Gas is fed into compression tanks by discharging water from these tanks and its pumping by a ground pump into a water treatment system for pumping into productive formations or a discharge header of the well. At that, upon reaching the “gas-water” phase separation level in the tanks of their extreme lower positions, the tanks are switched over. Supply of ground pump is selected so that periods of water discharge from reservoirs do not exceed periods of complete accumulation of stratified water in reservoirs.

EFFECT: extraction of annular gas and its displacement into discharge manifold of well cluster from compression reservoirs without application of working fluid pumping method is provided.

1 cl, 1 dwg