PROCEDURE FOR EXTRACTION OF RESERVOIR GASSY FLUID Russian patent published in 2011 - IPC F04F1/08 

FIELD: oil and gas production.

SUBSTANCE: procedure for extraction of reservoir gassy fluid consists in lifting fluid with pumps, also, continuous flow of liquid is generated by alternation of cycles of reception and displacement of working chambers of interchangeable double-chamber well pumps of replacement connected with pipelines of extracted fluid and with cable of electric current, and in withdrawal of waste and associated gas. The well pump of replacement of a lower step of installation is arranged in a well below a static level of fluid at 5-25 m. Further, pressure is built up in sealed annular space wherein the static level of fluid is dropped to a level below a lower step of arrangement of the well pump of replacement. Due to difference between higher and lower pressure generated with the vacuum-compressor unit in the pipeline of spent and associated gas withdrawal fluid is received into one of working chambers of the pump of the lower step of the installation. Displacement from another chamber of the pump of the lower step and pumps of the remained steps through pipeline of extracted fluid to pumps of upper steps is performed due to inflow of compressed air into them from annular space of the well. Fluid is received with working chambers of pumps positioned higher due to replacement of fluid from the working chambers of the pumps positioned lower.

EFFECT: extraction of gassy fluid with considerable contents of mechanical impurities and associated gas from high and low depth.

1 cl, 7 dwg