FACILITY TO EVACUATE GAS FROM HOLE CLEARANCE OF WELL Russian patent published in 2001 - IPC

FIELD: oil and gas production industry. SUBSTANCE: invention is specifically related to plants of mechanized extraction of oil and gas mixture from wells. Facility to evacuate gas from wells equipped with pumping machines includes cylinder, piston coupled to balance beam of pumping machine, working chambers formed by piston and its rear side and walls of cylinder. Suction gas line with valve is also included. Gas line communicates cylinder to hole clearance of well and pressure gas line to valve. Facility has additional suction and pressure gas lines with valves and by-pass lines and gas lines with shut-off devices. Additional suction and pressure gas lines link tight part of cylinder limited by its walls and rear side of piston to suction and pressure gas lines to communicate both working chambers. EFFECT: increased oil output thanks to expansion of conditions of employment of facility for evacuation of gas from hole clearance of well. 2 dwg, 1 tbl