FACILITY TO REMOVE FLUID FROM WELL Russian patent published in 2003 - IPC

FIELD: oil and gas industry, removal of fluid from bottom holes of water flooded wells at various stages of development of gas condensate fields. SUBSTANCE: facility includes body with radial and vertical conduits to communicate hole clearance with intrapipe clearance. Ejector with return valve is placed inside body. Hydraulic control valve comprising cylinder and connecting sleeve with branch pipe is positioned in lower part of body. Hydraulic control valve houses combined valve including piston valve and telescopic valve-shutdown with blind axial duct and side circulation holes. EFFECT: potential for fluid removal from wells with low formation fluid. 3 dwg