DEVICE FOR PROPORTIONED DELIVERY OF REAGENT TO BOTTOM-HOLE OF WELL Russian patent published in 1999 - IPC

FIELD: oil and gas production industry. SUBSTANCE: device is used for continuous proportioning of reagents in gas well and can be widely employed in oil and gas production industry for delivery of liquid inhibitor into well. Upper part of gas separator at external side is provided with self-packing collar which closes annular space of well. Protective housing of self-packing collar is rigidly connected with lower part of gas separator. Collar is telescopically installed on upper part of gas separator with possible axial displacement. Installed in internal space of container is inlet pipe union and outlet pipe union. Each pipe union is provided with non-return valve. Pipe unions connect container with annular space located above self-packing collar. There is overflow valve in joint between gas separator and container. Outlet pipe union is installed inside overflow valve. Aforesaid embodiment of device improves its operational efficiency due to allowing for periodic filling it with working reagent without lifting of device to ground surface and reserving required amount of reagent in annular space. EFFECT: higher efficiency. 1 dwg