DEVICE FOR RESERVOIR FLUID REMOVAL FROM GAS WELL Russian patent published in 2014 - IPC E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: device for reservoir fluid removal from a gas well is related to equipment designed for operation of gas wells and intended for removal of reservoir fluid from gas wells. The concept of the invention is as follows: the device consists of a liner-packer combination at which lower end there is a telescopic tube with perforated partition at the lower cone; the tube has positive buoyancy. In the liner axial channel there is a ring piston with a row of radial openings, and in gaps between these openings there is a row of longitudinal openings. The ring piston is fixed rigidly to a hollow rod equipped with a cross-over shoe with an inner bore in the upper part and an extension nipple in the lower part. The hollow rod has a row of perforated openings connected hydraulically to radial openings in the ring piston. The extension nipple has a tapered face and a hollow float in which axial channel there is a perforated partition with a pilot pin equipped with a ball valve installed so that it can interact with the tapered face of the extension nipple.

EFFECT: improving operating reliability of the device.

3 dwg