METHOD FOR REMOVING CONDENSATE OR WELL KILLING FLUID FROM A PLUGGED GAS WELL, A METHOD FOR OPERATING A GAS WELL AND PREVENTING ITS “SELF-PLUGGING” AND A DOWNHOLE DEVICE FOR THEIR IMPLEMENTATION Russian patent published in 2023 - IPC E21B43/12 

FIELD: mining industry.

SUBSTANCE: invention relates to the development of gas and gas condensate fields. In particular, a method for removing liquid from a killed gas well with the equipment of a tubing string is claimed, including pumping compressed gas from the surface into the well, while the compressed gas is charged into the annular space through the wellhead fittings or the sub-packer area of the annular space through the tubing string in the case of supplying the tubing string with a packer and a check valve, which is installed below the diffuser and the confuser nozzle inside the tubing string, for its subsequent supply to the tubing string when the tubing string is open through the communication channel of the annular space with the confuser nozzle, located under the diffuser, and the annular space is charged with the displacement of the liquid being removed into the bottom-hole zone of the formation. The method for operation of a gas well with tubing string equipment and prevention of its “self-plugging” and a downhole device for the implementation of these methods are also disclosed.

EFFECT: increase in the efficiency of removing liquid from a gas well due to the organization of an ejection effect in the well, in which mixing of two media occurs under conditions when one of them, being under pressure, affects the other and carries it in the desired direction.

5 cl, 5 dwg