The features of operation of gas and gas condensate wells under conditions of watering and condensation of heavy hydrocarbons from gas are given. Analytical dependencies are characterized to determine the minimum required gas flow rate to carry liquid from the bottom to the surface, the critical velocity of gas at the inlet to the tubing and the corresponding critical gas flow rate, the Froude parameter for a gas-liquid mixture, the modified Froude parameter for gas and liquid flow and the summary Froude parameter for the gas flow. Calculations of the given criterion parameters for six water-cut gas and gas condensate wells with different geological and technical characteristics at different fields of Ukraine were performed. The area of application of various calculation methods for assessing the conditions for stable operation of water-cut gas and gas condensate wells has been established. It is recommended to use the value of the critical gas flow rate according to the Turner formula, increasing it by 1020 % and the minimum required flow rate according to the formulas of VNDIgaz and Kondrat R.M., Petrushak V.S., to assess the conditions for stable operation of water-cut gas and gas condensate wells. When using the Turner formula, it is necessary to have a reliable value of the surface tension at the gas-liquid interface, and the VNDIgas formula does not take into account the liquid flow rate. The operating conditions of the six wells considered are established: two wells operate stably with complete carryover of liquid from the bottom to the surface, one well is on the verge of stopping natural flowing, and three wells need to implement methods to intensify the carryover of liquid
Received 21.11.2022
Revised 03.02.2023
Accepted 27.02.2023
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