Modeling of the processes of development of gas condensate fields in the depletion mode

Based on mathematical modeling under the influence of capillary and gravitational forces of condensate operating in depletion mode, settling in the gas-condensate layer, as a result of redistribution in height, the formation of a technogenic-condensate flow at the gas-water boundary and the production of condensate by a horizontal well drilled into it were studied. Initially, when exploiting a gas condensate formation with a five-point production well, the nature of the distribution of reservoir pressure and phases along the height, the time of formation of technogenic condensate and the interval of its location along the height of the gas field were determined. In the second case, the process of water exposure was realized by exploiting the formation with production wells to remove condensate with a horizontal well drilled into a technogenic condensate deposit. Mining wells reveal the productive height of the formation in two ways: in the first case from the upper part, in the second case from the lower part, and after entering the condensate flow, the horizontal well is introduced into operation. Exposure to water ends at 98% dilution of the horizontal well product. The results of calcuıations show that the formation of technogenic condensate at the water-gas interface in the reservoir depletion mode is the result of the segregation process. The greatest effect in increasing the condensate yield of a horizontal well drilled into a technogenic condensate field is achieved by pumping water from the upper part of the formation. Keywords: gas-condensate reservoir; segregation process; technogenic condensate fringe; horizontal well; condensate recovery coefficient.