Increase of Condensation for Gas-Condensate Discharges at the Finishing Stage of Development

Based on a two-phase multicomponent filtration model, the process of retrograde condensate extraction at the final stage of the development of a gas-condensate reservoir was investigated, with the creation of a volume of ethane rims in the reservoir with subsequent injection of the separated gas. It has been established that ethane dissolves in a retrograde condensate during continuous mass exchange between the phases of the system, creates a shaft of liquid hydrocarbons higher than critical at the front of displacement, at which two-phase filtration begins, which allows for the development of reserves of retrograde hydrocarbon condensate and, ultimately, provides effective reservoir development. (C) 2020 "Oil Gas Scientific Research Project" Institute. All rights reserved.