METHOD FOR ESTIMATING CONDENSATE PRODUCTION IN DEVELOPMENT OF GAS CONDENSATE FIELDS Russian patent published in 2023 - IPC E21B47/00 

FIELD: gas industry.

SUBSTANCE: invention relates to the field of development of gas condensate fields, in particular, to methods for producing condensate. The technical result is achieved by the proposed method for estimating condensate production when developing gas condensate fields involving the development of an initial hydrodynamic model of the formation and an initial model of the reservoir fluid without taking the interaction of the fluid with the rock into account. The properties of the reservoir fluid are calculated with the developed initial model of the reservoir fluid. A curve of capillary pressure for rock samples of the formation, wherein the interaction of the reservoir fluid with the rock is taken into account, is then built by taking measurements in the laboratory on the core material from the field, and the properties of the reservoir fluid under the conditions of interaction of the fluid with rock are calculated with the developed initial model of the reservoir fluid using the built curve of capillary pressure. The parameters of the developed initial model of the reservoir fluid are adjusted so that the results of calculations of the properties of the reservoir fluid obtained with the initial model without taking the interaction of the fluid with rock into account match the results of calculations of the properties of the reservoir fluid under the conditions of interaction of the fluid with rock obtained with the initial model of the fluid using the built curve of capillary pressure. The process of development of the formation is modelled using the initial hydrodynamic model of the formation and the adjusted initial model of the reservoir fluid, and the condensate production is calculated, followed by determining the parameters of the system for collecting and processing the produced condensate.

EFFECT: high accuracy and enhanced quality of estimating condensate production due to the influence of capillary effects described by the curve of capillary pressure on the thermodynamic state and transport properties of the reservoir fluid being taken into account.

1 cl, 4 dwg