METHOD OF INCREASE OF CONDENSATE OUTPUT BY EXPLOITED OIL AND GAS CONDENSATE DEPOSIT OBJECT Russian patent published in 2020 - IPC E21B44/00 E21B47/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used in development of gas condensate deposits to provide maximum current and potentially possible final condensate recovery coefficients due to operational optimization of each well operating mode individually. Regulation is carried out using an automated process control system (APCS), integrated with software package for operation with geological information (SPGI), including geologic-technological model "formation-well-gas collection system-product preparation system" and numerical algorithm for calculation of process mode of well operation. Technical result is achieved due to that special investigations of wells are carried out to determine dependence of specific content of condensate in produced gas from flow rate and depression on formation at different reservoir pressure. Wells are ranked by the ratio of separation gas and unstable condensate in the volume of extracted products. Obtained calculated characteristics are introduced into a database (DB) APCS. Next APCS together with SPGI, using process model "formation-well-gas collection system-product preparation system", determines integral indicators of fishing operation to ensure stable operation of collection and preparation system, calculates minimum and maximum possible modes of operation for each well. Further, with a given sampling step, the system sequentially redistributes gas production between wells taking into account the ratio of production of gas and gas condensate, which is individual for each well, maximizing the volume of gas condensate production in the entire field. At that, at each step APCS repeats calculations and obtains correlation value of extracted condensate amount from total volume of produced gas, which is displayed on the screen to operators together with information on degree of compliance with process limitations. On the basis of these data, the system and / or operators make a prompt decision on establishment of the current level of gas, condensate production and corresponding parameters of the process mode individually for each controlled object of the system "formation – well – gas collection system – product preparation system".

EFFECT: technical result consists in maximization of current output of condensate and potential final coefficient of its extraction on the basis of on-line control of deposit development process with individual approach to control of each well operation mode and purpose of well survey as per deposit status.

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