METHOD OF CONTROL OVER DEVELOPMENT OF GAS-CONDENSATE DEPOSIT WITH INJECTION OF GASEOUS AGENT Russian patent published in 2000 - IPC

FIELD: gas producing industry. SUBSTANCE: prior to injection of gaseous agent into formation, content of in products of producing wells is determined. If values of for different wells differ from one another by values exceeding the permissible ones, for control use is made of concrete value of $ for each well separately. If these values vary for different wells within value of error of determination, use is made of one weighted mean for entire group of producing wells. After start of injection of gaseous agent into formation, value of content of nitrogen in injected agent is determined at a preset frequency, 1-2 times a month, which shall approximately by order of magnitude lower than that in formation mixture and in products of producing wells. Determined for each producing well, by results of each analysis, with estimation of nitrogen content in products, is fraction of gaseous agent with the help of the given formula. EFFECT: higher accuracy of determination of moment of breakthrough of injected agent and determination of its fraction in products of producing well of gas-condensate deposit. 1 dwg, 1 tbl, 1 ex