METHOD FOR DETERMINATION OF FILTRATION DIRECTION OF EXTERNAL GASEOUS AGENT IN GAS CONDENSATE DEPOSIT Russian patent published in 2011 - IPC E21B47/10 E21B43/12 

FIELD: oil and gas production.

SUBSTANCE: method for determination of filtration direction of external gaseous agent in gas condensate deposit consists in pumping external gaseous agent into pressure wells, in withdrawal and analysis of production of producers, and in charting pattern of intake of external gaseous agent into producers. There is carried out geophysical study of pressure wells and producer for further evaluation of lithologic partition of geologic section exposed with these wells, of intervals of fluid inflow in producers and of intervals of absorption of external gaseous agent in pressure wells. On base of obtained data there are determined pressure wells and producers subject to gas-dynamic inter-communication. Pumping external gaseous agent into pressure wells is alternately terminated. Also, producers, gas-dynamically communicated with a pressure well on base of geophysical study, are transferred to calibration lines; pumping external gaseous agent into this pressure well is stopped. Yield of separation gas change and its composition are studied by means of on-line chromatographs at an installation of complex gas preparation. On base of obtained data there is evaluated response of producers transferred to calibration lines to termination of pumping into one of pressure wells.

EFFECT: maintaining accuracy for determination of filtration direction of external gaseous agent from pressure wells to producers eliminating changes in working process pattern of development of gas-condensate deposit.

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