DETERMINATION OF UNDERGROUND GAS STORE TIGHTNESS Russian patent published in 2014 - IPC E21B47/10 G01M3/00 B65G5/00 

FIELD: oil-and-gas industry.

SUBSTANCE: in compliance with this method, seam is subjected to cycling, every cycle including gas injection therein with subsequent gas withdrawal. Cycling includes at least 10 cycles. Current seam pressure $$\left(P_t^f\right)$$ and gas withdrawal (or injection) volume are measures at regular intervals in every cycle. Measured parameters allowed for design pressure in underground storage facility $$\left(P_t^d\right)$$ is determined for facility operation without gas leaks and with leaks. Function (F) is defined as mean arithmetic value of $$\left(P_t^d\right)$$ deviations from $$\left(P_t^f\right)$$ obtained at every i^th measurement for operation without leaks and function (F_l) for operation with leaks. Given F_l<F, leaks are considered available.

EFFECT: simplified control, higher safety and reliability.

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