METHOD AND SYSTEM FOR MONITORING OF CAVITIES FILLED WITH LIQUID IN THE MEDIUM ON THE BASIS OF BOUNDARY WAVES THAT ARE DISTRIBUTED ON THEIR SURFACES Russian patent published in 2008 - IPC G01N29/04 G01V1/40 

FIELD: technological processes; measurement.

SUBSTANCE: invention is related to monitoring of cavities filled with liquid in different mediums. Crack oscillations are registered. Frequencies v⁽ⁿ⁾ of standing boundary waves are determined (n - integer), which are distributed along surfaces of at least one crack filled with liquid. Group speed V(ν⁽ⁿ⁾,w) of boundary wave is determined with account of medium and liquid properties and width of crack w. Typical size L is calculated along distribution of stationary boundary wave by formula . System consists of facility for liquid pressure registration in injection well, facility of data processing for determination of frequencies of standing boundary waves, calculation of group speed of boundary wave and calculation of crack typical size along distribution of stationary boundary wave, device for liquid pressure control, which allows to step-wise decrease or increase pressure and device for signal generation, which contains results of calculations.

EFFECT: provision of efficient monitoring of cavities filled with liquid, which may be performed in real time.

13 cl, 6 dwg