Method for determining the extent of subsurface reaction...

Details Method for determining the extent of subsurface reaction... Method for determining the extent of subsurface reaction...

G - Physics

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G01V 1/28 (2006.01) E21B 43/243 (2006.01) E21B 47/10 (2006.01) E21B 49/00 (2006.01) G01S 5/22 (2006.01) G01V 1/36 (2006.01)

Patent

CA 1152628

A METHOD FOR DETERMINING THE EXTENT OF SUBSURFACE REACTION INVOLVING ACOUSTIC SIGNALS (D#71,200-DTA-144-F) ABSTRACT A method determines the extent of subsurface reactions in which random acoustic signals are radiated from a whole area covered by the reaction or from a boundary region, hereafter termed reaction front, between largely undisturbed rocks and those already covered by the reaction. The signals are recorded by at least two receivers posi- tioned at different locations outside the reaction area. The recorded signals are crosscorrelated as a function of a time shift between the recorded signals so that at least one surface confining the reaction area is determined from the crosscorrelation. I

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