SEISMIC PROSPECTING METHOD Russian patent published in 2006 - IPC G01V1/28 

FIELD: seismic prospecting.

SUBSTANCE: observation is made inside internal points of medium inside hole. After the wave field is registered, it is divided to incident and ascending reflected waves by subsequent subtraction of oscillations, which have different sign of apparent velocity. The filter is calculated on the base of field of incident waves which filter compensates changes in waves' shapes when the waves pass through medium to reach reflecting borders. From the field of ascending waves the filter is calculated which compensates changes in waves' shapes when passing from reflecting borders to Earth's surface. Combination of filters is used for restoration of wave shapes.

EFFECT: improved efficiency.

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