WELL SEISMIC SURVEY Russian patent published in 2013 - IPC G01V1/40 E21B43/26 E21B47/14 

FIELD: physics.

SUBSTANCE: disclosed is a well seismic survey method which involves detecting seismic vibrations at receiving points lying in a fixed depth interval, exciting vibrations from excitation points lying in different azimuths from the projection on the earth's surface of the centre of the depth interval at distances from the projections that are comparable with the depth interval. Excitation and detection of vibrations is carried out before and after hydraulic fracturing in the depth interval. Detection of vibrations after hydraulic fracturing is carried out with a probe with tool determination of spatial orientation of seismic receivers contained therein. Vibration excitation points are installed on a circle, the centre of which is the projection of the centre of the depth interval on the earth's surface. Configuration of non-uniformity is determined from the azimuthal change in kinematic and dynamic seismic parameters determined in the depth interval before and after hydraulic fracturing.

EFFECT: high accuracy of determining the extent of a fractured zone lying in the vicinity of the investigated depth interval.

3 cl, 1 dwg