Determining the Angular Parameters of the Seismic Boundary Occurrence Based on the Use of Fixed Reflection Points

A method for determining the local angular parameters of reflecting boundaries from the data of profile observations of CDP-2D is considered. Information about the angles of the boundaries is supposed to be used in the new technology of seismic imaging of the geological environment. To solve this problem, a special array of seismic traces corresponding to the same reflection point on the boundary is formed in each of the common calculation points from the array of seismograms obtained by the standard technology of multiple overlaps. After the introduction of special kinematic corrections into these traces, taking into account the difference in the length of the reflected wave trajectories, it is possible to perform a horizontal summation of the amplitudes or energies of the traces and attribute this result to the selected fixed point of reflection. Looking through the possible different values of the angle of inclination of the boundary and the depth to it, it is possible to localize the position of the maximum energy for specific values of depth h and angle φ. The maximum energy expansion will correspond to the actual slope angle of each reflecting boundary for the selected profile point. a graph showing the dependence of the energy of the total traces on the depth and angle, by analogy with the vertical velocity spectra, we will call the vertical spectrum of the angles of inclination of seismic boundaries. Examples are given of the spectra of the slope angles of the boundaries obtained on the model seismic field and the graphs of the slope angles of the boundaries at this point of the profile, showing the principal possibility of determining the angles of inclination of the boundaries with sufficient accuracy.