Method of reflection point correlation seismic surveying

Claim 1

A seismic exploration method with high spatial resolution comprising, locating a line of receivers in longitudinally spaced relation, locating a line of transmission sources in spaced relation to each other, generating seismic waves at each of said sources, controlling the transmission of said waves by said transmission sources, to provide wave transmission intervals between sources less than the time taken for the longest wave to travel through the medium to be explored from said transmission sources to said receivers and to provide wave transmission intervals between repetitions of each source at least equal to said time taken for said longest wave to travel from said transmission source to said receiver, receiving on the receivers signals produced by reflection of said waves at reflection points in said medium to be explored and recording said received signals, displacing said receivers and sources along the seismic line to be explored after each transmission of waves by a distance equal to the source spacing in such a manner that a source takes the place of a preceding source, processing said recorded signals by grouping all the recorded signals corresponding to the same reflection point, shifting in time each of said recorded traces with respect to the transmission instants of the corresponding source to place into coincidence the respective transmission instants of sources the seismic paths of which reach a predetermined reflection point, and adding all said shifted in time recorded traces relating to the same reflection point.