PROCESS OF SEARCH AND PROSPECTING FOR GAS AND OIL DEPOSITS IN COLLECTORS OF SECONDARY GENESIS ON ZONES OF ANGULAR AND STRATIGRAPHIC DISCORDS Russian patent published in 1996 - IPC

FIELD: geophysics, seismic prospecting. SUBSTANCE: seismic prospecting is performed by method of common deep point, seismograms are processed by standard graph assumed for territory, then additional processing is carried out by program of amplitude and frequency filtration. Anomalous zones of total damping of amplitude of seismic waves reflected from boundaries in deposits lying above surface of angular and stratigraphic discords above deposits of hydrocarbons are isolated. They are mapped over area with allowance for damping of amplitudes. They are identified as deposits of oil and gas. Within limits of isolated anomalous zones search and prospecting holes are sunk. First search hole is sunk in region of most intensive exhibition of damping of amplitudes of seismic waves. EFFECT: decreased extent of search drilling, increased factor of success of search, diminished duration of prospecting stage and selection of effective system of arrangement of production wells over fields. 1 dwg