In the Wheeler domain graphics transformed by seismic data, the author analyzed the system tracts and the Datum Plane Cycle of lake delta, and found the method how to use seismic data to divide sedimentary sequences accurately, which made up for the low horizontal resolution of single-well Sequence. On this basis, the author established the interpretation model of sedimentary sequence of the lake delta in the wheeler domain graphics. The method achieved good application effect in the exploration of dongying delta, and it has widely applicability in the division of sedimentary sequence of all lake deltas.


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