Abstract：During offshore seismic streamer acquisition, the conception of common-shot-gather and supper-shot-gather stack can be built up by the aid of CDP gather stack technique, which can act as QC tool of offshore streamer acquisition, and discover and solve the following issues in time:①shot-gap resulted from not-shot or without receiving by channel cutoff; ②shot-gap or useless-shot resulted from appearing problem on receiving cable or spread cutoff; ③minor interference with period or phase fixed, for example, leakage; ④more serious interference like instrument crosstalk.
