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| | Abstract | | Conventional marine 3D seismic data acquisition system radiates a seismic wave from an energy source into subsurface, and then receives reflections coming back from subsurface by using planarly-deployed plural streamer cables to collect 3D subsurface structural image. The authors are developing a new shallow marine 3D seismic data acquisition system, which simultaneously radiates several different codes of seismic waves from planarly-deployed plural energy sources, and then receives reflections by using streamer cable(s). Subsequent wave-field separations of the simultaneous-shooting data provide the equivalent 3D seismic data as collected by the conventional system. This new system facilitates downsizing of survey vessel as well as observation system, resulting in improving operation efficiency and reducing cost. We conducted a field performance test of the source for the new system in November 2016, and then confirmed its applicability in shallow marine 3D seismic survey by simultaneous shooting. In this paper, we would like to introduce the concept of the new system and report some results of the field test. |
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