Usually 3D seismic imaging requires a great amount of data and powerful computer. On the Experimental Site of Vesdun ( situated in the Cher region, central part of France), a 3D survey has been designed to obtain a 3D cube by recording a low amount of data. The example shows that an optimum choice of the seismic spread design and of signal processing tools ( filters and transformations) allows to process the recorded seismic data to obtain a significant 3D cube in multiple fold ( up to 22).
The high resolution 3D cube has revealed near surface seismic horizons between 50 and 200 ms