Near Surface Geophysics > 3D Imaging

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

Step 1: View of the experimental site.

Step 2: Implementation of a seismic line.

Step 3: Seismic source. The source is a weight dropper.