The complete survey is composed of 20 receiver lines (in line direction) with a 15 m distance between adjacent lines. Each line is composed of 48 single geophones with 5 m between adjacent geophones.

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  Step 1: Location map.
  Figure shows the location of the seismic lines and of the wells. In well C1, a VSP has been recorded. Acoustic data have been recorded in wells C1, MP5, MP6, M08 and M09. The results obtained in in-line 21 and 31 and cross line 24 will be shown. Arrows in red and green show the in line extension of the area covered by the 3D survey and the 2D survey.


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  Step 2: 3D reflection survey: 3D cross spread.
  Three shot points in the cross line direction are fired at distances of 40, 50 and 60 m from the receiver line under consideration. The cross spread layout allows to cover the central part of the area in single fold. The bin size is 2.5 m in the in line direction and 5 m in the cross line direction.


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  Step 3: Example of a shot point recorded on a cross spread.
  The picked times will be used for the tomography.


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  Step 4: 2D reflection survey: 2D end-on spread.
  In the in line direction, a direct shot and a reverse shot are recorded per receiver line. The end-on spread layout allows to cover the complete area in single fold. The bin size is 2.5 m in the in line direction and 15 m in the cross line direction.


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  Step 5: Example of direct and reverse shots recorded on an end-on spread.
  The picked times will be used for the tomography.