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The bottom line

The bottom line in terms of cost of the survey, is that the standard dense geometry requires 200 shots/km2 (50 shots/km and 4 receiver lines/km). For this model (100 km2), this means 20000 shots which is extremely high. The optimum design uses the dense parameters 156 km2 (50 shots/km and 3.125 receiver lines/km) only in zone 1, whose area is about 3.5 km2; uses the intermediate design of 148 km2 (50 shots/km and 2.95 receiver lines/km) only in zone 2 whose area is about 7.5 km2a; and uses the sparse geometry of 70 km2 (50 shots/km and 1.38 receiver lines/km) in the remaining 89 km2. This gives a total of about 8000 shots, less than half those of the standard geometry. This saving in the number of shots is obtained without compromising the image of the target reflector at any depth and without significantly upsetting the logistics of the acquisition.
next up previous print clean
Next: Discussion Up: Geometry with the Proposed Previous: Geometry with the Proposed
Stanford Exploration Project
7/8/2003