+2 votes

What is 4D seismic data?

asked Mar 24, 2014 in Geology by lulopez (2,220 points) | recategorized Mar 24, 2014 by lulopez

1 Answer

+2 votes
answered Mar 25, 2014 by Normandy (21,040 points) | selected Mar 25, 2014 by lulopez
Best answer
The 4D seismic method involves acquisition, processing, and interpretation of repeated seismic surveys over a producing hydrocarbon field with the aim of understanding the changes in the reservoir over time, particularly its behavior during production.

The goal is to take a three dimensional picture of the reservoir as a result of hydrocarbon production or injection of water or gas into the reservoir at different times, and time becomes the fourth dimension. A typical final processing product is a time-lapse datasets. The difference should be close to zero, except where reservoir changes have occurred.