IMPROVEMENT IN ACCURACY AND COMPUTATION TIME FOR ELASTIC FINITE DIFFERENCE MODELLING.

In hydrocarbon exploration, seismic reflection imaging is used to image the subsurface. However, in complex areas such as shallow gas overburden, highly faulted zone, coal or pre-salt/pre-carbonate, the imaging of these areas appears to be challenging. Gas wipe out, or gas masking in particularly, is a very common issue in Malaysia, where more than 45% of Malaysian fields is suffering from gas clouds masking. This indirectly caused millions of barrels of oil remained undiscovered due to poor imaging.