Peter Varnai - Houston TX Stefan Hussenoeder - Sugar Land TX Brian P. West - Houston TX John E. Eastwood - Bellaire TX Spyridon K. Lazaratos - Spring TX
Assignee:
ExxonMobil Upstream Research Company - Houston TX
International Classification:
G01V 136
US Classification:
367 47, 367 52, 367 59, 367 49, 702 14, 702 17
Abstract:
A method for assessing the suitability of seismic data for quantitative amplitude analysis, where the concern is excessive residual normal moveout (RNMO). The invention uses a near offset stack and a far offset stack, the time difference between the two, a mute pattern, a reflection shape assumption for the RNMO, and a waveform and frequency for the far stack traces to generate a formula that estimates far stack amplitude error caused by RNMO. The formula can be used to compensate the far stack amplitude where the error is not so great as to require reprocessing of the data. The method can also be applied to interpreted amplitude maps.