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The Seismic Waveform Indicator Inversion Method and Application in Prediction Sandstone at High Water-Cut Oilfield
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, First EAGE Conference on Seismic Inversion, Oct 2020, Volume 2020, p.1 - 5
Abstract
We applied inversion method of seismic waveform indicator to obtain sandstone distribution in time domain by incorporating both well-log data and seismic data in an area of dense wells in B3D block in Changyuan oil field, to get the accurate distribution of channel-sand between wells. Seismic waveform indicator method is to extract special characteristics of representing certain strata features and combinations patterns from seismic waveforms and well logs, instead of obtaining variogram function based on some wells in geostatistical inversion approach. Comparing the two different inversion methods of waveform indicator and geostatistics, it showed that the former has more reliably high spatial resolution, and the thickness of sand body over 2m could be effectively identified at present well pattern conditions. It proved that this method is effective for the reservoir prediction in continental multilayer heterogeneous thin interbedded reservoir.