Title: Rock Physics And Seismic Characterisation Of Thin Clastic Reservoirs In Western Siberia
Abstract: Seismic characterization was carried out to reduce uncertainties associated to the reservoir<br>distributions in the 1_2 and 2 oil sands. The main targets were to determine the parameters that control<br>reservoir quality and seismic, and update the existing geological models. Reservoir quality variations and<br>sand thickness estimation in the interval 1_2 were among the key questions to address. The results of the<br>seismic modelling show that the presence of carbonate (both cement and stringers) acts as one of the main<br>controls on porosity and also on the seismic signal. Our Rock physics analysis also shows that a strong<br>relationship exists between P impedance and total porosity in the well logs. We inverted the amplitude<br>seismic volume to generate P impedance and used rock physics based regressions to compute a total porosity<br>volume, the correlations obtained with log data were higher than 90%. Porosity based reservoir distribution<br>maps were extracted for the 1_2 and 2 reservoirs. We also used a Neural Network algorithm as to identify<br>sedimentological features from seismic, used as additional support to the geological modelling. Finally, the<br>seismic property estimations and seismic facies classification maps were incorporated into the reservoir<br>Geomodel.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
Indexed In: ['crossref']
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