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Application of PP-PS Joint Inversion in Thin Shale Interbed Prediction
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
The prediction of thin interbed is an international problem in reservoir geophysics. This paper introduces the application of PP-PS joint inversion in thin shale interbeds prediction of the Junin field, Venezuela. Based on Petrophysical study, contact model with the effect of cementation is utilized to build the seismic rock physics model. S impedance and Vp/Vs were selected to be the sensitive elastic parameters to identify the shale interbeds in the unconsolidated sandstone reservoir. The PP-PS pre-stack joint inversion technology improves the accuracy of inversion result and distinguishes the thin shale interbeds effectively. Through statistics of 30 wells, it shows that 83% of the prediction matches the drilling results.