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Application of Iterative Inversion for Organic Rich Shale Prediction - A Case Study in Xiuwu Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Organic rich shale and non-organic rich shale are usually developed together in Xiuwu Basin, and well logging data reveals that they can be differentiated by integrated elastic attributes. However, previous explorations show that the pre-stack method is not satisfying due to the poor quality of seismic data in this area. Furthermore, it is always a difficult task to conduct an AV O inversion precisely due to two factors: severe influence of initial Vp/Vs model for linear AV O inversion and intensive tendency of easily falling into local optimization for non-linear AVO inversion. For a better organic rich shale prediction, an integrated pre-stack method including advanced data conditioning and iterative inversion is elaborately designed and successfully applied. Therefore, the proposed approach and its corresponding application are of significant importance to current knowledge for organic rich shale prediction.