Meeting Location:
Schlumberger Facility
10001 Richmond Ave.
Houston, TX  77042

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Speaker: Pedro Alvarez, Rock Solid Images 

We present an example from the Hoop area of the Barents Sea showing a sequential quantitative integration approach to integrate seismic and CSEM attributes using a rock physics framework, which allows us to discriminate between commercial and non-commercial (residual) hydrocarbon saturations.  A dataset consisting of 2D GeoStreamer® seismic and towed streamer electromagnetic data that were acquired concurrently in 2015 by PGS provide the surface geophysical measurements used in this study. Two wells in the area: Wisting Central (7324/8-1) and Wisting Alternative (7324/7-1S) provide calibration for the rock physics modelling and the quantitative integrated analysis.  In the first stage of the analysis, we invert pre-stack seismic and CSEM data separately for impedance and anisotropic resistivity respectively.  We then apply the multi-attribute rotation scheme (MARS) to estimate rock properties from seismic data. This analysis verified that the seismic data alone cannot distinguish between commercial and non-commercial hydrocarbon saturations.  Therefore, in the final stage of the analysis we invert the seismic and CSEM derived properties within a rock physics framework. The inclusion of the CSEM-derived resistivity information within the inversion approach allows for the separation of these two possible scenarios. Result show excellent correlation with known well outcomes. 

Speaker Biography: Pedro Alvarez, Rock Solid Images 
Pedro Alvarez received a B.Sc. (2002) in geophysical engineering from the Universidad Central de Venezuela, and an M.Sc. (2007) in petroleum geophysics from a joint program between the Centro Superior de Formacion (Madrid) and the Heriot-Watt University (Edinburgh). He is a lead geoscientist at Rock Solid Images with more than 12 years of experience integrating and interpreting multiple geophysical and geological data in hydrocarbon reservoir characterization and exploration projects. His main area of expertise is the creation and application of different work flows for the qualitative and quantitative interpretation and integration of poststack, AVO, seismic inversion, and CSEM attributes. He has worked on projects in Venezuela, Colombia, Mexico, Alaska, Gulf of Mexico, Texas, Pennsylvania, Australia, West Africa, the Falkland Islands, West Africa, the Middle East, and Norway focused in different geological settings (clastic, carbonate and unconventional reservoirs). He is an author or coauthor of more than 20 papers presented in international conference or peer-review journals.Appointed by SEG as a 2016 Latin America Honorary Lecturer.

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