Internal Multiple Attenuation To Reduce the Risk in Quantitative Interpretation: A Case Study on Asgard Field Smørbukk

Sadikhov, Emin (Equinor ASA) | Ramirez, Adriana Citlali (Equinor ASA) | Sigernes, Lill-Tove W. (Equinor ASA) | Aaker, Ole Edvard (AkerBP (Formerly Equinor ASA /Norwegian University of Science and Technology)) | Arntsen, Børge (Norwegian University of Science and Technology)


Summary When interpreting exploration and production datasets there can be uncertainty related to falsely identifying multiples as primaries. This can be experienced in exploration areas with limited well control and velocity information, and in more mature producing areas where we extract information from seismic data for drilling and production decisions. As a result, falsely interpreted multiples can affect both our structural and stratigraphic understanding as well as interfere with reservoir analysis, volume estimation and other relevant production decisions. This paper describes modeling of internal multiples using an inverse scattering series (ISS) algorithm and subsequent attenuation with an aim to improve data quality and quantitative understanding of Åsgard field Smørbukk. Introduction Generally, multiples can be subdivided into two main groups: free surface and internal multiples.