Seismic time-lapse imaging using Interferometric least-squares migration

• Published in: SEG Technical Program Expanded Abstracts 2016
• Main Authors: Sinha, Mrinal, Schuster, Gerard T.
• Other Authors: Center for Subsurface Imaging and Fluid Modeling, Earth Science and Engineering Program, Physical Science and Engineering (PSE) Division
• Format: Conference Object
• Language: unknown
• Published: Society of Exploration Geophysicists 2016
• Subjects: least-squares migration; time-lapse; Norne field
• Online Access: http://hdl.handle.net/10754/625231; https://doi.org/10.1190/segam2016-13840065.1

One of the problems with 4D surveys is that the environmental conditions change over time so that the experiment is insufficiently repeatable. To mitigate this problem, we propose the use of interferometric least-squares migration (ILSM) to estimate the migration image for the baseline and monitor surveys. Here, a known reflector is used as the reference reflector for ILSM. Results with synthetic and field data show that ILSM can eliminate artifacts caused by non-repeatability in time-lapse surveys. The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. We thank the sponsors of the CSIM consortium for their support. We would also like to thank the high performance computing (HPC) center of KAUST for providing access to supercomputing facilities. We would like to thank Statoil (operator of the Norne field) and its license partners ENI and Petoro for the release of the Norne data. Further, we acknowledge the Center for Integrated Operations at NTNU for cooperation and coordination of the Norne Cases.