Least-squares reverse time migration (LSRTM) is a common imaging technique that geophysicists have been using to obtain high-resolution images. Nevertheless, the high computational cost shifted the focus of researchers to the target-oriented approach. In this approach, by limiting the computational grid to a relatively smaller region, the computational cost of the LSRTM is significantly reduced. However, without an accurate model of the overburden, which can model all orders of overburden-generated multiples, the image produced by this approach suffers from overburden-related artifacts. Recently, Marchenko double-focusing presented itself as a powerful data-driven tool that can focus the recorded wavefield above the target region and eliminate the effects of the overburden-related multiple reflections. This paper proposes a forward modeling and inversion algorithm based on Marchenko double-focusing for target-oriented LSRTM to produce artifact-free high-resolution images.
|Title of host publication||83rd EAGE Annual Conference & Exhibition|
|Number of pages||5|
|Publication status||Published - 2022|
|Event||83rd EAGE Annual Conference & Exhibition - Madrid, Spain|
Duration: 6 Jun 2022 → 9 Jun 2022
|Conference||83rd EAGE Annual Conference & Exhibition|
|Period||6/06/22 → 9/06/22|