Pseudospectral 3-D Migration of Common-Offset Vector Gathers - Highly Parallel Algorithm [Электронный ресурс]

Авторы: Lisitsa V.   (ИНГГ СО РАН)   Pleshkevitch A.     Vishnevsky D.   (ИНГГ СО РАН)   Levchenko V.     Moroz B.    
дата публикации: 2018
We present an original parallel algorithm for pre-stack migrati on based on the simultaneous solution of one-way wave equation (OWE) with multiple right-hand sides by means of the pseudospectral method. Presented approach allows us to migrate common-offset vector gathers by OWE migration. The algorithm implies multi-level of parallelism with the OWE is solved on GPU (one GPU for each subset of right-hand sides), images are constructed on CPU and stored in RAM (one cluster node for each image). Thus the algorithm the same functionality as modern Kirchhoff-based approaches but higher resolution and ability to deal with complex models. In contrary with RTM-like procedures, our approach a llows constructing common-offset vector seismic images directly.
первоисточник: 80th EAGE Conference and Exhibition 2018: Opportunities presented by the energy transition (Copenhagen, Denmark, 11-14 June 2018)
страницы: Th A10 05
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