Numerical Modeling of Marine Seismology in the Arctic Region During Deposit Dissolution due to Oil Migration
DOI:
https://doi.org/10.14529/jsfi240403Keywords:
numerical modeling, oil migration, marine seismology, grid-characteristic method, Arctic regionAbstract
As the Arctic region requires costly and difficult to access surveys of the ground, numerical modeling proves to be an effective way to study occurring processes in the area. Moreover, the simulations of the seismic exploration can help identify the main signs of oil migration which is crucial for the risk assessment of the deposit development. Therefore, the main goal of this work is to conduct the forward modeling of the seismology in the offshore areas of the region in order to determine the indicators of such processes. The present study, in particular, is aimed at recreating of basic features of the region such as a layered ground with the gradual change in material parameters and inclusion of a permafrost sheet. Furthermore, the boundaries between layers are considered to be curvilinear. This complex problem was effectively solved using the gridcharacteristic method which allows for the accelerating of the calculations using OpenMP. As a result of the computations, the reconstructed wave phenomena is analyzed based on the obtained wave patterns and synthesized seismograms. The change in the responses from the oil reservoir in the process of draining is identified which can further help interpret real measurements.
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