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- W2460196998 abstract "In coal exploration, seismic strong reflections from overlying strata may shield the propagation of seismic waves into deep parts, resulting in poor imaging quality for deep targeted area. In fact, seismic wave energy will be lost and velocities will undergo dispersion after passing through viscoelastic medium. Therefore, a method is proposed for restoring the absorbed energy, namely Q compensation. The process of absorption compensation can be decomposed into two parts, with one from zero offset and the other from finite offset. In order to improve the accuracy of absorption compensation for finite offset, we include sixth order term in polynomial expansion to form a high precision traveltime calculation formula in VTI medium. Field data application shows that the proposed prestack viscoelastic migration method can eliminate shielding effect and improve vertical resolution, which has important values in resolving the hidden seams. Keywords—prestack migration; Q compensation; traveltime calculation; VTI medium" @default.
- W2460196998 created "2016-07-22" @default.
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- W2460196998 date "2016-01-01" @default.
- W2460196998 modified "2023-09-24" @default.
- W2460196998 title "3D Seismic prestack viscoelastic migration method based on high-precision traveltime calculation in VTI medium" @default.
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- W2460196998 doi "https://doi.org/10.2991/iceeg-16.2016.61" @default.
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