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- W2806385148 abstract "Summary We have improved the so-called QPSTM by introducing a dip-angle domain stationary-phase implementation. QPSTM compensates absorption and dispersion via an actual wave propagation path using effective Q parameters. However, this strongly degrades the resolution gained by the compensation and requires more computational effort than conventional PSTM. Our stationary-phase implementation improves QPSTM through the determination of an optimal migration aperture based on an estimate of the Fresnel zone. This significantly attenuates the noises and reduces the computational cost of 3D QPSTM. We have estimated the 2D Fresnel zone in terms of two dip angles through building a pair of 1D migrated dip angle gathers using PSTM. Our stationary-phase QPSTM was implemented as a two-stage process. First, we used conventional PSTM to obtain the Fresnel zones. Then, we performed QPSTM with the Fresnel-zone-based optimized migration aperture. We apply the QPSTM to the actual 3D seismic data, obtain higher resolution imaging results, and verify the practicability of the method." @default.
- W2806385148 created "2018-06-13" @default.
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- W2806385148 date "2018-06-11" @default.
- W2806385148 modified "2023-09-23" @default.
- W2806385148 title "Incorporating Stationary-Phase Implementation into QPSTM and Application in Daqing Oilfield" @default.
- W2806385148 doi "https://doi.org/10.3997/2214-4609.201800647" @default.
- W2806385148 hasPublicationYear "2018" @default.
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