TN409 : Resolve problems seismic imaging of complex structures by reverse time migration (RTM) method , A case study in a west of Iran
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2014
Authors:
Abstarct: The ultimate goal of Seismic Data surveying and processing is achieving the images more accurate and realistic from subsurface phenomenon. One phase of data processing is; migrating seismic data including; back surgery events recorded diffraction peak of their migration not as a result of transmission events reflects their place integer and build a picture of structures inside the ground.
Reverse time migration baxsed on mutual wave equation in seismic sections of the structures of complex migration comparing with other methods, which are baxsed on one-way wave equation; presents more convenient and more precise imaging of subsurface structures. However, in high impedances and complicated geological structure, up going and down going wave fields can not be disprated. In these cases, the cross-correlation leads to a decreasing in the low artificial frequency which makes the better resolution of the wave source and the receiver.
In this research accuracy of performance in processing and visualization methods for reverse time migration seismic data in complex structures is studied. For these purpose, velocity model of seismic data by using artificial seismic data from two regions: Sigsbee 2A and BP-2004 By applying Kirchhoff time migration and reverse time migration seismic section are studied and obtained results were compared.
Also Processing methods are also discussed in this study on true l seismic data in two regions: in the west of Iran and in the west of Germany, was applied unfortunately, due to the lack of advanced computational hardware and softwareun acceptable results were obtained.
Keywords:
#seismic imaging #Reverse Time Migration #cross correlation #Wavefield Extrapolation. Link
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: