Download e-book for iPad: 3D Seismic Imaging by Biondo L. Biondi

By Biondo L. Biondi

ISBN-10: 093183046X

ISBN-13: 9780931830464

ISBN-10: 1560801379

ISBN-13: 9781560801375

Seismic photos are the most important to contemporary exploration and reservoir tracking. '3D Seismic Imaging provides primary recommendations and state of the art equipment for imaging mirrored image seismic info. The ebook coherently provides the most elements of seismic imaging - data-acquisition geometry, migration, and pace estimation - by way of exposing the hyperlinks that intertwine them. The booklet emphasizes graphical realizing over theoretical improvement. numerous artificial and box information examples illustrate the presentation of mathematical algorithms. the amount incorporates a DVD that features a subset (C3-narrow-azimuth vintage information set) of the SEG-EAGE salt info set and of the corresponding speed version. The DVD additionally features a whole set of PDF slides that may be used to coach the fabric provided within the publication. additionally Available:

Geophysics within the Affairs of Mankind - ISBN 1560800879
Seismic True-Amplitude Imaging - ISBN 1560801433

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Extra resources for 3D Seismic Imaging

Example text

However, these methgrated images. 21 substantially rms velocity function. It is the best image that we can oblarger. tain by time imaging, so we use it as a reference. Figure 11 shows the result of migrating by zero-offset time migration the data cube obtained by NMO + stack Poststack imaging of the (Figure 8). As we expect, the steeply dipping salt flanks are SEG-EAGE salt data set imaged poorly. The image of the steeply dipping salt flank To illustrate the capabilities and limitations of poststack on the left can be improved substantially by applying DMO imaging, we analyze the results obtained by processing a before stacking.

Figure 8 shows the zero-offset cube obtained by NMO + DMO ∝ κDMO × (Nt × Nxm × Nym) × (Nf × Nh / 2 ). 21) stack. The reflections from the steeply dipping salt flanks that are oriented along the inline direction (CMP X) have been strongly attenuated, whereas the reflections oriented This is not negligible, but still it is considerably less than along the strike direction (CMP Y) have been stacked propthe cost of full prestack-migration operators. The reduced erly. That result is consistent with theoretical analysis of computational cost derives from the 2D nature of the DMO both the azimuthal dependency of stacking velocity from operator as well as from its limited aperture.

5) V generalization of Cohen and Bleistein’s results to complex media. Schleicher et al. (1993) reached results equivalent to Figure 1 shows the zero-offset hyperboloid in a 3D perthose of the previous authors, but their derivation was based spective. The vertical axis (identified by Z in the axis triplet strictly on ray theory and on the results of dynamic ray tracvisible at the lower left corner of the figure) is the time axis, ˇ ing (Cervený and Pˇsenˇcík, 1983). Bleistein and Gray (2001) whereas the horizontal axes are the midpoint axes.

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3D Seismic Imaging by Biondo L. Biondi

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