Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Reda Baina"'
Autor:
Raphael Valensi, Reda Baina
Publikováno v:
SEG Technical Program Expanded Abstracts 2019.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ba842d6e2cad3ad5be167f5b5c97d93
https://doi.org/10.1190/segam2019-3216528.1
https://doi.org/10.1190/segam2019-3216528.1
Publikováno v:
Geophysical Prospecting. 64:129-142
We propose a method for imaging small‐scale diffraction objects in complex environments in which Kirchhoff‐based approaches may fail. The proposed method is based on a separation between the specular reflection and diffraction components of the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::402f4ac4240752692d1bfb523efb18ce
https://doi.org/10.1111/1365-2478.12280
https://doi.org/10.1111/1365-2478.12280
Publikováno v:
SEG Technical Program Expanded Abstracts 2017.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bfb7d4f2b44610cf9f4dc225f2939a3
https://doi.org/10.1190/segam2017-17735438.1
https://doi.org/10.1190/segam2017-17735438.1
Publikováno v:
Geophysical Prospecting. 56:613-625
Depth velocity model building remains a difficult step within the seismic depth imaging sequence. Stereotomography provides an efficient solution to this problem but was limited until now to a picking of seismic data in the prestack time un-migrated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f61d0e083b01af1e792f56a94ea3a6ed
https://doi.org/10.1111/j.1365-2478.2008.00699.x
https://doi.org/10.1111/j.1365-2478.2008.00699.x
Publikováno v:
GEOPHYSICS. 73:VE13-VE23
Velocity-model estimation with seismic reflection tomography is a nonlinear inverse problem. We present a new method for solving the nonlinear tomographic inverse problem using 3D prestack-depth-migrated reflections as the input data, i.e., our metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae8621a6649d0944629281799e6de15d
https://doi.org/10.1190/1.2956427
https://doi.org/10.1190/1.2956427
Publikováno v:
Geophysical Journal International. 170:725-736
SUMMARY We present the extension of stereotomography to P- and S-wave velocity estimation from PP- and PS-reflected/diffracted waves. In this new context, we greatly benefit from the use of locally coherent events by stereotomography. In particular,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c03c7fb47187dee75f7e3fd3c54a4e4b
https://doi.org/10.1111/j.1365-246x.2007.03439.x
https://doi.org/10.1111/j.1365-246x.2007.03439.x
Autor:
Veronique Duprat, Reda Baina
Publikováno v:
SEG Technical Program Expanded Abstracts 2015.
A true amplitude reverse time migration (RTM) algorithm is formulated for the common shot prestack depth migration (PSDM). This formulation is borrowed from the past effort to design true amplitude Kirchhoff /Born PSDM in the frame of asymptotic theo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb3dcc35ab3139212f64c27062944e54
https://doi.org/10.1190/segam2015-5796860.1
https://doi.org/10.1190/segam2015-5796860.1
Publikováno v:
SEG Technical Program Expanded Abstracts 2015.
Stacking is of paramount importance in seismic processing to improve the signal to-noise ratio (S/N) and the imaging quality of seismic data. The conventional stacking method that averages equally a collection of input traces cannot robustly suppress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c216c5727e6ba79b80e848e98263de4b
https://doi.org/10.1190/segam2015-5860978.1
https://doi.org/10.1190/segam2015-5860978.1
Publikováno v:
Geophysical Prospecting. 52:671-681
Most methods for velocity macromodel estimation require considerable operator input, mainly concerning the regularization and the picking of events in the data set or in the migrated images. For both these aspects, slope tomography methods offer inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2853be19074a16e9b82dcee11460c662
https://doi.org/10.1111/j.1365-2478.2004.00440.x
https://doi.org/10.1111/j.1365-2478.2004.00440.x
Publikováno v:
The Leading Edge. 21:1237-1241
Although amplitude versus angle (AVA) analysis is currently performed on unmigrated prestack data, there is increasing evidence that more reliable and better resolved AVA attributes can be obtained by inversion after prestack migration, either in tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51065999a78a90c421274ab0868c7869
https://doi.org/10.1190/1.1536141
https://doi.org/10.1190/1.1536141