Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Boris Kashtan"'
Publikováno v:
Studia Geophysica et Geodaetica. 63:538-553
Imaging of small-scale heterogeneities is important for the geological exploration in complex environments. It requires a processing sequence tuned to high-resolution model building. Conventional methods which use refractions or reflections might fac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b102bafe26fe599657945933956d72f1
https://doi.org/10.1007/s11200-019-0733-6
https://doi.org/10.1007/s11200-019-0733-6
Autor:
Irina O. Korsakova, Pinbo Ding, Dmitry Popov, Viacheslav Polovkov, Tatiana Chichinina, Boris Kashtan, Vladimir Troyan
Publikováno v:
Vestnik of Saint Petersburg University. Earth Sciences. 64:454-465
Special automated equipment is constructed for ultrasonic velocity measurements at various incidence angles of waves that is necessary for estimation of anisotropy parameters of rocks. The equipment includes hydraulic press for simulation of vertical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64a7f2ee6c1a41ca222de058eee2469a
https://doi.org/10.21638/spbu07.2019.305
https://doi.org/10.21638/spbu07.2019.305
Publikováno v:
Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2021, ⟨10.1093/gji/ggab077⟩
Geophysical Journal International, Oxford University Press (OUP), 2021, ⟨10.1093/gji/ggab077⟩
SUMMARY The differential effective medium (DEM) theory studied in this paper describes elastic moduli of a fractured medium with help of differential equations, where crack density is the independent variable and fluid saturation is a parameter. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85f1ef6b2d2a38dc24654f7082146685
https://hal.archives-ouvertes.fr/hal-03225685/file/ggab077_unedited.pdf
https://hal.archives-ouvertes.fr/hal-03225685/file/ggab077_unedited.pdf
Publikováno v:
GEOPHYSICS. 83:Q15-Q24
Virtual source redatuming is a data-driven interferometric approach that relies on constructive and destructive interference, and as a result it is quite sensitive to input seismic trace amplitudes. Land surveys are prone to amplitude changes that ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06fedc3b2a9c5b1e449c41b46e59d632
https://doi.org/10.1190/geo2017-0163.1
https://doi.org/10.1190/geo2017-0163.1
Publikováno v:
SEG Technical Program Expanded Abstracts 2019.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da25df87ec1c78718446e42858ada2a1
https://doi.org/10.1190/segam2019-3216391.1
https://doi.org/10.1190/segam2019-3216391.1
Publikováno v:
Geophysical Prospecting. 65:941-955
Surface waves are often used to estimate a near-surface shear-velocity profile. The inverse problem is solved for the locally one-dimensional problem of a set of homogeneous horizontal elastic layers. The result is a set of shear velocities, one for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4d1820b3d1bfaff59f837c9c94db265
https://doi.org/10.1111/1365-2478.12450
https://doi.org/10.1111/1365-2478.12450
Publikováno v:
Proceedings.
Summary Data quality is extremely important for successful time-lapse experiments. Time-lapse seismic requires estimation of 4D changes that are often smaller than the noise level. Hence, data processing and noise suppression are the key steps for ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc560ce3e827f6ebeb0e773b596b1328
https://doi.org/10.3997/2214-4609.201801530
https://doi.org/10.3997/2214-4609.201801530
Publikováno v:
GEOPHYSICS. 80:U73-U86
We have developed an original method for migration velocity analysis for vertical seismic profile (VSP) data. The method is based on VSP imaging with the primary reflected data and surface-related multiples. Velocity updates are carried out by matchi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10bdf573661a98dc71c5d695479be831
https://doi.org/10.1190/geo2015-0107.1
https://doi.org/10.1190/geo2015-0107.1
Publikováno v:
GEOPHYSICS. 80:Q15-Q26
Time-lapse surface seismic monitoring typically suffers from different sources of nonrepeatability related to acquisition imperfections as well as due to complexity of the subsurface. Placing sources and receivers below the surface can improve seismi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f05f2466c191b022218d9c9af80713dc
https://doi.org/10.1190/geo2014-0373.1
https://doi.org/10.1190/geo2014-0373.1
Publikováno v:
SEG Technical Program Expanded Abstracts 2017.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4b3906508517f03f2ae662fe5192d70
https://doi.org/10.1190/segam2017-17794193.1
https://doi.org/10.1190/segam2017-17794193.1