Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Alexander Y. Rozhko"'
Autor:
Alexander Y. Rozhko
Publikováno v:
GEOPHYSICS. 86:MR133-MR147
Low-frequency shadows are frequently interpreted as attenuation phenomena due to partial saturation with free gas. However, several researchers have argued that shadows are not necessarily a simple attenuation phenomenon because low-frequency energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f35048ba3dd313b4abe5858d3f2cf28
https://doi.org/10.1190/geo2020-0685.1
https://doi.org/10.1190/geo2020-0685.1
Stimulating relative permeability changes by low-frequency elastic waves: Theory and lab experiments
Publikováno v:
Journal of Petroleum Science and Engineering
A model is presented to describe how low-frequency vibrations can induce changes to relative permeabilities in dual-porosity dual-permeability rocks. We show that a combination of two physical processes may cause this effect: 1) the wave-induced two-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47d3dd0aad1422a2153494e388d4d9c5
https://hdl.handle.net/11250/3041839
https://hdl.handle.net/11250/3041839
Autor:
Alexander Y. Rozhko
Publikováno v:
Geophysical Prospecting
It is evident from the laboratory experiments that shear moduli of different porous isotropic rocks may show softening behaviour upon saturation. The shear softening means that the shear modulus of dry samples is higher than of saturated samples. She
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aae370476a8193436848d00a24d15459
https://doi.org/10.1111/1365-2478.12864
https://doi.org/10.1111/1365-2478.12864
Autor:
Alexander Y. Rozhko
Publikováno v:
Geophysical Prospecting
A key task of exploration geophysics is to find relationships between seismic attributes (velocities and attenuation) and fluid properties (saturation and pore pressure). Experimental data suggest that at least three different factors affect these re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3dfd26d7cac16da106681dc873a4660
https://doi.org/10.1111/1365-2478.12782
https://doi.org/10.1111/1365-2478.12782
Autor:
Andreas Bauer, Alexander Y. Rozhko
Publikováno v:
Geophysical Prospecting. 67:913-934
The effect of surface phenomena occurring at the interfaces between immiscible fluids and a solid on the seismic attributes of partially saturated rocks has not yet been fully studied. Meanwhile, over the past two decades considerable progress has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c90995490e66f19277b0dd9a4569e66b
https://doi.org/10.1111/1365-2478.12653
https://doi.org/10.1111/1365-2478.12653
Autor:
Alexander Y. Rozhko
Publikováno v:
GEOPHYSICS. 85:X1-X2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca8260bf499cf28d2725db6aa9c1b7ae
https://doi.org/10.1190/geo2020-0561.1
https://doi.org/10.1190/geo2020-0561.1
Autor:
Alexander Y. Rozhko
Publikováno v:
Journal of Geophysical Research (JGR): Solid Earth
Frequency dispersion is a well-known effect in geophysics, which means that waves of different wavelengths propagate at different velocities. Amplitude dispersion is a less-known effect, which means that waves of different amplitudes propagate at dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fd48cb68c64495dbaf9d1c5a46a3cac
https://hdl.handle.net/11250/3048295
https://hdl.handle.net/11250/3048295
Autor:
Alexander Y. Rozhko
Publikováno v:
Journal of Petroleum Science and Engineering. 146:1158-1172
Two-phase fluid flow in tight rocks containing cracks is not fully understood. Published experimental studies performed on water-saturated tight rocks often associate gas flow with instabilities. A common observation is that gas begins to flow once i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d91f2e10bcd3979d1f24e7304b7c803
https://doi.org/10.1016/j.petrol.2016.08.018
https://doi.org/10.1016/j.petrol.2016.08.018
Autor:
Alexander Y. Rozhko
Publikováno v:
Proceedings.
Summary The effect of wettability and interface menisci between immiscible fluids on seismic properties of partially-saturated rocks is not fully understood. Two competing processes are taking place on the interfaces between gas, liquid and solid: 1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f61466ad7afa1fada989fde004825108
https://doi.org/10.3997/2214-4609.201801545
https://doi.org/10.3997/2214-4609.201801545
Publikováno v:
Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26208c2114c850244cc2fd4d9267079d
https://doi.org/10.3997/2214-4609.201801132
https://doi.org/10.3997/2214-4609.201801132