Analysis of Velocity dispersion and Attenuation in Double-scale Model
In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave velocity and attenuation coefficient curves show double-step and double-peak, respectively. With the increase of gas saturation, the velocity step of...
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| Published in | IOP conference series. Earth and environmental science Vol. 651; no. 3; pp. 32066 - 32071 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
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IOP Publishing
01.02.2021
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| Abstract | In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave velocity and attenuation coefficient curves show double-step and double-peak, respectively. With the increase of gas saturation, the velocity step of mesoscopic scale gradually decreases and disappears. The attenuation peak decreases and the characteristic frequency shifts to high frequency until it coincides with the characteristic frequency of the micro-scale. The superposition of the attenuation peak makes the total attenuation peak increase. And there is a great difference in fluid properties when oil, gas and water are mixed in the reservoir, so the double-scale model can better predict the fluid saturation in the reservoir and better monitor the fluid. |
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| AbstractList | In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave velocity and attenuation coefficient curves show double-step and double-peak, respectively. With the increase of gas saturation, the velocity step of mesoscopic scale gradually decreases and disappears. The attenuation peak decreases and the characteristic frequency shifts to high frequency until it coincides with the characteristic frequency of the micro-scale. The superposition of the attenuation peak makes the total attenuation peak increase. And there is a great difference in fluid properties when oil, gas and water are mixed in the reservoir, so the double-scale model can better predict the fluid saturation in the reservoir and better monitor the fluid. Abstract In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave velocity and attenuation coefficient curves show double-step and double-peak, respectively. With the increase of gas saturation, the velocity step of mesoscopic scale gradually decreases and disappears. The attenuation peak decreases and the characteristic frequency shifts to high frequency until it coincides with the characteristic frequency of the micro-scale. The superposition of the attenuation peak makes the total attenuation peak increase. And there is a great difference in fluid properties when oil, gas and water are mixed in the reservoir, so the double-scale model can better predict the fluid saturation in the reservoir and better monitor the fluid. |
| Author | Zhou, Dan Sun, Zhentao |
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| Cites_doi | 10.1029/2006JB004592 10.1190/1.1440958 10.1190/tle33060656.1 |
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| References | Batzle (EES_651_3_032066bib3) 2014; 33 Mavko (EES_651_3_032066bib1) 1979; 44 Masson (EES_651_3_032066bib2) 2007; 112 Ba (EES_651_3_032066bib5) 2010; 40 Ba (EES_651_3_032066bib4) 2012; 55 |
| References_xml | – volume: 40 start-page: 1398 year: 2010 ident: EES_651_3_032066bib5 article-title: Wave propagation theory in double-porosity medium and experiment analysis on seismic responses [J] publication-title: SCIENTA SINICA Phys, Mech & Astron contributor: fullname: Ba – volume: 112 year: 2007 ident: EES_651_3_032066bib2 article-title: Poro-elastic finite difference modelling of seismic attenuation and dispersion due to mesoscopic-scale heterogeneity [J] publication-title: Journal of Geophysical Research-Solid Earth doi: 10.1029/2006JB004592 contributor: fullname: Masson – volume: 55 start-page: 219 year: 2012 ident: EES_651_3_032066bib4 article-title: Velocity dispersion and attenuation of P waves in partially-saturated rocks: Wave propagation equations in double-porosity medium [J] publication-title: ChineseJ. Geophys. contributor: fullname: Ba – volume: 44 start-page: 161 year: 1979 ident: EES_651_3_032066bib1 article-title: Wave attenuation in partially saturated rocks [J] publication-title: Geophysics doi: 10.1190/1.1440958 contributor: fullname: Mavko – volume: 33 start-page: 656 year: 2014 ident: EES_651_3_032066bib3 article-title: Seismic frequency loss mechanisms-Direct observation [J] publication-title: The Leading Edge doi: 10.1190/tle33060656.1 contributor: fullname: Batzle |
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| Snippet | In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave velocity... Abstract In the two states of oil-gas and water-gas, the wave velocity and attenuation coefficient are numerically simulated by double-scale model. The P-wave... |
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| SubjectTerms | Attenuation coefficient Attenuation coefficients Double-scale model Model testing P waves Reservoirs Saturation Scale models Velocity Velocity dispersion Wave attenuation Wave velocity |
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| Title | Analysis of Velocity dispersion and Attenuation in Double-scale Model |
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