SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

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Description

Wave-induced variations of pore pressure in a partially-saturated reservoir result in oscillatory liquid flow. The viscous losses during this flow are responsible for wave attenuation. The same viscous effects determine the changes in the dynamic bulk modulus of the system versus frequency. These changes are necessarily linked to attenuation via the causality condition. We analytically quantify the frequency dependence of the bulk modulus of a partially saturated rock by assuming that saturation is patchy and then link these changes to the inverse quality factor. As a result, the P-wave attenuation is quantitatively linked to saturation and thus can serve as ... continued below

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46 pages

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Walls, Joel; Taner, M.T.; Mavko, Gary & Dvorkin, Jack April 1, 2002.

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Description

Wave-induced variations of pore pressure in a partially-saturated reservoir result in oscillatory liquid flow. The viscous losses during this flow are responsible for wave attenuation. The same viscous effects determine the changes in the dynamic bulk modulus of the system versus frequency. These changes are necessarily linked to attenuation via the causality condition. We analytically quantify the frequency dependence of the bulk modulus of a partially saturated rock by assuming that saturation is patchy and then link these changes to the inverse quality factor. As a result, the P-wave attenuation is quantitatively linked to saturation and thus can serve as a saturation indicator.

Physical Description

46 pages

Notes

OSTI as DE00834454

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  • Other Information: PBD: 1 Apr 2002

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  • Report No.: NONE
  • Grant Number: FC26-01BC15356
  • DOI: 10.2172/834454 | External Link
  • Office of Scientific & Technical Information Report Number: 834454
  • Archival Resource Key: ark:/67531/metadc785956

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • April 1, 2002

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

Description Last Updated

  • Jan. 3, 2017, 1:26 p.m.

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Walls, Joel; Taner, M.T.; Mavko, Gary & Dvorkin, Jack. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION, report, April 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc785956/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.