Direct Reservoir Parameter Estimation Using Joint Inversion ofMarine Seismic AVA&CSEM Data

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A new joint inversion algorithm to directly estimate reservoir parameters is described. This algorithm combines seismic amplitude versus angle (AVA) and marine controlled source electromagnetic (CSEM) data. The rock-properties model needed to link the geophysical parameters to the reservoir parameters is described. Errors in the rock-properties model parameters, measured in percent, introduce errors of comparable size in the joint inversion reservoir parameter estimates. Tests of the concept on synthetic one-dimensional models demonstrate improved fluid saturation and porosity estimates for joint AVA-CSEM data inversion (compared to AVA or CSEM inversion alone). Comparing inversions of AVA, CSEM, and joint AVA-CSEM data over ... continued below

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Hoversten, G. Michael; Cassassuce, Florence; Gasperikova, Erika; Newman, Gregory A.; Rubin, Yoram; Zhangshuan, Hou et al. January 12, 2005.

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A new joint inversion algorithm to directly estimate reservoir parameters is described. This algorithm combines seismic amplitude versus angle (AVA) and marine controlled source electromagnetic (CSEM) data. The rock-properties model needed to link the geophysical parameters to the reservoir parameters is described. Errors in the rock-properties model parameters, measured in percent, introduce errors of comparable size in the joint inversion reservoir parameter estimates. Tests of the concept on synthetic one-dimensional models demonstrate improved fluid saturation and porosity estimates for joint AVA-CSEM data inversion (compared to AVA or CSEM inversion alone). Comparing inversions of AVA, CSEM, and joint AVA-CSEM data over the North Sea Troll field, at a location with well control, shows that the joint inversion produces estimated gas saturation, oil saturation and porosity that is closest (as measured by the RMS difference, L1 norm of the difference, and net over the interval) to the logged values whereas CSEM inversion provides the closest estimates of water saturation.

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  • Report No.: LBNL--56822
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/861249 | External Link
  • Office of Scientific & Technical Information Report Number: 861249
  • Archival Resource Key: ark:/67531/metadc785572

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  • January 12, 2005

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • May 5, 2016, 2:27 p.m.

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Hoversten, G. Michael; Cassassuce, Florence; Gasperikova, Erika; Newman, Gregory A.; Rubin, Yoram; Zhangshuan, Hou et al. Direct Reservoir Parameter Estimation Using Joint Inversion ofMarine Seismic AVA&CSEM Data, report, January 12, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc785572/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.