Seismic imaging of reservoir flow properties: Resolving waterinflux and reservoir permeability

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Methods for geophysical model assessment, in particuale thecomputation of model parameter resolution, indicate the value and thelimitations of time-lapse data in estimating reservoir flow properties. Atrajectory-based method for computing sensitivities provides an effectivemeans to compute model parameter resolutions. We examine the commonsituation in which water encroaches into a resrvoir from below, as due tothe upward movement of an oil-water contact. Using straight-forwardtechniques we find that, by inclusing reflections off the top and bottomof a reservoir tens of meters thick, we can infer reservoir permeabilitybased upon time-lapse data. We find that, for the caseof water influxfrom below, using multiple time-lapse 'snapshots' ... continued below

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Vasco, D.W. & Keers, Henk November 27, 2006.

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Methods for geophysical model assessment, in particuale thecomputation of model parameter resolution, indicate the value and thelimitations of time-lapse data in estimating reservoir flow properties. Atrajectory-based method for computing sensitivities provides an effectivemeans to compute model parameter resolutions. We examine the commonsituation in which water encroaches into a resrvoir from below, as due tothe upward movement of an oil-water contact. Using straight-forwardtechniques we find that, by inclusing reflections off the top and bottomof a reservoir tens of meters thick, we can infer reservoir permeabilitybased upon time-lapse data. We find that, for the caseof water influxfrom below, using multiple time-lapse 'snapshots' does not necessarilyimprove the resolution of reservoir permeability. An application totime-lapse data from the Norne field illustrates that we can resolve thepermeability near a producing well using reflections from threeinterfaces associated with the reservoir.

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  • Journal Name: Society of Exploration Geophysics; Journal Volume: 73; Journal Issue: 1; Related Information: Journal Publication Date: Jan./Feb.2008

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  • Report No.: LBNL--63532
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 929337
  • Archival Resource Key: ark:/67531/metadc899952

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  • November 27, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 29, 2016, 6:58 p.m.

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Vasco, D.W. & Keers, Henk. Seismic imaging of reservoir flow properties: Resolving waterinflux and reservoir permeability, article, November 27, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc899952/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.