Dispersion measurement as a method of quantifying geologic characterization and defining reservoir heterogeneity. Final report

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The main objective of this research project is to investigate dispersion as a method of quantifying geological characterization and defining reservoir heterogeneity in order to enhance crude oil recovery. The dispersion of flow of a reservoir rock (dispersion coefficient and dispersivity) was identified as one of the physical properties of a reservoir rock by measuring the mixing of two miscible fluids, one displacing the other in a porous medium. A rock was 100% saturated with a resident fluid and displaced by a miscible fluid of equal viscosity and equal density. Some specific experiments were performed with unequal densities. Produced fluid ... continued below

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142 p.

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Menzie, D.E. May 1, 1995.

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Description

The main objective of this research project is to investigate dispersion as a method of quantifying geological characterization and defining reservoir heterogeneity in order to enhance crude oil recovery. The dispersion of flow of a reservoir rock (dispersion coefficient and dispersivity) was identified as one of the physical properties of a reservoir rock by measuring the mixing of two miscible fluids, one displacing the other in a porous medium. A rock was 100% saturated with a resident fluid and displaced by a miscible fluid of equal viscosity and equal density. Some specific experiments were performed with unequal densities. Produced fluid was analyzed by refractometer, nuclear reaction, electrical conductivity and X-ray scan. Several physical and flow characteristics were measured on the sand rock sample in order to establish correlations with the measured dispersion property. Absolute permeability, effective porosity, relative permeability, capillary pressure, the heterogeneity factor and electrical conductivity were used to better understand the flow system. Linear, transverse, 2-D and 3-D dispersions were measured and used to characterize the rock heterogeneity of the flow system. A new system of measuring dispersion was developed using a gas displacing gas system in a porous medium. An attempt was also made to determine the dispersion property of an actual reservoir from present day well log data on a producing well. 275 refs., 102 figs., 17 tabs.

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142 p.

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OSTI as DE95000141

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  • Other Information: PBD: May 1995

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  • Other: DE95000141
  • Report No.: DOE/BC/14652--15
  • Grant Number: AC22-90BC14652
  • DOI: 10.2172/71301 | External Link
  • Office of Scientific & Technical Information Report Number: 71301
  • Archival Resource Key: ark:/67531/metadc706831

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • Dec. 11, 2015, 3:20 p.m.

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Menzie, D.E. Dispersion measurement as a method of quantifying geologic characterization and defining reservoir heterogeneity. Final report, report, May 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc706831/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.