Improved efficiency of miscible CO{sub 2} floods and enhanced prospects for CO{sub 2} flooding heterogeneous reservoirs. Quarterly technical progress report, January 1, 1996--March 31, 1996

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The objective of this research project is to improve the effectiveness of CO{sub 2} flooding in heterogeneous reservoirs. Research is being conducted in three related tasks: (1) exploring further the applicability of selective mobility reduction (SMR) in the use of foam flooding, (2) exploring the possibility of higher economic viability of floods at reduced CO{sub 2} injection pressures, and (3) understanding low interfacial tension (IFT) mechanisms with application to CO{sub 2} flooding in tight vertically fractured reservoirs. Progress made this quarter in each of the three tasks is discussed. Some of the highlights are: two new surfactants (CD 1040 and ... continued below

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12 p.

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Grigg, R.B. & Schechter, D.S. June 1, 1996.

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Description

The objective of this research project is to improve the effectiveness of CO{sub 2} flooding in heterogeneous reservoirs. Research is being conducted in three related tasks: (1) exploring further the applicability of selective mobility reduction (SMR) in the use of foam flooding, (2) exploring the possibility of higher economic viability of floods at reduced CO{sub 2} injection pressures, and (3) understanding low interfacial tension (IFT) mechanisms with application to CO{sub 2} flooding in tight vertically fractured reservoirs. Progress made this quarter in each of the three tasks is discussed. Some of the highlights are: two new surfactants (CD 1040 and Dowfax 8390) were tested and found to reduce mobility; CO{sub 2}-reservoir phase behavior tests in a static cell have been completed on recombined Spraberry reservoir oil; coreflood foam tests were performed at various CO{sub 2} by simultaneously injecting CO{sub 2} and surfactant solution into a surfactant solution saturated core until a steady-state pressure drop across the core was obtained; results indicate that the CO{sub 2}-surfactant solution mobilities were always higher than the baseline tests; and for task 3, research continued in understanding the fundamentals of low interfacial tension behavior via theory and experiment and the influence on multiphase flow behavior, and modeling low IFT gravity drainage for application of gas injection in fractured reservoirs.

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12 p.

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OSTI as DE96011421

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  • Other Information: PBD: 1996

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  • Other: DE96011421
  • Report No.: DOE/BC/14977--9
  • Report No.: PRRC--96-10
  • Grant Number: FG22-94BC14977
  • DOI: 10.2172/241575 | External Link
  • Office of Scientific & Technical Information Report Number: 241575
  • Archival Resource Key: ark:/67531/metadc673088

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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 1, 2015, 1:02 p.m.

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Grigg, R.B. & Schechter, D.S. Improved efficiency of miscible CO{sub 2} floods and enhanced prospects for CO{sub 2} flooding heterogeneous reservoirs. Quarterly technical progress report, January 1, 1996--March 31, 1996, report, June 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc673088/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.