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Fundamentals of Reservoir Surface Energy as Related to Surface Properties, Wettability, Capillary Action, and Oil Recovery from Fractured Reservoirs by Spontaneous Imbibition. Quarterly Report, July 1, 2004-September 30, 2004.


DE2004834193

Publication Date 2004
Personal Author Morrow, N. R.; Fischer, H.; Li, Y.; Mason, G.; Seth, S.
Page Count 44
Abstract The objective of this project is to increase oil recovery from fractured reservoirs through improved fundamental understanding of the process of spontaneous imbibition by which oil is displaced from the rock matrix into the fractures. Spontaneous imbibition is fundamentally dependent on the reservoir surface free energy but this has never been investigated for rocks. In this project, the surface free energy of rocks will be determined by using liquids that can be solidified within the rock pore space at selected saturations. Thin sections of the rock then provide a two-dimensional view of the rock minerals and the occupant phases. Saturations and oil/rock, water/rock, and oil/water surface areas will be determined by advanced petrographic analysis and the surface free energy which drives spontaneous imbibition will be determined as a function of increase in wetting phase saturation. The inherent loss in surface free energy resulting from capillary instabilities at the microscopic (pore level) scale will be distinguished from the decrease in surface free energy that drives spontaneous imbibition.
Keywords
  • Fractured reservoirs
  • Enhanced recovery
  • Oil recovery
  • Saturation
  • Computeried simulation
  • Petroleum
  • Surface energy
  • Surfactants
  • Wettability
  • Reservoir rock
  • Capillary flow
  • Imbibition
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors Wyoming Univ., Laramie. Dept. of Chemical Engineering.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 200516
Fundamentals of Reservoir Surface Energy as Related to Surface Properties, Wettability, Capillary Action, and Oil Recovery from Fractured Reservoirs by Spontaneous Imbibition. Quarterly Report, July 1, 2004-September 30, 2004.
Fundamentals of Reservoir Surface Energy as Related to Surface Properties, Wettability, Capillary Action, and Oil Recovery from Fractured Reservoirs by Spontaneous Imbibition. Quarterly Report, July 1, 2004-September 30, 2004.
DE2004834193

  • Fractured reservoirs
  • Enhanced recovery
  • Oil recovery
  • Saturation
  • Computeried simulation
  • Petroleum
  • Surface energy
  • Surfactants
  • Wettability
  • Reservoir rock
  • Capillary flow
  • Imbibition
  • Technical Information Center Oak Ridge Tennessee
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