Method and apparatus for measuring relative permeability and water saturation of a core
Method for determining fluid saturation in a porous media through the use of CT scanning
Measuring relative permeability to steam in cores of water and oil containing reservoir formations
Method for determining relative permeability of a subterranean reservoir
Apparatus for measuring resistivity of porous rock
Method for utilizing measured resistivities of porous rock under differing fluid saturations to identify fluid distribution equilibrium
Method for determining density of samples of materials employing X-ray energy attenuation measurements
Method for measuring wettability of porous rock
Method for conducting capillary pressure drainage and imbibition on a core sample of a porous rock
ApplicationNo. 064390 filed on 05/19/1993
US Classes:73/38Porosity or permeability
ExaminersPrimary: Williams, Hezron
Assistant: Roskos, Joseph W.
Attorney, Agent or Firm
International ClassG01N 015/08
AbstractA core sample of a porous rock from a subterranean reservoir is placed in a pressure cell holder. The sample is desaturated to first fluid irreducible desaturation with a second fluid through a porous plate preferentially wet to only the first fluid. The sample is then flooded with a plurality of first and second fluid ratios. Core pressure is measured along the core at various differential pressure plateau's during initial first fluid desaturation and again during fluid flooding with first and second fluids. A computed tomography (CT) scanning system provides images of the density distribution within the core sample during such flooding. Fluid saturation, determined from these CT images, and the pressure measurements are used to determine the relative permeability and capillary pressure responses of the fluids within the subterranean reservoir.