Relative permeability and the microscopic distribution of wetting and nonwetting phases in the pore space of Berea sandstone

Technical Report · Fri Apr 01 04:00:00 EST 1994

DOI:https://doi.org/10.2172/10146781· OSTI ID:10146781

Schlueter, E M; Cook, N G.W. ^[1]; Witherspoon, P A; Myer, L R ^[1]

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1. Lawrence Berkeley Lab., CA (United States)

Experiments to study relative permeabilities of a partially saturated rock have been carried out in Berea sandstone using fluids that can be solidified in place. The effective permeability of the spaces not occupied by the wetting fluid (paraffin wax) or the nonwetting fluid (Wood`s metal), have been measured at various saturations after solidifying each of the phases. The tests were conducted on Berea sandstone samples that had an absolute permeability of about 600 md. The shape of the laboratory-derived relative permeability vs. saturation curves measured with the other phase solidified conforms well with typical curves obtained using conventional experimental methods. The corresponding wetting and nonwetting fluid distributions at different saturations are presented and analyzed in light of the role of the pore structure in the invasion process, and their impact on relative permeability and capillary pressure. Irreducible wetting and nonwetting phase fluid distributions are studied. The effect of clay minerals on permeability is also assessed.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098; AC22-89BC14475
• OSTI ID: 10146781
• Report Number(s): LBL--34109; ON: DE94011006; BR: AC0520050/AC0530000
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200
58 GEOSCIENCES
580000
GEOSCIENCES
MICROSTRUCTURE
PARAFFIN
PERMEABILITY
PETROLEUM
POROSITY
RESERVES, GEOLOGY, AND EXPLORATION
SANDSTONES
SATURATION
SORPTION
SOURCE ROCKS