Experimental investigation of the effects of temperature, pressure, and crude oil composition on interfacial properties
The wettability of the fluid/rock system affects the distribution of fluids within a porous medium and this distribution in turn has a strong effect on displacement behaviour and oil recovery efficiency. The present work is an investigation on the influence of temperature, pressure, and oil composition on the wettability of a specific carbonate reservoir. Contact angle measurements were used to quantify wettabilities on calcium carbonate crystals. The experimental conditions included varying temperature and pressure using both dead crude oil and oil recombined to the original bubble point. In addition to quantification of wetting properties, interfacial tension between oil and water was measured, and formation of rigid films was observed. A complete reversal from a predominantly oil-wet system at lower temperatures to a predominantly water-wet system at higher temperatures was found. Pressure alone had little effect on the wettability of the system. Interfacial tension between crude oil and brine showed an increase with temperature under anaerobic conditions, whereas at aerobic conditions, interfacial tension decreased with temperature. The tendency to form rigid films at the crude oil/brine interface was found to be temperature dependent. The formation of rigid films was stronger at lower temperatures.
- Research Organization:
- Petroleum Technology Research Inst.
- OSTI ID:
- 5362024
- Report Number(s):
- CONF-8310121-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE 12124; Conference: SPE annual technical conference, San Francisco, CA, USA, 5 Oct 1983
- Country of Publication:
- United States
- Language:
- English
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Experimental investigation of the effects of temperature, pressure, and crude oil composition of interfacial properties
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Related Subjects
OIL FIELDS
GEOPHYSICAL SURVEYS
RESERVOIR FLUIDS
CHEMICAL COMPOSITION
SURFACE TENSION
RESERVOIR ROCK
WETTABILITY
BRINES
CARBONATE ROCKS
EFFICIENCY
ENHANCED RECOVERY
FLUID FLOW
HYDRAULIC CONDUCTIVITY
HYDRODYNAMICS
OIL SATURATION
OPTIMIZATION
PETROLEUM
PETROLOGY
POROSITY
RESERVOIR PRESSURE
RESERVOIR TEMPERATURE
ROCK-FLUID INTERACTIONS
WATER SATURATION
WELL LOGGING
ENERGY SOURCES
FLUID MECHANICS
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GEOLOGY
MECHANICS
MINERAL RESOURCES
PETROLEUM DEPOSITS
RECOVERY
RESOURCES
ROCKS
SATURATION
SEDIMENTARY ROCKS
SURFACE PROPERTIES
SURVEYS
020300* - Petroleum- Drilling & Production