Simultaneous determination of residual saturation and capillary pressure curves utilizing the ultracentrifuge
Residual saturation and capillary pressure curves are important for modelling reservoir and laboratory processes. Knowledge of the residual saturation curve is necessary to determine the ultimate production from a tertiary recovery process. Capillary pressure is required to interpret laboratory core floods and to describe multi-phase reservoir fluid flow. The ultracentrifuge provides a rapid means of determining capillary pressure and residual saturation relationships. It is non-destructive, uses small samples, and is capable of attaining both high capillary pressures and extremely low residual saturations. The effects of variation in residual saturation with Bond number are not included in the traditional Hassier-Brunner analysis for capillary pressure. Such desaturation effects can explain the anomalous experimental saturation distributions reported at high rotation rates. The current work generalizes the Hassler-Brunner analysis to include desaturation and also to include the variation in centripeta acceleration through the core. The analysis also provides for the determination of residual saturation as a function of Bond number (k..delta..rhog/sigma.
- Research Organization:
- Standard Oil Production Co.
- OSTI ID:
- 7199797
- Report Number(s):
- CONF-861080-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ANALOG SYSTEMS
BENCH-SCALE EXPERIMENTS
CENTRIFUGES
CONCENTRATORS
DATA ANALYSIS
DISTRIBUTION
DRILL CORES
ENERGY SOURCES
ENHANCED RECOVERY
EQUIPMENT
FLUID FLOW
FLUID INJECTION
FLUID MECHANICS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HYDRAULICS
LABORATORY EQUIPMENT
MEASURING METHODS
MECHANICS
MULTIPHASE FLOW
OIL SATURATION
OIL WELLS
PETROLEUM
PRESSURE GRADIENTS
PRESSURE MEASUREMENT
RECOVERY
RESERVOIR PRESSURE
RESERVOIR ROCK
RESIDUAL PETROLEUM
SAMPLING
SATURATION
SIMULATION
SIMULATORS
STIMULATION
SWEEP EFFICIENCY
ULTRACENTRIFUGES
VARIATIONS
WELL STIMULATION
WELLS