Mechanisms of oil displacement by microorganisms
Mechanisms of oil displacement at the oil-brine-sand interfaces by bacteria were investigated by microscopic observations and capillary pressure changes using unconsolidated, thin, reservoir flow cells. Three genera of bacteria, Bacillus, Pseudomonas, and Clostridium, were injected into water-wet and oil-wet cells of unconsolidated sand, saturated with brine and crude oil. The flow cells were placed under a microscope for visual and photographic observations. The flow cells were connected to a manometer to examine the complete capillary pressure hysteresis loop before and after introduction of bacteria. The thin reservoir flow cells were first saturated with brine, and then displaced to irreducible water saturation with crude oil. Oil and brine displacements were then made to determine the complete capillary pressure relationship. Next, the bacteria and nutrients were introduced and incubated in the flow cell for 24-48 hours. Microscopic observations were recorded photographically. After incubation, oil and brine displacements were again made to determine the capillary pressure hysteresis loop.
- Research Organization:
- Univ. of Oklahoma
- OSTI ID:
- 7199620
- Report Number(s):
- CONF-861080-
- Resource Relation:
- Conference: Society of Petroleum Engineers annual technical conference and exhibition, New Orleans, LA, USA, 5 Oct 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BACILLUS
GROWTH
CLOSTRIDIUM
OIL WELLS
WELL STIMULATION
PSEUDOMONAS
RESIDUAL PETROLEUM
EMULSIFICATION
MICROBIAL EOR
BENCH-SCALE EXPERIMENTS
BRINES
DISPLACEMENT FLUIDS
ENHANCED RECOVERY
FEASIBILITY STUDIES
INCUBATION
METHANE
MICROSCOPY
OIL SATURATION
PHOTOGRAPHY
PRESSURE GRADIENTS
PRODUCTION
SANDSTONES
WATER SATURATION
WETTABILITY
ALKANES
BACTERIA
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
MICROORGANISMS
ORGANIC COMPOUNDS
PETROLEUM
RECOVERY
ROCKS
SATURATION
SEDIMENTARY ROCKS
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production