Chemical blowing agents for improved sweep efficiency
Patent
·
OSTI ID:6114214
A method is described for producing hydrocarbonaceous fluids from a subterranean formation comprising: (a) injecting an aqueous slug into the formation which fluid contains (i) water, (ii) a surfactant, and (iii) a decomposable chemical blowing agent; (b) causing the chemical blowing agent to decompose in-situ thereby generating gas in an amount and rate sufficient to form a foam with the surfactant; and (c) either foaming aqueous slug and injecting thereafter a drive fluid thereby displacing hydrocarbonaceous fluids from the formation, or injecting a drive fluid without foaming.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4813484
- OSTI ID:
- 6114214
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
MIXTURES
OIL WELLS
PETROLEUM
RECOVERY
SOLUTIONS
STIMULATION
SURFACTANTS
SWEEP EFFICIENCY
WATERFLOODING
WELL STIMULATION
WELLS
020300* -- Petroleum-- Drilling & Production
ADDITIVES
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
MIXTURES
OIL WELLS
PETROLEUM
RECOVERY
SOLUTIONS
STIMULATION
SURFACTANTS
SWEEP EFFICIENCY
WATERFLOODING
WELL STIMULATION
WELLS