Treatment of formations containing fresh-water swelling clays
Patent
·
OSTI ID:5311819
A method is described for treating subterranean formations containing fresh-water swelling clay materials and oil and water whereby swelling of these clays when contacted with fresh water is greatly reduced. Use of this invention enables the realization of a greatly increased injectivity of aqueous fluids into the formation. This technique is particularly applicable for use in conjunction with secondary recovery techniques, such as steam injection techniques and waterfloods. A solution of metal halide salt, wherein the metal has an atomic weight of more than 24, dissolved in a miscible solvent is injected into the formation via a well penetrating the formation. This solution may be injected into the formation either prior to, concurrent with, or subsequent to the injection of an aqueous fluid into the formation. (8 claims)
- Assignee:
- Mobil Oil Corp.
- Patent Number(s):
- US 3710863
- OSTI ID:
- 5311819
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
CLAYS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
INJECTION
INTAKE
OIL WELLS
PETROLEUM
RECOVERY
SOLUBILITY
SOLVENTS
STEAM INJECTION
STEAM SOAK PROCESSES
SWELLING
THERMAL RECOVERY
WATERFLOODING
WELLS
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
CLAYS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
INJECTION
INTAKE
OIL WELLS
PETROLEUM
RECOVERY
SOLUBILITY
SOLVENTS
STEAM INJECTION
STEAM SOAK PROCESSES
SWELLING
THERMAL RECOVERY
WATERFLOODING
WELLS