Process for removal of salt-contaminated well fluids from a well bore

Patent · Tue Mar 09 04:00:00 EST 1965

OSTI ID:6694583

Siegele, F H

This is a method for the rapid removal of water contaminated with hydrocarbons, brine, clays, calcium salt derived from calciferous formations, and other contaminating salts, such as magnesium salts found in dolomitic formations. Certain sulfonated anionic detergents are effective as foaming agents in aqueous, salt environments and as surfactants added to floodwaters used in secondary-recovery operations. Such reagents are sulfonated N-higher alkyl propionamides. Small amounts of sulfonated N-higher alkyl propionamide, usually within the range of about 0.1 to 5%, based on the water content in the well, are added. The foaming agent may be introduced into the well in the form of its alkali metal salt either dissolved in water, or admixed with an inert, polar, organic solvent, such as methylacohol, ethylacohol, isopropanol, dimetgyl formamide and the like. (8 claims)

• Assignee: TUL; EDB-81-025554
• Patent Number(s): US 3172474
• OSTI ID: 6694583
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALKALINE EARTH METAL COMPOUNDS
ARTIFICIAL LIFTS
BRINES
CALCIUM COMPOUNDS
CLAYS
ENERGY SOURCES
ENHANCED RECOVERY
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
MAINTENANCE
MINERALS
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
REMOVAL
STIMULATION
SURFACTANTS
WATER
WELL STIMULATION
WELLS