Bactericidal mixture of sulfite salt and surfactant quaternary ammonium salt

Patent · Tue Oct 16 00:00:00 EDT 1973

OSTI ID:5005664

Blankenhorn, C F; Felmann, T S

Fluid drive oil recovery processes which use an aqueous liquid are commonly faced with a problem in the control of both aerobic bacteria and anaerobic bacteria in the waters or aqueous liquids utilized for injection. The presence of anaerobic bacteria, such as the sulfate-reducing bacteria, is of primary concern, because of the metal corrosion, formation plugging, and possible hydrogen sulfide toxic effects which are the result of the end products of this organism's metabolism. The conditions existing in a waterflood oil recovery operation provide a stimulating environment for the growth of bacteria. However, the growth of bacteria in an aqueous liquid is inhibited by dissolving in the aqueous liquid an effective amount of a mixture of a soluble sulfite salt and a surface-active quaternary ammonium salt. (2 claims)

• Assignee: Shell Oil Co.
• Patent Number(s): US 3766063
• OSTI ID: 5005664
• Resource Relation: Patent File Date: Filed date 19 Jul 1971
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
59 BASIC BIOLOGICAL SCIENCES
AEROBACTER
CONTROL
OIL WELLS
WATERFLOODING
ADDITIVES
CORROSION
GERMICIDES
HYDROGEN SULFIDES
PETROLEUM
PLUGGING
QUATERNARY COMPOUNDS
SURFACTANTS
TOXICITY
WELL STIMULATION
AMINES
AMMONIUM COMPOUNDS
BACTERIA
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
MICROORGANISMS
ORGANIC COMPOUNDS
STIMULATION
SULFIDES
SULFUR COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production
550700 - Microbiology