Water flooding process

Patent · Tue Sep 26 04:00:00 EDT 1967

OSTI ID:6437274

Pye, D J

This waterflooding process inhibits ferric hydroxide plugging of water flood injection wells. In the process there is incorporated into the aqueous injection fluid, a small but effective amount of a water-soluble hydro-sulfite (such as potassium, sodium, or ammonium hydrosulfite) to obviate or at least reduce the plugging of the oil formation by ferric hydroxide. Incorporation of the hydrosulfite eliminates oxygen-promoted corrosion of equipment and, at the same time, prevents the oxidation of ferrous chemical species to insoluble ferric hydroxide. The hydrosulfite ion is compatable with water-soluble, polymeric mobility control agents that may be incorporated into the injection fluid. Beneficial results are realized by the use of from 5 to as much as 10,000 ppm by weight of the hydrosulfite additive, based on the weight of the injection fluid. (6 claims)

• Assignee: Dow Chemical Co.
• Patent Number(s): US 3343601
• OSTI ID: 6437274
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CONTROL
CORROSION INHIBITORS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
INJECTION WELLS
IRON COMPOUNDS
IRON HYDROXIDES
MOBILITY
OIL WELLS
OXYGEN COMPOUNDS
PETROLEUM
PLUGGING
RECOVERY
STIMULATION
TRANSITION ELEMENT COMPOUNDS
WATER TREATMENT
WATERFLOODING
WELL STIMULATION
WELLS