Method for preventing the formation of insoluble iron compounds

Patent · Tue Sep 06 04:00:00 EDT 1966

OSTI ID:6470417

Capriati, E G; Oakes, D T

A haloalkyl phosphonic acid is added to an aqueous system to prevent the formation of water-insoluble iron compounds (such as iron hydroxide, Fe (OH)D3U) in pipelines that carry large volumes of water. The primary advantage is found in the fact that this method prevents precipitation of water-insoluble iron compounds in basic and lower acidity aqueous solutions. This method also finds particular utility in the prevention of plugging of subterranean petroleum-bearing formations during the secondary recovery of oil by waterflooding. An example is included to further describe this method. (8 claims)

• Assignee: Monsanto Co.
• Patent Number(s): US 3271306
• OSTI ID: 6470417
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
INHIBITION
INORGANIC ACIDS
IRON COMPOUNDS
IRON HYDROXIDES
OIL WELLS
OXYGEN COMPOUNDS
PETROLEUM
PHOSPHORIC ACID
PIPELINES
PLUGGING
PRECIPITATION
SEPARATION PROCESSES
STIMULATION
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
WATERFLOODING
WELL STIMULATION
WELLS