The effect of acrylic comonomers on the hydrolytic stability of polyacrylamides at high temperature in alkaline solution

Conference · Sun May 01 04:00:00 EDT 1988 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6719970

Dexter, R W; Ryles, R G

A major cause of instability in acrylamide-based polymers used in tertiary oil recovery is hydrolysis of the amide groups, especially at alkaline pH and high temperatures. Changes in polymer composition resulting from hydrolysis can cause precipitation from sea-water solutions. This work has studied the effects of the sodium salts of acrylic acid and acrylamidomethyl propane sulfonic acid (AMPS) on the rate of hydrolysis of acrylamide copolymers in alkaline solutions at high temperatures. Copolymers were prepared containing 0 - 50% of the anionic comonomers and hydrolyzed in aqueous solution at pH 8.5 at 90/sup 0/, 107/sup 0/, and 120/sup 0/C. The extent of hydrolysis was measured by a conductimetric method, analyzing for the total carboxylate content. It was found that the rate of hydrolysis decreased as the mole ratio of either of the anionic comonomers increased and that AMPS was more effective in preventing hydrolysis at all of the temperatures studied.

• Research Organization: American Cyanamid Co., 1937 W. Main Street, Stamford, CT (US)
• OSTI ID: 6719970
• Report Number(s): CONF-880659-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 33:1
• 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
ACRYLAMIDE
AMIDES
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COLLOIDS
DISPERSIONS
DISPLACEMENT FLUIDS
ENHANCED RECOVERY
FLUIDS
GELS
HIGH TEMPERATURE
HYDROPHYLIC POLYMERS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PH VALUE
POLYMERS
RECOVERY
SOLUTIONS
WELLS