Waterflooding process employing anionic-nonionic copolymer

Patent · Tue Oct 17 04:00:00 EDT 1978

OSTI ID:6569201

Chen, C S.H.; Schwab, F C; Sheppard, E W

This specification discloses a waterflooding process for producing oil from an oil-containing subterranean formation that is penetrated by an injection well and a production well. An aqueous solution of a water soluble copolymer having segments formed of blocks of an aromatic monomer and blocks of an olefinic monomer chemically modified to have an anionic function on the olefinic segments is injected into the formation to improve the recovery of oil therefrom.

• Assignee: Mobil Oil Corp.
• Patent Number(s): US 4120801
• OSTI ID: 6569201
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COPOLYMERS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
POLYMERS
WATERFLOODING
WELL STIMULATION
WELLS