Amino resins crosslinked polymer gels for permeability profile control

Patent · Tue May 30 04:00:00 EDT 1989

OSTI ID:5747820

Shu, P

This patent describes a process for closing pores in a hydrocarbonaceous fluid bearing formation to obtain improved sweep efficiency during a waterflood oil recovery operation which comprises injecting a gellable composition comprising: (a) water; (b) 0.2 to 5.0 wt. percent of a cross linkable polymer which is a member selected from the group consisting of xanthan biopolymers, heteropolysaccharide S-130, poly (acrylamide-co-acrylamido-2-methyl-propanesulfonate), and acrylamide modified polyvinyl alcohol; and (c) 0.02 to 50.0 wt. percent of a partially methylated aminoplast resin which cross links with the polymer thereby forming a gel in the absence of a salt which is acid generating upon the application of heat which gel is of a strength sufficient to close pores in one or more permeable zones of the formation.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4834180
• OSTI ID: 5747820
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
AMINO ACIDS
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
GELS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERMEABILITY
PETROCHEMICALS
PETROLEUM PRODUCTS
PLUGGING
PLUGGING AGENTS
POLYMERS
RESERVOIR ROCK
RESINS
WELLS