Method for scale inhibition in a well penetrating a subterranean formation

Patent · Tue May 03 04:00:00 EDT 1988

OSTI ID:7053238

Underdown, D R

In a method for inhibiting the formation of scale in a well penetrating a subterranean formation for the production of fluids from the formation, the method including injecting at least one scale inhibitor into the formation through the well so that the scale inhibitor is thereafter slowly released from the formation to inhibit the formation of scale, the improvement is described comprising: injecting at least one polymeric material into the well in an amount effective to prolong the scale formation inhibition, the polymeric material having a composition different from the scale inhibitor a number average molecular weight in the range of about 6,000 to about 25,000 and being a copolymer derived from at least one first monomer having a maleic moiety and at least one second monomer selected from the group consisting of acrylic acid, methacrylic acid and mixtures thereof.

• Assignee: Atlantic Richfield Co., Los Angeles, CA
• Patent Number(s): US 4741400
• OSTI ID: 7053238
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACIDIFICATION
ACRYLIC ACID
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
CONTROL
CORROSION INHIBITORS
DEPOSITS
MONOCARBOXYLIC ACIDS
MONOMERS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
SCALE CONTROL
WELLS