Wellbore cementing process using a polymer gel

Patent · Tue Feb 16 04:00:00 EST 1988

OSTI ID:5239942

Sydansk, R D

A primary cementing process for completion of a casing in a wellbore in fluid communication with a subterranean hydrocarbon-bearing formation below an earthen surface is described comprising: (a) admixing a gelation solution at the surface consisting essentially of a water-soluble carboxylate-containing polymer, a complex capable of crosslinking the polymer and formed of at least one chromic species and at least one acetate species, and a solvent for the polymer and the complex, (b) injecting the gelation solution into a volume behind the casing in the wellbore; and (c) crosslinking the gelation solution to substantial completion in the volume to form a non-flowing crosslinked polymer cement gel which substantially cements the casing to the face of the wellbore.

• Assignee: Marathon Oil Co., Findlay, OH
• Patent Number(s): US 4724906
• OSTI ID: 5239942
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACETATES
BUILDING MATERIALS
CARBON-CARBON LYASES
CARBOXY-LYASES
CARBOXYLASE
CARBOXYLIC ACID SALTS
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
COLLOIDS
CROSS-LINKING
DISPERSIONS
ENZYMES
GELATION
GELS
LYASES
MATERIALS
MIXING
NATURAL GAS WELLS
OIL WELLS
POLYMERIZATION
POLYMERS
SOLVENTS
TRANSITION ELEMENT COMPOUNDS
WELL CASINGS
WELL COMPLETION
WELLS