Well completion process using a polymer gel

Patent · Tue Feb 02 04:00:00 EST 1988

OSTI ID:5288034

Sydansk, R D; Ibele, L C

This patent describes a wellbore completion process for sealing an uncased face of a wellbore in fluid communication with a subterranean hydrocarbon-bearing formation below an earthen surface, 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 the wellbore; (c) placing the gelation solution at the wellbore; and (d) crosslinking the gelation solution to substantial completion at the wellbore face to form a non-flowing cross-linked polymer gel which substantially seals the wellbore from fluid intrusion across the face while allowing fluid to flow through the wellbore.

• Assignee: Marathon Oil Co., Findlay, OH
• Patent Number(s): US 4722397
• OSTI ID: 5288034
• 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
CARBOXYLATION
CARBOXYLIC ACID SALTS
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COLLOIDS
CROSS-LINKING
DISPERSIONS
GELATION
GELS
MATERIALS
NATURAL GAS WELLS
OIL WELLS
POLYMERIZATION
POLYMERS
SEALS
WELL COMPLETION
WELLS