Accelerated polymer gelation process for oil recovery applications

Patent · Tue Feb 09 04:00:00 EST 1988

OSTI ID:5288058

Sydansk, R D

A wellbore cementing process applied to a wellbore in fluid communication with a subterranean hydrocarbon-bearing formation below an earthen surface is described comprising: (a) mixing a simple mineral acid and a chromic carboxylate complex comprising a chromic species and a carboxylate species to form a crosslinking agent solution capable of crosslinking a water-soluble carboxylate-containing polymer, wherein the acid is present in the crosslinking agent solution in an amount sufficient to accelerate the crosslinking of the polymer relative to the crosslinking of the polymer with a crosslinking agent solution absent the acid; (b) mixing the polymer and the crosslinking agent solution containing the chromic carboxylate complex and simple mineral acid at the surface to form a gelation solution; (c) injecting the gelation solution into a volume in or adjacent the wellbore desired to be plugged via the wellbore; and (d) crosslinking the polymer to completion at an accelerated rate in the volume to form a cement gel which substantially plugs the volume.

• Assignee: Marathon Oil Co., Findlay, OH
• Patent Number(s): US 4723605
• OSTI ID: 5288058
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BUILDING MATERIALS
CARBON-CARBON LYASES
CARBOXY-LYASES
CARBOXYLASE
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
COMMINUTION
CROSS-LINKING
ENERGY SOURCES
ENHANCED RECOVERY
ENZYMES
FLUIDS
FOSSIL FUELS
FRACTURING
FRACTURING FLUIDS
FUELS
GELATION
HYDRAULIC FRACTURING
LYASES
MATERIALS
OIL WELLS
PETROLEUM
POLYMERIZATION
POLYMERS
RECOVERY
RESERVOIR ROCK
ROCK-FLUID INTERACTIONS
STIMULATION
TRANSITION ELEMENT COMPOUNDS
WELL STIMULATION
WELLS