Plugging wellbores

Patent · Tue Oct 09 04:00:00 EDT 1984

OSTI ID:6201637

Drake, E N; Calcavecchino, P

A process for plugging a porous area of well bore which comprises pumping a shear thickening composition into the well under conditions of low shear to the portion of the well bore desired to be plugged at which point subjected to high shear to form a paste which plugs or seals the porous area. The shear thickening composition comprises a water-in-oil emulsion having granular bentonite dispersed in the oily phase, said oily phase having both an oil soluble amine and a polyamine derivative surfactant dissolved therein. The aqueous phase will preferably comprises a polyacrylamide solution. This process may be used for plugging wells having depths in excess of 8,000 feet.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4475594
• OSTI ID: 6201637
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACRYLAMIDE
AMIDES
AMINES
BENTONITE
CHEMICAL COMPOSITION
CLAYS
COLLOIDS
DISPERSIONS
EMULSIONS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PLUGGING
PLUGGING AGENTS
POLYAMIDES
POLYMERS
SURFACTANTS
WELLS