Hydraulic fracturing

Patent · Tue Apr 17 04:00:00 EST 1973

OSTI ID:7069053

Clampitt, R L

A method of fracturing a subterranean porous formation penetrated by a well bore consists of injecting down the well and into the formation, at a pressure sufficient to fracture the formation, a fracturing fluid comprising an aqueous gel. This gel is composed of water to which there has been added: a water-thickening amount of a water-dispersible polymer selected from the group consisting of polyacrylamides and polymethacrylamides; crosslinked polyacrylamides and crosslinked polyacrylamides; polyacrylic acid and polymethacrylic acid; polyacrylates; polymers of N-substituted acrylamides; copolymers of acrylamide with another ethylenically unsaturated monomer copolymerizable therewith; mixtures of the polymers; a water-soluble compound of a polyvalent metal which is capable of gelling the water when the valence of the metal is reduced to a lower valence state; and a water-soluble reducing agent. (31 claims)

• Assignee: Phillips Petroleum Co.
• Patent Number(s): US 3 727689
• OSTI ID: 7069053
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACRYLAMIDE
ADDITIVES
AMIDES
CHEMICAL COMPOSITION
COLLOIDS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FRACTURING
FUELS
GELS
HYDRAULIC FRACTURING
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM
POLYMERS
VISCOSITY
WELLS