Hydraulic fracturing method using delayed crosslinker composition

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6776093

Hodge, R M

A method is described of fracturing a subterranean formation penetrated by a well, comprising: (a) producing a gel solution by adding to an aqueous solution of an organic carboxylated crosslinkable polymer: (i) a sufficient amount of a crosslinker composition to result in delayed crosslinking of the polymer. The crosslinker composition has an organic zirconium complex to crosslink the polymer, an organic alpha-hydroxymonocarboxylic acid to delay crosslinking of the polymer by the zirconium complex, and a pH of no greater than about 4; (ii) sufficient carbon dioxide to result in a pH of substantially 3 to 5 in the polymer solution; (b) pumping the fracturing fluid down the well under sufficient pressure to fracture the subterranean formation.

• Assignee: Dowell Schlumberger Inc., Tulsa, OK
• Patent Number(s): US 4657081
• OSTI ID: 6776093
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
AQUEOUS SOLUTIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
COMMINUTION
COMPLEXES
CROSS-LINKING
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUIDS
FOSSIL FUELS
FRACTURING
FRACTURING FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GELS
HYDRAULIC FRACTURING
MIXTURES
MONOCARBOXYLIC ACIDS
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PH VALUE
POLYMERIZATION
POLYMERS
PRESSURE EFFECTS
PUMPING
RECOVERY
SOLUTIONS
STIMULATION
TRANSITION ELEMENT COMPLEXES
WELL STIMULATION
WELLS
ZIRCONIUM COMPLEXES