Method of fracturing a subterranean formation using delayed crosslinker compositions containing organic titanium complexes

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6503478

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 crosslinkable polymer; (i) a sufficient amount of a crosslinker composition to result in delayed crosslinking of the polymer. The crosslinker composition has an organic titanium complex to crosslink the polymer, an organic alpha-monohydroxycarboxylic acid to delay crosslinking of the polymer by the titanium complex, and a pH of no greater than 4.8; (ii) sufficient carbon dioxide to result in a pH of substantially 3 to 5 in the polymer solution; and (b) pumping the fracturing fluid through the well against the formation at a sufficient pressure and flow rate to create and/or extend a fracture into the subterranean formation.

• Assignee: Dowell Schlumberger Inc., Tulsa, OK
• Patent Number(s): US 4657080
• OSTI ID: 6503478
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
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Plowshare-- (-1989)
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
COMMINUTION
COMPLEXES
CROSS-LINKING
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLOW RATE
FLUIDS
FOSSIL FUELS
FRACTURING
FRACTURING FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GELS
HYDRAULIC FRACTURING
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
STIMULATION
TITANIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
WELL STIMULATION
WELLS