Hydraulic fracturing method using delayed crosslinker composition

Patent · Tue Jun 07 04:00:00 EDT 1988

OSTI ID:6964823

Hodge, R M

A method of fracturing a subterranean formation penetrated by a well, is described comprising: (a) producing a gel solution by adding to an aqueous solution of an organic crosslinkable carboxylated polymer: (i) a sufficient amount of a crosslinker composition to result in delayed crosslinking of the polymer, the cross-linker composition having an organic zirconium complex to crosslink the polymer, an organic alpha-hydroxymonocarboxylic acid to delay crosslinking of the polymer by the zirconium complex, and having a pH of no greater than about 4; (ii) sufficient acid 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 4749041
• OSTI ID: 6964823
• 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)
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COMMINUTION
COMPLEXES
CROSS-LINKING
ENERGY SOURCES
ENHANCED RECOVERY
FLUID MECHANICS
FLUIDS
FOSSIL FUELS
FRACTURING
FRACTURING FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDRAULIC FRACTURING
HYDRAULICS
MECHANICS
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
PH VALUE
POLYMERIZATION
POLYMERS
RECOVERY
STIMULATION
TRANSITION ELEMENT COMPLEXES
WELL STIMULATION
WELLS
ZIRCONIUM COMPLEXES