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US 7,069,994 B2Granted
Method for hydraulic fracturing with squeeze pressure
OwnerClaude E. Cooke, Jr.inventor
Life of this patent
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Abstract
Method for hydraulic fracturing of wells by transporting a cross-linked polymer containing a proppant down a wellbore in a carrier fluid, allowing the cross-linked polymer to coalesce into a polymer phase and squeezing the cross-linked polymer as a fracturing fluid is provided. Composition of the cross-linked polymer solution and the selection of additives may be varied to adjust the viscosity, degradation time and other properties of the fracturing fluid.
Claims23
A method for hydraulic fracturing of a formation around a wellbore, the wellbore having a volume, comprising:
- (a) placing a volume of cross-linked fracturing fluid in the wellbore, the volume of the cross-linked fracturing fluid being less than the volume of the wellbore;
- (b) displacing the cross-linked fracturing fluid down to a perforation in the casing by a displacement fluid;
- and
- (c) applying pressure to the displacement fluid by pumping so as to inject the cross-linked fracturing fluid through the perforation into the formation to form a hydraulic fracture.
1 more element
Dependencies are inferred from the claim text.