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US 8,573,302 B2Granted
Surfactants and friction reducing polymers for the reduction of water blocks and gas condensates and associated methods
AssigneeHalliburton Energy Services, Inc.
InventorsIan D. Robb, Jason E. Bryant, Richard D. Rickman
Life of this patent
Estimating the term…
Abstract
Improved treatment fluids and methods for use in subterranean operations including the treatment of low permeability shale formations. In one embodiment the methods comprise: providing a treatment fluid comprising an aqueous base fluid and a controlled wetting system that comprises: a water soluble polymer having a charge, a surfactant having an opposite charge, and a compatibilizer; and introducing the treatment fluid into a subterranean formation.
Claims19
A method comprising:
- providing a treatment fluid comprising an aqueous base fluid and a controlled wetting system that comprises:
- a water soluble polymer having a charge, the water soluble polymer being selected from the group consisting of a copolymer of acrylamide and an ionic comonomer, a charged polysaccharide, and any combination thereof,
- wherein the charged polysaccharide is selected from the group consisting of a diutan gum, a xanthan gum, a galactomannan, a hydroxyethylguar, a hydroxypropylguar, a carboxymethylhydroxyethylguar, a hydroxyethyl cellulose, a carboxyethylcellulose, a carboxymethylcellulose, and any combination thereof;
- a surfactant having an opposite charge, and
- a compatibilizer;
- and
- introducing the treatment fluid into a subterranean formation.
4 more elements
A method comprising:
- providing a fracturing fluid comprising an aqueous base fluid and a controlled wetting system that comprises:
- a friction reducing polymer having a charge, the friction reducing polymer being selected from the group consisting of a copolymer of acrylamide and an ionic comonomer, a charged polysaccharide, and any combination thereof,
- wherein the charged polysaccharide is selected from the group consisting of a diutan gum, a xanthan gum, a galactomannan, a hydroxyethylguar, a hydroxypropylguar, a carboxymethylhydroxyethylguar, a hydroxyethyl cellulose, a carboxyethylcellulose, a carboxymethylcellulose, and any combination thereof;
- a surfactant having an opposite charge, and
- a compatibilizer;
- and
- introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation.
4 more elements
A method comprising:
- providing a fracturing fluid that comprises an aqueous base fluid and a controlled wetting system that comprises:
- a friction reducing polymer comprising a copolymer of acrylamide and an ionic comonomer,
- a surfactant having a positive charge, and
- a compatibilizer comprising a zwitterionic surfactant;
- and
- introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures therein.
3 more elements
Dependencies are inferred from the claim text.