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US 8,618,026 B2Granted
Polymeric additives for enhancement of treatment fluids comprising viscoelastic surfactants and methods of use
AssigneeHalliburton Energy Services, Inc.
InventorsRyan G. Ezell, Ryan van Zanten
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Abstract
A subterranean treatment additive comprising a viscoelastic surfactant and an amphiphilic polymer. Wherein the amphiphilic polymer comprises a hydrophobic component, and a hydrophilic component, the hydrophilic component itself comprising at least 15 monomer units. The subterranean treatment additive may be used as part of a treatment fluid with an aqueous base fluid that may be a brine.
Claims11
A subterranean treatment additive comprising:
- a viscoelastic surfactant;
- and
- an amphiphilic polymer that comprises:
- a hydrophobic component selected from the group consisting of polybutadiene, polyisoprene, polystyrene, polyoxystyrene, and combinations thereof, and
- a hydrophilic component itself comprising at least 15 monomer units wherein the hydrophilic component is selected from the group consisting of an ethoxylate, polyethylene oxide (PEO), polyacrylic acid (PAA), polyethylacetate, dimethylacrylamide (DMA), n-isopropylacrylamide (NIPAM), polyvinylpyrrolidone (PVP), polyethyleneimine (PEI), and combinations thereof.
2 more elements
Dependencies are inferred from the claim text.