Nano-encapsulated triggered-release viscosity breaker
AssigneesWilliam Marsh Rice University, Halliburton Energy Services, Inc.
InventorsRohit K. Rana, Vinit S. Murthy, Michael S. Wong, Lewis R. Norman
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AssigneesWilliam Marsh Rice University, Halliburton Energy Services, Inc.
InventorsRohit K. Rana, Vinit S. Murthy, Michael S. Wong, Lewis R. Norman
Estimating the term…
A method for the encapsulation and triggered-release of water-soluble or water-dispersible materials. The method comprises a) providing an amount of electrolyte having a charge, b) providing an amount of counterion having a valence of at least 2, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form aggregates, d) adding a compound to be encapsulated, and e) adding nanoparticles to the solution such that nanoparticles arrange themselves around the aggregates. Release of the encapsulated species is triggered by disassembly or deformation of the microcapsules though disruption of the charge interactions. This method is specifically useful for the controlled viscosity reduction of the fracturing fluids commonly utilized in the oil field.
A method of servicing a wellbore in a subterranean formation comprising:
A method of servicing a wellbore in a subterranean formation comprising:
Dependencies are inferred from the claim text.