Loading patent…
AssigneeHalliburton Energy Services, Inc.
InventorsB. Raghava Reddy, Krishna M. Ravi, James E. Griffith, Frank Zamora, Karen Luke, John L. Dennis JR., Ricky A. Cox
Estimating the term…
The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid solutions. In one embodiment, the invention provides a method of preventing the formation of fractures in a subterranean formation during a drilling operation. In other embodiments, the present invention provides methods of separating a first fluid and a second fluid in a subterranean formation; methods of forming lightweight well treatment fluids; methods of enhancing the permeability of a subterranean zone; lightweight drilling fluids; lightweight spacer fluids; foamed aqueous acidic well treatment fluids; and methods of making foamed aqueous and aqueous acidic well treatment fluids.
A method of preventing the formation of fractures in a subterranean formation during a drilling operation comprising the steps of:
A method of separating a first fluid and a second fluid in a subterranean formation comprising the steps of:
A method of forming a lightweight well treatment fluid for use in a subterranean formation comprising the steps of:
A method of enhancing the permeability of a subterranean zone comprising the steps of:
A method of enhancing the recovery of spent acid from a subterranean zone comprising the step of contacting the spent acid with a foamed aqueous acidic well treatment fluid in the subterranean zone.
A lightweight drilling fluid that comprises an aqueous fluid and a gas generated by a reaction of a gas generating chemical in the aqueous fluid, the gas generating chemical being present in an amount of from about 0.1% to about 10% by weight of the aqueous fluid.
A lightweight spacer fluid that comprises an aqueous fluid and a gas generated by a reaction of a gas generating chemical in the aqueous fluid, the gas generating chemical being present in an amount of from about 0.1% to about 10% by weight of the aqueous fluid.
A foamed aqueous acidic well treatment fluid that comprises an acid component and generated gas, the generated gas being a product of a reaction of a gas generating chemical in an aqueous fluid.
A method of making a foamed aqueous acidic well treatment fluid comprising the steps of:
A method of making a foamed well fluid that comprises a gas comprising the steps of:
Dependencies are inferred from the claim text.