Method for controlling the rheology of an aqueous fluid and gelling agent therefor
USRE41585E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC —)General
Abstract
A method for controlling the rheology of aqueous systems, particularly for those intended for underground use, includes injecting an aqueous fluid containing a surfactant gelling agent into the system. The surfactant gelling agents are, for example, fatty aliphatic amidoamine oxides, salts of an alkoxylated monoamine with an aromatic dicarboxylic acid, and salts of an alkyldiamine with an aromatic dicarboxylic acid. The surfactant gelling agents can be absorbed onto particulate supports to facilitate delivery of the gelling agent. The additives may be incorporated in the viscoelastic fluid to tailor its use in hydraulic fluids, drilling muds, fracture fluids, and in applications such as permeability modification, gravel packing, cementing, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.