The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2014
Filed:
Aug. 26, 2011
Charles Landis, Houston, TX (US);
Thomas Anderson, Dillsburg, PA (US);
Eric Frantz, Houston, TX (US);
Don Dell, The Woodlands, TX (US);
Matthew Hilfiger, College Station, TX (US);
Charles Landis, Houston, TX (US);
Thomas Anderson, Dillsburg, PA (US);
Eric Frantz, Houston, TX (US);
Don Dell, The Woodlands, TX (US);
Matthew Hilfiger, College Station, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
Methods of reducing the permeability of a subterranean formation to aqueous-based fluids using a water-soluble relative permeability modifier that comprises a hydrophobically modified polymer, wherein the hydrophobically modified polymer is a reaction product of: a hydrophilic polymer that comprises a polymer selected from the group consisting of a polyvinylamine, a poly(vinylamine/vinyl alcohol), and an alkyl acrylate polymer; and, a hydrophobic compound comprising at least one alkyl chain having a carbon chain length between about 4 and about 22 carbons. The water-soluble relative permeability modifier may be placed within a subterranean drilling operation such that the water-soluble relative permeability modifier attaches onto surfaces within the subterranean formation to effect permeability of aqueous fluids.