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:
Sep. 29, 2009
Filed:
Nov. 20, 2003
Lewis R. Norman, Duncan, OK (US);
Joseph R. Carlise, Atlanta, GA (US);
Javier Jesus Concepcion Corbea, Atlanta, GA (US);
William S. Rees, Jr., Snellville, GA (US);
Marcus Weck, Atlanta, GA (US);
Lewis R. Norman, Duncan, OK (US);
Joseph R. Carlise, Atlanta, GA (US);
Javier Jesus Concepcion Corbea, Atlanta, GA (US);
William S. Rees, Jr., Snellville, GA (US);
Marcus Weck, Atlanta, GA (US);
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
This invention relates to methods of crosslinking polysaccharides to form crosslinked polysaccharides, and more particularly, to crosslinked polysaccharides that may be incorporated in fluids useful in, for example, applications requiring a crosslinked viscoelastic gel. In one embodiment, the present invention provides a method of crosslinking a polysaccharide comprising the steps of: providing a metal coordinating group having a reactive site, derivatizing a polysaccharide with the metal coordinating group to produce a derivatized polysaccharide having bidentate ligands, and crosslinking the derivatized polysaccharide having bidentate ligands with a metal ion to form a metal ligand coordination complex.