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:
Mar. 05, 2013
Filed:
May. 14, 2010
Ahmad Moradi-araghi, Bixby, OK (US);
James H. Hedges, Bartlesville, OK (US);
David R. Zornes, Bartlesville, OK (US);
Riley B. Needham, Bartesville, OK (US);
Huili Guan, Lawrence, KS (US);
Jenn-tai Liang, Lawrence, KS (US);
Cory Berkland, Lawrence, KS (US);
James P. Johnson, Bartesville, OK (US);
Min Cheng, Bartlesville, OK (US);
Faye L. Scully, Bartlesville, OK (US);
Ahmad Moradi-Araghi, Bixby, OK (US);
James H. Hedges, Bartlesville, OK (US);
David R. Zornes, Bartlesville, OK (US);
Riley B. Needham, Bartesville, OK (US);
Huili Guan, Lawrence, KS (US);
Jenn-Tai Liang, Lawrence, KS (US);
Cory Berkland, Lawrence, KS (US);
James P. Johnson, Bartesville, OK (US);
Min Cheng, Bartlesville, OK (US);
Faye L. Scully, Bartlesville, OK (US);
ConocoPhillips Company, Houston, TX (US);
University of Kansas, Lawrence, KS (US);
Abstract
The invention is directed to crosslinked water-soluble swellable polymers, methods for making same and their various uses. More particularly, the invention relates to a composition comprising expandable polymeric particles being made with 0.1-5% hydrophobic monomers and labile crosslinkers and stable crosslinkers, said particles mixed with a fluid. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into a well and when the heat and/or pH of the target zones in the formation cause degradation of the labile crosslinker and when the particle expands, the hydrophobic groups associate to form a hydrophobically associative polymer, thus diverting water to lower permeability regions and improving oil recovery.