US 11,814,578 B2
Delayed gelling agents
Huili Guan, Lawrence, KS (US); Cory Berkland, Lawrence, KS (US); Ahmad Moradi-Araghi, Tulsa, OK (US); Jenn-Tai Liang, College Station, TX (US); David R. Zornes, Edmond, OK (US); Riley B Needham, Bartlesville, TX (US); James H. Hedges, Bartlesville, OK (US); Min Cheng, Bartlesville, OK (US); James P. Johnson, Bartlesville, OK (US); and Faye L. Scully, Bartlesville, OK (US)
Assigned to CONOCOPHILLIPS COMPANY, Houston, TX (US); and UNIVERSITY OF KANSAS, Lawrence, KS (US)
Filed by ConocoPhilips Company, Houston, TX (US); and University of Kansas, Lawrence, KS (US)
Filed on May 13, 2021, as Appl. No. 17/319,414.
Application 17/319,414 is a division of application No. 16/398,853, filed on Apr. 30, 2019, granted, now 11,390,795.
Application 16/398,853 is a division of application No. 15/803,886, filed on Nov. 6, 2017, granted, now 10,323,174, issued on Jun. 18, 2019.
Application 15/803,886 is a division of application No. 13/156,929, filed on Jun. 9, 2011, granted, now 9,850,425, issued on Dec. 26, 2017.
Claims priority of provisional application 61/372,747, filed on Aug. 11, 2010.
Prior Publication US 2021/0261854 A1, Aug. 26, 2021
Int. Cl. C09K 8/588 (2006.01); C09K 8/88 (2006.01); C09K 8/92 (2006.01); E21B 33/138 (2006.01)
CPC C09K 8/588 (2013.01) [C09K 8/88 (2013.01); C09K 8/887 (2013.01); C09K 8/92 (2013.01); E21B 33/138 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A composition comprising:
a) a degradable polymeric cage comprising a polymer having one or more monomer(s), wherein said polymer is crosslinked with a labile crosslinker to form said cage, wherein the amount of labile crosslinker to monomer(s) is less than 1% by weight;
b) a gelation agent within said cage that is released upon degradation of said cage; and
c) an expandable polymeric particle and a fluid comprising water;
wherein said gelation agent can crosslink said expandable polymeric polymer to form a gel when said cage is degraded and said gelation agent is released, and
wherein said expandable polymeric particle comprises partially hydrolyzed polyacrylamide.