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    CROSSLINKING OF SWELLABLE POLYMER WITH PEI
    16.
    发明申请
    CROSSLINKING OF SWELLABLE POLYMER WITH PEI 有权

    公开(公告)号：US20220348817A1

    公开(公告)日：2022-11-03

    申请号：US17864126

    申请日：2022-07-13

    Applicant: CONOCOPHILLIPS COMPANY ,  University of Kansas

    Inventor： Ahmad MORADI-ARAGHI ,  Min CHENG ,  Riley B. Needham ,  James H HEDGES ,  Ramesh S SARATHI ,  Faye L SCULLY ,  Terry M CHRISTIAN ,  Huili GUAN ,  Cory BERKLAND ,  Jenn-Tai LIANG

    IPC: C09K8/588 ,  E21B33/138 ,  E21B43/16

    Abstract: The invention is directed to stable and labile crosslinked water swellable polymeric microparticles that can be further gelled by covalent crosslinking in a transamidation reaction, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker comprising PEI or other polyamine based tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker and swelling of the particle, so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric microparticles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the microparticle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery.

    CROSSLINKING OF SWELLABLE POLYMER WITH PEI
    19.
    发明申请
    CROSSLINKING OF SWELLABLE POLYMER WITH PEI 审中-公开

    公开(公告)号：US20200095496A1

    公开(公告)日：2020-03-26

    申请号：US16694004

    申请日：2019-11-25

    Applicant: CONOCOPHILLIPS COMPANY ,  University of Kansas

    Inventor： Ahmad MORADI-ARAGHI ,  Min CHENG ,  Riley B. NEEDHAM ,  James H. HEDGES ,  Ramesh S. SARATHI ,  Faye L. SCULLY ,  Terry M. CHRISTIAN ,  Huili GUAN ,  Cory BERKLAND ,  Jenn-Tai LIANG

    IPC: C09K8/588 ,  E21B43/16 ,  E21B33/138

    Abstract: The invention is directed to stable and labile crosslinked water swellable polymeric microparticles that can be further gelled, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker comprising PEI or other polyamine based tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker and swelling of the particle, so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric microparticles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the microparticle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery.

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