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    Crosslinking of swellable polymer with PEI
    2.
    发明授权
    Crosslinking of swellable polymer with PEI 有权

    公开(公告)号：US12037544B2

    公开(公告)日：2024-07-16

    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

    CPC classification number: 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.

    Swellable polymer with cationic sites
    4.
    发明授权
    Swellable polymer with cationic sites 有权
    具有阳离子位点的可溶胀聚合物

    公开(公告)号：US09139762B2

    公开(公告)日：2015-09-22

    申请号：US14182901

    申请日：2014-02-18

    Applicant: ConocoPhillips Company ,  University of Kansas

    Inventor： Ahmad Moradi-Araghi ,  James H. Hedges ,  David R. Zornes ,  Riley B. Needham ,  Huili Guan ,  Jenn-Tai Liang ,  Cory Berkland ,  James P. Johnson ,  Min Cheng ,  Faye Lynn Scully

    IPC: C09K8/588 ,  E21B43/16 ,  C09K8/88

    CPC classification number: C09K8/887 ,  C09K8/588

    Abstract: The invention is directed to long lasting crosslinked water-soluble swellable polymers, methods for making same, and their uses. More particularly, the invention relates to a composition comprising expandable polymeric particles having cationic sites as well as labile crosslinkers and stable crosslinkers, said particle 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 target zones in the reservoirs and when the heat and/or a suitable pH in the reservoir cause degradation of the labile crosslinker and when the particle expands, the cationic sites in the polymer adsorb to negative sites of the rock in the formation, thus diverting water to lower permeability regions and improving oil recovery. However, many other uses are possible.

    Abstract translation: 本发明涉及长效交联水溶性可溶胀聚合物，其制备方法及其用途。 更具体地说，本发明涉及包含具有阳离子位点的可发性聚合物颗粒以及不稳定的交联剂和稳定的交联剂的组合物，所述颗粒与流体混合。 特别重要的用途是作为石油生产中的注入流体，其中将可发性聚合物颗粒注入到储存器中的目标区域中，并且当储存器中的热量和/或合适的pH引起不稳定交联剂的降解时， 膨胀，聚合物中的阳离子部位吸附在地层中的岩石的负位点，从而将水转移到较低的渗透率区域并提高油的回收率。 然而，许多其他用途是可能的。

    Crosslinking of swellable polymer with PEI
    6.
    发明授权
    Crosslinking of swellable polymer with PEI 有权

    公开(公告)号：US11466198B2

    公开(公告)日：2022-10-11

    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 ,  E21B33/138 ,  E21B43/16

    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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