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    NANOSHEET POLYMER COMPOSITE FOR WATER SHUTOFF
    11.
    发明申请
    NANOSHEET POLYMER COMPOSITE FOR WATER SHUTOFF 有权

    公开(公告)号：US20210324113A1

    公开(公告)日：2021-10-21

    申请号：US16854299

    申请日：2020-04-21

    申请人： Saudi Arabian Oil Company ,  Alfaisal University

    发明人： Ayman Almohsin ,  Edreese Alsharaeh ,  Feven Mattews Michael

    IPC分类号： C08F2/22 ,  C08J3/075 ,  C08K3/04 ,  C08K3/22 ,  C08K3/38 ,  C08K3/30 ,  C08F6/14 ,  C08J3/12 ,  C08F20/56 ,  C09K8/508 ,  C09K8/512 ,  C09K8/516 ,  C08K5/1535

    摘要： A method of preparing a polymer composite includes dispersing a nanosheet filler within a polymer matrix by dissolving a monomer in water to form a first solution, dispersing the nanosheet filler in an organic solvent in the presence of an emulsifying agent to form a second solution, combining the first solution and the second solution, and adding a polymerization initiator to initiate a polymerization reaction of the monomer to form a polymer composite precursor comprising the nanosheet filler dispersed in the polymer matrix. The method further includes quenching the polymerization reaction and then filtering, washing, grinding, and drying the polymer composite precursor to form the polymer composite. A method of preparing a polymer composite hydrogel for water shutoff applications and the associated method of forming a barrier to shut off or reduce unwanted production of water in a subterranean formation utilizing the polymer composite hydrogel is also provided.

    Method and process to make and use cotton-tipped electrochemical immunosensor for the detection of corona virus
    12.
    发明授权
    Method and process to make and use cotton-tipped electrochemical immunosensor for the detection of corona virus 有权

    公开(公告)号：US11035817B1

    公开(公告)日：2021-06-15

    申请号：US17092460

    申请日：2020-11-09

    申请人： Alfaisal University

    发明人： Shimaa Eissa ,  Mohammed Zourob

    IPC分类号： G01N27/327 ,  G01N33/569 ,  G01N33/543

    摘要： A method and process to make and use cotton-tipped electrochemical immunosensor for the detection of corona viruses is described. The immunosensor were fabricated by immobilizing the virus antigens on carbon nanofiber-modified screen printed electrodes which were functionalized by diazonium electrografting and activated by EDC/NHS chemistry. The detection of virus antigens were achieved via swabbing followed by competitive assay using fixed amount of antibody in the solution. Ferro/ferricyanide redox probe was used for the detection using square wave voltammetric technique. The limits of detection for our electrochemical biosensors were 0.8 and 0.09 pg/ml for SARS-CoV-2 and MERS-CoV, respectively indicating very good sensitivity for the sensors. Both biosensors did not show significant cross reactivity with other virus antigens such as influenza A and HCoV, indicating the high selectivity of the method.

    SURFACE POLYMERIZED PROPPANTS
    13.
    发明申请
    SURFACE POLYMERIZED PROPPANTS 有权

    公开(公告)号：US20210062076A1

    公开(公告)日：2021-03-04

    申请号：US16553328

    申请日：2019-08-28

    申请人： Saudi Arabian Oil Company ,  Alfaisal University

    发明人： Wengang Li ,  Edreese Alsharaeh ,  Ayman Almohsin ,  Mohammed Abdullah Bataweel

    IPC分类号： C09K8/80 ,  C09K8/70

    摘要： Coated particles include a particulate substrate, a surface copolymer layer surrounding the particulate substrate, and a resin layer surrounding the surface copolymer layer. The surface copolymer layer includes a copolymer of at least two monomers chosen from styrene, methyl methacrylate, ethylene, propylene, butylene, imides, urethanes, sulfones, carbonates, and acrylamides. The resin layer includes a cured resin. Methods of preparing the coated particles include preparing a first mixture including at least one polymerizable material, an initiator, and optionally a solvent; contacting the first mixture to a particulate substrate to form a polymerization mixture; heating the polymerization mixture to cure the polymerizable material and form a polymer-coated particulate; preparing a second mixture including the polymer-coated substrate, an uncured resin, and a solvent; and adding a curing agent to the second mixture to cure the uncured resin and form the coated particle.

    Method of making mutlilayer soil with property for extended release water for desert agriculture
    14.
    发明授权
    Method of making mutlilayer soil with property for extended release water for desert agriculture 有权

    公开(公告)号：US10772265B1

    公开(公告)日：2020-09-15

    申请号：US16675426

    申请日：2019-11-06

    申请人： Alfaisal University

    发明人： Edreese H Alsharaeh ,  Mohan Raj Krishnan

    IPC分类号： A01G24/42 ,  A01G24/35

    摘要： The multi-layered sand assembly comprising neat sand, super-hydrophilic and super-hydrophobic sands for feasible and sustainable desert agriculture is described. The ingredients such as PAM used in the super-hydrophilic sand layer and the PS-PMMA/DVB polymer for the super-hydrophobic layer are relatively less expensive and thus the overall development of the coated sand is economical and cost effective for the mass production of modified sand layers. The tandem action of high water absorption and retention over time by super-hydrophilic sand layer and high water repulsion to avoid water loss by super-hydrophobic sand of the proposed assembly would make the achievable agriculture in desert lands.

    Coated proppants and methods of making and use thereof
    18.
    发明授权
    Coated proppants and methods of making and use thereof 有权

    公开(公告)号：US11702587B2

    公开(公告)日：2023-07-18

    申请号：US17395981

    申请日：2021-08-06

    申请人： Saudi Arabian Oil Company ,  Alfaisal University

    发明人： Wengang Li ,  Edreese Alsharaeh ,  Mohan Raj Krishnan

    IPC分类号： C09K8/80

    CPC分类号： C09K8/805 ,  C09K2208/10

    摘要： Coated proppants include a proppant particle, a surface copolymer layer surrounding the proppant particle, and a resin layer surrounding the surface copolymer layer. The surface copolymer layer includes a copolymer of at least two monomers chosen from styrene, methyl methacrylate, ethylene, propylene, butylene, imides, urethanes, sulfones, carbonates, and acrylamides, where the copolymer is crosslinked by divinyl benzene. The resin layer includes a cured resin. Methods of preparing the coated proppants include preparing a first mixture including at least one polymerizable material, an initiator, and a crosslinker including divinyl benzene; contacting the first mixture to a proppant particle to form a polymerization mixture; heating the polymerization mixture to cure the polymerizable material and form a polymer-coated particulate; preparing a second mixture including the polymer-coated substrate, an uncured resin, and a solvent; and adding a curing agent to the second mixture to cure the uncured resin and form the coated proppant.