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    Preparation of cationic surfactants
    15.
    发明授权
    Preparation of cationic surfactants 有权

    公开(公告)号：US11591292B2

    公开(公告)日：2023-02-28

    申请号：US17551945

    申请日：2021-12-15

    Applicant: Saudi Arabian Oil Company

    Inventor： Xuan Zhang ,  Ming Han ,  Jinxun Wang

    IPC: C07C237/52 ,  C07C231/02 ,  C07C233/36 ,  C07C233/38 ,  C09K8/584

    Abstract: Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.

    SULFONATED POLYMER
    16.
    发明申请
    SULFONATED POLYMER 有权

    公开(公告)号：US20220073662A1

    公开(公告)日：2022-03-10

    申请号：US17015799

    申请日：2020-09-09

    Applicant: Saudi Arabian Oil Company

    Inventor： Xuan Zhang ,  Ming Han ,  Jian Hou ,  Jinxun Wang

    IPC: C08F212/14 ,  C08F220/58 ,  C08F2/38 ,  C08K3/30 ,  C08K5/23 ,  C08F226/02 ,  C08F2/01 ,  C08F2/04 ,  C08F2/44

    Abstract: Copolymer compositions and methods of making copolymer compositions with enhanced stability in high temperature and high salinity environments. The copolymers include hydrophobic monomers and sulfonated monomers. The sulfonated monomers can include 2-acrylamido-2-methylpropane sulfonic acid and allyl sulfonate. The sulfonated monomers increase the stability of the polymers in harsh conditions, and in high temperature, high salinity environments. The sulfonated monomers also reduce or prevent the hydrolysis of acrylamide groups, and therefore enhance the stability of the copolymer. The copolymer compositions can be made with free radical polymerization and an initiation complex.

    PREPARATION OF CATIONIC SURFACTANTS
    17.
    发明申请
    PREPARATION OF CATIONIC SURFACTANTS 有权

    公开(公告)号：US20220033348A1

    公开(公告)日：2022-02-03

    申请号：US16942565

    申请日：2020-07-29

    Applicant: Saudi Arabian Oil Company

    Inventor： Xuan Zhang ,  Ming Han ,  Jinxun Wang

    IPC: C07C237/52 ,  C09K8/584 ,  C07C231/02

    Abstract: Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.

    METHOD TO DETERMINE TRACE AMOUNTS OF CRUDE OIL BY SPECTROSCOPIC ABSORPTION
    18.
    发明申请
    METHOD TO DETERMINE TRACE AMOUNTS OF CRUDE OIL BY SPECTROSCOPIC ABSORPTION 有权
    通过光谱吸收法测定原油的追踪量的方法

    公开(公告)号：US20150021490A1

    公开(公告)日：2015-01-22

    申请号：US13945309

    申请日：2013-07-18

    Applicant: Saudi Arabian Oil Company

    Inventor： Ming Han ,  Ali Abdallah Al-Yousef ,  Salah Hamad Al-Saleh ,  Mohammed Ali AlGeer ,  Abdullah Alboqmi

    IPC: G01N21/33

    CPC classification number: G01N21/33 ,  B01D11/00 ,  G01N1/38 ,  G01N1/4055 ,  G01N33/1833 ,  G01N33/26 ,  G01N33/28 ,  G01N2001/4061 ,  G01N2015/0693

    Abstract: The present invention relates to a method for determining trace amounts of crude oil in water, including the steps of collecting a sample of an oil-containing fluid, adding a toluene extraction volume to the sample, perturbing the sample, dissolving substantially all of the amount of oil in the toluene extraction volume to create a mixed sample, extracting the mixed sample to create an oil-in-toluene layer and an aqueous fluid layer, removing a portion of the oil-in-toluene layer into a dilution container, diluting the portion of the oil-in-toluene layer with a toluene dilution volume to create a dilute sample, measuring an absorption value of the dilute sample using a spectrophotometer, and comparing the absorption value to a calibration curve to quantify the amount of oil in the oil-containing fluid.

    Abstract translation: 本发明涉及一种测定水中痕量原油的方法，包括以下步骤：收集含油流体的样品，向样品中加入甲苯萃取体积，扰动样品，溶解基本上所有的量 的油在甲苯萃取体积中以产生混合样品，萃取混合样品以产生甲苯含量层和水性流体层，将一部分甲苯中的甲苯层除去到稀释容器中，稀释 甲苯层中的部分甲苯稀释体积以产生稀释样品，使用分光光度计测量稀释样品的吸收值，并将吸光值与校准曲线进行比较以量化油中的油量 含有流体。

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