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    Restoring core samples
    1.
    发明授权
    Restoring core samples 有权

    公开(公告)号：US11906417B2

    公开(公告)日：2024-02-20

    申请号：US17569141

    申请日：2022-01-05

    Applicant: Saudi Arabian Oil Company

    Inventor： Ying Wang ,  Ming Han ,  Dongqing Cao ,  Jinxun Wang

    IPC: G01N15/08 ,  G01N33/24

    CPC classification number: G01N15/0826 ,  G01N15/08 ,  G01N15/082 ,  G01N15/0806 ,  G01N15/088

    Abstract: The systems and method described in this specification relate to at least partially restoring porosity and brine permeability of carbonate core samples. The systems and methods include extracting a carbonate core sample from a subterranean formation. The extracted carbonate core sample is inserted into a core flooding test machine. A first porosity and a first brine permeability of the extracted carbonate core sample is measured. A fluid is pumped through the extracted carbonate core sample to flood the carbonate core sample. The fluid includes at least one of a high-molecular weight polymer solution and a gel particle solution. The systems and methods include at least partially restoring the porosity and the brine permeability of the carbonate core sample by pumping an oxidizing solution through the flooded carbonate core sample and heating the carbonate core sample to a temperature of at least 60° C. after pumping the oxidizing solution through the carbonate core sample.

    COMPOSITION AND METHOD OF MAKING CATIONIC SURFACTANTS WITH TWO QUATERNARY AMMONIUM HEAD GROUPS
    4.
    发明申请
    COMPOSITION AND METHOD OF MAKING CATIONIC SURFACTANTS WITH TWO QUATERNARY AMMONIUM HEAD GROUPS 有权

    公开(公告)号：US20230102729A1

    公开(公告)日：2023-03-30

    申请号：US17490686

    申请日：2021-09-30

    Applicant: SAUDI ARABIAN OIL COMPANY

    Inventor： Xuan Zhang ,  Ming Han ,  Jinxun Wang ,  Dongqing Cao

    IPC: C09K8/584

    Abstract: A surfactant composition is provided. The composition includes chemical structure represented by Formula (1): where R1 represents a hydrocarbon group, a substituted hydrocarbon group, an alkyl ester group, or an alkyl amine having from 4 to 28 carbon atoms, and R2 and R3 represent hydrocarbon groups having from 1 to 5 carbon atoms. Also provided is a composition including a brine comprising a total salinity of at least 20,000 mg/L and the chemical structure shown in Formula (1). Methods of making a composition including the chemical structure represented by Formula (1) are also provided.

    Surfactant mixtures used during chemical enhanced oil recovery and methods of use thereof
    5.
    发明授权
    Surfactant mixtures used during chemical enhanced oil recovery and methods of use thereof 有权

    公开(公告)号：US11254855B2

    公开(公告)日：2022-02-22

    申请号：US16683761

    申请日：2019-11-14

    Applicant: Saudi Arabian Oil Company

    Inventor： Limin Xu ,  Ming Han ,  Alhasan Fuseni ,  Dongqing Cao

    IPC: C09K8/584 ,  E21B43/16

    Abstract: Surfactant mixtures include a cationic surfactant, an anionic surfactant, and a nonionic surfactant in a brine solution. The cationic surfactant may include at least one quaternary ammonium, at least one brominated trimethylammonium, or combinations thereof. The anionic surfactant may include at least one organosulfate. The nonionic surfactant may include the nonionic surfactant comprised of a polyoxyethylene fatty acid ester, a phenylated ethoxylate, or combinations thereof. The surfactant mixtures may be incorporated into methods for reducing the interfacial tension between the surfactant mixture and oily fluids during chemical enhanced oil recovery. The methods for reducing the interfacial tension may include introducing the surfactant mixture comprising a cationic surfactant, an anionic surfactant, and a nonionic surfactant in a brine solution to a hydrocarbon-bearing reservoir, thereby reducing the interfacial tension at a liquid-liquid interface of the surfactant mixture and the fluid.

    Chemical imbibition by gels containing surfactants for fractured carbonate reservoirs
    6.
    发明授权
    Chemical imbibition by gels containing surfactants for fractured carbonate reservoirs 有权

    公开(公告)号：US10927290B2

    公开(公告)日：2021-02-23

    申请号：US15267915

    申请日：2016-09-16

    Applicant: Saudi Arabian Oil Company

    Inventor： Ming Han ,  Jinxun Wang ,  Dongqing Cao ,  Abdullah Al-Boqmi ,  Amar J. Alshehri

    IPC: C09K8/588 ,  C09K8/50 ,  C09K8/584 ,  E21B43/20

    Abstract: An imbibition gel composition that induces spontaneous imbibition of a water phase into a reservoir matrix is provided. The imbibition gel composition including a surfactant, the surfactant operable to alter the wettability of a surface of a reservoir matrix from oil-wet toward water-wet and the surfactant further operable to diffuse through the water phase. The imbibition gel composition further including a gel system, the gel system operable to retain the surfactant and the gel system further operable to release the surfactant in the presence of the water phase, where altering the wettability of the surface of the reservoir matrix toward water-wet induces the spontaneous imbibition of the water phase into the reservoir matrix.

    DESIGN AND USAGE OF AN ARTIFICIAL FRACTURE SETUP FOR GEL EVALUATION
    7.
    发明申请
    DESIGN AND USAGE OF AN ARTIFICIAL FRACTURE SETUP FOR GEL EVALUATION 有权

    公开(公告)号：US20250052146A1

    公开(公告)日：2025-02-13

    申请号：US18000877

    申请日：2022-05-05

    Applicant: SAUDI ARABIAN OIL COMPANY

    Inventor： Ayman M. Almohsin ,  Dongqing Cao ,  Ming Han ,  Bader G. Alharbi

    IPC: E21B47/117

    Abstract: A system and method of testing pre-formed particle gels in an artificial fracture system may include introducing a suspension including a pre-formed particle gel into a testing device that includes an artificial fracture setup with a plurality of fracture model units. The system may be configured to inject pre-formed particle gels into an accumulator with magnetic stirrers first and then into a series of fracture model units configured to receive a fluid through a flow channel and, change the flow channel in a transverse direction relative to the direction of the fluid flow.

    Composition and method of making cationic surfactants with two quaternary ammonium head groups
    8.
    发明授权
    Composition and method of making cationic surfactants with two quaternary ammonium head groups 有权

    公开(公告)号：US11795374B2

    公开(公告)日：2023-10-24

    申请号：US17490686

    申请日：2021-09-30

    Applicant: SAUDI ARABIAN OIL COMPANY

    Inventor： Xuan Zhang ,  Ming Han ,  Jinxun Wang ,  Dongqing Cao

    IPC: C09K8/584

    CPC classification number: C09K8/584

    Abstract: A surfactant composition is provided. The composition includes chemical structure represented by Formula (1):




    where R1 represents a hydrocarbon group, a substituted hydrocarbon group, an alkyl ester group, or an alkyl amine having from 4 to 28 carbon atoms, and R2 and R3 represent hydrocarbon groups having from 1 to 5 carbon atoms. Also provided is a composition including a brine comprising a total salinity of at least 20,000 mg/L and the chemical structure shown in Formula (1). Methods of making a composition including the chemical structure represented by Formula (1) are also provided.

    RESTORING CORE SAMPLES
    10.
    发明公开
    RESTORING CORE SAMPLES 审中-公开

    公开(公告)号：US20230212943A1

    公开(公告)日：2023-07-06

    申请号：US17569141

    申请日：2022-01-05

    Applicant: Saudi Arabian Oil Company

    Inventor： Ying Wang ,  Ming Han ,  Dongqing Cao ,  Jinxun Wang

    IPC: E21B49/00 ,  G01N15/08

    CPC classification number: E21B49/001 ,  G01N15/082 ,  G01N15/088 ,  G01N15/0806

    Abstract: The systems and method described in this specification relate to at least partially restoring carbonate core samples. The systems and methods include extracting a carbonate core sample from a subterranean formation. The extracted carbonate core sample is inserted into a core flooding test machine. A first brine permeability of the extracted carbonate core sample is measured. A fluid is pumped through the extracted carbonate core sample to flood the carbonate core sample. The fluid includes at least one of a high-molecular weight polymer solution and a gel particle solution. The systems and methods include at least partially restoring the porosity and the brine permeability of the flooded carbonate core sample by pumping an oxidizing solution through the carbonate core sample and heating the carbonate core sample to a temperature of at least 60° C. after pumping the oxidizing solution through the carbonate core sample.

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