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    COUPLING AGENTS FOR USE IN CORROSION INHIBITING COMPOSITIONS
    3.
    发明申请
    COUPLING AGENTS FOR USE IN CORROSION INHIBITING COMPOSITIONS 审中-公开

    公开(公告)号：WO2021127377A1

    公开(公告)日：2021-06-24

    申请号：PCT/US2020/065917

    申请日：2020-12-18

    Applicant: M-I L.L.C. ,  M-I DRILLING FLUIDS UK LTD.

    Inventor： CHEN, Yiyan ,  CARDWELL, William Brett ,  JENKINS, Alyn

    IPC: C23F11/16 ,  C23F11/12 ,  C23F11/04 ,  E21B41/02 ,  C09D5/08 ,  C09K8/54

    Abstract: Corrosion inhibition compositions and methods useful for inhibiting corrosion are provided. The corrosion inhibition compositions comprise at least one coupling agent and at least one corrosion inhibitor, wherein the at least one coupling agent is at least one of one or more ether amines, one or more ether amine oxides, and at least one combination thereof, and the at least one corrosion inhibitor is at least one selected from one or more thiophosphates, one or more polyphosphate esters, one or more imidazolines, one or more quinolines, one or more alkynols, one or more alkynol derivatives, and at least one combination thereof. The methods for inhibiting corrosion on metal surfaces utilize the disclosed corrosion inhibiting compositions.

    一种松香基咪唑啉衍生物缓蚀剂的合成方法及其应用
    6.
    发明申请
    一种松香基咪唑啉衍生物缓蚀剂的合成方法及其应用 审中-公开

    公开(公告)号：WO2020024601A1

    公开(公告)日：2020-02-06

    申请号：PCT/CN2019/080276

    申请日：2019-03-29

    Applicant: 广东石油化工学院

    Inventor： 程丽华 ,  郭文姝 ,  王慧 ,  朱华平 ,  黄敏 ,  许江兵 ,  谭达刚

    IPC: C07F9/6506 ,  C23F11/04

    Abstract: 本发明涉及用于金属防腐蚀化合物的合成于应用，具体公开了一种松香基咪唑啉衍生物缓蚀剂的合成方法及其应用，在合成过程中以三乙烯四胺与脱氢松香酸为原料制得松香基咪唑啉衍生物缓蚀剂中间体，再以亚磷酸对其进行曼尼希反应改性，制得一种松香基咪唑啉衍生物缓蚀剂，利用红外光谱对其结构进行表征，以电化学法、动态失重法、能谱分析和扫描电子显微镜等方法分析发现，缓蚀剂对金属具有很好地缓蚀作用，同时缓蚀剂的添加能够降低腐蚀电流密度，使腐蚀速率减小。

    DOWNHOLE METHODS USING ACID COMPOSITIONS COMPRISING CORROSION INHIBITORS
    7.
    发明申请
    DOWNHOLE METHODS USING ACID COMPOSITIONS COMPRISING CORROSION INHIBITORS 审中-公开

    公开(公告)号：WO2019213741A1

    公开(公告)日：2019-11-14

    申请号：PCT/CA2019/000068

    申请日：2019-05-10

    Applicant: FLUID ENERGY GROUP LTD.

    Inventor： PURDY, Clay ,  WEISSENBERGER, Markus

    IPC: C09K8/54 ,  C23F11/04 ,  E21B41/02 ,  E21B43/26 ,  E21B43/27 ,  E21B33/12 ,  E21B43/11

    Abstract: A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: providing a wellbore in need of stimulation; inserting a plug in the wellbore at a predetermined location; inserting a perforating tool and a spearhead or breakdown acid into the wellbore; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; removing the tool form the wellbore; and initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.

    IN-SITU NEUTRALIZATON MEDIA FOR DOWNHOLE CORROSION PROTECTION
    9.
    发明申请
    IN-SITU NEUTRALIZATON MEDIA FOR DOWNHOLE CORROSION PROTECTION 审中-公开

    公开(公告)号：WO2019060321A1

    公开(公告)日：2019-03-28

    申请号：PCT/US2018/051576

    申请日：2018-09-18

    Applicant: BAKER HUGHES, A GE COMPANY, LLC

    Inventor： SARMIENTO KLAPPER, Helmuth ,  XU, Zhiyue

    IPC: E21B41/02 ,  C23F11/04 ,  C09K8/54

    Abstract: Inhibiting or preventing corrosion of metallic components downhole may be accomplished by introducing neutralization media into a wellbore in the proximity of downhole metallic components, where the neutralization media comprises magnesium and where the method further includes subsequently contacting the neutralization media with a potentially corrosive environment comprising at least 5 volume % water, where the water has a pH of less than 11. This contacting activates the neutralization media with the water thereby releasing magnesium ions, and the magnesium ions react with hydroxyl ions of the water to give magnesium hydroxide in an amount effective to raise the pH of the water present to be between 8 and 12 thereby inhibiting or preventing corrosion of metallic components downhole.

    COMPOSITION AND METHOD FOR INHIBITING CORROSION AND SCALE
    10.
    发明申请
    COMPOSITION AND METHOD FOR INHIBITING CORROSION AND SCALE 审中-公开

    公开(公告)号：WO2019005429A1

    公开(公告)日：2019-01-03

    申请号：PCT/US2018/035861

    申请日：2018-06-04

    Applicant: NCH CORPORATION

    Inventor： DREWNIAK, Marta ,  STEIMEL, Lyle, H.

    IPC: C02F5/12 ,  C02F5/14 ,  C23F11/04

    Abstract: A composition and method of inhibiting corrosion, white rust, and scale formation on components in a water system. The composition preferably comprises an amino-acid based polymer (most preferably a potyaspartic acid or a salt thereof), hydroxyphosphonoacetic acid, and a second phosphonic acid (preferably a phosphonocarboxylic acid), and does not require the use of regulated metals. The composition is effective even in the presence of biocides. A preferred method of inhibiting white rust comprises adding an amino-acid based polymer or hydroxyphosphonoacetic acid or both to the water system. A preferred method of inhibiting corrosion, white rust, and scale formation comprises adding an amino-acid based polymer, hydroxyphosphonoacetic acid, and a phosphonocarboxylic acid to the water system. Preferably the active concentrations are at least 3 ppm each of the amino-acid based polymer and hydroxyphosphonoacetic acid when added to a volume of water in the water system.

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