Quaternary ammonium salt and preparation method and use thereof as inhibitor, and water-based drilling fluid and use thereof
AssigneesYangtze University, Jingzhou Jiahua Technology Co., Ltd.
InventorsMingbiao Xu, Fuchang You, Kai Jiao, Shusheng Zhou
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Abstract
Provided are a quaternary ammonium salt and a preparation method and use thereof as an inhibitor, and a water-based drilling fluid and use thereof. The quaternary ammonium salt has a structure shown in formula I, wherein, in the formula I, R1 is selected from the group consisting of —H and —COOH; R2 is selected from the group consisting of —H and —CH2—COOH; R3 is selected from the group consisting of —NH—CH2—CH2—CH2—NH2, —NH—CH2—CH2—NH2, —NH—CH2—CH2—OH, —O—CH2—CH2—NH2, —N—(CH2—CH2—OH)2, and —O—CH2—CH2—NH—CH2—CH2—OH; and n and m are independently 10 to 15.
Claims14
A quaternary ammonium salt, having a structure shown in formula I:
- formula I;
- wherein, in the formula I,
- R1 is selected from the group consisting of —H and —COOH;
- R2 is selected from the group consisting of —H and —CH2—COOH;
- R3 is selected from the group consisting of —NH—CH2—CH2—CH2—NH2, —NH—CH2—CH2—NH2, —NH—CH2—CH2—OH, —O—CH2—CH2—NH2, —N—(CH2—CH2—OH)2, and —O—CH2—CH2—NH—CH2—CH2—OH;
- and
- n and m are independently 10 to 15.
Dependencies are inferred from the claim text.