Corrosion inhibitor for gas field and preparation method thereof
A corrosion inhibitor, oil and gas field technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of poor film-forming performance, poor high temperature stability, and large temperature influence on corrosion inhibition performance, etc. Achieve the effect of changing solubility and distribution ratio, good anti-corrosion effect and good stability
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[0046] Example 1
[0047] Preparation of 2-octyl-1,10-phenanthroline[5,6]-1-hydroimidazole:
[0048] In a reactor equipped with a stirring and condensing device, 1,10-phenanthroline-5,6-dione, nonanal and ammonium acetate are dissolved in an appropriate amount of ethanol at a molar ratio of 1:1:5.5. Under the protection of nitrogen, the temperature was raised to 80°C and refluxed, reacted for 4 hours, cooled to room temperature, added appropriate amount of water to the system, filtered the precipitated solid with suction, and dried to obtain the phenanthroline imidazole intermediate 2-octyl-1,10-phenanthrene Rholine[5,6]-1-hydroimidazole, represented by "C8-PIM".
Example Embodiment
[0049] Example 2
[0050] Preparation of 2-decyl-1,10-phenanthroline[5,6]-1-hydroimidazole:
[0051] In a reactor with a stirring and condensing device, undecal aldehyde, 1,10-phenanthroline-5,6-dione and ammonium acetate are dissolved in an appropriate amount of ethanol at a molar ratio of 1:1:7, Under protection, the temperature was raised to 78°C and refluxed for 6 hours. Cooled to room temperature, added appropriate amount of water to the system, filtered the precipitated solid with suction, and dried to obtain the phenanthroline imidazole intermediate 2-decyl-1,10-phenanthroline [5,6] and-1-hydroimidazole, represented by "C10-PIM".
Example Embodiment
[0052] Example 3
[0053] Preparation of 2-undecyl-1,10-phenanthroline[5,6]-1-hydroimidazole:
[0054] In a reactor with a stirring and condensing device, lauric aldehyde, 1,10-phenanthroline-5,6-dione and ammonium acetate are dissolved in an appropriate amount of ethanol at a molar ratio of 1:1:9, and protected by nitrogen. The temperature was raised to 82°C and refluxed for 2 hours, and then cooled to room temperature. An appropriate amount of water was added to the system. The precipitated solid was filtered with suction and dried to obtain the phenanthroline imidazole intermediate 2-undecyl-1,10-phenanthroline. The morpho[5,6]-1-hydroimidazole is represented by "C11-PIM".
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