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Acid fracturing is a widely employed reservoir stimulation technology in the development of oil and gas fields, playing a pivotal role in enhancing production. However, the corrosion of oil tubing requires careful attention, as it can lead to significant safety incidents and substantial economic losses if not properly managed. In this study, a novel corrosion inhibitor based on quinoline quaternary ammonium salt was synthesized to reduce the corrosion rate of HP-13Cr in acidic solutions. FT-IR and EIS-MS analyses confirmed the main components of the inhibitor. Its performance was evaluated through electrochemical tests, weight loss measurements, morphology analysis, contact angle assessments, etc. The results demonstrate that the quinoline quaternary ammonium salt mixture exhibits excellent anti-corrosion properties for HP-13Cr in 15% HCl solutions over a temperature range of 298–363 K. Additionally, micro-infrared spectroscopy, density functional theory (DFT) calculations, and other methodologies were employed to elucidate the anticorrosion mechanism of the inhibitor.

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Exploration of Quinoline Quaternary Ammonium Salt Mixture as a Highly Effective Corrosion Inhibitor for HP-13Cr in Acid Solution

  • 会议论文

  • 发表日期：

    2026年

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  • Rong Wei,
  • Yuan Wang,
  • Juantao Zhang,
  • Xuanpeng Li,
  • Zihan Chen,
  • Anqing Fu,
  • Yin Chengxian

摘要

Acid fracturing is a widely employed reservoir stimulation technology in the development of oil and gas fields, playing a pivotal role in enhancing production. However, the corrosion of oil tubing requires careful attention, as it can lead to significant safety incidents and substantial economic losses if not properly managed. In this study, a novel corrosion inhibitor based on quinoline quaternary ammonium salt was synthesized to reduce the corrosion rate of HP-13Cr in acidic solutions. FT-IR and EIS-MS analyses confirmed the main components of the inhibitor. Its performance was evaluated through electrochemical tests, weight loss measurements, morphology analysis, contact angle assessments, etc. The results demonstrate that the quinoline quaternary ammonium salt mixture exhibits excellent anti-corrosion properties for HP-13Cr in 15% HCl solutions over a temperature range of 298–363 K. Additionally, micro-infrared spectroscopy, density functional theory (DFT) calculations, and other methodologies were employed to elucidate the anticorrosion mechanism of the inhibitor.