Corrosion Behaviors of N80 and 1Cr Tubing Steels in CO2 Containing Downhole Environment—A Case Study of Underground Gas Storage in LiaoHe Oil Field
نویسندگان
چکیده
In order to evaluate the effect of chromium content in carbon steel on corrosion resistance materials, behavior 1Cr and N80 steels was investigated this study by immersion weight loss method under three different CO2 partial pressure temperature conditions formation water for 72, 168 336 h. Detailed material surface morphological characterization performed scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), confocal laser (CLSM). The results show that pitting is serious at medium low (50 °C, 0.30 MPa), rate significantly higher than steel. However, high-temperature high (100 °C/0.63 MPa 114 °C/0.73 more inclined mesa dominated local characteristics, seriously with uniform corrosion. From experimental results, we can know not only affected environment, but also depends process product film, as well its compactness integrity characteristics. At low-temperature pressure, 1 wt.% provide a certain degree resistance, while broaden application window weaken inhibition chromium.
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ژورنال
عنوان ژورنال: Coatings
سال: 2023
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings13040737