Abstract We have previously studied the effect of nitrate addition on the souring caused by sulfate-reducing bacteria (SRB). It revealed that the nitrate addition could suppress the growth of SRB and stimulate the growth of nitrate-reducing bacteria (NRB). It is not quite clear, however, whether NRB could lead to souring in oil fields and Microbiologically Influenced Corrosion (MIC). In this study, we isolated NRB and investigated the effect of isolated NRB on souring and MIC. Based on 16S ribosomal RNA identification, isolated NRB belongs to the genus Marinobacter and was named Marinobacter YB03. This bacterium is identified as NRB with sulfate reducing ability. Severe pitting corrosion was found on the carbon steel coupon associated with YB03. Therefore, YB03 promotes souring and corrosion.

中文翻译：

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硝酸盐还原菌 Marinobacter YB03 对碳钢生物酸化和微生物腐蚀的贡献

摘要 我们之前研究了硝酸盐添加对硫酸盐还原菌 (SRB) 引起的酸化的影响。结果表明，硝酸盐的添加可以抑制SRB的生长并刺激硝酸盐还原菌（NRB）的生长。然而，目前尚不清楚 NRB 是否会导致油田酸化和微生物腐蚀 (MIC)。在这项研究中，我们分离了 NRB 并研究了分离的 NRB 对酸化和 MIC 的影响。根据16S核糖体RNA鉴定，分离得到的NRB属于Marinobacter属，命名为Marinobacter YB03。该细菌被鉴定为具有硫酸盐还原能力的NRB。在与 YB03 相关的碳钢试样上发现了严重的点蚀。因此，YB03促进酸化和腐蚀。