In this work, microbiologically-enhanced galvanic corrosion between the carbon steel beneath a deposit and bare steel was investigated in simulated oilfield-produced water containing sulfate-reducing bacteria (SRB), in this case Desulfotomaculum nigrificans. The results show that the SRB enhance the generation of a galvanic coupling effect between bare steel and the steel under the deposit, due to their different electrochemical potentials, resulting in accelerated corrosion of the steel under the deposit. In this galvanic couple the bare steel serves as the cathode and the steel under the deposit as the anode. As time increases, the bare steel also suffers from SRB-induced microbiologically influenced corrosion. The galvanic effect is reduced after a long period of incubation due to decreasing SRB activity. Moreover, in the presence of SRB the localized corrosion initiated on the steel under the deposit is greater than that occurring on bare steel.

在这项工作中，在模拟油田生产的含有硫酸盐还原细菌（SRB）的水中研究了沉积物下方的碳钢与裸钢之间的微生物增强的电偶腐蚀，在这种情况下为Desulfotomaculum nigrificans。结果表明，由于它们的电化学电势不同，SRB增强了裸钢与沉积物下方的钢之间的电耦合效应的产生，从而加速了沉积物下方的钢的腐蚀。在该电偶中，裸钢用作阴极，沉积物下方的钢用作阳极。随着时间的增加，裸钢也会遭受SRB诱导的微生物影响的腐蚀。由于SRB活性降低，长时间孵育后电流效应降低。此外，在存在SRB的情况下，在沉积物下在钢上引发的局部腐蚀大于在裸钢上发生的局部腐蚀。