This article discusses the effects of inhibitors used in the treatment of bacterial corrosion in the oil industry in southern Algeria on N80 steel corroded by Sulphate-Reducing Bacteria. These bacteria were found in the wells of water and oil. we find the problem of bacterial corrosion in the circuits of production and injection when petroleum is extracted . This bacterial corrosion occurs when petroleum which contains water touched the pipes for well long enough to be able to start corrosion. This problem results in the formation of deposits on the inner surface of pipes which lead to the risk of clogging, In this work, we studied the effect of Sulphate-Reducing Bacteria on the surface of N80 steel samples and the NORUST 720 and CH1377A inhibitors on the surface of samples already corroded by the bacteria.

Keywords : Bacterial Corrosion, Sulphate-Reducing Bacteria, Inhibitor, Steel N 80.