Effect of Sodium Dodecyl Sulfate on the growth of sulfate -reducing bacteria isolated from water associated with oil production in the North Rumaila field, Basra Governorate – Iraq

The current study included a study of the effect of chemical compounds as biocides on the effectiveness of sulfate -reducing bacteria that cause oil acidity in reservoirs. Samples of injection water used in extracting crude oil from the North Ramliyah oil wells were collected, and the number of bacteria present in that water was calculated. The effectiveness of Sodium Dodesyl Sulphate (SDS) on dormant bacteria by preparing active cultures and on wandering bacteria was used by placing wrought iron samples in active cultures for a week to form biofilms. The results showed a clear effectiveness of SDS on the growth of bacteria. The inhibitory concentration reached 30 parts per million (ppm) towards bacteria floating in the medium, while the inhibitory concentration reached 100 ppm Mtowards bacteria sheltered in the biological membrane.