The results of field testing for bacteria and related corrosion are presented for three crude oil and one gas pipeline. Large numbers of bacteria were usually found in the crude oil pipelines, but large bacteria populations did not result in accelerated corrosion in these lines. Crude oil pipeline corrosion was found to be most rapid in sediment deposits, which consisted of oil wet corrosion products, paraffins, and water. Both bacteria populations and corrosion rates were low in the gas pipeline studied, due to a high residual di-amine corrosion inhibitor content in the pipeline water.
KEYWORDS Monitoring, On-Line Monitoring, Pipeline Corrosion, MIC, Sulfate Reducing Bacteria, Acid Producing Bacteria, Sessile Bacteria