51313-02248-Microbial Community With Corr. Products Collected from Sour Oil Crude & Seawater Injection Pipelines

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Product Number: 51313-02248-SG

ISBN: 02248 2013 CP

Author: Faisal Alabbas

Publication Date: 2013

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Hydrocarbon transporting pipeline and seawater injection networks are subject to different corrosion deterioration mechanisms one of which is microbiologically influenced corrosion (MIC). MIC is caused by a wide range of microorganisms that thrive in the oil reservoirs and associated secondary seawater injection systems. To gain insight into the impact of microbes on corrosion in oil and sea water injection pipelines the microbial diversity of corrosion products samples collected from a sour oil pipeline and a seawater pipeline were evaluated. As cultivation-based methodologies can greatly underestimate the microbial diversity associated with an environment the microbial populations of sour crude oil and seawater pipeline samples was evaluated with a 16S rRNA pyroscquencing approach. The sequence results indicate that the microbial communities in the corrosion products obtained from both the sour oil pipeline and seawater pipeline were dominated by Bacteria; though Archaeal sequences (predominately Methanobacteriales) were also identified in the sour sample. For the sour sample the dominant phylotypes include Synergistales Thermoanaerobacterales and Syntrophobacterales; while for the seawater injection sample the dominant phylotypes include Rhodobacterales Flavobacteriales Kiloniellales and Desulfovibrionales. This paper discusses the microbial diversity on the collected samples and their potential contribution to MIC for both systems