Abstract

Continuous & effective bio-corrosion monitoring task is highly critical for fast & direct detection of microbial-induce corrosion growth risk pattern within an upstream processing system. This might due to changes in fluid characteristic by time. Failure in detecting such risk changes might trigger for occurrences of serious corrosion-related issue. This study incorporated new detection using AccucountTM energy-based detection kits into monitoring task along with conventional API RB38 SRB test vials & Kitagawa Hydrogen Sulfide gas test. Besides focusing on pipeline microbial growth risk, the monitoring are extended throughout the processing stages to identify the potential & direct microbial risk. The test are carried out at three different sampling time frame; one week after previous treatment, two weeks after treatment & after newly established treatment. The results offer valuable information on the weak point of established treatment program which has previously been overlooked by conventional methods; medium-risk growth in stagnant point, medium risk well-pools & potential solid sedimentation in stagnant point. Time kill test shows high effectiveness of current biocide that been applied into system. Besides, internal corrosion inspection of production separator identified twelve pitting formations. Developing microbial controlling strategy for offshore platform may varies by locations. Accurate and rapid process monitoring leads to correct and well-targeted solutions to potentially detrimental problem. A complete assessment with different set of viewpoints are highly critical in order for a cost effectiveness and further optimize the mitigation method.

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