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Petroleum Engineer's Guide to Oil Field Chemicals and Fluids by Johannes Fink

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Chapter 5. Bacterial Control
Major problems in oil and gas operations result from the biogenic formation of hydrogen sulfide (H2S) in the reservoir, which results in increased corrosion and iron sulfide formation leading to higher operating costs and reduced revenue. The gas also constitutes a serious environmental and health hazard.
In secondary oil recovery, which involves waterflooding of the oil-containing formation, biofilms can plug the oil-bearing formation, and severe corrosion can result from the production of acids associated with the growth of certain bacterial biofilms. These biofilms are often composed of sulfate-reducing bacteria, which grow anaerobically in water, often in the presence of oil and natural gases. Once biofilms are ...

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