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  • New nitrate-based treatments control hydrogen sulfide in reservoirs


    D. Hitzman and M. Dennis

    Biogenic formation of hydrogen sulfide has, and will, occur in most oil and gas reservoirs – particularly those flooded with sea water. Hydrogen sulfide causes high costs and serious operational problems, including reservoir souring, sulfide corrosion, iron sulfide plugging, reduced product value, and health and environmental hazards. Historically, the sulfide problem has been treated with toxic biocides, which have proven to be costly and mostly ineffective. The petroleum industry is now implementing a nitrate-based microbial treatment technology for both the prevention and removal of sulfide from reservoirs, produced water, surface facilities, pipelines and gas storage reservoirs, as well as increasing oil recovery.

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