9,10-Anthraquinone applications to control biogenic production of hydrogen sulfide in the near wellbore formation in gas storage fields

摘要

Biogenic production of hydrogen sulfide in gas storage reservoirs is increasing as storage fields age.Attempts to mitigate this phenomenon have been primarily limited to treatment of the injected gas with organic biocides or perodic downhole treatments with organic biocides.These treatment attempts have resulted in only limited success at decreasing the rate of reservoir sourcing.9,10-Anthraquinone(anthraquinone) has been shown to inhibit biogenic production of sulfides in oilfield water systems for extended periods of time.Anthraquinone functions as a sulfide inhibitor by forming insoluble,sub-micron sized particles that become incorporated into the biofilm.Subsequent to incorporation into the biofilm,the anthraquinone is transported into the cells of sulfate reducing bacteria (SRB) where it blocks production of ATP and ultimately reduction to sulfide.