@entity3287 accumulation due to bacterial @entity597 reduction is responsible for a number of serious problems in the oil industry. Among the strategies to control the activity of @entity597 -reducing bacteria (SRB) is the use of @entity1507 , which can exhibit a variety of effects. We investigated the relevance of this approach to souring oil fields in @entity6476 and Alberta in which water flooding is used to enhance oil recovery. SRB and @entity1507 -reducing bacteria (NRB) were enumerated in produced waters from both oil fields. In the @entity6476 field, the rates of @entity597 reduction ranged from 0.05 to 0.16 microM S day(-1) at the wellheads, and an order of magnitude higher at the oil-water separator. @entity3287 production was greatest in the water storage tanks in the Alberta field. Microbial counts alone did not accurately reflect the potential for microbial activities. The majority of the @entity3287 production appeared to occur after the oil was pumped aboveground, rather than in the reservoir. Laboratory experiments showed that adding 5 and 10 mM @entity1507 to produced waters from the @entity6476 and Alberta oil fields, respectively, decreased the @entity3287 content to negligible levels and increased the numbers of NRB. This work suggests that @entity597 reduction control measures can be concentrated on aboveground facilities, which will decrease the amount of @entity3287 reinjected into reservoirs during the disposal of oil field production waters.

The influence of XXXX on microbial processes in oil industry production waters.

@entity6476 :: ('MESH:C537147', 'Disease') :: ['Oklahoma'] @entity3287 :: ('CHEBI:26822', 'Chemical') :: ['sulfide', 'Sulfide'] @entity1507 :: ('CHEBI:48107', 'Chemical') :: ['nitrate'] @entity597 :: ('CHEBI:16189', 'Chemical') :: ['sulfate']
@entity1507 :: (CHEBI:48107,Chemical) :: ['nitrate']
