Abstract

During oil production, as well as its transportation, the formation of persistent oil-water emulsions is inevitable. Their occurrence is associated with the ingress of water into the bottomhole zone, mixing of oil with water in the well, as well as the negative impact of water on electric submersible and sucker rod pumps. As a result, when rising to the surface, oil degassing occurs. The settling of an emulsion of water and oil leads to the formation of “intermediate layers”. Within the framework of this study, it was considered what the intermediate layer is and methods of mitigating with it. The amount of sulfate-reducing and hydrocarbon-oxidizing bacteria in the samples was determined.

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