Interest revives in downhole oil-water separators

As oil prices have increased, interest in downhole oil-water separators (DOWS) has returned after a 2-year lull caused by a low oil price and the nervousness of operators to install relatively unproven technology, which in many trials had proven uneconomical.DOWS technology aims to reduce produced water at the surface by separating it from oil downhole and simultaneously injecting it underground. The technology holds great promise for reducing produced-water disposal costs and protecting potable-water aquifers. It has, in some instances, increased oil production from wells in which it has been installed.During the last 2 years, some DOWS vendors have ceased actively marketing their DOWS t...

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