Produced Water

High Efficiency De-oiling for Improved Produced Water Quality

By Michael K. Bridle


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In the thermal heavy oil industry, injection of steam into the reservoir reduces the viscosity of the heavy oil, also known as bitumen, and allows the resulting emulsion, which is a mixture of oil, water and gas to flow to the well bore from where it is lifted to the surface by a variety of methods. The three phases are separated, and the produced water is treated so that it is suitable for feedwater in the steam generation equipment. Gas-fired OTSGs have been used exclusively in the industry for decades, primarily because the feedwater quality requirement is much less stringent than for drum boilers.

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