High Efficiency De-oiling for Improved Produced Water Quality
By Michael K. Bridle
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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