Separation method and apparatus

Details Separation method and apparatus Separation method and apparatus

C - Chemistry, Metallurgy

10

G

196/206

C10G 33/06 (2006.01) B01D 19/00 (2006.01)

Patent

CA 1119118

4497/4564 ABSTRACT OF THE DISCLOSURE A mixture containing crude oil, produced water, produced solids and not more than 20% by volume of gas is separated into an oil stream containing less than 1% by wt of water and a water stream containing less than 100 ppm of oil. The mixture is passed through a filter to remove produced solids and then through a coalescer vessel containing a fibrous coalescer element. Crude oil has gas dissolved therein to reduce viscosity and method is carried out under pressure to prevent gas in solution forming bubbles. Oil stream and water stream can each be cleaned up by passing through a further coalescer. Filter can be backwashed which may be continuous either with oil stream or feed mixture and the washings combined with the oil stream.

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