C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
204/179, 196/206
C10G 33/02 (2006.01)
Patent
CA 1152019
ABSTRACT OF THE DISCLOSURE An apparatus and method of using the same to separate a heavy crude oil emulsion into gas, brine and oil, as the emulsion flows longitudinally through first, second, and third elongate zones of a treater. Heat is applied to the emulsion in the first zone to allow free brine and gas to separate therefrom, and in the second zone to further reduce oil vis- cosity and thus allow the emulsified brine to separate. Oil thus heated containing the remaining emulsified brine flows in horizontal stream flow into the third zone to be subjected to at least one horizontal high potential electrical field. In the presence of this electrostatic field the dipole mole- cular structure of water promotes the coalescing of droplets of brine remaining therein into drops. These drops of brine then settle by gravity to the bottom of the third zone. A wall maintains the liquid level in the third zone at an elevation where the electrodes that supply the high potential electrical field are at all times immersed in the oil, and also prevents the brine-free oil in the reservoir from comingling with oil that is being treated in the third zone. Gas separating from the emulsion accumulates in the upper portion of the first, second and third zones and water in the lower portion of the zones. The gas and brine that so accumulate are withdrawn to desired external location as the treating operation proceeds. The electrodes forming the electrostatic grid are adjustably mounted to form variable horizontal gaps which may be modified for optimum electro- static coalescing.
377379
Bull Hendrix R.
Swabey Ogilvy Renault
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