A new method to select demulsifiers and optimize dosage at wet crude oil separation facilities | Oil & Gas Science and Technology

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Table 5

Average water draw-off for different dosages of Demulsifier C.

Time	Target demulsifier dosage (ppm)	Actual demulsifier dosage (ppm)	Average water draw-off from Vessel 2 (%)
27-Apr	20	17 ± 3	1
29-Apr	30	26 ± 2	1
30-Apr	40	34 ± 3	5
2-May	50	42 ± 4	9
3-May	65	58 ± 4	11
4-May	30	26 ± 2	7 (corr. 1.5%)^a
5-May	20	18 ± 3	3 (corr. 1%)^a

Average of water drained from Vessel 2 when the accumulation of demulsifier in the process is taken into consideration.

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