Research is carried out according to the data from a multi-stage compact flotation unit （CFU） experiment on a floating produced, storage and offloading unit （FPSO） in a heavy oilfield, as well as the running data of CFU on a wellhead platform in a heavy oilfield. The oil removal rate of two-stage CFU is high, according to the experiment data from FPSO. The oil content in produced water after three-stage CFU on the wellhead platform is decreased to about 27 mg/L. So, the multi-stage CFU can achieve a good result in offshore heavy oilfield. A two-stage CFU can replace corrugated plate interceptor and gas floator. Besides, the multi-stage CFU is small and light, which is suitable to offshore oilfields.
WANG Hai-yan, WANG Chun-sheng, ZHANG Ming, SHANG Chao, SUN Hong-hui, ZHENG Xiao-peng
. Research of Multi-Stage CFU Process for Produced Water Treatment in Offshore Heavy Oilfield[J]. Ocean Engineering Equipment and Technology, 2018
, 5(1)
: 16
-19
.
DOI: 10.12087/oeet.2095-7297.2018.01.04
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