Page 292 - Hydrocarbon Exploration and Production Second Edition

Surface Facilities 279

production
separator
oil, gas and recovered
water from oil to vent/flare
reservoir

produced water
500-1000 ppm hydrocyclone
oil in water
degasser
skimmed
oil
produced water
40 ppm oil in water
“clean” water
< 30 ppm
oily water inlet
concentrated accelerating
oil reject helical flow
pattern
oil droplets
migrate to oil core
reject orifice

central
oil core clean water
outlet
back
pressure valve

concentrated oil reject

support posts
reject plate
hydrocyclone
reject oil gallery

clean water
outlet

oily water
inlet

Figure 11.13 Hydrocyclone for oil-in-water removal.