1. SETTLING TANK
The settling separator is the third separation stage of the oil processing system. The first two
stages are high and low pressure degassers. Each tank contains three compartments; one
large tank where separation takes place and two collection sections (caissons) for the crude oil
and produced water.
At the interface level the crude will rise and the water will settle. To transport the produced
water and crude oil to downstream processes underflow and overflow connections shall be
provided to respectively the produced water and crude oil compartments.
The main separation will take place in the settling separator tank. The compartments are just
used to displace the liquids from the tank to downstream processes.
Contractor shall consider that vapor from settling tanks shall return to process plant for
treatment, upstream the VRU.
