3 Phase Well Test Separator0 pages

BAGGI BA-3PS
3 Phase Well Test Separator
The SensEvolution BAGGI BA-3PS is a skid mounted horizontal 3 Phase Well Test Separator, equipped
with all the necessary valves, measurement
devices and an embedded computer. The skid is
easily truck transportable.
The flow rates of gas and oil are measured by
Coriolis meters, while the Water flow rate is
measured by an electromagnetic meter. The total
level of the fluid and the level of the water/oil
interface are measured by 2 radar transmitters.
The signals, from all the above sensors and from
any additional sensor required by the application,
are collected by the embedded computer. This one,
besides displaying the actual readings on the LCD screen, is able to archive the historical data in Excel
compatible format, to show the measurement trends in graphical format and to generate alarms when
out-of-range values occur. Finally, the computer can transmit remotely the measurements and the alarms
by means of 4...20 mA analogue outputs and digital (relay) outputs. A Modbus serial port is available. In
short the computer, together with its circuitry, acts as a PLC to operate the skid during normal operation,
start-up, shut-down and emergency.
The typical configuration of the 3 phase separator is depicted in the figure below:

The stream enters the separator from the inlet nozzle on the top (with an interception manual ball valve).
Gas is separated from liquid by gravity and by means of a demister on the gas outlet nozzle, on the top.
The gas outlet line is equipped with a Coriolis meter and a pressure regulating valve, for keeping the
separator’s pressure at the desired set point.
Liquid is accumulated in the lower part of the vessel and water is separated from hydrocarbons by a weir
that is adjustable in height. Level in the two compartments is indicated by the level indicators/transmitters
that are used to operate the control valves placed in the liquid outlets, at the bottom. One of them
measures the total level of the fluid, the other one measures the level of the interface. The weir height
can be regulated by a pneumatic actuator.
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B.A.G.G.I . SrL – V.le Campania,29 20133 Milano Italy – Tel. +39 02715547 – Fax +39 027490571 – baggi@baggi.com