FLOWATCH to Ensure Accurate Measurement in Any Environment

The Pietro Fiorentini’s FLOWATCH is non-intrusive, non radioactive in-line multiphase meter for measuring flow rates of oil, water and gas from a well stream or in a pipeline.

The FLOWATCH meters are used for the following purposes:
Individual well monitoring offshore and onshore.
Offshore well testing.
Onshore well testing.
Allocation metering.
Mobile well testing.

The meter’s operation is based on well-established measurement principles, such as Venturi, capacitance/conductance, and cross-correlation. The major parts of the FLOWATCH meter are the Venturi insert and the electrodes incorporated inside the throat of the Venturi insert. The flow rates of oil, water and gas are calculated based on the measurements obtained by the electrodes and the measurement of the differential pressure across the Venturi inlet. No separating devices, mixers, by-pass lines or radioactive sources are used. The velocity is found from cross-correlating the high resolution time signals from pairs of electrodes within the Venturi insert. The density is determined indirectly, through the well known momentum equation (“Venturi equation”).

The key features of FLOWATCH meters:
Non radioactive: The meters are environmentally friendly and safe to operate.
Compact design: Space and weight have been reduced; the meters have small footprint and there are no requirements for upstream and downstream straight pipe length.

Easy to install and operate: The meters are vertically installed; there is no special requirement for upstream pipe geometry. Calibration is done at the factory. Calibration at site is not required. Pressure losses are low.
Low maintenance: Standard maintenance is required for differential pressure, pressure and temperature transmitters.

Field tested: The device has been field tested and installed by major oil and service companies worldwide.
High reliability: Its components are robust and reliable.
High rangeability: The device covers wide operating range, all flow regimes. It has low sensitivity to variation in oil properties and is not affected by presence of H2S or CO2.

High flexibility: The meter can be used for onshore and offshore applications, such as individual well monitoring, well testing, allocation metering, and mobile well testing.
The key components are:
Metering Section including DPT, PT and TT transmitters;
Sensor Electronics (Mounted in field enclosure on Metering Section);
Flow Computer;
Human Machine Interface.

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