A multiphase flow meter (MPFM), also used as a well testing meter, supports well testing, production allocation and continuous well monitoring.

The range runs from the Flowatch 3i and Flowatch HS to the Totem and the Xtreme S wet gas meter, plus the WLR Meter for water cut, in 0.5 to 14 inch, all rated to 345 bar. Pietro Fiorentini supplies them for oil and gas production in Saudi Arabia and the GCC: the UAE, Qatar, Kuwait, Bahrain and Oman.

Multi-phase measurement devices are in-line systems that provide real-time measurements of oil, water and gas flow rates. These inline systems enable accurate flow measurement without requiring large phase-separation infrastructure, delivering real-time operational data for oil and natural gas production facilities including floating units, offshore wellheads, and topside operations.

Multiphase Flow Meters (MPFM): products

Flowatch 3i non-radioactive multiphase flow meter for wellhead well testing by Pietro Fiorentini Non-Radioactive
Multiphase Flow Meter

Flowatch 3i

Multiphase flow meter for well testing and continuous monitoring. Non-radioactive design with 15+ years of field-proven technology.

  • Water Cut: 0-100%
  • GVF: 0-92%
  • Pressure: up to 345 bar
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Flowatch HS multiphase flow meter with high-speed gamma densitometer for well testing by Pietro Fiorentini High Speed
Multiphase Flow Meter

Flowatch HS

High-speed multiphase flow meter for continuous well output monitoring with high accuracy performance levels.

  • Water Cut: 0-100%
  • GVF: 0-98%
  • Pressure: up to 345 bar
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Totem non-radioactive multiphase flow meter, Venturi plus microwave WLR, by Pietro Fiorentini All Flow Regimes
Multiphase Flow Meter

Totem

Modular, non-intrusive, non-radioactive inline system for oil, water, and gas flow measurement across all flow regimes.

  • Water Cut: 0-100%
  • GVF: 0-100%
  • Sizes: 2" to 14"
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WLR meter: microwave water cut (water liquid ratio) meter for multiphase wellhead streams by Pietro Fiorentini Microwave Tech
Water Content Meter

WLR Meter

Specialized device for real-time water content measurement in multiphase flow using microwave resonator technology.

  • WLR: 0-100%
  • GVF: 0-100%
  • Pressure: up to 345 bar
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Xtreme S non-radioactive wet gas flow meter for gas streams with Lockhart-Martinelli below 0.3 by Pietro Fiorentini Wetgas
Wetgas Flow Meter

Xtreme S

Dedicated wetgas metering solution. Modular, non-intrusive, non-radioactive inline system for wetgas conditions.

  • WLR: 0-100%
  • GVF: 90-100%
  • Sizes: 2" to 14"
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Key Benefits

Real-Time Measurement

Continuous monitoring of oil, water, and gas flow rates

Non-Intrusive Design

No separation or moving parts required

Non-Radioactive Options

Flowatch 3i, Totem, WLR Meter and Xtreme S use no radioactive source

Versatile Applications

Floating units, offshore & topside

How to choose a multiphase flow meter

Start with the gas volume fraction (GVF) of the wells, then decide whether a radioactive source is acceptable.

  • Gas volume fraction (GVF)

    The Flowatch 3i covers 0 to 92 percent GVF, the Flowatch HS 0 to 98 percent and the Totem the full 0 to 100 percent; all measure water cut from 0 to 100 percent.

  • Wet gas wells: Xtreme S

    For wet gas wells at 90 to 100 percent GVF, with a Lockhart-Martinelli parameter below 0.3, the Xtreme S is the dedicated choice.

  • Higher accuracy: Flowatch HS

    The Flowatch HS uses a Cs-137 gamma source in its patented fast gamma densitometer to reach higher accuracy; for example, its water cut uncertainty is 2 percent at 0 to 60 percent GVF.

  • Size and materials

    The Flowatch 3i starts at 0.5 inch and the Flowatch HS at 1.3 inch; the Totem, Xtreme S and WLR Meter run 2 to 14 inch, with bodies in AISI 316, duplex or Inconel 625.

  • NACE and electronics

    The Totem, Xtreme S and WLR Meter list NACE MR0175/ISO 15156; electronics carry ATEX/IECEx Ex d certification and use Modbus over RS-485/422 or Ethernet.

  • Water cut only: WLR Meter

    If you only need water content, the WLR Meter measures water liquid ratio with a microwave resonator, stand-alone or built into a multiphase meter; Totem, Xtreme S and WLR Meter suit mobile well testing units.

  • What to send us

    Our Al Khobar team can review well data for fields in Saudi Arabia, Oman or Kuwait and propose a configuration.

The Flowatch 3i, Totem and Xtreme S use no radioactive source, which avoids documentation, importation and handling issues; these three can be upgraded to a radioactive type later.

Frequently asked questions

What is the difference between a multiphase flow meter and a test separator?

A test separator splits the well stream into oil, water and gas in a vessel and meters each phase on its own. A multiphase flow meter measures the three phases in line and in real time, without separation. The Flowatch meters add a pressure drop below 1 bar and suit topside wellheads, offshore wellheads and floating units.

Why choose a multiphase flow meter without a radioactive source?

A meter with no radioactive source avoids the documentation, importation and handling issues that come with radioactive material, which simplifies shipping and site work. The Flowatch 3i, Totem and Xtreme S work this way. The Flowatch HS does use a Cs-137 source to reach higher accuracy, so the choice balances accuracy needs against source handling.

What do GVF and water cut mean for a multiphase meter?

Gas volume fraction (GVF) is the share of gas in the total flow volume at line conditions. Water cut, also called water liquid ratio (WLR), is the share of water in the liquid phase. A well at 95 percent GVF and 30 percent water cut is mostly gas, and 30 percent of its liquid is water. Each meter states the GVF and water cut range it covers.

Which meter suits a wet gas well?

Use the Xtreme S. It is a dedicated wet gas meter for 90 to 100 percent GVF and Lockhart-Martinelli values below 0.3. It combines a Venturi, a velocity meter and a microwave WLR sensor, with a typical gas rate uncertainty of 4 percent relative. For wells below 90 percent GVF, the Totem covers the full 0 to 100 percent range.

Need Help Selecting the Right MPFM Solution?

Our technical team can help you choose the optimal multiphase flow metering system for your application requirements.