André Boer

M-PHASE 5000Magnetic Resonance Multiphase Flowmeter

Title here again in Arial 24 max. one lineAgendaM-PHASE 5000agenda

1. Introduction

2. Magnetic Resonance

3. Multiphase Flow Measurement

4. Application

5. Summary and Outlook

Magnetic Resonance Multiphase FlowmeterFor all Molecules containing Hydrogen

M-PHASE 5000

• Single measurement principle without any nuclear source• Full inline fluid characterisation• Large dynamic range up to 1:60, full bore design• Enables detection of multiple components in multiple

phases

4NFOGM handbook of MPFM

Multiphase Flow

5NFOGM handbook of MPFM

Multiphase Flow

6

� Complex flow, several different flow regimes

� Heavy unsteady flow conditions

� In addition to GVF also WLR variation

Stratified Flow

Multiphase flowloop at KROHNE development lab

7NFOGM handbook of MPFM

Multiphase Flow

8

� Complex flow, several different flow regimes

� Heavy unsteady flow conditions

� In addition to GVF also WLR variation

Plug Flow

Multiphase flowloop at KROHNE development lab

9NFOGM handbook of MPFM

Multiphase Flow

10

� Complex flow, several different flow regimes

� Heavy unsteady flow conditions

� In addition to GVF also WLR variation

Slug Flow

Multiphase flowloop at KROHNE development lab

Title here again in Arial 24 max. one lineAgendaM-PHASE 5000agenda

1. Introduction

2. Magnetic Resonance

3. Multiphase Flow Measurement

4. Application

5. Summary and Outlook

� Magnetic Resonance is a phenomenon which allows for the measurement of hydrogen

atoms, when placed in a magnetic field and stimulated with a Radio Frequency pulse

� Oil, gas and water contain

hydrogen atoms (H)

� Hydrogen atoms consist of a

nucleus (proton) and electron (e-)

� The proton has spin, resulting

in a small magnetic moment

� In combination with an external

magnetic field, and RF pulses,

these hydrogen atoms can be

manipulated

12

Magnetic Resonanceprinciple

13

Magnetic Resonanceprinciple

� When placing a hydrogen atom in a magnetic field and stimulating it with a Radio

Frequency pulse, allows measuring of MR signals from the hydrogen atom.

• Random oriented hydrogen atoms

• Alignment to magnetic field

• Precession of atoms

• Stimulation with RF pulse

• Detection of echo signal

Title here again in Arial 24 max. one lineAgendaM-PHASE 5000agenda

1. Introduction

2. Magnetic Resonance

3. Multiphase Flow Measurement

4. Application

5. Summary and Outlook

15

Magnetic Resonanceflow velocity measurement

Measurement of the decay of the MR signal, as fluid is flowing out of the measurement section

16

Magnetic Resonancefluid fraction measurement

From the amplitude of the signal the fluid fraction is derived

17

Magnetic Resonancegas fraction measurement

Signal100% liquid

liquid

18

Magnetic Resonancegas fraction measurement

The ‘missing’ signal corresponds to the gas fraction

Signal100% liquid

Signalliquid,actualwater

oil

gas

19

Magnetic Resonanceoil & water measurement

• Only main magnet switched on

• Oil magnetizes fast

• Water magnetizes very slowly

• Oil reacts to the RF pulses

• Signal of oil is detected

oil

water

20

Magnetic Resonanceoil & water measurement

• All magnets switched on

• Oil magnetizes fast

• Water magnetizes very slowly

• Both oil and water

• are magnetized

• react to the RF pulses

• Signal of oil and water is detected

oil

water

21

Magnetic Resonanceoil & water measurement

Main magnet on �

oil measurement

All magnets on �

oil and water measurement

• Using the signal amplitude the liquid fraction is determined• From the ratio between the measured signals, the oil and

water fractions can be determined

22

Magnetic Resonancegas velocity measurement

Gas

Oil

Water

High velocityLow amplitude

Low velocityHigh amplitude

One measurement principle:

Magnetic Resonance

Four ‘steps’:

1. Convective decay � liquid velocity

2. Magnet length � oil-water ratio

3. Amplitude of signal � liquid and gas fraction

4. Imaging / slicing � gas velocity

23

Magnetic ResonanceSummary of flow measurement

Gas

Oil

Water

24

Magnetic ResonanceSummary of flow measurement

� liquid velocity

� oil-water ratio

� liquid and gas fraction

� gas velocity

The fraction of oil, gas and water is knownThe velocity of oil, gas and water is known

Q water

Q oil

Q gas

Volumetric flow rate

water

oil

gas

Fraction

The volumetric flowrate of oil, gas and water can be determined

• Valid for any multiphase mixture, containing hydrogen based molecules

Title here again in Arial 24 max. one lineAgendaM-PHASE 5000agenda

1. Introduction

2. Magnetic Resonance

3. Multiphase Flow Measurement

4. Application

5. Summary and Outlook

The multiphase flow meter co-developed by Krohne and Shell

and deployed at NAM Rotterdam

Applicationoil and gas production; enabling enhanced reservoir management

The multiphase flow meter co-developed by Krohne and Shell and

deployed at NAM Rotterdam

Applicationoil and gas production; enabling enhanced reservoir management

The multiphase flow meter co-developed by Krohne and Shell and

deployed at NAM Rotterdam

Applicationoil and gas production; enabling enhanced reservoir management

Title here again in Arial 24 max. one lineAgendaM-PHASE 5000agenda

1. Introduction

2. Magnetic Resonance

3. Multiphase Flow Measurement

4. Application

5. Summary and Outlook

�Magnetic Resonance is now used for measuring multiphase

flow

� Large dynamic range, no radioactive source, full bore design

�First application area is oil and gas industry

�Chemical industry can also benefit from MR

�Multiphase flow measurement of hydrogen based molecules

�Detection of individual components in multiple phases

�Tomographic information over total cross section

Summary and Outlook

Gas

Oil

Water

Thank you for your attention!