Factors Affecting Coriolis Flowmeters - VSL...Christopher Mills, Factors Affecting Coriolis Flowmeters, 2014v3.ppt Author John Lansing Created Date 20140326021934Z ...

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Factors Affecting Coriolis Flowmeters

Chris Mills, NEL!

Potentially ^

•! NEL

•! VISCOSITY / REYNOLDS NO

•! TEMPERATURE & PRESSURE

•! TWO PHASE OIL & GAS

•! CONCLUSIONS

!

CONTENTS

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NEL

Viscosity / Reynolds No

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Test Meters –!Used as research tools to identify influencing factors

Generic test meter descriptions: –!A: CORIOLIS Twin-tube ( 4" ) ; QMAX ~ 150 kg/s

Test Matrix –!5, 10, 20, ! , 90 l/s –!10, 20, 30 & 40 ºC –!Kerosene & Primol ( 2 – 300 cSt )

Coriolis Meters in Viscous Oil

Test Meter “A” (Coriolis)

-1.5

-1.0

-0.5

0.0

0.5

0 10 20 30 40 50 60 70 80

Mas

s Fl

owra

te E

rror

(%)

Reference Flowrate (kg/s)

Kerosene 10°C (3 cSt)Kerosene 20°C (2 cSt)Kerosene 30°C (2 cSt)Kerosene 40°C (2 cSt)

Coriolis Meters in Viscous Oil

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Test Meter “A” (Coriolis)

-1.5

-1.0

-0.5

0.0

0.5

0 10 20 30 40 50 60 70 80

Mas

s Fl

owra

te E

rror

(%)

Reference Flowrate (kg/s)

Kerosene 10°C (3 cSt)Kerosene 20°C (2 cSt)Kerosene 30°C (2 cSt)Kerosene 40°C (2 cSt)

Coriolis Meters in Viscous Oil

-1.5

-1.0

-0.5

0.0

0.5

0 10 20 30 40 50 60 70 80

Mas

s Fl

owra

te E

rror

(%)

Reference Flowrate (kg/s)

Primol 10°C (300 cSt)Primol 20°C (175 cSt)Primol 30°C (80 cSt)Primol 40°C (50 cSt)

Test Meter “A” (Coriolis)

Coriolis Meters in Viscous Oil

-1.50

-1.00

-0.50

0.00

0.50

100 1000 10000 100000 1000000

Mas

s Fl

owra

te E

rror

(%)

Pipe Reynolds Number

Kerosene 10°C (3 cSt)Kerosene 20°C (2 cSt)Kerosene 30°C (2 cSt)Kerosene 40°C (2 cSt)Primol 10°C (300 cSt)Primol 20°C (175 cSt)Primol 30°C (80 cSt)Primol 40°C (50 cSt)

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Test Meter “A” (Coriolis)

Coriolis Meters in Viscous Oil

-0.75

-0.50

-0.25

0.00

0.25

100 1000 10000 100000 1000000

Den

sity

Err

or (%

)

Pipe Reynolds Number

Kerosene 10°C (3 cSt)Kerosene 20°C (2 cSt)Kerosene 30°C (2 cSt)Kerosene 40°C (2 cSt)Primol 10°C (300 cSt)Primol 20°C (175 cSt)Primol 30°C (80 cSt)Primol 40°C (50 cSt)

Temperature & Pressure

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Joint Industry Project

Temperature & Pressure

Two Phase Oil & Gas

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Flow Regimes

Coriolis Two Phase Flow

Flow Regimes

Coriolis Two Phase Flow

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Coriolis Two Phase Flow

Programme: –! Assess effects of GVF on Coriolis

flowmeters –! Vertically installed –! Testing at 20 cP from 0 – 25 % GVF

(Two Phase Liquid & Gas Flow) –! Flow diagnostics

Test Meter “A” (Coriolis)

-1.00

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

0.60

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

Gravi Calibration

MM Calibration

Coriolis Two Phase Flow

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Test Meter “A” (Coriolis)

-45.00

-35.00

-25.00

-15.00

-5.00

5.00

15.00

25.00

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

< 1 % GVF

< 10 % GVF

< 25 % GVF

Coriolis Two Phase Flow

Test Meter “A” (Coriolis)

-45.00

-35.00

-25.00

-15.00

-5.00

5.00

15.00

25.00

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

0.1 % GVF

0.2 % GVF

0.5 % GVF

1 % GVF

2 % GVF

4 % GVF

6 % GVF

8 % GVF

10 % GVF

15 % GVF

20 % GVF

25 % GVF

Coriolis Two Phase Flow

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Test Meter “A” (Coriolis)

-45.00

-35.00

-25.00

-15.00

-5.00

5.00

15.00

25.00

0 5 10 15 20 25 30 35

Mas

s Fl

ow E

rror

, [%

]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

Test Meter “A” (Coriolis)

-30.00

-25.00

-20.00

-15.00

-10.00

-5.00

0.00

5.00

0 5 10 15 20 25 30

Mix

ture

Den

sity

Err

or, [

%]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

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Test Meter “B” (Coriolis)

-1.00

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

0.60

0.80

1.00

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

Gravi Calibration

MM Calibration

Coriolis Two Phase Flow

Test Meter “B” (Coriolis)

-25.00

-20.00

-15.00

-10.00

-5.00

0.00

5.00

10.00

15.00

20.00

25.00

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

< 1 % GVF

< 10 % GVF

< 25 % GVF

Coriolis Two Phase Flow

Mix

ture

Den

sity

Err

or, [

%]

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Test Meter “B” (Coriolis)

-25.00

-20.00

-15.00

-10.00

-5.00

0.00

5.00

10.00

15.00

20.00

25.00

0 5 10 15 20 25 30 35 40

Mas

s Fl

ow E

rror

, [%

]

Ref. Mass. Flow, [kg/s]

0.1 % GVF

0.2 % GVF

0.5 % GVF

1 % GVF

2 % GVF

4 % GVF

6 % GVF

8 % GVF

10 % GVF

15 % GVF

20 % GVF

25 % GVF

Coriolis Two Phase Flow

Test Meter “B” (Coriolis)

-25.00

-20.00

-15.00

-10.00

-5.00

0.00

5.00

10.00

15.00

20.00

25.00

0 5 10 15 20 25 30

Mas

s Fl

ow E

rror

, [%

]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

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Test Meter “B” (Coriolis)

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1.00

2.00

0 5 10 15 20 25 30

Mas

s Fl

ow E

rror

, [%

]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

Test Meter “Z” (Coriolis)

0.00

20.00

40.00

60.00

80.00

100.00

120.00

0 5 10 15 20 25 30

[

]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

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Test Meter “Z” (Coriolis)

80.00

81.00

82.00

83.00

84.00

85.00

86.00

87.00

0 5 10 15 20 25 30

Raw

Tub

e Fr

eque

ncy,

[H

z]

GVF, [%]

3 kg/s

5 kg/s

11 kg/s

18 kg/s

25 kg/s

35 kg/s

Coriolis Two Phase Flow

Test Meter “Z” (Coriolis)

80.00

81.00

82.00

83.00

84.00

85.00

86.00

87.00

0 5 10 15 20 25 30

Raw

Tub

e Fr

eque

ncy,

[H

z]

GVF, [%]

All Data

Linear (All Data)

Coriolis Two Phase Flow

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Test Meter “Z” (Coriolis)

-60.00

-50.00

-40.00

-30.00

-20.00

-10.00

0.00

10.00

20.00

0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00

Mas

s Fl

ow E

rror

[%

]

GVF [%]

Corrected Data

Coriolis Two Phase Flow

Conclusions

Key Findings: •! Viscosity / Re No

–!Under-reading evident

–! The performance of Coriolis devices by different manufacturers are not necessarily similar.

•! Temperature & Pressure –!Confidential due to JIP

•! Oil & Gas –! Large mis-measurement evident for both mass flow

and density at low velocities