factors affecting coriolis flowmeters - vsl...christopher mills, factors affecting coriolis...
TRANSCRIPT
3/25/14
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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