coriolis two-phase meter · 2019-03-20 · concept study, test separator metering upgrade • gas...
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Coriolis two-phase meterØyvind Nesse NFOGM 22-03-2012
2012-03-14
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Agenda
• Project
• Allocation Metering Concept
• Coriolis Test Results
− Endress & Hauser
• Mass Flow
• Density
− MicroMotion
• Mass Flow
• Density
• Conclusions
2012-03-142
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The Svalin Field PL169 tie-in host Grane
PL028C
PL169
Grane Unit
M
C
PL028C
PL169
Grane Unit
M
C
In-place (MSm3) P90 Mean P10 Reserves (MSm3)
Svalin C 7.3 11.2 15.4 6.4
Svalin M north 6.4 11.9 17.3 6.9
2012-03-143
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Svalin M production profiles
01/1
4
01/1
6
01/1
8
01/20
01/2
2
01/2
4
01/26
01/28
01/30
0
50K
100K
150K
200K
250K
300K
Ga
s p
rod
uc
tio
n r
ate
(S
M3
/DA
Y)
0
500
1000
1500
2000
2500
3000
Wa
ter p
rod
uctio
n ra
te (S
M3
/DA
Y)
Gas production rateWater production rate
01/1
4
01/1
6
01/1
8
01/2
0
01/2
2
01/2
4
01/2
6
01/28
01/30
0
1000
2000
3000
4000
5000
Oil
pro
du
cti
on
ra
te (
SM
3/D
AY
)
0
2M
4M
6M
8M
10M
Oil p
rod
uc
tion
tota
l (SM
3)
Oil production rateOil production total
Field rate limitations (design rates) M structure
Oil (Sm3/sd) 5 000
Liquid (Sm3/sd) 5 000
Water (Sm3/sd) 3 000
Gas (Sm3/sd) 400 000
Lift gas (Sm3/sd) 250 000
2012-03-144
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Svalin Metering ConceptChallenge: GVF Oil Outlet < 1%
Test separator
Inlet separator
Multiphase meters
Svalin Subsea
Topside Grane
Metering
Metering
Metering
Gas
Gas
Oil
Oil
Water
Choke
Choke
CGas lift
M
Metering
Water
2012-03-145
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Deviations from ”Forskrift om måling av petroleum for fiskale formål og for beregning av CO2 –avgift”
• Simplified metering of oil
− NPD: “Salg og allokeringsmåling av olje ± 0,30% av standard volum ”
− Svalin specification: ± 5% of oil mass rate (multiphase meter)
• Justification
− 1st stage separator (test separator)
− Small field
− Cost Benefit Analysis (NPD §4):
• 8 MNOK may be invested for a 1% reduction in measurement uncertainty
for oil
2012-03-146
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Concept Study, Test Separator Metering upgrade• Gas
− Double Ultrasonic flow meters in parallel (two metering runs)
− Gas analyzer (double gas chromatograph)
− Redundant P&T
• Oil
− Automatic condensate sampler for daily/monthly samples, and water cut meter
− Double Coriolis flow meters in series for condition based
maintenance/calibration
− Master Coriolis flow meter on normally bypass (double block/bleed valves for
removal during operation)
− Redundant P&T
• Water ???
2012-03-147
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Amy Ross, NSFMW 2011 3’’ Coriolis Vertical Oil-Gas Flow
2012-03-148
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Fiscal metering test separator
2012-03-149
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Technology Qualification Program for Coriolis two-phase meter (Technology Readiness Level 4)
2012-03-1410
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Qualification Activity TRL 4
Qualification Activity (QA) Acceptance Criteria (AC)
Carry out horizontal flow tests of Coriolis 4” meters at a recognized laboratory.
Test matrix shall be based on Svalin design parameters.
Identify working range and flow conditions:• Absolute mass flow uncertainty < 2%
Test minimum two different Coriolis designs, i.e. two different vendors.
Verify and rank the performance of the meters
2012-03-1411
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Test matrix
Kinematic viscosity 14 cStTemperature 37 oCDensity 833 kg/m3
2012-03-1412
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NEL Oil Flow Test Facility (± 0.08% at k=2)Traceable to National Standards and is accredited to ISO 17025 by UKAS
PDCoriolis
2012-03-1413
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4’’ MicroMotion Coriolis Installed at NEL
2012-03-1414
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Baseline Calibration of 4’’ Endress & Hauser
2012-03-1415
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4’’ E & H: Two Phase Oil & Gas Tests Deviation in Mass Flow Error
2012-03-1416
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-5,00
-4,00
-3,00
-2,00
-1,00
0,00
1,00
2,00
3,00
4,00
5,00
0,00 10,00 20,00 30,00 40,00 50,00 60,00
Mas
s Fl
ow
Err
or
[%]
Ref. Mass Flow [kg/s]
4'' E & H Coriolis, s/n: 980B5302000, Jan 2012 Mass Flow Error
0.0% GVF
0.5% GVF
1.0% GVF
1.5% GVF
4’’ E & H: Two Phase Oil & Gas TestsDeviation in Mass Flow Error
2012-03-1417
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4’’ E & H: Two Phase Oil & Gas TestsDeviation in Mass Flow Error
2012-03-1418
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4’’ E & H: Two Phase Oil & Gas TestsMixture Density Error
2012-03-1419
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4’’ E & H: Two Phase Oil & Gas TestsMixture Density Error
2012-03-1420
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Baseline Calibration of 4’’ MicroMotion
2012-03-1421
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4’’ MicroMotion: Two Phase Oil & Gas TestsDeviation in Mass Flow Error
2012-03-1422
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-5,00
-4,00
-3,00
-2,00
-1,00
0,00
1,00
2,00
3,00
4,00
5,00
0,00 10,00 20,00 30,00 40,00 50,00 60,00
Ma
ss F
low
Err
or
[%]
Ref. Mass Flow [kg/s]
4'' MicroMotion Coriolis, s/n: 11035721, Jan 2012 Mass Flow Error
0.0% GVF
0.5% GVF
1.0% GVF
1.5% GVF
3.0% GVF
4’’ MicroMotion: Two Phase Oil & Gas TestsDeviation in Mass Flow Error
2012-03-1423
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4’’ MicroMotion: Two Phase Oil & Gas TestsDeviation in Mass Flow Error
2012-03-1424
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4’’ MicroMotion: Two Phase Oil & Gas TestsMixture Density Error
2012-03-1425
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4’’ MicroMotion: Two Phase Oil & Gas TestsMixture Density Error
2012-03-1426
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Conclusions• New application or product
− Test flow meter at intended environment !!!!
• A robust two-phase flow meter has yet to be found/developed.
• Coriolis:
− The presence of small levels of gas results in significant mis-measurement of
the oil flow.
− At low GVF the mass flow respons improved sligthly with increased oil flow.
− The under-reading of the mass flow and density increases with increasing
GVF (over-reading at low GVF may occur)
• MicroMotion over-reading of 142% at 0.5% GVF at 6kg/s.
• E&H under-reading of 50% at 4% GVF at 50kg/s.
• Simplified metering is a challenge !
2012-03-1427
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Presentation title
Presenters namePresenters titleE-mail address ……@statoil.comTel: +4700000000
www.statoil.com
2012-03-1428