Embed Size (px)
Citation preview
DNV GL © 2017 SAFER, SMARTER, GREENERDNV GL © 2016
OIL & GAS
Balancing Cost and Risk in Metering - Technology Qualification of Flow Systems to control fieldrobustness of flow solutions
1
Kuwait Measurement Conference - November 2017
Henk Riezebos, Ronald ten Cate
DNV GL © 2017
Fiscal & Allocation Metering Policy Sales Metering = Cash register = Financial Value €€
Upstream Midstream Downstream
Shippers
Storages
Power Plants
Factories
Distribution
Export/Transit
Allocation Fiscal
2
DNV GL © 2017
Why Metering Management / ISO10012?
Metering Management is balancing conflicting drivers towards optimum!
3
DNV GL © 2017
DNV GL’s approach for Benchmarking a metering organization by performing a gap analysis
4
Metering policy (S2)
4
3
2
1
Metering
Design (T1 )
Metrological
Confirmation (T2)
Uncertainty
Calculations
and Parameter
handling (T3)
Metering Systems
(S1)
Resources
(S1)
Transparency
Accountability
(S1)
UFG control
system (S2)
Non-conformity
management
(S2)
1
2
3
4
56
7
8
9
0
DNV GL metering team scores the organization’s metering management processes
on a 5-point scale and across 9 different areas.
DNV GL © 2017
Fiscal Metering (Type I) Classes and Sizes
ACCURACY CLASS
Size
I-AAA
UE<0.6%
I-AA
UE<0.8%
I-A
UE<1.0%
I-B+
UE<1.5%
MID
1
>100M€ per year
Large border station
Gas production plant
Recommended
Classification
Level
2
10-100 M€ per year
Small border station
Large industrial
Recommended
Classification
Level
3
1-10 M€ per year
Industrial, city gate
Recommended
Classification
Level
4
0.1-1 M€ per year
Small industrial, city gate
Recommended
Classification
Level
COST TOO HIGH
RISKTOO HIGH
5
DNV GL © 2017
DNV GL ClassificationAllocation Metering (type II) Accuracy Classes and Station Sizes
Applications in wet gas GVF > 95%
ACCURACY CLASS
Size
II-AAA
UE<2%
II-AA
UE<3.5%
II-A
UE<5%
II-B+
UE<10%
Unspecified
1
Asset value
>5000 M€
Large Gas field
Recommended
Classification
Level
2
Asset value
500-5000 M€
Medium Gas field
Recommended
Classification
Level
3
Asset value
<500 M€
Small gas field
Recommended
Classification
Level
RISKTOO HIGH
COST TOO HIGH
6
DNV GL © 2017
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
Vo
rte
x
Ori
fic
e
Co
rio
lis
Ult
ras
on
ic
Tu
rbin
e
US
M/T
urb
Uncertainty
Operational Measurement Uncertainty
Best Technology Value for flow technologies @ Natural Gas (60 bar)
DNV GL © 2017
Technology Qualification of Metering systems
Financial risk mitigation: Proving whether technologies are fit-for-purpose and field robust
8
DNV GL © 2017
The roles in Qualification of New Developments
Yes, we can!
Look at all the great work we
have done!
Convince me,prove it
Wow, but is it relevant and
complete?
Product Developer End-user
What is the residual risk?
DNV GL © 2017
Technology Qualification Testing for Metering concepts
Reference:
FISCAL ability to meet DNV GL accuracy class I (fiscal) requirements on
the basis of operational flow uncertainty UQ
Level I-AAA UQ < 0.3% only achieved with double flow systems (USM, TM)
Level I-AA UQ < 0.5% flow systems with periodic flow proving (or dual USM?)
Level I-A UQ < 0.7% single flow systems ok (USM, TM, Coriolis)
Level I-B UQ < 1%
SALES ALLOCATION ability to meet DNV GL accuracy class II
requirements
Level II-AAA UQ < 2% Note 1: uncertainty after allocation process
Level II-AA UQ < 3% Note 2: in general wet gas correction necessary
Level II-A UQ < 5%
Level II-B UQ < 8%
DNV GL © 2017
Technology Qualification Testing for Metering concepts
Advantages of using the DNV-GL TQ scheme
1. Current metering and metrology standards {e.g. OIML R137 or
EN1776} are broad and not discriminative enough to ensure best
industry practices, needed for high-end systems is implemented.
2. Moreover, the schemes do not provide evidence for FIELD
robustness. DNV GL scheme includes operational metrological
effects, that do occur in real-life applications (effects of drift, dust,
liquids, build-up, pulsations, etc.).
DNV GL © 2017
Design Calibration installation Field Operation
Opera
tional Syste
m U
ncert
ain
ty
USM life cycle stages
Operation
Installation
Calibration
Design
Total incorporated measurement uncertainty during lifecycle phases of Ultrasonic Flow Meter system
uncontrolled
AGA – 9
ISO 17089
TCC / CEESI
DNVGL
FORCE
OIML 137:
Class 1.0
Class 0.5
DNV-GL
TECHNOLOGY
QUALIFICATION
(TQ)
Out of the box
?
DNV GL © 2017
Design Calibration installation Field Operation
Opera
tional Syste
m U
ncert
ain
ty
USM life cycle stages
Operation
Installation
Calibration
Design
Total incorporated measurement uncertainty during lifecycle phases of Ultrasonic Flow Meter system
AGA – 9
ISO 17089
TCC / CEESI
DNVGL
FORCE
OIML 137:
Class 1.0
Class 0.5
DNV-GL
TECHNOLOGY
QUALIFICATION
(TQ)
uncontrolled
DNVGL
Qualified
Level I-AA
Class 0.5%
Out of the box
DNV GL © 2017
FIELD ROBUSTNESS: Analysis of real life operational metrological distortions
To define test matrix and properly support and market
this case (based on 30+ years of experience):
Meter related 25%
Process related 75%
Process related metering errors can be due to
Process Conditions beyond design
Presence of dust and Liquids
Buildup of dirt on piping
Flow conditioner blockage
Dynamic flow processes (pulsations)
Noise e.g. valves
Typical distribution of Real life
process related distortions
Blockage Buildup
Liquid Valve noise
Pulsations Beyond design
DNV GL © 2017
DNV GL Multiphase test flow loop
Technology Qualification tests wet gas
Ultrasonic meter
for TQ test
Looking glass
DNV GL © 2017
Summary of DNV GL Technology Qualification of Pay-Check Ultrasonic Flow Meter system
Comparison of Pay and Check and Effect on Distortions
Flo
w
Error
Pay meter
Check meter
DNV GL © 2017
Significance of DNV GL Technology Qualification for Fiscal Metering
Benchmarking by an independent party to verify flow
technology mitigates risks
Ensuring reliability by verifying operation at varying
levels of measurement error and by confirming
diagnostic and detection ability to determine
measurement risk levels
Optimizing production by focusing on real-life
metrological distortions
Applying Technology Qualification scheme ensures
necessary evidence to verify field robustness
Helping the industry determine potential cost savings
by using dual-configuration meters
Emerson Daniel is first launching customer for DNV GL
TQ; method available for all technologies and market
players
Proving Field Robustness of Flow Metering Systems
DNV GL © 2017
SAFER, SMARTER, GREENER
www.dnvgl.com
Contact
18
Energieweg 17, 9743 AN Groningen
P.O. Box 2029, 9704 CA Groningen
The Netherlands
www.dnvgl.com
Ronald ten Cate, MScHead of Section Flow Testing & Calibration
Tel: +31 50 700 9713
Energieweg 17, 9743 AN Groningen
P.O. Box 2029, 9704 CA Groningen
The Netherlands
www.dnvgl.com
Henk Riezebos, PhDSr. Principal Consultant Flow & Flow
Acoustics, Gas System Management
Tel: +31 50 700 9748
![OIML R 49-1 (E) 2006 - ZEN SERVIS International recommendation OIML R...OIML D 11 ]. OIML R 49-1: 2006 (E) 7 2.2.10 Significant fault Fault, the magnitude of which is greater than](https://img.pdfslide.us/doc/110x75/5add5cf97f8b9a9d4d8d12e1/oiml-r-49-1-e-2006-zen-international-recommendation-oiml-roiml-d-11-oiml.jpg)
