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1GE Oil & Gas
May 2011
IFEA Subsea Kraftforsyning –elektro25. mai 2011
Høyspente Konnektorer
Kristin Moe Elgsaas
Boosting Separation Compression Power
2GE Oil & Gas
May 2011
• Definisjoner &
prinsipper
• Produkter & prosjekter
• Utfordringer
• Muligheter
Høyspente Konnektorer
Benefits of EOR:
• Increased recovery rates
• Increased total recovery
• Increased efficiency of recovery
Subsea HV Connectors are critical success factors for EOR
4GE Oil & Gas
May 2011
Terminology to be used in this presentation
umbilicalUTA Transformer
Motor
Penetrators are equipment bushings – with or withouth differential
pressure
Dry Mate Connectors are intended for connection in dry/controlled
environments
Wet Mate Connectors are intended for subsea connection
Definition: Voltage rating U0/U(Um): 18/30 (36) [kV] (IEC 60183)
5GE Title or job number
5/30/2011
Two concepts are currently available for Wet Mate Connectors
Solid insulation
Power Conductor
Rubber bellows
Unmated Mated
Water=Ground
Dielectric Oil
I) Conventional stab type connector with exposed contact pins
Source: Deutsch Offshore
Source: Expro
6GE Title or job number
5/30/2011
Two concepts are currently available for Wet Mate Connectors, con’t
Mechanically
ConnectedElectrically
Mated
Solid insulation
Power Conductor
Flushed and
cleaned
dielectric oil
Dielectric Oil
No water
insideWater=Ground
II) Clean Environmental type Connectors (MECON)
7GE Oil & Gas
May 2011
List of subsea connectors
8GE Oil & Gas
May 2011
Currently available maximum* ratings
36kV,
900A
145kV,
700A
12kV,
1800A
12kV,
1800A
*Ratings are
maximized with
regard to voltage on
the primary side of
the transformer, and
with regard to current
on the secondary
side of the
transformer
9GE Title or job number
5/30/2011
AC Power for Subsea Pumping and CompressionTrends: Deeper Waters, longer off sets, multiple and increased loads
1. Topside VSD
- Troll Pilot: 1,5 MW pump, 6kV, 3,6km
2. Topside VSD and Subsea Power
Transformer- Tyrihans: 2,7 MW pumps, 22 kV, 31 km
- Åsgard: 9 MW compressor, 45 kV, 48 km
- Jack/St. Malo: 2,5 MW pumps, 22kV, 2200 mWD
3. Subsea T&D System (Transformer,
Switchgear and VSD- Ormen Lange: 58 MW, 120 kV, 120 km
10GE Oil & Gas
May 2011
Need for subsea HV power connectors
5 WM
24
DM
15 P
11GE Oil & Gas
May 2011
Some considerations...
• Subsea HV Connectors are HV electric components placed in extreme environments (sea water, process gas)
• Operation down to 3000m water depth (testing up to 450 bar)
• Subsea Connections in the presence of sand and silt
• Operation with high differential pressures and potentially rapid decompression
• Operating temp range from -5 to 20 degree C
• Storage temp range from -25 to 60 degree C
• 25 years design life – no maintenance
Multi-skilled and experienced experts are required to
successfully develop Subsea HV Connectors
12GE Oil & Gas
May 2011
There is no industry standard for design and testing of Subsea HV Connectors
• A great number of standards are partially and/or potentially relevant
• Lack of standardization could cause costly over-qualification (or under-qualification)
• No clear requirements promote project/customer specific requirements
• Statoil TD 0153 is however widely used
Electrical
Properties,
PD
Hyperbaric Thermal Thermal
chockVibration Impact
13GE Oil & Gas
May 2011
Slow technology uptake in the industry is a challenge
• It takes on average 16 years from concept to widespread
commercial adoption in the oil & gas industry
• Operational experience is key to «entry»
• Limited number of projects that require HV subsea power
(so far)
Troll Pilot – contract award
1997 (start-up 2001)Source: McKinsey
14GE Oil & Gas
May 2011
Example - MECON WM development
Start-up: 2001
Contract award: 1997
Qualified 2006
Qual
2011
Ongoin
g
TIMELINE
D
E
V
E
L
O
P
M
E
N
T
15GE Title or job number
5/30/2011
System Power, max[kW]
Voltage[kV]
Current [A] Frequency [Hz]
Control system(incl. All electric)
15 1,2 – 7,2 10 162/3 - 60
Small pump 1 000 3,6 – 12 100 0 - 60
Large pump 5 000 7,2 – 12 500 0 - 200
Compressor 15 000 7,2 - 12 1900 0 - 400
Transmission & Distribution
2 500 – 70 000
12 - 145 200 - 2000 162/3/50/60
Power ratings for Subsea power products
0
500
1000
1500
2000
0 3 6 9 12 15 18 21 24 27 30 33 36 39Control
200 -
Cu
rre
nt
[A
]
7,2 145
-
Voltage [kV]
Power range, Z-chart – WM
Power T&DCompressor
Pump
Environmentally clean type connector
Conventional stab type connector
Control0
500
1000
1500
2000
0 3 6 9 12 15 18 21 24 27 30 33 36 39
200 -
Cu
rre
nt
[A
]
7,2 145
-
Voltage [kV]
Power range, Z-chart – penetrators & DM
Power T&DCompressor
Pump
18GE Oil & Gas
May 2011
Synergies with Offshore/Marine renewable energy production
Offshore Wind, Wave and Tidal turbines;
- Similarities on power technology and subsea
power products
- Some of the same companies (Oil & Gas)
involved
- Larger volume, shallow water
- Cost reduction will be a critical success factor for
Subsea HV Connectors in the renewables sector
19GE Oil & Gas
May 2011
= Åsgard
= Ormen Lange
= Tyrihans
= King
Looking further ahead, alternatives to conventional
AC systems might stake out the course for further HV
Subsea Connector developments
Power
[MVA]
Summary
This is GE Innovation Now
• Subsea HV Connectors will be an integral part of and a critical success factor for future oil and gas development
• There are synergies with the emerging offshore renewables energy sector
• The Subsea HV Connector business is demanding. Thus skilled, trained and experienced experts are required to provide reliable solutions.
• Qualification efforts are currently focusing on enabling subsea power AC distribution systems. This could change in the future
21GE Oil & Gas
May 2011
Thank You For Listening !
For further information please contact:
Kristin Moe Elgsaas
Subsea Power
GE Oil & Gas
T: +47 66 98 54 11
M: +47 41 68 73 80
Eyvind Lyches vei 10
N-1338 Sandvika
NORWAY
