IFEA Subsea Kraftforsyning elektro 25. mai 2011 Høyspente ... · PDF file• The Subsea HV Connector business is demanding. Thus skilled, trained and experienced experts are required

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

[email protected]

Eyvind Lyches vei 10

N-1338 Sandvika

NORWAY