2015 ARKH-P7 Artic P

Ocean Circulation

Surface Current of the Barents Sea	Sea-Surface Temperature (°C)

Mercator model – 01 feb 2006

Logistics

Ice Breakers and Ice Class tankers

 Significant cost impact

Evacuation in ice

AGENDA

1 Geography and geopolitic

2 Existing facilities

3 Some technical challenges:

A Ice and Icebergs

B Winterization

C Arctic Codes

D HSE

4 Shtockman

Icing

IN ARCTIC OFFSHORE

THE MAIN DIFFERENCE IS ICE

Ice can impose large lateral loads on a platform and is a threat to global stability

Ice creates high local pressures and can rupture the outer skin of a structure or vessel

Ice can create sea floor gouges and affect pipeline integrity

Ice can impede access by vessel and tanker

DEALING WITH ICE

Avoid it ! - summer drilling, seasonal production, disconnect for bad ice…

Fight it ! - ice resistant fixed platforms, ice breaking tankers, ice management

Use it ! - ice roads, construction from the ice

Structures

Designed to resist Ice Interaction Scenarios

Ice Forces (vibrations)

Ice Encroachment

Topsides for extreme temperatures

Oil spill containment

Pipelines and Subsea

Buried to resist ice scours

Typical depths 1-3 metres

 Deeper for icebergs

Iceberg management plan

Consists of

Iceberg detection using aerial means

Iceberg tracking and forecasting

Iceberg deflection with tug(s)

Offshore Canada

15 000 icebergs have been deflected or towed

55 icebergs weight more than 3 millions tons

Iceberg management: Canadian experiences

Two concepts in iceberg infested waters

Iceberg resisting GBS

Hibernia

Start of production in 1997

Disconnectable FPSOs

Terra Nova, first oil in 2002

White Rose, first oil in 2005

Thanks to an efficient iceberg management plan, none of these platforms have been impacted by an iceberg nor had to disconnect since start of production.