Clair Characteristics
Location
75 km west of Shetland Islands
Block Number
206/7, 206/8, 206/9, 206/12, 206/15
Water depth
130m
Size of field
220 km2
Number of platforms
1 - fixed jacket and topsides
Discovered
1977
Development consent
2001
Start-up
4Q 2004
Peak Production
70,000 Stbd oil
Plateau production
60,000 Stbd oil
Accommodation
Max 120 personnel on board (POB)
Participants
BP, ConocoPhillips, ChevronTexaco, Enterprise, Amerada Hess
Development cost
Phase 1 - 641 million pounds
Reservoir extent
220 sq km
Maximum thickness
600m
Depth below sea level
1500m
Reservoir depth (2003)
1820m
Reservoir pressure (2003)
2776 psi
Reservoir Temperature (2003)
157 F
Oil Gravity
15-35 API; compositionally graded
Gas/Oil Ratio
variable (200-400 scf/stb)
Platform statistics
Jacket weight and where built
c. 9000 tonnes, Aker Verdal, Norway
Topside weight and where built
Total (dry weights)
Drilling decks
12,400 tonnes (including in Accommodation Module)
Split
Deck: 11,200 tonnes, Amec
Accommodation: 1,000 tonnes, LMT, Norway
Flare Boom: 200 tonnes, Amec
Weight of drilling modules (excluding lifting slings)
Drilling equipment set
1,995 tonnes
Drilling support module
2,416 tonnes
Number of deck levels
3 (Main, Production, Cellar) & Mezzanine Decks
Oil export pipeline
22 NB, 150 Barg Design Pressure - Bredero Shaw Leith
Gas export pipeline
6 NB, 235 Barg Design Pressure - Bredero Shaw Leith
Max Design Life
25 years
Seabed to below rotary table
211.338m
Longest well drilled
6236 mmd
Radius covered by platform
6000m
Water injection
162,000 stbwpd (2 x 70% sulzer WI pumps)