Bundles and towed installation
18
Bundles and towed installation
BP KINNOULL – BUNDLE LAYOUT
Production pipe = 14 in
Gaslift pipe = 6 in Methanol injection pipe = 3 in
Kinnoull drill centre
Intermediate towheads Bundle 4
Carrier pipe = 34.5 in
Insulation
Bundle 3
Andrew platform
Intermediate towheads
Bundle 2 Intermediate towheads
Bundle 1
PLEM towhead
This field layout represents one of the most complicated field developments using multiple bundles to date. It is the longest ever bundle tie back at 27.1 km (16.8 miles) utilising four bundles interconnected to BP’s Andrew Field. The longest individual bundle was 7.2 km (4.4 miles)
Carrier Pipe = 876 mm (34.5 in) Sleeve Pipe = 508 mm (20 in) Production Pipe = 356 mm (14 in) Gas Lift Pipe = 152 mm (6 in) Methanol Injection Pipe = 76 mm (3 in)
ADDITIONALFEATURESNEEDEDFORRE-USABLEBUNDLES
ADDITIONAL FEATURES NEEDED FOR RE-USABLE BUNDLES Marginal, short-term field developments One-off bundles may not be economically viable Requirements Ability to decommission and reposition Options Additional piggable ballast water line ‘Flat-pack’ with piggable core line Economics can be attractive to the operator Slightly more expensive for first installation Reduced or no construction costs for second field Issues of straps and refloating of tow/trailheads Cassandra N ˚ 2
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