West Seno, Makassar Strait Deepwater Development, Indonesia
Key Data:
Operator
Unocal
Water depths
2,400ft to 3,400ft
Reservoir sands
Miocene
Structure
Four-way dipping north-south oriented faulted anticline
Porosity
Up to 30%
Permeability
10mD to 1,000mD
Discovery
1998
Wells
West Seno 2 (205ft pay); West Seno 1 (270ft oil, 103ft gas); West Seno 5 (60ft oil, 141ft gas); West Seno 3 (24ft oil, 39ft gas); West Seno 7 (163ft oil); West Seno 8 (127ft oil, 97ft gas)
Production phase
August 2003
Production rates
40,000b/d
Export
12in diameter pipelines to Santan terminal, 40 miles away
Pipelay vessel
Lorelay
Total pipeline length
59.5km
TLP A Field Development
Installed
February 2003
Wells
28 wells
Deck weight
1,700t
Hull
4,800t
Tendons
3,200ft
Segments
18ft x 165ft
Diameter
26in
Wall thickness
1.036in
Tender assist vessel
West Alliance
TLP B Field Development
Installed
2005
Location
3 miles from TLP A
Wells
20
Well slots
24
Completion
2006
FPU
Location
500m from TLP A
Mooring
Spread-moored barge
Water depth
3,200ft
Processing capacity
60,000b/d oil, 150million ft³/d gas, 40,000b/d water
Reservoir support
50,000ft³/d gas
Hull weight
6,500t
Topsides weight
1,900t
Total weight
8,400t
Featured Suppliers:
Autronica Fire and Security - AutroSafe Fire and Gas Detection System (IFG) - for the Oil, Gas and Petrochemical Industry
M3 Marine - Offshore Ship Broking and Consultancy Services
ORGA - Aids to Navigation and Helideck Lighting Packages
Timberland - Hydraulic Drum Winches, Traction Winches, Chain Stoppers, Chain Jacks
Turner Designs Hydrocarbon Instruments - Oil in Water Monitoring and Measurement
Twin Filter - Offshore Filtration Equipment and Consumables
