American Oil and Gas Reporter - June 2016 - 88

SpecialReport: Offshore Technology
FIGURE 4

of competitive bidding and sole-source
awarding, based on historical client project data, operational experience, and input solicited from equipment vendors to
determine optimal pricing and delivery
schedules for topsides equipment.
Wood Group Kenny provided detailed
design, procurement support, and engineering support for fabricating the subsea facilities (Figure 3). The subsea engineering
contractor solicited input from key equipment vendors to determine subsea equipment pricing levels and delivery schedules.
Most subsea equipment was sole-sourced.
Long-term relationships with key suppliers played a big part in delivering the subsea components in a timely fashion.

Lucius Truss Spar Facility

Capacity

Spar Features

Topsides Dimensions

Mooring System

Spar Diameter
Spar Length
Spar Draft
Freeboard
Topsides Payload
Hull Weight
Location
Water Depth
Subsea Tieback Pairs
Water Injection
Gas Export
Oil Export

80,000 BOPD
450 MMcf/d
110 feet
605 feet
550 feet
55 feet
15,000 tons (initial)
23,000 tons
Keathley Canyon 875
7,100 feet
6-initial, 4-future
2-future
16" SCR
16" SCR

Helideck
Main Deck
Production Deck
Cellar Deck

57' x 102' EL (+) 202'
136' x 188' EL (+) 158'
136' x 188' EL (+) 125'
136' x 188' EL (+) 90'

Subcellar Deck

73' x 83' EL (+) 72'

Permanent 9-Line (3 x 3 group) Chain 6.18"Ø)
Polyester (4,200 kip MBS)
Chain (6.18"Ø) mooring lines secured to the sealbed with suction piles (18'Ø x 112' long)

Wood Group Mustang provided frontend engineering design, detailed design,
procurement support, and engineering
support for the fabrication and offshore

construction effort, including administering an effective project change management system. The topsides engineering
contractor employed a combined strategy

Hull And Risers
As shown in Figure 4, the Lucius
hull's hard tank extends below the mean
waterline to provide buoyancy. The truss
section is fitted with two heave plates and
connects the hard tank-designed for full
hydrostatic pressure-to the soft tank,
which provides buoyancy only during
the float-off, horizontal tow-out, and the

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50 Briar Hollow Lane , Suite 400W

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88 THE AMERICAN OIL & GAS REPORTER

Houston, Texas 77027

Tel (713) 680-9996
American Oil and Gas Reporter - June 2016

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