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Neptune Field, Gulf of Mexico

Location

Gulf of Mexico

Blocks

Atwater blocks 573, 574, 575, 617, and 618,

Blocks

120 miles from Louisiana

Landfall

120 miles from Louisiana

Water Depths

4,200ft to 6,500ft

Recoverable Reserves

Between 100 and 150 million barrels of oil equivalent

Discovered

1995

Geology

Western Atwater Foldbelt.

Neptune-2

1997

Neptune-3

2002, 120ft of net pay

Neptune-5

2003, 500ft of net pay

Neptune-7

2004, 114ft of net pay

Rig

Development Driller 1

Development

Tension Leg Platform (TLP)

Quarters

26 people permanent, 24 temporary

Helideck

S-92 helicopter

Hull

Mono-column steel hull

Column Height

128 ft (39m)

Diameter

79ft (23m)

Pontoons

3

Tendons

6

Tendon Segments

289ft (88m)

Piles

6 piles

Diameter

96ins

Length

414ft

Gross Costs

$850m

Oil and Gas Export

Caesar and Cleopatra trunk lines

Oil Export

20in diameter by 23 miles

Gas Line

12.7in diameter by 23 miles

Operator

BHP Billiton (35%)
Marathon Oil (30%)
Woodside Energy (20%)
Maxus Exploration (15%)

Design

Atlantia Seastar

EPCi

SBM Atlantia

Fabricated

Gulf Island fabricators

Assembled

Heerema Marine Contractors

Tendon Supplier

Europipe.

Connections

Vetco
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