Project Profile
Value: Undisclosed
Startup Year: 2005
Water Depth: 1,372 m
Location: Blocks 783 and 782, Green Canyon, 100 miles S of Grand Isle, Louisiana
Reserves: 80,000 bopd & 60 MMcfd natural gas
Produced Water Peak: 50 M bwpd
Field Design Life: 35 years
The Mad Dog Field was discovered in 1998 and is one of BP’s largest discoveries in the Gulf of Mexico to date. Field production began in 2005 from the initial development, which included a truss spar floating system equipped with facilities for simultaneous production and drilling operations. The current Mad Dog spar facility is designed to process 80,000 barrels of oil and 60 million cubic feet of gas per day. Oil and gas are transported to 3rd party operated infrastructure via the BP-operated Caesar (oil) pipeline and Cleopatra (gas) pipeline systems.
The massive Mad Dog platform is BP’s only floating spar facility in the gulf; the bulk of its 550 (168 m) foot-long single column sits under water. The total deck area is 96,000 ft2.
The facility implemented the first polyester mooring system ever employed on a truss spar and at the time accomplished the largest single topsides lift of 8620 tons.
Appraisal drilling in 2009 in the field more than doubled the resource estimate to more than 4 billion barrels Stock Tank Original Oil In Place (STOOIP).
• Reservoirs are Miocene sandstones.
Moored Truss Spar-Production, Drilling and Quarters (replacement in progress); ABS Floating Offshore Installation Classed “Truss Spar”; Production Risers; Dry trees
Mad Dog Field is currently producing from the Mad Dog spar, using dual barrier production risers and dry trees. The spar hull was built in Pori, Finland and the topsides modules were fabricated in Morgan City, Louisiana. The drilling rig module was fabricated in Ingleside, TX. The quarters were fabricated in Sweden.
Topsides Description
Topsides layout: Single production/ utility module
Topsides lift weight: 8600 short tons (7802 tonnes)
Main power generation capability: 17 MW
Drilling rig derrick dynamic load: 1 500 000lbs
Living Quarters: 150 persons
Helideck: Sized for an S-92
SPAR hull description
Hull weight : 21000 short tons (19051 tonnes)
Hull diameter: 128ft (39m)
SPAR length: 550ft (168m)
Mooring: 11x 10.6’’ polyester rope & chain with suction pile
Freeboard to SPAR Deck: 50ft (15m)
BP is currently reviewing existing plans and other options in evaluating how to develop the Mad Dog Phase 2 project. (March, 2016)
Operators:
BP America: Operator with 60.5%
Chevron: 15.6% interest
BHP Billiton: 23.9% interest
Contractors:
AMEC: Hook-up and commissioning
FMC Technologies: Wet system subsea
Heerema: Installation
J Ray McDermott: Topsides
Leirvik Emtunga: Quarters
MMHE (Malaysia Marine & Heavy Engineering):
Mustang Engineering: Automation and control
Pride International: Platform rigs
Saipem: Replace the drilling rig unit
Technip: Spar fabrication
Transocean: GSF Development Driller I
WorleyParsons: Topsides facilities EPMS