Gulf of MexicoMad Dog field

Moored Truss Spar — Production, Drilling and Quarters “Truss Spar”; Production Risers; Dry trees

Location Green Canyon 782, 100 miles S of Grand Isle, LouisianaOperator BP (60.5%)Partner BHP Billiton (23.9%)Partner Chevron (15.6%)Water Depth 4500 ft (@ spar location)Design Life 25 years

Processing CapabilityOil 100,000 BOPDGas 60 MMSCFDProduced Water Peak 50 M BWPD

Topsides DescriptionTopsides layout Single production/ utility moduleTopside lift weight 8600 short tonsMain Power Generation Capability 17 MWDrilling Rig Derrick dynamic load 1,500,000 lbsQuarters 162 personsHelideck Sized for an S-92

SPAR Hull DescriptionHull Weight 21,000 short tonsHull Diameter 128 ftSPAR Length 550 ftMooring 11x 10.6” polyester rope & chain with suction pileFreeboard to SPAR Deck 50 ftDiscovery Announced 1998First Oil January 2005

BP in the Deepwater Gulf of Mexico

The deepwater Gulf of Mexico is one of BP’s core areas globally, and BP believes it has significant opportunities for future growth based around four major producing hubs, four non-operated hubs and a highly prospective acreage position.

Nearly three decades after BP began exploring the deepwater Gulf of Mexico, the company remains one of the region’s leading oil and gas producers. Between 2014 and 2017, its average daily production in the region increased from 252,000 barrels of oil equivalent to more than 300,000 barrels per day. This reflects BP’s continued investment at its four massive Gulf of Mexico production platforms: Atlantis, Na Kika, Thunder Horse and Mad Dog. Elsewhere in the gulf, the company holds interests in four hubs that other companies operate: Mars, Olympus, Ursa and Great White.

In a significant move, BP approved the Mad Dog 2 project for development in 2016. The $9 billion project is expected to start up in late 2021 and produce up to 140,000 barrels of crude oil per day from as many as 14 production wells.

By executing projects through existing infrastructure at its major hubs BP is leveraging a portfolio of high-value, longer-life assets to provide operational momentum for years to come.

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 100,000 barrels of oil and 60 million cubic feet of gas per day. Oil and gas are transported via third party operated infrastructure on the Caesar (oil) pipeline and Cleopatra (gas) pipeline systems. 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 the field more than doubled the resource estimate to more than 5 billion barrels Stock Tank Original Oil In Place. In 2016 BP sanctioned the Mad Dog 2 project to deliver a second platform to the field, highlighting its longterm commitment to the region.

• BP operates the field (60.5% interest), with co-owners BHP Billiton (23.9% interest) and Chevron (15.6% interest).

• 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.

• Reservoirs are Miocene sandstones.

June 2018