ExxonMobil makes final investment decision to proceed with Liza Oil Development in Guyana

• Initial production system expected to produce up to 120,000 barrels of oil per day
• Development on track for production startup by 2020; less than five years after discovery
• Gross recoverable resources on Stabroek block have increased to an estimated 2 billion to 2.5 billion oil-equivalent barrels 

Exxon Mobil Corporation (NYSE:XOM) said today it has made a final investment decision to proceed with the first phase of development for the Liza field, one of the largest oil discoveries of the past decade, located offshore Guyana.

The company also announced positive results from the Liza-4 well, which encountered more than 197 feet (60 meters) of high-quality, oil-bearing sandstone reservoirs, which will underpin a potential Liza Phase 2 development. Gross recoverable resources for the Stabroek block are now estimated at 2 billion to 2.5 billion oil-equivalent barrels, which includes Liza and other successful exploration wells on Liza Deep, Payara and Snoek.

The Liza Phase 1 development includes a subsea production system and a floating production, storage and offloading (FPSO) vessel designed to produce up to 120,000 barrels of oil per day. Production is expected to begin by 2020, less than five years after discovery of the field. Phase 1 is expected to cost just over $4.4 billion, which includes a lease capitalization cost of approximately $1.2 billion for the FPSO facility, and will develop approximately 450 million barrels of oil.

“We’re excited about the tremendous potential of the Liza field and accelerating first production through a phased development in this lower cost environment,” said Liam Mallon, president, ExxonMobil Development Company. “We will work closely with the government, our co-venturers and the Guyanese people in developing this world-class resource that will have long-term and meaningful benefits for the country and its citizens.”

The Liza Phase 1 development can provide significant benefits to Guyana, including jobs during installation and operations, workforce training, local supplier development and government revenues to fund infrastructure, social programs and services.

The development received regulatory approval from the government of Guyana.

The Liza field is approximately 190 kilometers offshore in water depths of 1,500 to 1,900 meters. Four drill centers are envisioned with a total of 17 wells, including eight production wells, six water injection wells and three gas injection wells.

The Liza field is part of the Stabroek Block, which measures 6.6 million acres, or 26,800 square kilometers. Esso Exploration and Production Guyana Limited is operator and holds a 45 percent interest in the block.

Hess Guyana Exploration Ltd. holds a 30 percent interest and CNOOC Nexen Petroleum Guyana Limited holds 25 percent.

Esso Exploration and Production Guyana Limited is continuing exploration activities and operates three blocks offshore Guyana – Stabroek, Canje and Kaieteur. Drilling of the Payara-2 well on the Stabroek block is expected to commence in late June and will also test a deeper prospect underlying the Payara oil discovery.

CAUTIONARY NOTE:

Statements that reference future events or conditions in this press release are forward-looking statements. Actual future results, including project plans, costs, and schedules, production rates, and resource recoveries may differ significantly from the forecasts, depending on changes in oil or gas prices and other market or economic factors that affect the petroleum industry; the outcome of development programs; reservoir performance; unexpected technical difficulties or other technical or operating factors; the actions of governmental authorities or regulatory agencies; and other factors listed under the heading “Factors Affecting Future Results” on the Investor page at the ExxonMobil website at www.exxonmobil.com and in Item 1A of ExxonMobil’s most recent Form 10-K. References to barrels of oil and other quantities of oil or gas in this release include volumes that are not yet classified as proved reserves under SEC definitions, but that we believe will ultimately be produced.

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