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Project overview

Exploration wells drilled in the Stabroek Block

  • Liza-1 well discovery was announced in May 2015
  • Liza-2 well was drilled and tested in July 2016
  • Liza-3 well was drilled in October 2016, confirming a world-class resource discovery in excess of 1 billion oil-equivalent barrels
  • Liza-4 well was drilled in March 2017 and encountered more than 197 feet of high-quality, oil-bearing sandstone reservoirs, which will underpin a potential Liza Phase 2 development
  • Appraisal drilling at Liza 3 identified an additional high quality deeper reservoir directly below the Liza field, which is estimated to contain resources between 100 and 150 million oil-equivalent barrels
  • Skipjack-1 was drilled in September 2016; this did not encounter commercial quantities of hydrocarbons
  • Payara-1 well discovery was announced in January 2017; Payara is ExxonMobil’s second oil discovery on the Stabroek Block and was drilled in a new reservoir – encountering more than 95 feet of high quality, oil bearing sandstone reservoirs
  • Payara-2 well discovery was announced in July 2017; Payara-2 encountered 59 feet (18 meters) of high-quality, oil-bearing sandstone reservoirs
  • The Payara discovery is estimated at approximately 500 million oil-equivalent barrels
  • Snoek-1 well discovery was announced in March 2017; Snoek is ExxonMobil’s third oil discovery on the Stabroek Block and was drilled in a new reservoir – encountering more than 82 feet of high quality, oil-bearing sandstone reservoirs; the well data will be analyzed in the coming month to better understand the full potential of the well
  • Turbot-1 well discovery was announced in October 2017, Turbot is ExxonMobil’s fifth oil discovery on the Stabroek Block and was drilled in a new reservoir – encountering 75 feet (23 meters) of high-quality, oil-bearing sandstone reservoirs
  • Ranger-1 well discovery was announced in January 2018, Ranger-1 well encountered approximately 230 feet (70 meters) of high-quality, oil-bearing carbonate reservoir. The well was safely drilled to 21,161 feet (6,450 meters)
  • Pacora-1 well is ExxonMobil’s latest discovery to date, the discovery was announced in February 2018, Pacora-1 well encountered approximately 65 feet (20 meters) of high-quality, oil-bearing sandstone reservoir. The well was safely drilled to 18,363 feet (5,597 meters)
  • The gross recoverable resources for the Stabroek block are now estimated to total more than 3.2 billion recoverable oil-equivalent barrels, based on discoveries at Liza, Liza Deep, Payara, Snoek and Turbot
  • The Stena Carron drillship will move to the Pacora prospect, 4 miles from the Payara discovery
  • Further exploration drilling is planned on the Stabroek Block for 2018, including potential appraisal drilling at the Ranger discovery

Guyana project overview map

Liza Phase 1 project

Development description

  • Liza Phase 1 development is approximately 190 kilometers offshore in water depths of 1500 – 1900 meters
  • The development plan includes completion of a floating production, storage and offloading (FPSO) vessel designed to produce up to 120,000 barrels of oil per day
  • The FPSO facility will develop approximately 450 million barrels of oil from the Liza Field
  • Four drill centers are envisioned with 17 wells total: eight production wells; six water injection wells; three gas injection wells

fpso subsea field layout

Liza Phase 1 project

Recent activities

  • Esso Exploration and Production Guyana Limited (EEPGL) submitted an application for a production license and the initial development plan for the Liza field in December 2016
  • The development plan includes development drilling, operation of the FPSO, and subsea, umbilical, riser and flowline systems
  • EEPGL awarded contracts to SBM offshore for an FPSO vessel.  Under the contract, SBM offshore will perform front end engineering and design (FEED) for the FPSO, and, subject to a final investment decision in 2017, will construct, install and operate the vessel
  • EEPGL awarded contracts to TechnipFMC for the engineering, manufacture and delivery of the subsea production system (SPS) equipment for the proposed Liza deep water project
  • EEPGL awarded contracts to  Saipem for the engineering, procurement, construction and installation (EPCI) of the subsea umbilicals, risers and flowlines for the Liza deep water project
  • In June 2017, the Guyana Environmental Protection Agency issued an environmental permit and the Ministry of Natural Resources  issued a production license for the Liza field
  • In June 2017, ExxonMobil announced a final investment decision to proceed with development of the first phase of oil production at the Liza field offshore Guyana
  • In June 2017, EEPGL awarded contracts for shore base services for the Liza Phase 1 development to Guyana Shore Base Inc. (GYSBI), a majority Guyanese-owned corporation located in the Muneshwers Houston Port
  • In August, EEPGL awarded contracts for drilling services to Noble Corp. The Noble Bob Douglas drillship was contracted for a three-year period and is expected to start drilling Liza Phase 1 development wells in first half of 2018
  • ExxonMobil completed baseline 4D Seismic over the Liza Field in 2017

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Liza Phase 1 project


Subsea, Umbilical, Risers and Flowlines (SURF) Installation

  • Fleet of specialty and multi-purpose vessels for installation
  • Majority of SURF equipment shipped directly offshore, some staging of materials at shorebase 
  • Placement of risers and flowlines on the seabed until FPSO arrival
  • Concurrent drilling and installation operations

Floating Production Storage and Offloading (FPSO) Installation

  • Installation of mooring system to keep the vessel in place 
  • Connection of FPSO to mooring system and SURF components
  • Perform final onsite commissioning of remaining FPSO and SURF systems
  • Startup of FPSO and SURF components for production operations

Liza Phase 1 project

Logistics support

  • Logistics support for 1 FPSO and 1 to 2 drilling vessels
  • Use of shorebase, warehouses, pipeyards and waste facilities
  • Marine support vessels
  • Aviation support

Liza Phase 1 project

Production operations

FPSO offloading to conventional tanker illustration

  • FPSO capable of producing 120,000 barrels of oil per day
  • FPSO has 60-80 personnel for routine operations
  • Tug assisted offloading to conventional tanker approximately every 5-10 days at peak production

Liza Phase 2

EEPGL has started the process for a potential Liza phase 2 development. As part of the regulatory process, EEPGL submitted an application to the Environmental Protection Agency (EPA) for environmental authorization and are progressing planning on a potential production concept for Liza phase 2.

The potential concept involves a second floating, production, storage and offloading vessel (FPSO) and related subsea equipment, umbilical, risers and flowlines. The proposed development concept is similar to that of Liza phase 1. Approximately 35-40 wells may be drilled at two subsea drill centers, consisting of a combination of producers and injectors to support production of oil, injection of water and reinjection of associated gas. The FPSO will have an estimated production capacity of approximately 190,000 to 220,000 barrels of oil per day.

For more details and the full project summary visit the EPA’s website.