Liza deepwater oil field in the Stabroek Block, approximately 190km offshore Guyana, is planned for a second phase offshore development.
Liza is the first oil field to be discovered and planned to be brought into production in the Stabroek Block, which is operated by ExxonMobil’s subsidiary Esso Exploration and Production Guyana Limited (EEPGL).
EEPGL holds a controlling 45% stake in the block, while Hess Guyana Exploration and CNOOC Nexen Petroleum Guyana own 30% and 20% interests respectively.
Liza phase two development will follow the phase one development on the field, which is expected to achieve first oil in 2020.
Key contracts for Liza phase two have been awarded and the project awaits the environmental permit and final investment decision.
Planned to be developed with more number of production wells than Liza phase one, and a separate floating production, storage and offloading (FPSO) facility, Liza phase two is expected to produce up to 220,000 barrels of oil-equivalent per day (boed), starting from 2023.
Liza phase two discovery and development details
Liza oil field was discovered by the Liza-1 discovery well in May 2015.
Liza phase two development plan is based on the drilling result of Liza-4 well in March 2017, which encountered more than 197ft of high-quality oil-bearing sandstone reservoirs in the Liza prospect.
The proposed development concept for Liza two is similar to that of Liza phase one. It will involve up to 40 wells, consisting of a combination of producer as well as water and gas injection wells to be drilled at two subsea drill centres.
It will also include associated subsea equipment such as umbilical, risers and flowlines, and a second floating, production, storage and offloading vessel (FPSO) on the Liza field.
Expected to be brought on stream in 2023, Liza phase two, together with Liza phase one, will bring the total production capacity of the Liza oil field to 340,000boed.
Liza phase two FPSO details
The Liza-2 FPSO, to be moored at a water depth of 1,600m, will have the capacity to produce 220,000boed.
It will also have the capacity to treat 400 million cubic feet of associated gas and inject 250,000 barrels of water a day.
The crude oil storage capacity of the FPSO will be two million barrels.
Contractors involved with Liza offshore oil field phase two
Ramboll US Corporation was awarded a $40m contract by Guyana’s Environmental Protection Agency (EPA), in May 2018, to undertake the review of the environmental impact assessment (EIA) of the Liza phase two development.
SBM Offshore was awarded the front-end engineering and design (FEED) contract for the Liza-2 FPSO, in July 2018.
Subject to government approvals and project sanction, SBM Offshore will also be responsible for the construction, installation as well as the lease and operation of the Liza-2 FPSO for a period of up to two years, following which the FPSO ownership and operation will be transferred to EEPGL.
Saipem was awarded the detailed engineering, procurement, construction and installation contract for the risers, flowlines, and associated structures and jumpers for Liza phase two development, in August 2018.
The contractual scope also includes the transportation and installation of umbilicals, manifolds, and associated foundations for the production as well as water and gas injection systems of Liza phase two.