While Janet Hann was briefing the Perth Petroelum Club audience last night, Santos managing director John Ellice-Flint was unveiling the official sanction of the project in New York at the same time.
The project will be one of Australia's largest oilfield developments in nearly a decade with initial production forecasts for a daily rate of 70,000 to 80,000 barrels of oil per day (bopd), building up to 100,000bopd.
Total production is forecast to be around 13.8 million barrels in 2005 and approximately 35 million barrels in 2006, based on currently estimated proven and probable (2P) reserves of 101 million barrels of oil.
The proven plus probable plus possible (3P) reserves move the figure up to 169 million barrels while the companies will test nearby prospects while drilling the development wells.
If successful, this drilling could extend the fields' lives beyond 10 years.
The fields will nearly double production and revenue for the Adelaide-based Santos, with its share of the new project equal to its current annual output of 12 mmbbls.
"It is another company-building development for us, following only four months after the formal approval for another Santos cornerstone project - the LNG stage of the Bayu-Undan project in the Timor Sea," said Ellice-Flint.
"Oil production from the Mutineer-Exeter development will provide Santos with a significant boost in oil production and revenue."
The Exeter and Mutineer fields are located about 10km apart, and will require the drilling of up to seven sub-sea wells for development with drilling scheduled to start in the first quarter 2004.
Installation of the mooring systems for the Floating Production Storage and Offtake (FPSO) facility and sub sea infrastructure will occur prior to the FPSO arriving at the location.
The FPSO, which will be a converted double-hulled tanker, will be moored on a disconnectable turret system about 3.5km south of Mutineer. The mooring system, as in other North West Shelf developments, is disconnectable to allow the FPSO to move off location during tropical cyclones.
The storage capacity of the FPSO is 930,000bbls and it's planned to lift parcels of around 600,000 barrels.
Santos and its joint venturers has a tender out to bid for asn FPSO on a supply, own and operate, performance-based service agreement. This service agreement represents an estimated equivalent present cost of around $285 million for the facility over the most likely term. Full award of this contract will be finalised within days.
Capital expenditure for the Mutineer-Exeter development is $480 million, of which about $160 million is in drilling and completion of the wells, $160 million in the engineering, procurement and installation of the sub-sea flow line controls and mooring system, and around $95 million in the flow boost systems.
The FPSO facility service agreement has an estimated present cost of around $285 million.
Reserves and production rates will be confirmed during development drilling. Production volume forecasts are also subject to the precise start-up date, field performance and the other factors affecting new oil developments.
The Mutineer and Exeter fields are located in Exploration Permit WA 191-P. Santos (33.4% interest), is the operator, with joint venturers, KUFPEC (33.4%), Nippon Oil Exploration (25.0%) and Woodside (8.2%).