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Anadarko Petroleum Corp.’s Atum exploration well discovered another significant natural gas accumulation within the Offshore Area 1 of the Rovuma Basin.
The Atum discovery well encountered more than 300 net ft (92 m) of natural gas pay in two high-quality Oligocene fan systems. Preliminary data indicates this latest discovery is connected to the partnership's recent Golfinho discovery approximately 10 miles (16.5 km) to the northwest in the Offshore Area 1.
"The combined success at Atum and Golfinho and apparent connectivity of these Oligocene fan systems, indicate these discoveries represent our partnership's second major natural gas complex offshore Mozambique," said senior vice president of worldwide exploration, Bob Daniels. "We estimate this new complex, which is entirely within the Offshore Area 1 block, holds 10 to 30-plus trillion cubic feet (Tcf) of incremental recoverable natural gas resources. We plan to immediately commence a four-well appraisal program of this complex, which has the potential to underpin a large liquefied natural gas (LNG) development."
The Atum exploration well was drilled to a total depth of approximately 12,665 ft (3,860 m) in water depths of approximately 3,285 ft (1,000 m). Once operations are complete at Atum, the partnership plans to commence appraisal activities that are expected to be followed by a drillstem testing program in the Golfinho and Atum complex.
"With this latest discovery at Atum and a successful upcoming appraisal program, we believe the total estimated recoverable natural gas resource in Mozambique's Offshore Area 1 is between 30 and 60 Tcf, and the current upside for total gas in place for the discovered reservoirs on the block is approaching 100 Tcf. We still have additional exploration opportunities that could expand the resource potential further," said Anadarko president and chief executive officer, Al Walker. "A recoverable resource base of this scale supports our initial two-train development plans, as well as significant future expansions. Our current activity is focused on achieving reserve certification and a final investment decision in 2013, as the partnership works toward expected first sales of LNG in 2018."
Anadarko is the operator in the Offshore Area 1 with a 36.5 % working interest. Co-owners include Mitsui E&P Mozambique Area 1 Ltd., 20%; BPRL Ventures Mozambique B.V., 10%; Videocon Mozambique Rovuma 1 Ltd., 10%; and Cove Energy Mozambique Rovuma Offshore Ltd., 8.5%. Empresa Nacional de Hidrocarbonetos’ 15% interest is carried through the exploration phase.