Norwegian energy provider Statoil and partner Petoro have proven considerable additional resources in the Shetland Group/Lista Formation in the Gullfaks licence.
The Shetland Group and the Lista Formation are younger and slightly shallower deposits with different properties compared to the deposits of the Brent Group where the Gullfaks main reservoirs are located.
Indications of hydrocarbons in the Shetland Group/Lista Formation in the Gullfaks licence have been known for a long time, but they have not yet been developed due to poor reservoir qualities. A new well test in this interval however indicates good flow rates.
Production well 34/10-A-8 on the Gullfaks A platform, where the well test is carried out, currently provides a high and stable production of 7,500 barrels/day. The well has produced nearly 1 million barrels since December 2012.
Preliminary calculations based on interpretation, modelling, formation testing and sampling in the relevant interval indicate that the discovery contains in the range of 40-150 million recoverable barrels of oil equivalents. However, this resource estimate involves a high degree of uncertainty. While the models indicate further upside potential, data gathering and studies are currently ongoing to clarify the potential and further development of these resources.
"The discovery provides new volumes that can give high-value production in a short time as well as new and promising perspectives for the field and the installations," says Øystein Michelsen, executive vice president for Development and Production Norway. "This is a result of Statoil's strategy for revitalisation of the Norwegian continental shelf."
Located in the Tampen area in the northern North Sea, Gullfaks came on stream on 22 December 1986. The field development consists of three permanent installations, which have produced more than 2.4 billion barrels of oil and more than 56 billion cubic metres of gas.
The licensees of the Gullfaks Field are operator Statoil with 70% and partner Petoro with 30%.
(NRK/Aftenposten/Prtess release)
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