Lundin Petroleum's latest appraisal well on the Gohta field, in the Barents Sea, has had disappointing results, resulting in a downgrade in the field's resource estimate.
Appraisal well 7120/1-5, in PL492, was 4km north of the original Gohta discovery well and was the second appraisal well on the Gohta discovery. The main objective of the well was to delineate the northeastern segment of the discovery. The well encountered a 300m gross sequence of Permian age carbonates with poor reservoir quality.
Hydrocarbon shows were observed but no pressure gradients could be established. The well will be permanently plugged and abandoned. Extensive data acquisition and conventional coring was carried out in the reservoir.
The Gohta discovery, made in Permian carbonate reservoir rocks in well 7120/1-3 in 2013, was estimated to contain gross contingent resources of between 91-184 MMboe prior to the drilling of well 7120/1-5.
The resource estimate for the discovery will be reduced as a consequence of the latest appraisal well, said Lundin.
"Gohta is considered a satellite opportunity to the larger adjacent Alta discovery and this result has no impact on Lundin Norway's appraisal and conceptual development plans for Alta, which includes an appraisal well which will be spudded imminently and an extended well test planned for 2018," says Lundin.
The well was Lundin's fourth well in the 2016/2017 drilling campaign on the Loppa High. It wasdrilled to 2502m total depth below mean sea level and in 344m water depth.
Lundin Norway is the operator of PL492 and holds 40% interest in the license, with partner Aker BP holding 60%.
The well was drilled using the Leiv Eiriksson semisubmersible drilling rig. Once the rig has plugged and abandoned the 7120/1-5 well, it will move about 15km to the northeast to spud the Alta appraisal well 7220/11-4 in PL609 where Lundin Norway is also operator.
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