The âLeiv Eirikssonâ S/S has been used by Lundin to drill an appraisal well at Alta with a 720 m horizontal section through the Permo-Carboniferous Falk and Orn formation (Gippsdalen Group) reservoir (32 m below the GOC and 12 m above the assumed OWC). 7220/11-5 S is located in PL 609 approximately 1.5 km west of 7220/11-3 and 3 km southwest of 7220/11-4 and was spudded on 6 April 2018. TD is 3,057 m (1,912 m TVDSS) in the Orn Formation and well results are better than expected with excellent reservoir quality, productivity and connectivity. A completion string was run and a two-month extended well test was carried out to monitor reservoir performance, with pressure gauges having already been installed in 7220/11-4 so that the pressure communication across the field could be observed during the testing. Over the two month period two tests were performed. A 30 day test flowed at a constrained rate of 7,500 bo/d through a 60/64â choke and a 25 day test flowed at rates of up to 18,000 bo/d through a 118/64â choke. In total 675,000 bo was produced and shipped, using the âTeekay Scott Spiritâ tanker, to Mongstad. As a result of the well reserves are expected to be upgraded, with the update due to be published in early 2019. If development of Alta goes ahead Lundin is likely to use subsea wells tied-back to an FPSO. On 25 September 2018 the well was being abandoned.  Alta was discovered in 2014 by exploration well 7220/11-1. The objective was a composite section of Triassic Kobbe Formation sandstones and Permo-Carboniferous weathered carbonates, sandstones and intrusives in a four-way dip closed structure. A 46 m oil column with an 11 m gas cap was proven in good quality carbonates of the Gipsdalen Group. Two tests were performed in the oil zone and flowed at a maximum rate of 3,260 bo/d plus 1.7 MMcfg/d through a 36/64â choke. Recoverable reserves were estimated at 125-400 MMboe (85-310 MMb of this being oil) at the time of discovery. However, an update in January 2018 led to a downgrading of reserves for the combined Alta and Gohta project to 115-390 MMboe (at discovery Gohta was estimated to contain reserves of 91-184 MMboe).    Two successful appraisal wells and two sidetracks were drilled at Alta in 2015, all confirming communication with the discovery well. The sidetrack of the second appraisal well, 7220/11-3 A, was re-entered in 2016 and was deepened and tested at a rate of 21 MMcfg/d through a 64/64â choke. Additionally, seawater was injected into the carbonate Falk and Orn Formations at rates of 5,000 b/d and 18,200 b/d respectively.     Appraisal well 7220/11-4 was drilled in 2017 and encountered a 4 m gas column and a 44 m oil column in Permo-Triassic clastic carbonates. Good communication with the previous Alta wells was confirmed from pressure data, with the same fluid contacts and gradients. The well was tested and flowed at a constrained rate of 6,050 bo/d through a 56/64â choke, indicating very good reservoir quality and lateral continuity through the reservoir. Sidetrack 7220/11-4 A deviated 900 m to the north and proved a 10 m gas column and a 44 m oil column in the Orn Formation with the same hydrocarbon contacts. The sidetrack was intended to help as a calibration point for 7220/11-5 S.    Interest in PL 609 is divided between Lundin Norway AS (40% + operator), DEA Norge AS (30%) and Idemitsu Petroleum Norge (30%).
7220/11-05 S (Alta) pos. appr. (Lundin op, 40%, Idemitsu 30%, DEA 30%) in PL 609, was drilled 700m horizontally in the oil zone, encountering all targeted reservoir intervals (Late Permian - Early Triassic Kobbe conglomerates and Ãrn carbonates), before an extended production test was carried out. The well flowed at a constrained rate of about 7500 bo/d for 30 days [60/64â choke], and then flowed at a maximum rate of up to 18000 bo/d for 25 days (118/64â choke - constrained by surface facilities).