MOL used the âDeepsea Bergenâ S/S to drill an exploration well on its Evra and Iving prospects in PL 820 S located between the Jette and Ringhorne fields. 25/8-19 S was spudded on 2 November 2019 and was drilled to TD at 2,760 m (2,522 m TVDSS) in Basement. The well has made an oil and gas discovery at Iving in the Upper Triassic Skagerrak Formation with estimated recoverable resources of 12-71 MMboe (85% light oil). A 34 m gas column and a 45 m oil column were present (with 22 m net sandstone) with no OWC. Oil was also proven in a 6 m sandstone in the Lower Jurassic Eiriksson Formation, in 41 m of weathered and fractured Basement and in thin sands totalling 7 m in the Paleocene Heimdal Formation. The Eocene / Paleocene injectite objective (Evra) did not contain any sandstone and the Lower Jurassic Nansen Formation (45 m sandstone) and Paleocene Ty Formation (75 m sandstone) were both water-wet. On 31 December 2019 MOL kicked off appraisal sidetrack 25/8-19 A and drilled this to TD at 2,950 m (2,613 m TVDSS) in Basement. An 18 m oil and gas-bearing sandstone was confirmed in the Skagerrak Formation, again with no OWC, and oil was also present in Basement (poor quality) and the Heimdal Formation (a 2 m sandstone).The Eiriksson Formation (30 m) in this wellbore was water-wet as was the Nansen Formation (50 m). However, the Evra Eocene injectite was present (8 m) and contained oil and gas. Mini DSTs were performed in the Eocene, Heimdal, Eiriksson, Skagerrak and Basement and a full DST was carried out in the Skagerrak. This flowed at 2,988 bo/d (40 degrees API) plus 2.7 MMcfg/d through a 32/64" choke. Permanent pressure gauges have been installed in the well to identify reservoir connectivity during further appraisal. On 18 March 2020 MOL was preparing to move the rig off location.  Pre-drill potential recoverable resources were quoted at 181 MMboe (source: Lundin, October 2019). The Evra injectite prospect (remobilised Paleocene Hermod Sandstones in the Eocene Hordaland Group) was mapped as two sand bodies â one at 1,783 m and the other at 2,023 m. The Iving prospect was seen as a four-way closure at the BCU.   PL 820 S contains the 2001 dry hole 25/8-13 which was drilled by Esso. Good reservoir sands were present in both the Ty Formation and the Statfjord Formation, although both were water-bearing.  MOL Norge AS operates PL 820 S with a 40% interest. It is partnered by Lundin Norway AS (40%), Pandion Energy AS (10%) and Wintershall Dea Norge AS (10%).
Norway (Heimdal Terrace (Viking Graben Province)) Heimdal