Equinor’s delineation wells in the North Sea tightened up the range of resources in the Heisenberg discovery, the Norwegian Offshore Directorate said March 21.

Equinor is planning a well in the second quarter of this year to explore an additional deep prospect, Angel, while delineating Heisenberg toward the west, license partner DNO said.

Surrounded by major North Sea hubs Troll B, Kvitebjørn and Gjøa, Heisenberg lies within the tieback range of these hosts, DNO said, and studies are underway for fast-track development of Heisenberg in coordination with a string of recent discoveries in the area in which DNO is a partner.

Before the appraisal, resource estimates were between 4.1 MMcmoe and 9 MMcmoe, and the range is now 3.8 million cubic meters of oil equivalent (MMcmoe) to 8.9 MMcmoe, or 24 MMboe to 56 MMboe.

These are the first and second wells drilled in PL 827 SB, and the wells were not formation tested, although data acquisition and sampling were carried out. This is additional acreage for PL 827 S, where the original discovery was made.

Preliminary calculations place the size of Hummer, which was a secondary, deeper target, between 0.1 MMcmoe and 0.6 MMcmoe.

Deepsea Stavanger drilled the wells in 364 m water depth.

Equinor operates the license with 51% interest on behalf of partner DNO with 49%.

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