Aker BP ASA has proven gas in another well in production license 261 in the Norwegian Sea and is considering developing the discoveries in the block through tieback to existing infrastructure.
Well 6507/2-7 S, about 12 kilometers (7.5 miles) of the Skarv field, “was drilled to confirm the size of the previous discoveries made in 2022 in 6507/2-6 (Storjo East and Kaneljo in Jurassic and Cretaceous reservoir rocks, respectively)”, the Norwegian Offshore Directorate said in a press release.
The primary exploration target is now estimated to hold two million to 8.7 million cubic meters (70.6 million to 307.2 million cubic feet) of recoverable oil equivalent based on preliminary findings, revised from 2.6 million to 10.3 million cubic meters (91.8 million to 363.7 million cubic feet). The new estimates correspond to about 13 million to 55 million barrels of oil equivalent, according to the Directorate.
Meanwhile preliminary estimates placed volumes in the secondary exploration target at 1.3 million to 1.8 million cubic meters (45.9 million to 63.6 million cubic feet), or eight million to 12 million barrels of oil equivalent. The previous estimate was 900,000 to 1.5 million cubic meters (31.8 million to 53 million cubic feet).
“The primary exploration target for well 6507/2-7 S was to prove gas in reservoir rocks in the Tilje Formation in the Lower Jurassic”, the Directorate said. “The secondary exploration target was to prove gas in reservoir rocks in the Middle Jurassic (the Garn Formation) and in reservoir rocks in the Upper Cretaceous (Lysing Formation).
“In the primary exploration target, well 6507/2-7 S encountered gas in the Tilje Formation, which is 133 meters [436.4 feet] thick, 43 meters [141.1 feet] of which in sandstone rocks with moderate to poor reservoir quality. The gas/water contact was not encountered.
“In the secondary exploration target in the Garn Formation, well 6507/2-7 S encountered a 30-meter [98.4 feet] gas column in sandstone rocks totaling around 14 meters [45.9 feet] with poor reservoir quality. In the other secondary exploration target, well 6507/2-7 S encountered a gas column of around 8 meters [26.2 feet] in the Lysing Formation in sandstone rocks totaling 65 meters [213.3 feet] with very good reservoir quality. The gas/water contacts were not encountered in any of the formations”.
A production test on the upper part of the Tilje Formation yielded 300,000 cubic meters (10.6 million cubic feet) of gas per flow day through a 20/64-inch nozzle opening, the Directorate said.
Appraisal well 6507/2-7 S was drilled to 5,098 meters (16,725.7 feet) of vertical depth and 5,140 meters (16,863.5 feet) of measured depth below sea level. The site’s water depth is 340 meters (1,115.5 feet). Drilling, conducted by Odfjell Drilling Ltd.’s Deepsea Nordkapp rig, was terminated in the Are Formation in the Lower Jurassic age. The well has been temporarily plugged, the Directorate said.
The rig proceeds to production license 932, where Aker BP is also the operator, the Directorate said.In production license 261, Aker BP holds a 70 percent operating stake with Wintershall Dea Norge AS owning the remaining 30 percent.
Source:https://www.rigzone.com