Equinor 于 2 月 9 日报告称，在距离北海 Troll 油田约 10 公里的 Rasever Saser 矿区发现了可采储量为 17 MMboe 至 47 MMboe 的商业石油和天然气。

由于靠近 Troll Field，Equinor 负责西部勘探和生产业务的高级副总裁 Geir Sasertveit 表示，Rasever Saser 的发现具有商业意义。

Transocean Spitsbergen 钻井平台在挪威北海许可证 PL923 的水深约 350 m 处钻探了该发现的两口井。

据许可合作伙伴 DNO 称，发现井和后续评估侧线在三个侏罗纪布伦特群砂岩储层中发现了碳氢化合物。

挪威石油管理局(NPD)表示，31/1-3 S预探井的主要勘探目标是探明中侏罗世布伦特群Etive和Oseberg地层的石油。次要勘探目标是探明早侏罗世库克组的石油。31/1-3 S井钻探至海平面以下垂直深度3,558 m，实测深度3,568 m。该井终止于早侏罗世的 Johansen 组。

31/1-3 S 井在 Tarbert 和 Ness 组中遇到了约 80 m 的气柱，在 Ness、Etive 和 Oseberg 组中遇到了约 50 m 的油柱。Tarbert 组和 Ness 组上部储层质量较差至中等的砂岩层约 20 m，Ness、Etive 和 Oseberg 组储层质量中等至良好的砂岩层约 65 m。Cook 地层充满水并含有砂岩，储层质量中等至良好。

油/水接触发生在 Oseberg 地层海平面以下 3,227 m 的深度。

NPD 表示，评价井 31/1-3 A 的目标是描绘布伦特集团 2023 年 1 月在 31/1-3 S 井中发现的区域。31/1-3 A 井的垂直钻探深度为低于海平面 3,368 米，测量深度为 3,791 米。该井终止于 Drake 地层。

31/1-3A井Ness组钻遇油柱长约20 m，Ness组下部砂岩层长约30 m，储集层质量中等到差。油/水接触发生在 Ness 地层海平面以下 3,211 m 处。

NPD 表示，这些井没有进行地层测试，但已经进行了广泛的数据采集和采样。

这是 Equinor 自 2019 年秋季以来在该地区发现的第七个发现。

此前的 6 个发现分别是 2019 年的 Echino Saser、2020 年的 Swisher、2021 年的 Rasever Nord 和 Blasto、2022 年的 Toppand 和 Kveikje。

Equinor 报告称，这些发现的规模存在不确定性，但表示，各种估计的平均总体积约为 350 MMboe，相当于挪威中型石油或天然气田以及挪威海 Aasta Hansteen 油田的规模。

“quinor 已启动油田开发项目，通过与我们的合作伙伴合作利用现有基础设施来协调这些发现的开发。这一发现将成为这项工作的一部分，”Sasertveit 说。

Equinor 代表拥有 20% 股份的合作伙伴 DNO、Wellesley Petroleum 和 Petoro 运营 PL923。

Equinor 和 DNO 表示，该地区的下一个勘探井将是 Heisenberg，Equinor 表示预计该井的结果将于 3 月份出炉。Heisenberg 位于 PL827S，Equinor 持有该项目 51% 的权益，DNO 持有 49% 的权益。

Equinor reported on Feb. 9 a commercial oil and gas discovery of 17 MMboe to 47 MMboe of recoverable reserves at its Røver Sør prospect about 10 km from the Troll Field in the North Sea.

Because of its proximity to the Troll Field, Equinor’s Geir Sørtveit, senior vice president for exploration and production west operations, said the Røver Sør find is commercial.

The Transocean Spitsbergen rig drilled the discovery’s two wells in Norwegian North Sea license PL923 in about 350 m water depth.

According to license partner DNO, the discovery well and a follow-on appraisal sidetrack encountered hydrocarbons in three Jurassic Brent Group sandstone reservoirs.

The Norwegian Petroleum Directorate (NPD) said the primary exploration target for wildcat well 31/1-3 S was to prove petroleum in the Etive and Oseberg Formations in the Brent Group from the Middle Jurassic. The secondary exploration target was to prove petroleum in the Cook Formation from the Early Jurassic. Well 31/1-3 S was drilled to a vertical depth of 3,558 m below sea level and a measured depth of 3,568 m. The well was terminated in the Johansen Formation from the Early Jurassic.

Well 31/1-3 S encountered a gas column of about 80 m in the Tarbert and Ness Formations and an oil column of around 50 m in the Ness, Etive and Oseberg Formations. About 20 m was in sandstone layers with poor to moderate reservoir quality in the Tarbert and upper part of the Ness Formation, and around 65 m in sandstone layers with moderate to good reservoir quality in the Ness, Etive and Oseberg Formations. The Cook Formation was water-filled and contained sandstone with moderate to good reservoir quality.

The oil/water contact was encountered at a depth of 3,227 m below sea level in the Oseberg Formation.

The NPD said the objective of appraisal well 31/1-3 A was to delineate the discovery made in the Brent Group in well 31/1-3 S in January 2023. Well 31/1-3 A was drilled to a vertical depth of 3,368 m below sea level and a measured depth of 3,791 m. The well was terminated in the Drake Formation.

Well 31/1-3 A encountered an oil column of about 20 m in the Ness Formation, with sandstone layers of around 30 m with moderate to poor reservoir quality in the lower part of the Ness Formation. The oil/water contact was encountered at 3,211 m below sea level in the Ness Formation.

The wells were not formation-tested, the NPD said, but extensive data acquisition and sampling have been carried out.

This find is Equinor’s seventh in the area since fall 2019.

The previous six discoveries are Echino Sør in 2019, Swisher in 2020, Røver Nord and Blasto in 2021, and Toppand and Kveikje in 2022.

Equinor reported uncertainty around the size of the discoveries but said an average of the various estimates gives a total volume of around 350 MMboe, corresponding to a medium-sized Norwegian oil or gas field and the size of the Aasta Hansteen field in the Norwegian Sea.

“Equinor has started field development projects to coordinate the development of these discoveries by utilizing existing infrastructure in collaboration with our partners. This discovery will be part of this work,” Sørtveit said.

Equinor operates PL923 on behalf of partners DNO with 20%, Wellesley Petroleum and Petoro.

Equinor and DNO said the next exploration well in this area will be Heisenberg, and Equinor said it expects the results of that well to be ready in March. Heisenberg is in PL827S, which Equinor operates with 51% interest while DNO holds 49% interest.