Wintershall Dea (Harbour Energy) 已在挪威海克里斯蒂安松以北 270 公里处的 6507/4-5 S 评价井中发现天然气。

初步估计 Lange 组 (“abina”) 的发现规模为 270 万至 620 万标准立方米 (Sm3) 可采油当量。这相当于约 1700 万至 3900 万桶油当量。

在 Lysing 组 (“driana”)，该井证实发现的规模为 400 万至 700 万标准立方米可采油当量，相当于约 2800 万至 4300 万桶油当量。

该井由 Transocean Norge 钻井平台钻探。Wintershall

Dea (Harbour Energy) 是生产许可证 211 CS 的运营商，而 Petoro、Aker BP 和 Orlen 是其他许可证持有者。许可证持有者正在考虑将这些发现与该地区现有的基础设施联系起来。

地质信息

在钻探评估井 6507/4-5 S 之前，运营商对主要勘探目标的资源估计为 300-900 万标准立方米可采油当量，而对次要勘探目标的资源估计为 400-700 万标准立方米可采油当量。

该井的主要目标是从 Lange 组（“Babina”）的预探井 6507/4-2 S 中划定天然气/凝析油发现，并进行地层测试。

次要目标是圈定 Lysing 组（“淎driana”）中的天然气/凝析油发现（6507/4-2 S）。

在主要勘探目标中，该井在总厚度 17 米的砂岩中发现了 41 米高的气柱，储层质量较差至中等。未发现气/水接触面。该井还在中下 Lange 组发现了两层砂岩，厚度分别约为 4 米和 21 米，储层质量较差，但含有碳氢化合物痕迹。

在次要勘探目标中，该井在总厚度 23 米的砂岩中发现了 30 米高的气柱，储层质量良好至非常好。气/水接触面位于海平面以下 2897 米处。已进行了大量数据采集和采样。

在 Lange 组上部成功进行了生产测试。通过 28/64 英寸喷嘴开口，最大产量为每流量日 530,000 Sm3 气体和 80 Sm3 凝析油。

评估井钻至垂直深度 4111 米，测量深度为海平面以下 4150 米，终止于下白垩纪 Lange 组。现场

水深为 455 米。评估井 6507/4-5 S 已被永久封堵并废弃。

Wintershall Dea (Harbour Energy) has proven gas in appraisal well 6507/4-5 S in the Norwegian Sea, 270 kilometres north of Kristiansund.

The preliminary estimate of the size of the discovery in the Lange Formation (“Sabina”) is between 2.7 and 6.2 million standard cubic metres (Sm3) of recoverable oil equivalent. This corresponds to about 17-39 million barrels of oil equivalent.

In the Lysing Formation (“Adriana”), the well confirms the size of the discovery at 4-7 million Sm3 of recoverable oil equivalent, which corresponds to around 28-43 million barrels of oil equivalent.

The well was drilled by the Transocean Norge rig.

Wintershall Dea (Harbour Energy) is the operator of production licence 211 CS, while Petoro, Aker BP and Orlen are the other licensees. The licensees are considering tying the discoveries back to existing infrastructure in the area.

Geological information

Before appraisal well 6507/4-5 S was drilled, the operator’s resource estimate for the primary exploration target was 3-9 million Sm3 of recoverable oil equivalent, while the resource estimate for the secondary exploration target was 4-7 million Sm3 of recoverable oil equivalent.

The primary objective of the well was to delineate the gas/condensate discovery from wildcat well 6507/4-2 S in the Lange Formation (“Sabina”), and to carry out formation testing.

The secondary objective was to delineate the gas/condensate discovery (6507/4-2 S) in the Lysing Formation (“Adriana”).

In the primary exploration target, the well encountered a 41-metre gas column in sandstone rocks totalling 17 metres, with poor to moderate reservoir quality. The gas/water contact was not encountered. The well also encountered two sandstone layers in the Middle and Lower Lange Formation of around 4 and 21 metres, with poor reservoir quality but with traces of hydrocarbons.

In the secondary exploration target, the well encountered a 30-metre gas column in sandstone rocks totalling 23 metres with good to very good reservoir quality. The gas/water contact was encountered at 2897 metres below sea level. Extensive data acquisition and sampling have been carried out.

A successful production test was conducted in the upper part of the Lange Formation. The maximum production rate was 530,000 Sm3 of gas and 80 Sm3 of condensate per flow day through a 28/64-inch nozzle opening.

The appraisal well was drilled to a vertical depth of 4111 metres and a measured depth of 4150 metres below sea level, and was terminated in the Lange Formation in the Lower Cretaceous.

Water depth at the site is 455 metres. Appraisal well 6507/4-5 S has been permanently plugged and abandoned.