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UpstreamOnline: Shell completes Onyx appraisal

By Upstream staff

Shell’s latest appraisal well on the Onyx gas discovery in the Norwegian Sea has confirmed the northern extent of the find.

The objective of the 6406/9-2 well was to “delimit the discovery”, said the Norwegian Petroleum Directorate. The well encountered gas/water contacts in Middle to Lower Jurassic rocks, thus confirming the northerly extent of the discovery.

The well was not formation tested, but extensive data collection and sampling were carried out, said the NPD. The collected data will be analysed to enhance the estimated size and production characteristics of the discovery.

The water depth at 6406/9-2 was 299 metres. It was the fourth well in production licence 255, and was drilled by the semi-submersible West Alpha, which will now proceed to the Kristin field to drill production well 6506/11-N-2 H.

Shell has previously indicated the 6406/9-1 (Onyx South West) discovery well has gas reserves of more than 100 million barrels of oil equivalent. and its sister websites,,,,, and are all owned by John Donovan. There is also a Wikipedia article.

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