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Gas and oil discovery northeast of the Gjøa field in the North Sea – 36/7-4

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Oilfield Technology,


The well was drilled six km northeast of the Gjøa field and 55 km southwest of Fløro.

The objective of the well was to prove petroleum in Early Cretaceous reservoir rocks (Agat formation).

The well encountered an approx. 50 m gas column and 60 m oil column in the Agat formation. Reservoir quality ranges from very good in the top section to good in the lower section.

Preliminary estimation of the size of the discovery is between 4.3 – 11 million m3 of recoverable oil equivalents.

The well was formation-tested. The maximum production rate was 1.3 million m3 gas per flow day through a 76/64 in. nozzle opening. The gas/oil ratio is approx. 16 000 m3/m3. The formation test generally showed very good production and flow properties. Extensive data and samples were collected.

The licensees will consider a tie-in of the discovery to existing infrastructure on the Gjøa field.

36/7-4 is the first exploration well in production licence 636. The licence was awarded in APA 2011.

The well was drilled to a vertical depth of 2702 m below the sea surface, and was terminated in the Åsgard formation in the Lower Cretaceous.

Water depth at the site is 349 m. The well will now be permanently plugged and abandoned.

The well was drilled with the Transocean Arctic drilling facility.


Adapted from a press release by Louise Mulhall

Read the article online at: https://www.oilfieldtechnology.com/offshore-and-subsea/16092016/gas-and-oil-discovery-northeast-of-the-gja-field-in-the-north-sea-367-4/

 

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