Equinor Drills Dry Well in North Sea

Laxman Pai
Wednesday, July 17, 2019

Equinor Energy AS, operator of production licence 502, has completed the drilling of wildcat well 16/5-7.

Equinor’s objective was to investigate potential reservoir rocks in several levels: Upper Jurassic intra Draupne Fm sandstones, Upper Triassic Skagerrak Fm, Upper Permian Zechstein Gp and weathered/fractured basement rock.

The well was drilled about one kilometer west of the Johan Sverdrup oil field in the central part of the North Sea and 200 kilometers west of Stavanger.

The 16/5-7 well drilled about 110 m of basement rock, of which 77 m of weathered and fractured basement rock with poor to moderate reservoir properties. Traces of oil were encountered in the upper part of the basement about 19 meters.

However, it is impossible to determine whether the oil is producible or simply residual. No sedimentary rocks were encountered in other levels. Pending new information and interpretation of collected data, the preliminary classification is that the well is dry.

The well was not formation-tested, but extensive volumes of data have been acquired and samples have been taken.

The well has yielded important information about the potential for reservoir properties in the basement rock, as well as pressure communication in the area.

This is the second exploration well in production licence 502. The licence was awarded in APA 2008.

The well was drilled to a vertical depth of 1988 meters below the sea surface, and was terminated in the basement rock.

Water depth at the site is 105 meters. The well will now be permanently plugged and abandoned.

The well was drilled by the Transocean Spitsbergen drilling facility, which will now proceed to the shipyard before well operations start up on the Snorre field in the northern part of the North Sea.

Categories: Drilling North Sea Well Operations Wells

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