Total discovers up to 50BCM of natural gas in the Barents Sea

Source: Norwegian Petroleum Directorate

French major Total (NYSE:TOT) completed the drilling of wildcat well 7225/3-1, proving natural gas on Production License 535 in the Barents Sea, about 250 kilometers north of Melkoya. 

The primary exploration target for the well was to prove petroleum in Triassic reservoir rocks (Snadd and Kobbe formations). The secondary exploration target was to prove petroleum in the Middle Jurassic (Stø formation), Triassic (Havert formation) and Permian (Bjarmeland formation). 

Gas was proven both in intervals from the Jurassic and the Triassic: in the Kobbe formation with a 400-meter interval in rocks of varying reservoir quality, and in the Havert formation in two intervals of 80 and 90 meters, respectively, in poorly developed reservoir rocks. Gas was also encountered in the Stø and Snadd formations.
Preliminary estimates place the size of the discovery between 10 and 50 billion standard cubic meters of recoverable gas. 

A successful formation test has been carried out in the upper part of the Kobbe formation. The maximum production rate was 180,000 cubic meters gas per flow day through a 44/64-inch nozzle. The gas contains only small amounts of CO2, H2S and N2. The results from the well will be included in the ongoing evaluation of Norvarg to establish the size and extent of the gas discoveries. 

The first exploration well in Production License 535, the discovery well was drilled by the West Phoenix to a vertical depth of 4,150 meters in waters measuring 376 meters deep. The well was terminated in the Ørn formation in Permian rocks and will now be permanently plugged and abandoned. 

Total serves as the operator of the license with 40 percent interest. Project partners include Rocksource, Det norske oljeselskap and North Energy, each with 20 percent.

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