BG orders subsea equipment for Knarr, offshore Norway

By OGJ editors

BG Norge AS let a $135 million contract to FMC Technologies Inc. for the manufacture and supply of subsea production equipment for development of Knarr oil and gas field on Block 34/3 in the North Tapen area, offshore Norway.

Knarr field, formerly known as Jordbaer, lies in 1,320 ft of water.

The contract includes the supply of three subsea production trees and three water injection trees. FMC also will provide six subsea control modules, five wellheads, two manifolds, and other related equipment and controls.

The subsea wells will produce to a leased floating production, storage, and offloading vessel. BG Norge expects first production in 2014.

According to Norwegian Petroleum Directorate records, the discovery well, 31/3-1S was drilled to 4,081 m true vertical depth (4,221 m measured depth) and completed in September 2008. The well encountered hydrocarbons in the Early Jurassic Cook formation.

The well on a drillstem test flowed from the Cook formation, at 3,750.2-3832.5 m TVD, 42,789 cu m/day of gas and 1,239 cu m/day of oil through a 24/64-in. choke. The oil had a 0.798 g/cc density and gas gravity was 0.795 (air=1) with 2 ppm hydrogen sulfide and 2% carbon dioxide.

BG competed an appraisal well, 34/3-1A, in October 2008. This well encountered the Cook formation at 3,833 m TVD. From the pressure gradient, the oil-water contact was estimated at about 3,886 m TVD.

The field's recoverable resources are 7.97 million cu m of oil, 240 million cu m of gas, and 0.56 million tonnes of NGL, according to NPD records.

Operator BG holds a 45% interest in the field. Its partners are Idemitsu Petroleum Norge AS 25%, Wintershall Norge ASA 20%, and RWE Dea Norge AS 10%.

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