Multilateral wells increase reserves, lower costs on Troll Olje field

Norsk Hydro AS has employed multilateral well completions in the Troll Olje field to increase the total wellbore drainage area from the existing subsea template structures, rather than add additional templates.The company expects the multilateral well program to total 28 wells by 2003 and contribute 88 million bbl of additional oil reserves.This compares with the more expensive alternative of adding four wellhead templates or 16 single-lateral well slots, which the company predicts would drain only 50 million bbl.The Troll Olje field lies 100 km northwest of Bergen in the Norwegian Sector of the North Sea in 315-340 m water depth. Click here to enlarge imageWithin the Troll gas field, No...

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