Sigve Hovda Norsk Hydro AS Bergen, Norway A systematic approach, including better planning and performance evaluation, improved the horizontal drilling efficiency of a multiwell program in the Oseberg field in the North Sea. The field, operated by Norsk Hydro AS, is one of the largest oil fields in the North Sea and has total recoverable reserves of 1.6 billion bbl. For the past 2 years, Norsk Hydro has had a goal to increase the recoverable reserves by 10%, primarily through horizontal drilling. The horizontal drilling program in the Oseberg field is one of the most comprehensive horizontal drilling programs in the North...

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