Degradable whipstock apparatus and methods of use

E - Fixed Constructions – 21 – B

Patent

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E21B 7/06 (2006.01)

Patent

CA 2705321

Whipstocks and deflectors comprising a degradable composition, and methods of using same are described. In one embodiment the degradable composition consists essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Methods of using degradable whipstocks in oilfield operations are also described. Image

L'invention porte sur des sifflets déviateurs et des déflecteurs comprenant une composition dégradable, et sur leurs procédés d'utilisation. Dans un mode de réalisation, la composition dégradable est essentiellement composée d'un ou plusieurs métaux réactifs dans une proportion majeure, et d'un ou plusieurs éléments d'alliage en proportion mineure, à condition que la composition soit de haute résistance, réactive de façon contrôlée, et dégradable sous des conditions définies. L'invention porte également sur des procédés d'utilisation de sifflets déviateurs dégradables dans des opérations sur champ pétrolifères.

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