Mono-diameter wellbore casing

E - Fixed Constructions – 21 – B

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Details

E21B 19/16 (2006.01) E21B 33/14 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2462756

A method and system for creating a mono-diameter wellbore casing, whereby a tubular liner (210) is radially expanded into contact with a tubular casing (115) by a method of pressurizing a portion of the tubular liner (210) below a first expansion cone (805) and extruding the liner off the first expansion cone (805). The overlap between the liner and casing is then expanded and the portion of the tubular that does not overlap the casing is expanded using a second expansion cone.

L'invention porte sur un procédé et sur un système visant à créer un tubage de puits de forage monodiamètre. Le procédé consiste à dilater radialement un revêtement interne tubulaire (210) de sorte qu'il vienne en contact avec un tubage tubulaire (115) selon un procédé de pressurisation d'une partie du revêtement interne tubulaire (210) se trouvant au-dessous d'un premier cône d'expansion (805) et à extruder de ce cône d'expansion (805) le revêtement interne; dilater ensuite radialement le chevauchement entre le revêtement interne et le tubage, ainsi que la partie du revêtement interne tubulaire qui ne se chevauche pas avec le tubage existant du puits de forage, au moyen d'un second cône d'expansion.

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