Drilling out casing bits with other casing bits

Details Drilling out casing bits with other casing bits Drilling out casing bits with other casing bits

E - Fixed Constructions

21

B

E21B 10/43 (2006.01) E21B 10/567 (2006.01) E21B 17/14 (2006.01)

Patent

CA 2734977

The drilling of a casing bit and any other equipment in the casing with another casing bit where at least two casing bits of different diameter and having associated casing sections may be assembled to form a drilling assembly for drilling subterranean formations, the at least two casing bits and casing sections are arranged in a telescoping relationship.

Le forage d'un élément de tubage et d'autres équipements situés dans le tubage avec un autre trépan de tubage où au moins deux éléments trépans de tubage de diamètre différent et présentant des sections de tubage associées peuvent être assemblés pour former un ensemble de forage de formations souterraines, les au moins deux trépans de forage et les sections de tubage étant disposés en relation télescopique.

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