INDEXING DRILL BIT

A drill bit may include a bit body and at least two cones assemblies including at least two drive cylinders having at least two cones. The at least two cone assemblies are mounted on the bit body. The drill bit may also include an indexing mechanism coupled to the bit body and configured to rotate a...

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Bibliographic Details
Main Authors HANSON, Joshua J, AZAR, Michael G, MARSHALL, Jonathan D, DOWNTON, Geoffrey C, DURAIRAJAN, Balasubramanian, SHEN, Yuelin, DAHLGREN, Scott S, HALL, David R
Format Patent
LanguageEnglish
French
Published 06.10.2016
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Summary:A drill bit may include a bit body and at least two cones assemblies including at least two drive cylinders having at least two cones. The at least two cone assemblies are mounted on the bit body. The drill bit may also include an indexing mechanism coupled to the bit body and configured to rotate and lock at least one drive cylinder. A method of operating the drill bit may include providing fluid to the drill bit, rotating the drill string to drill formation, moving the indexing mechanism an axial distance within a central chamber of the drill bit, rotating the at least two indexable structures as the indexing mechanism moves, and locking the at least two indexable structures. La présente invention concerne un trépan pouvant comprendre un corps de trépan et au moins deux ensembles cônes comprenant au moins deux vérins d'entraînement ayant au moins deux cônes. Lesdits ensembles cônes sont montés sur le corps de trépan. Le trépan peut également comprendre un mécanisme d'indexation couplé au corps de trépan et conçu pour tourner et verrouiller au moins un vérin d'entraînement. L'invention concerne également un procédé d'utilisation du trépan pouvant comprendre la fourniture d'un fluide au trépan, la rotation du train de tiges de forage pour forer une formation, le déplacement du mécanisme d'indexation d'une distance axiale à l'intérieur d'une chambre centrale du trépan, la rotation d'au moins deux structures indexables lors du déplacement du mécanisme d'indexation, et le verrouillage desdites structures indexables.
Bibliography:Application Number: WO2016US24397