Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use

摘要

One aspect of the instant disclosure relates to a subterranean drilling assembly comprising a subterranean drill bit and a sub apparatus coupled to the drill bit. Further, the sub apparatus may include at least one cooling system configured to cool at least a portion of the drill bit. For example, the sub apparatus may include at least one cooling system comprising a plurality of refrigeration coils or at least one thermoelectric device. In another embodiment a subterranean drill bit may include at least one cooling system positioned at least partially within the subterranean drill bit. Also, a sub apparatus or subterranean drill bit may be configured to cool drilling fluid communicated through at least one bore of a subterranean drill bit and avoiding cooling drilling fluid communicated through at least another bore of the subterranean drill bit. Methods of operating a subterranean drill bit are disclosed.

主权项

1. A subterranean drill bit comprising:
a body including a leading face and a coupling portion; at least one cutting element coupled with the bit body; at least one cooling system configured to cool at least a portion of the subterranean drill bit, the at least one cooling system including at least one heat transfer apparatus contained entirely within the body of the drill bit body and extending from a first location proximate the coupling portion of the drill bit to a second location proximate the at least one cutting element, wherein the at least one heat transfer apparatus comprises a material exhibiting a higher thermal conductivity than that of a material of the drill bit body.