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US 7,681,670 B2Granted
Two-cone drill bit
AssigneeSmith International, Inc.
InventorsPrabhakaran K. Centala, James L. Larsen, Mohammed Boudrare
Life of this patent
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Abstract
A two-cone drill bit with a hydraulic arrangement that can be used for one or more of the following: cleaning roller cones, impinging on a hole bottom, or inducing a helical flow field. A two-cone drill bit having a bit body formed from two leg sections and two spacing members; methods of manufacturing a two-cone drill bit; and methods of improving hydraulics of a two-cone drill bit are disclosed.
Claims31
A two-cone drill bit for drilling a well bore, the two-cone drill bit comprising:
- a bit body comprising,
- a connection adapted to connect to a drill string,
- two leg sections each having a leg formed thereon and disposed between about 145 degrees and about 166 degrees from each other,
- a fluid plenum, and
- two spacing members disposed on opposite sides from each other between each of the two leg sections, wherein each of the two spacing members comprise two openings therein, each forming a conduit for channeling a fluid from the fluid plenum to outside the bit body;
- and
- a roller cone rotatably mounted to each leg;
- wherein the bit body comprises at least two components other than the two legs extending to bit gage.
5 more elements
Dependencies are inferred from the claim text.