Reverse nozzle drill bit
AssigneeNd Downhole Technology Ltd.
InventorsSadek Ben Lamin, Cody Graham
Life of this patent
Estimating the term…
Abstract
A drill bit design that employs reverse flow nozzles through which a portion of the drilling fluid is diverted. This reverse or upward flow of drilling fluid creates a condition by which the extraction of drilling sludge (combination of drilling fluid and drilling cuttings) in the cutting area of the drill bit is more efficient and has a greater amount of flow than designs of prior art. This increased flow has the effect of more efficiently removing damaging cuttings away from the drill cutters, lubricating the drill cutters more efficiently, and cooling the drill cutters more efficiently. The end result is increased drilling uptime, increased drilling speed, and less frequent drill bit catastrophic failures.
Claims19
A drill bit for drilling subterranean formations comprising:
- a. a drill bit body extending between a drill bit cutting face and a coupling, the drill bit body having an inner cavity and an outer surface, the inner cavity adapted to receive drilling fluid;
- b. a downward passage extending between the inner cavity and the drill bit cutting face, forming a downward nozzle;
- and
- c. a reverse passage extending between the inner cavity and the outer surface, forming a reverse nozzle,
- the reverse nozzle directed away from the drill bit cutting face at a reverse nozzle upward angle.
Dependencies are inferred from the claim text.