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US 10,472,896 B2Granted
Downhole tool and method of manufacturing a tool
AssigneeEsco Group LLC
InventorsCalvin William Collins, Jon V. Owen, Alfred H. Skinner, Neal Alan Bowden, Ryan J. Nelson
Life of this patent
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Abstract
Producing a drag bit includes creating a mold corresponding to the surface of the bit and inserting a core in the mold corresponding to the plenum of the bit. A preliminary shaped bit is cast in the mold. Excess material is removed from the casting to produce a final shaped bit.
Claims7
A steel casting for a tool to drill a borehole includes:
- a body;
- blades extending from the body;
- and
- a plenum in the body;
- wherein the blades are machined to a final dimension and the plenum includes extensions to limit the mass of the body at the root of each blade.
2 more elements
Dependencies are inferred from the claim text.