🛠️ Invention or technique

Hughes rotary cone drill bit

Broca de conos giratorios de Hughes

Date
1909 · confidence high
Place
Houston, Texas, United States
Credited to
Howard R. Hughes Sr. and Walter Sharp
Field
Matter & energy

What it is

A bit with two toothed cones that roll over the bottom of the hole and crush hard rock, opening up formations previously unreachable. It allowed drilling to deeper oil.

Reed's tricone bit (1933) later replaced the two-cone bit.

What it led to

  • drilling in hard rock and at greater depth
  • the fortune of the Hughes Tool Company
  • the tricone bit as the industry standard
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Sources✓ verified 2026-11-04