Patent · US Active

Method of repairing diamond rock bit

US8776341B2 · kind B2 · utility

2Cited by

7References

6Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

James L. Overstreet · Tomball, US
Kenneth E. Gilmore · Cleveland, US
James C. Green · Los Altos, US

Key dates

Filing date	May 19, 2008
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Dec 16, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/26
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Hardfacing is applied on gage surfaces of bit blades, the leading and trailing edges of bit blades, and on carbide inserts. The gage surfaces contains natural diamonds, synthetic diamonds, thermally stable polycrystalline (TSP) diamonds and carbide inserts, and the hardfacing is applied over at least a portion of them. As primary cutters on the bit blades are worn down during drilling, the gage surfaces of the bit blades are also worn down. A hardfacing is applied to the worn gage surfaces of the bit blades, thereby allowing the drill bit to drill deeper and longer without requiring replacement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.