Earth-boring tools and components thereof including erosion resistant extensions, and methods of forming such tools and components
AssigneeBaker Hughes Incorporated
InventorJames Andy Oxford
Life of this patent
Estimating the term…
Abstract
Earth-boring drill bits include a bit body, an erosion-resistant extension, and a shank. The erosion-resistant extension includes a generally tubular body, and an erosion-resistant material lining the generally tubular body within a fluid passageway. The erosion-resistant material lining the generally tubular body within the fluid passageway exhibits an erosion resistance greater than an erosion resistance exhibited by a material of the generally tubular body. Methods of forming an erosion-resistant extension include lining at least a portion of a wall of a generally tubular body within a fluid passageway extending through the generally tubular body with an erosion-resistant material.
Claims20
An erosion-resistant extension for an earth-boring rotary drill bit, the erosion-resistant extension comprising:
- a generally tubular body having a shape defining a fluid passageway extending through the generally tubular body, the generally tubular body comprising:
- an outer surface;
- an inner surface;
- a first end configured for attachment to a bit body of an earth-boring rotary drill bit;
- and an opposite, second end configured for attachment to a shank;
- and
- an erosion-resistant material lining the generally tubular body within the fluid passageway, the erosion-resistant material exhibiting an erosion resistance greater than an erosion resistance exhibited by a material of the generally tubular body.
An earth-boring rotary drill bit comprising:
- a bit body;
- at least one cutting element on the bit body;
- an extension comprising:
- a generally tubular body having a shape defining a fluid passageway extending through the generally tubular body between a first end of the generally tubular body and an opposite, second end of the generally tubular body, the first end of the generally tubular body coupled to the bit body;
- and
- and an erosion-resistant material lining at least a portion of the generally tubular body within the fluid passageway, the erosion-resistant material exhibiting an erosion resistance greater than an erosion resistance exhibited by a material of the generally tubular body;
- and
- a shank coupled to the opposite, second end of the generally tubular body of the erosion-resistant extension, the shank configured for attachment to a drill string.
A method of forming an earth-boring rotary drill bit, comprising:
- selecting an erosion-resistant material to exhibit an erosion resistance greater than an erosion resistance exhibited by a material of a generally tubular body;
- lining at least a portion of a wall of the generally tubular body within a fluid passageway extending through the generally tubular body with the selected erosion-resistant material;
- coupling a first end of the generally tubular body to an earth-boring rotary drill bit;
- and
- coupling a shank to an opposite, second end of the generally tubular body.
Dependencies are inferred from the claim text.