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US 2010/0071963 A1Published application
Staggered Compact Row on Same Land
AssigneeBaker Hughes Incorporated
InventorsFloyd C. Felderhoff, Robert M. Welch, Yolanda V. Morse
Life of this patent
Estimating the term…
Abstract
An earth boring drill bit comprising cones, each cone having a land on its mid portion with at least two rows of compacts that are staggered with respect to adjacent compacts on another row. The compacts of these two rows may also have the same size. The compacts of these two inner rows are closer to each other than to any other compacts on the cone.
Claims20
An earth boring bit comprising:
- a body;
- a leg depending from the body;
- a roller cone rotatingly affixed to the leg, the roller cone having a heel area with a heel row of contacts, an upper area with at least one nose compact;
- a first inner row of compacts between the heel row compacts and the nose compact;
- and
- a second inner row of compacts between the first inner row of compacts and the nose compact, wherein the distance between the centerline of the first and second inner row of compacts is exceeded by the distance between the centerline of any other two rows of compacts on the roller cone.
3 more elements
A roller cone bit comprising:
- a bit body having a leg extending therefrom;
- a roller cone rotatingly affixed to the leg, the roller cone having a heel area on an end of the cone, an upper area on an opposite end of the cone, a heel row of compacts disposed on the heel area and at least one compact on the upper area, and a roller cone axis extending between the heel and upper areas;
- and
- first and second inner rows between a row of the first and second compacts on the heel area and at least one compact on the upper area, the first and second inner rows being staggered relative to one another such that each compact of the first inner row is located between and outward from two compacts of the second inner row.
1 more element
An earth boring bit comprising:
- legs attached to a bit body;
- a first roller cone, a second roller cone, and a third roller cone each rotatingly attached to a leg;
- the first roller cone having a heel area with a heel row of contacts, an upper area with at least one nose compact;
- a first inner row of compacts between the heel row compacts and the nose compact;
- and
- a second inner row of compacts between the first inner row of compacts and the nose compact, wherein the distance between the centerline of the first and second inner row of compacts is exceeded by the distance between the centerline of any other two rows of compacts on the roller cone, a roller cone axis extending between the heel and nose compact, wherein the first and second inner rows are staggered relative to one another such that each compact of the first inner row is located between and outward from two compacts of the second inner row.
3 more elements
Dependencies are inferred from the claim text.