Wellbore reaming tool having fixed mounted gouging cutters
AssigneeShear Bits, Ltd.
InventorsJohn James Herman, Carl M. Hoffmaster
Life of this patent
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Abstract
A reaming tool includes a reaming tool body configured to be coupled within a drill string or a string of drilling tools. A plurality of reaming blocks is attached to the reaming tool body at circumferentially spaced apart locations. At least one reaming block comprises at least a first row of gouging cutters and a second row of gouging cutters. The gouging cutters in the first row define a first profile. The gouging cutters in the second row define a second profile. The first row is rotationally ahead of the second row. The first profile at any longitudinal position along the at least one reaming block defines a larger reaming diameter than the second profile.
Claims18
A reaming tool, comprising:
- a reaming tool body configured to be coupled within a drill string or a string of drilling tools;
- a plurality of reaming blocks attached to the reaming tool body at circumferentially spaced apart locations;
- and
- wherein at least one reaming block comprises at least a first row of gouging cutters having non-planar cutting surfaces and a second row of gouging cutters having non planar cutting surfaces, the gouging cutters in the first row defining a first profile, the gouging cutters in the second row defining a second profile, wherein the first row is rotationally ahead of the second row, and wherein the first profile at any longitudinal position along the at least one reaming block defines a larger reaming diameter than the second profile at the same longitudinal position.
Dependencies are inferred from the claim text.