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US 12,618,293 B2Granted
PDC bit element with retention feature
AssigneeTaurex Drill Bits, LLC
InventorsSamuel Barnett, Dustin Lyles, Warren Dyer, Blake Cameron Richnow
Life of this patent
Estimating the term…
Abstract
A drill bit includes a bit body, one or more blades forming part of the bit body, a plurality of cutter pockets defined in the one or more blades, each cutter pocket providing a floor and an orifice defined in the floor, and a plurality of cutters secured to the one or more blades at the plurality of cutter pockets. Each cutter includes a substrate, a diamond table secured to the substrate at an interface, and a retention feature extending from a bottom surface of the substrate and sized to be received within the orifice of a corresponding one of the plurality of cutter pockets.
Claims20
A drill bit, comprising:
- a bit body;
- one or more blades forming part of the bit body;
- a plurality of cutter pockets defined in the one or more blades, each cutter pocket providing a floor and an orifice defined in the floor;
- and
- a plurality of cutters secured with braze to the one or more blades at the plurality of cutter pockets, each cutter including:
- a substrate;
- a diamond table secured to the substrate at an interface;
- and
- a retention feature extending from a bottom surface of the substrate and providing a cylindrical sidewall parallel to a sidewall of the substrate, the retention feature being sized to be received within the orifice of a corresponding one of the plurality of cutter pockets,
- wherein the cylindrical sidewall extends at a constant first diameter between the bottom surface of the substrate and a bottom face of the retention feature, the bottom face being perpendicular to the cylindrical sidewall, and
- wherein the constant first diameter is smaller than a diameter of the sidewall of the substrate.
8 more elements
A method of securing a cutter to a cutter pocket of a drill bit, comprising
- receiving the cutter in the cutter pocket, the cutter including:
- a substrate;
- a diamond table secured to the substrate at an interface;
- and
- a retention feature extending from a bottom surface of the substrate and providing a cylindrical sidewall parallel to a sidewall of the substrate;
- centering the cutter within the cutter pocket by receiving the retention feature in an orifice defined in a floor of the cutter pocket;
- and
- attaching the cutter in the cutter pocket with braze while the retention feature is received within the orifice,
- wherein the cylindrical sidewall of the retention feature extends at a constant first diameter between the bottom surface of the substrate and a bottom face of the retention feature, the bottom face being perpendicular to the cylindrical sidewall of the retention feature, and
- wherein the constant first diameter is smaller than a diameter of the sidewall of the substrate.
7 more elements
A method of manufacturing a cutter for a drill bit, comprising:
- securing a diamond table to a first end of a substrate;
- and
- providing a retention feature on a second end of the substrate opposite the first end,
- wherein the retention feature comprises a body and a sidewall parallel to a sidewall of the substrate and extends at a constant first diameter between the bottom surface of the substrate and a bottom face of the retention feature, the bottom face being perpendicular to the sidewall of the retention feature,
- wherein the constant first diameter is smaller than a diameter of the sidewall of the substrate, the retention feature being sized to be received within an orifice defined in a floor of a cutter pocket of the drill bit,
- wherein the cutter is configured to be secured with braze to the cutter pocket along at least a portion of the sidewall of the substrate.
3 more elements
A method of retrofitting a drill bit, comprising
- forming an orifice defined in a floor of a cutter pocket;
- receiving a cutter in the cutter pocket, the cutter including:
- a substrate;
- a diamond table secured to the substrate at an interface;
- and
- a retention feature extending from a bottom surface of the substrate and providing a cylindrical sidewall parallel to a sidewall of the substrate,
- wherein the cylindrical sidewall of the retention feature exhibits a constant first diameter between the bottom surface of the substrate and a bottom face of the retention feature, the bottom face being perpendicular to the cylindrical sidewall,
- wherein the constant first diameter is smaller than a diameter of the sidewall of the substrate;
- centering the cutter within the cutter pocket by receiving the retention feature in the orifice, wherein the bottom surface contacts the floor when the retention feature is received within the orifice;
- and
- attaching the cutter in the cutter pocket with braze while the retention feature is received within the orifice.
8 more elements
Dependencies are inferred from the claim text.