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US 12,704,026 B2Granted
Drilling apparatus, drill bit, and method for testing drill bit performance
AssigneeGeorgia Tech Research Corporation
InventorsSheng Dai, Yumeng Zhao
Life of this patent
Estimating the term…
Abstract
A drilling apparatus, drill bit and method for testing drill bit performance. The drilling apparatus and method include a vertical load mechanism that is configured to move a sample container holding a substrate material downwardly at a constant displacement rate toward a drill bit component, while a rotary motion assembly rotates the drill bit component. The drill bit includes a plurality of cutters each having a 0 degree rake angle and curved cutting face.
Claims16
A drilling apparatus for testing drill bit performance, comprising:
- a frame;
- a drill bit component supported by the frame;
- a vertical load mechanism supported by the frame above the drill bit component;
- a sample container for holding a substrate material, the sample container being coupled to the vertical load mechanism;
- and
- a rotary motion assembly operatively coupled to the drill bit component, the rotary motion assembly being configured to rotate the drill bit component,
- wherein the vertical load mechanism is configured to move the sample container downwardly at a constant displacement rate with respect to the frame and toward the drill bit component, while the rotary motion assembly rotates the drill bit component.
4 more elements
A method of testing drill bit performance, comprising:
- moving a substrate material vertically downward toward a drill bit component at a constant displacement rate;
- rotating the drill bit component while moving the substrate material vertically downward toward the drill bit component until the drill bit component penetrates the substrate material;
- then recording data from the drill bit component penetrating the substrate material including weight-on-bit, cutting depth per revolution, and reactive torque;
- and
- analyzing a cutting performance of the drill bit component based on the recorded data using a Detournay model to decipher cutting and frictional contact response of the drill bit component.
2 more elements
Dependencies are inferred from the claim text.