Drill bit having regenerative nanofilms
AssigneeHalliburton Energy Services, Inc.
InventorsGarrett T. Olsen, Jay Stuart Bird, Ping C. Sui
Life of this patent
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Abstract
A system of repairing and protecting a surface of a drill bit includes forming a drill bit body that includes a magnetized material or is otherwise magnetizable. The drill bit includes at least one cutting element and is operable to generate a magnetic field. A drilling fluid that includes magnetizable, regenerative particles is circulated through a drill string and wellbore in which the drill bit is deployed. The magnetic field attracts the regenerative particles to the surface of the drill bit body to occupy cracks and chips formed in the surface of the drill bit body, and to form a protective layer of the regenerative particles over the surface of the drill bit body.
Claims20
A wellbore formation system comprising:
- a drill bit having at least one cutting element and a drill bit body comprising a magnetized material that generates a magnetic field extending to an exterior of the drill bit body;
- a drilling fluid comprising magnetizable regenerative particles;
- and
- a fluid flow path that guides the drilling fluid through a drill string and over a surface of the drill bit.
A method of preserving a drill bit surface, the method comprising:
- providing a drill bit having a magnetized drill bit body that generates a magnetic field extending to an exterior of the drill bit body;
- operating the drill bit to form a wellbore;
- and
- circulating a fluid over a surface of the drill bit body to regenerate a surface of the drill bit body, the fluid comprising regenerative materials that are magnetically attracted to the magnetized drill bit body.
A method of manufacturing a drill bit body comprising:
- placing a particulate phase and a binder material into a mold, the particulate phase including tungsten carbide and magnetizable particles;
- and
- sintering the particulate phase and the binder to form a drill bit body.
Dependencies are inferred from the claim text.