Drill bit with a dynamic metal seal
AssigneeBaker Hughes Incorporated
InventorsChih Lin, Aaron J. Dick, Jon D. Schroder, Anton F. Zahradnik, Alejandro Flores, Robert D. Bradshaw
Life of this patent
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Abstract
In one aspect, a drill bit is disclosed that in one embodiment may include a bit body, a rotating cutter on the bit body, and a metallic seal between the bit body and the rotating cutter that includes a first seal member, a second seal member having a first end in sealing contact with the first seal member, a second end fixed relative to the first end and a bias member between the first end and the second end that adjusts the load on the first seal member in response to external load applied on the drill bit.
Claims16
A drill bit comprising:
- a stationary body;
- a rotating member;
- a first seal surface;
- and
- a non-elastomeric seal member exposed to a lubricant, the non-elastomeric seal member including a first end having a second seal surface that is in contact with the first seal surface, a second end that is fixed and a bias member between the first end and the second end, wherein the non-elastomeric seal member comprises a one-piece member constructed using a single metallic material.
A drill bit comprising:
- a bit body;
- a rotating cutter on the bit body;
- and
- a metallic seal between the bit body and the rotating cutter that includes:
- a first seal member;
- a second seal member having a first end in sealing contact with the first seal member, a second end and a bias member between the first end and the second end that adjusts a load on the first seal member in response to a load applied on the drill bit wherein the second seal member comprises a one-piece member constructed using a single metallic material.
A method of making a drill bit, the method comprising:
- providing a drill bit having a bit body and a rotating member;
- and providing a seal between the bit body and the rotating member, the seal including:
- a first seal member;
- and
- a second seal member having a first end in sealing contact with the first seal member, a second end fixed relative to the first end and a bias member between the first end and the second end that adjusts a load on the first seal member in response to an external load applied on the drill bit, wherein providing the seal comprises providing the second seal member wherein the second seal member comprises a one-piece member constructed using a single metallic material.
A drill bit comprising:
- a stationary body;
- a rotating member;
- and
- a seal between the rotating member and the stationary member that includes a non-elastomeric seal member to retain a lubricant in a sealed area, the non-elastomeric seal member including moveable end and a fixed end and a bias member between the movable end and the fixed end, wherein the non-elastomeric seal member comprises a one-piece member constructed using a single metallic material.
Dependencies are inferred from the claim text.