Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
AssigneeSmith International, Inc.
InventorsSike Xia, Yong Zhou
Life of this patent
Estimating the term…
Abstract
A hardfacing composition comprising a carbide phase and a matrix phase, The carbide phase comprises mono-tungsten carbide in a quantity of greater than 50 percent by weight, based on the total weight of the carbide phase. The matrix phase comprises iron and nickel. The nickel is present in a quantity in the range of from 0.5 to 20 percent by weight, based on the total weight of the matrix phase. Also included are methods of applying such hardfacing compositions to a downhole tool and downhole tools having such hardfacing compositions applied thereon.
Claims25
A hardfacing composition comprising:
- A carbide phase comprising mono-tungsten carbide in a quantity of greater than 50% by weight, based on the total weight of the carbide phase;
- and
- A matrix phase comprising iron and nickel, wherein nickel is present in a quantity in the range of from 0.5 to 20% by weight, based on the total weight of the matrix phase.
A downhole tool comprising a tool body and a hardfacing composition applied to a surface thereon, wherein the hardfacing composition comprises:
- A carbide phase comprising mono-tungsten carbide in a quantity of greater than 50% by weight, based on the total weight of the carbide phase;
- and
- A matrix phase comprising iron and nickel, wherein nickel is present in a quantity in the range of from 0.5 to 20% by weight, based on the total weight of the matrix phase.
A method of applying a hardfacing composition to a downhole tool comprising:
- Providing a hardfacing composition comprising:
- A carbide phase comprising mono-tungsten carbide in a quantity of greater than 50% by weight, based on the total weight of the carbide phase;
- and
- A matrix phase comprising iron and nickel, wherein nickel is present in a quantity in the range of from 0.5 to 20% by weight, based on the total weight of the matrix phase;
- and
- Applying the hardfacing composition to a surface of the downhole tool.
Dependencies are inferred from the claim text.