Non-magnetic drill string member with non-magnetic hardfacing and method of making the same

摘要

A method for applying a non-magnetic, abrasive, wear-resistant hardfacing material to a surface of a drill string member includes providing a non-magnetic drill string member formed of a non-magnetic material, the drill string member having an outer surface. It also includes providing a non-magnetic hardfacing precursor material comprising a plurality of non-magnetic, sintered carbide pellets and a non-magnetic matrix material; heating a portion of the non-magnetic hardfacing precursor material to a temperature above the melting point of the matrix material to melt the matrix material. It further includes applying the molten non-magnetic matrix material and the plurality of non-magnetic, sintered carbide pellets to the exterior surface of the drill string member; and solidifying the molten non-magnetic matrix material to form a layer of a non-magnetic hardfacing material having a plurality of non-magnetic, sintered carbide pellets dispersed in the hardfacing material.

主权项

1. A method for applying a non-magnetic, abrasive, wear-resistant hardfacing material to a surface of a drill string member, comprising:
providing a non-magnetic drill string member formed of a non-magnetic material, the drill string member having an outer surface; disposing a non-magnetic intermediate material on the outer surface of the drill string member, the intermediate material having an outer surface away from the drill string member; providing a non-magnetic hardfacing precursor material comprising a plurality of non-magnetic, sintered carbide pellets and a non-magnetic matrix material; heating a portion of the non-magnetic hardfacing precursor material to a temperature above the melting point of the matrix material to melt the matrix material; applying the molten non-magnetic matrix material and the plurality of non-magnetic, sintered carbide pellets to the outer surface of the intermediate material; and solidifying the molten non-magnetic matrix material to form a layer of a non-magnetic hardfacing material having a plurality of non-magnetic, sintered carbide pellets dispersed in the hardfacing material and a heat affected zone proximate the outer surface of the intermediate material, the heat affected zone and the layer of the non-magnetic hardfacing material spaced from the outer surface of the drill string member.