US 9,435,158 B2 · Use of tungsten carbide tube rod to hard-face PDC matrix

Abstract

A hardfaced infiltrated matrix downhole tool and a method for hardfacing such items. The hardfaced infiltrated matrix downhole tool includes a body, an intermediate base coat coupled to at least a portion of the surface of the body, and a hardfacing material coupled to at least a portion of the intermediate base coat. The body is composed of at least a carbide material and an infiltrating binder material. The intermediate base coat bonds to the surface of the body and to the hardfacing material. The method includes obtaining an infiltrated matrix downhole tool, applying and bonding the intermediate base coat to at least a portion of the surface of the infiltrated matrix downhole tool, and applying and bonding the hardfacing material to at least a portion of the intermediate base coat.

Claims17

Dependent claims

A hardfaced infiltrated matrix downhole tool, comprising:

a body comprising a carbide material and an infiltrating binder material of copper or copper alloy;
a blade formed integrally with the body, made from the same materials as the body, and extending from about one end of the body towards a second end of the body, the blade comprising a leading edge, a trailing edge, and a face extending from the leading edge to the trailing edge;
at least one cutter mounted on the face;
an intermediate base coat coupled to at least a portion of at least one of the leading edge and the face and being a nickel-chromium alloy including one or more reducing agents;
and
a hardfacing material coupled to at least a portion of the intermediate base coat,
wherein the intermediate base coat bonds to the blade and the hardfacing material.

4 more elements

Dependencies are inferred from the claim text.

Use of tungsten carbide tube rod to hard-face PDC matrix

Life of this patent

Use of tungsten carbide tube rod to hard-face PDC matrix

Life of this patent

Abstract

Claims17