CPC E21B 10/5735 (2013.01) [B23K 1/0008 (2013.01); B23K 1/20 (2013.01); C23C 30/005 (2013.01); B23K 2101/002 (2018.08); E21B 10/55 (2013.01)] | 13 Claims |
1. A method of preventing or reducing cutter loss in a steel body polycrystalline diamond compact (PDC) drilling tool, the method comprising:
applying a hardfacing layer on a surface of a PDC cutter pocket to form a covered PDC cutter pocket, the hardfacing layer comprising a metal binder and coated tungsten carbide particles; and
bonding a PDC cutter into the covered PDC cutter pocket with a brazing material,
wherein the coated tungsten carbide particles comprise tungsten carbide particles and a coating comprising tungsten metal, titanium metal, a tungsten alloy, a titanium alloy, or mixtures thereof,
wherein the coating has a thickness of 10 to 50 nm.
|