Feste Schneidbohrmeissel und Schneidelemente mit Sekundären Schneidkanten dafür

Details

Veröffentlichungs-Nr.

EP4752323

Anmeldetag

19. Mai 2023

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

IPC

E21B10/567

Abstract

A cutter element for a fixed cutter drill bit configured to drill a borehole in a subterranean formation includes a base having a central axis, a first end, a second end, and a radially outer cylindrical surface extending axially from the first end to the second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base. The cutting layer includes a stepped cutting face distal the base and a radially outer cylindrical surface extending axially from the cutting face to the radially outer cylindrical surface of the base. The radially outer cylindrical surface of the cutting layer is contiguous with the radially outer cylindrical surface of the base. The stepped cutting face includes a first step, a second step axially spaced from the first step, and a riser axially positioned between the first step and the second step. The first step is axially positioned between the riser and the base.

Anmelder

Firma

National Oilwell Varco, L.P.

Land

🇺🇸 USA