Drag blade bit with diamond cutting elements

Patent · Tue Feb 19 04:00:00 EST 1985

OSTI ID:5637648

Radtke, R P; Morris, W V

A drag blade bit for connection on a drill string has a hollow body on which there are welded a plurality of cutting or drilling blades. The blades extend longitudinally and radially of the bit body and terminate in relatively flat, radially extending cutting edges. A plurality of cutters are positioned in and spaced along the cutting edges and consists of cylindrical sintered carbide inserts with polycrystalline diamond cutting elements mounted thereon. Hardfacing is provided on the cutting edges between the cutters and on the other surfaces of the blades and the bit body subject to abrasive wear. One or more nozzles are positioned in passages from the interior of the bit body for directing flow of drilling fluid for flushing cuttings from the well bore and for cooling the bit.

• Assignee: Strata Bit Corporation
• Patent Number(s): US 4499958
• OSTI ID: 5637648
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CARBON
CUTTINGS REMOVAL
DIAMONDS
DRILL BITS
DRILL PIPES
DRILLING EQUIPMENT
DRILLING FLUIDS
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
FABRICATION
FLUIDS
HARDENING
JOINING
MECHANICAL PROPERTIES
MINERALS
NONMETALS
PIPES
REMOVAL
WEAR RESISTANCE
WELDING