Mounting means for cutting elements in drag type rotary drill bit

Patent · Tue Jul 28 04:00:00 EDT 1987

OSTI ID:6184904

Daly, J E; Schumacher, P W

A drag type rotary drill bit is described having a bit body defining an exterior face; at least one unitary integral hard metal holder secured directly to the bit body, the holder is elongate and has a projecting end portion extending from the face of the bit body; and polycrystalline diamond compact cutting elements mounted directly on the projecting end portion of the holder. Each cutting element has a cutting edge projecting from the holder for engaging in cutting relation, a formation to be cut, each of the cutting edges of cutting elements for the holder are in a cutting plane extending generally radially of the axis of rotation of the bit. The holder provides reinforcement and rigidity to the cutting elements in resisting stresses resulting from the cutting operation.

• Assignee: Reed Tool Co., Houston, TX
• Patent Number(s): US 4682663
• OSTI ID: 6184904
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CARBON
CRYSTALS
DESIGN
DIAMONDS
DRAG
DRILL BITS
DRILLING
DRILLING EQUIPMENT
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
FASTENERS
MINERALS
MOTION
NATURAL GAS WELLS
NONMETALS
OIL WELLS
OPERATION
POLYCRYSTALS
ROTARY DRILLING
ROTATION
STRESSES
WELL DRILLING
WELLS