Diamond drill bit with varied cutting elements
An earth boring bit is described which comprises in combination: a body having one end that includes means for connection to a drill string member; matrix material formed on the opposite end to have alternate, radially extending lands extending to an outermost gage portion and radially extending water courses; at least one row of polygon shaped, polycrystalline diamond cutting elements extending a predetermined distance from the matrix into an apex to form relief kerfs in geological formation during drilling; a plurality of generally blunt cutting elements positioned in a row to extend from the matrix a predetermined distance and follow in between the apexes of the cutting elements to dislodge formation between the kerfs.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4602691
- OSTI ID:
- 5443124
- Resource Relation:
- Patent File Date: Filed date 7 Jun 1984
- Country of Publication:
- United States
- Language:
- English
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03 NATURAL GAS
42 ENGINEERING
DRILL BITS
DESIGN
PERFORMANCE
WELL DRILLING
DIAMONDS
DRILL PIPES
MATRIX MATERIALS
NATURAL GAS WELLS
OIL WELLS
OPERATION
POLYCRYSTALS
POSITIONING
SPACE DEPENDENCE
WATER
CARBON
CRYSTALS
DRILLING
DRILLING EQUIPMENT
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
HYDROGEN COMPOUNDS
MATERIALS
MINERALS
NONMETALS
OXYGEN COMPOUNDS
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)