Drilling bit
Patent
·
OSTI ID:6367977
A drilling bit comprising a drill body formed from a base portion and a crown portion having a plurality of cutting elements; the base and crown portions are interengaged by a connection portion. An external opening in the crown portion communicates with a core-receiving section in the connecting portion. A core milling assembly, comprising a pair of rotatable, frustum-shaped rotary members, is supported in the connecting section. Each rotary member carries a plurality of cutting elements. During drilling, a core is received in the core-receiving section, where it is milled by the rotation of the rotary members.
- Assignee:
- EDB-86-014438
- Patent Number(s):
- US 4527644
- OSTI ID:
- 6367977
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CORING EQUIPMENT
DESIGN
DRILL BITS
DRILL CORES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
ROTARY DRILLING
ROTARY DRILLS
SLEEVES
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CORING EQUIPMENT
DESIGN
DRILL BITS
DRILL CORES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
ROTARY DRILLING
ROTARY DRILLS
SLEEVES
WELLS