Drill bit

Patent · Tue Aug 12 04:00:00 EDT 1986

OSTI ID:5377089

Leibee, D L; Crist, O K

A drill bit is described for use in combination with a through-the-steel drill stem, the drill bit including a drill tip; an elongated body portion having a lower portion for interconnection of the drill bit to the drill stem, a head portion for receiving the drill tip, and a bore through which cuttings may be removed to the drill stem; and sleeve means attached about the body portion intermediate the lower portion and the head portion thereof. The head portion includes a web extending transversely across the bore and having opposed axially extending faces contoured from the periphery of the body portion toward the axis thereof and leading from the drill tip to the bore. The upper reaches of the axially extended faces opening to the cutting edges of the drill tip and the lower reaches thereof opening to the bore, the sleeves means extend from the body portion and in opposed spaced apart axial relation to and above the lower reaches of the axially extending faces of the web whereby the axially extending faces of the web and the inner surface of the sleeve means define drill cut receiving ports opening upwardly to the drill tip and opening downwardly to the bore.

• Assignee: Marman Group, Chicago, IL
• Patent Number(s): US 4605079
• OSTI ID: 5377089
• 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)
CUTTINGS REMOVAL
DESIGN
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
PIPES
REMOVAL
SPACE DEPENDENCE
WELL DRILLING
WELLS