Two piece down hole drill chuck

Patent · Tue Nov 17 04:00:00 EST 1987

OSTI ID:5695815

Hughes, R W

A two piece drill chuck for a downhole drill is described of the type comprising: a cylindrical casing supported on a drill string for driving support therefrom; and a drill bit partly surrounded by the extending downwardly from the casing. The improvement comprises: a mounting chuck means of hollow cylindrical form for securing the drill bit to a downhole drill. The chuck mounting means is interspaced between the casing and the drill bit and being in driving engagement with the casing and the drill bit. The means has a lower portion extending downwardly beyond the lower end of the casing; and a chuck wear collar of hollow cylindrical form concentric about and covering the entire otherwise exposed lower portion of the mounting chuck means. The chuck wear collar has an upwardly facing surface in engagement with the casing and a downwardly facing surface in engagement with the drill bit.

• Assignee: Ingersoll-Rand Co., Woodcliff Lake, NJ
• Patent Number(s): US 4706764
• OSTI ID: 5695815
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
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03 NATURAL GAS
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DESIGN
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
DRILLS
EQUIPMENT
FLUIDS
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
ROCK DRILLING
SLEEVES
SUPPORTS
WELLS