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1. WO2011123765 - DOWN-THE-HOLE DRILL HAMMER HAVING AN EXTENDABLE DRILL BIT ASSEMBLY

Publication Number WO/2011/123765
Publication Date 06.10.2011
International Application No. PCT/US2011/030916
International Filing Date 01.04.2011
IPC
E21B 10/32 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10Drill bits
26Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32with expansible cutting tools
E21B 4/06 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
4Drives for drilling, used in the borehole
06Down-hole impacting means, e.g. hammers
CPC
E21B 10/32
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
10Drill bits
26Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32with expansible cutting tools
E21B 4/06
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
4Drives for drilling, used in the borehole
06Down-hole impacting means, e.g. hammers
E21B 7/208
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
7Special methods or apparatus for drilling
20Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
208using down-hole drives
Applicants
  • CENTER ROCK INC. [US]/[US] (AllExceptUS)
  • LYON, Leland, H. [US]/[US] (UsOnly)
  • LAY, Warren, Thomas [US]/[US] (UsOnly)
Inventors
  • LYON, Leland, H.
  • LAY, Warren, Thomas
Agents
  • KIM, Jae, Y.
Priority Data
61/319,95701.04.2010US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DOWN-THE-HOLE DRILL HAMMER HAVING AN EXTENDABLE DRILL BIT ASSEMBLY
(FR) MARTEAU PERFORATEUR DE FOND DOTÉ D'UN ENSEMBLE TRÉPAN EXTENSIBLE
Abstract
(EN) A down-the-hole drill hammer assembly includes a casing, a drill stem, a drilling lug segment and a pilot drill bit is provided. The drill stem is housed within the casing and includes an abutment surface. The drilling lug segment is slidably engaged with a distal end of the drill stem and movable between an initial configuration and an extended configuration. The drilling lug segment includes a proximal end engageable with the abutment surface of the drilling lug segment. The drill stem is movable between first and second positions within the pilot drill bit. In moving to the second position, the drill stem slidingly engages the drilling lug segment and moves the drilling lug segment to the extended configuration.
(FR) L'invention concerne un ensemble marteau perforateur de fond comprenant un carter, une tige de forage, un segment d'ergot de forage et un trépan pilote. La tige de forage est logée à l'intérieur du carter et comprend une surface d'appui. Le segment d'ergot de forage est en liaison glissière avec une extrémité distale de la tige de forage et peut se déplacer entre une configuration initiale et une configuration déployée. Le segment d'ergot de forage comprend une extrémité proximale susceptible de coopérer avec la surface d'appui du segment d'ergot de forage. La tige de forage est mobile entre une première et une deuxième position à l'intérieur du trépan pilote. Lors du passage à la deuxième position, la tige de forage coopère par glissement avec le segment d'ergot de forage et amène ledit segment d'ergot de forage dans une configuration déployée.
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