EP0286373A3 - Bit retaining ring for recovering drill string components - Google Patents

Bit retaining ring for recovering drill string components Download PDF

Info

Publication number
EP0286373A3
EP0286373A3 EP88303050A EP88303050A EP0286373A3 EP 0286373 A3 EP0286373 A3 EP 0286373A3 EP 88303050 A EP88303050 A EP 88303050A EP 88303050 A EP88303050 A EP 88303050A EP 0286373 A3 EP0286373 A3 EP 0286373A3
Authority
EP
European Patent Office
Prior art keywords
bit
hammer
retaining ring
splines
drill string
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88303050A
Other languages
German (de)
French (fr)
Other versions
EP0286373A2 (en
Inventor
Jean-Paul Sauve
William Lawrie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vale Canada Ltd
Original Assignee
Vale Canada Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vale Canada Ltd filed Critical Vale Canada Ltd
Publication of EP0286373A2 publication Critical patent/EP0286373A2/en
Publication of EP0286373A3 publication Critical patent/EP0286373A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E21B17/076—Telescoping joints for varying drill string lengths; Shock absorbers between rod or pipe and drill bit
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/06—Releasing-joints, e.g. safety joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A drill bit retaining ring (32) for securing a drill bit (12) to a percussion hammer (14) having a percussion piston (28). The bit (12) has a shank (18) that extends into a chuck sleeve (16, 22) which forms part of the hammer (14). The bit has a set of upper splines (24) and a set of lower splines (30) that allow the bit to move vertically within the chuck sleeve but such movement is limited when the splines abut against the retaining ring (32) which is secured within the chuck sleeve. If the drill bit (12) becomes stuck in the hole, at least the hammer and the associated drill bit can be recovered thanks to the ring according to the present invention which is designed to fracture when a sufficient outward force (i.e. a force in a direction to move the drill string out of the hole) is applied to the drill string thereby releasing the hammer from the bit. However, the ring (32) must be sufficiently strong to withstand the impact forces from the splines (24, 30) under normal operation.
EP88303050A 1987-04-08 1988-04-06 Bit retaining ring for recovering drill string components Withdrawn EP0286373A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA534135 1987-04-08
CA534135 1987-04-08

Publications (2)

Publication Number Publication Date
EP0286373A2 EP0286373A2 (en) 1988-10-12
EP0286373A3 true EP0286373A3 (en) 1989-07-12

Family

ID=4135391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88303050A Withdrawn EP0286373A3 (en) 1987-04-08 1988-04-06 Bit retaining ring for recovering drill string components

Country Status (7)

Country Link
EP (1) EP0286373A3 (en)
JP (1) JPS63268895A (en)
AU (1) AU1432988A (en)
BR (1) BR8801655A (en)
FI (1) FI881622A (en)
ZA (1) ZA882413B (en)
ZW (1) ZW3688A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962822A (en) * 1989-12-15 1990-10-16 Numa Tool Company Downhole drill bit and bit coupling
US6070678A (en) * 1998-05-01 2000-06-06 Numa Tool Company Bit retention system
US6021856A (en) * 1998-05-29 2000-02-08 Numa Tool Company Bit retention system
WO2002025054A1 (en) * 2000-09-22 2002-03-28 Ingersoll-Rand Company Quick release drill bit for down-hole drills
GB2378196B (en) * 2001-07-30 2005-09-14 Smith International Downhole release joint
US6892832B2 (en) * 2001-11-16 2005-05-17 Varel International, Ltd. Breakable washer earth boring bit
US20050061551A1 (en) * 2003-08-13 2005-03-24 Baker Hughes Incorporated Releasable mill
CA2828486C (en) * 2011-02-28 2015-09-29 Neil H. Akkerman Disconnect assembly for cylindrical members
CN103774998A (en) * 2012-10-18 2014-05-07 张卫星 Inner core opening device of inner-core-detachable drill bit for drilling

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322216A (en) * 1964-11-18 1967-05-30 Ingersoll Rand Co Anvil for percussive drill
US3499664A (en) * 1968-07-29 1970-03-10 Bruns Tool Co Releasing collar
US3924690A (en) * 1973-01-09 1975-12-09 Halifax Tool Co Ltd Percussion drill control means
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
GB1472501A (en) * 1975-01-13 1977-05-04 Gien Abraham Pneumatic percussive machines
US4445572A (en) * 1981-08-17 1984-05-01 Baker International Corporation Unrestricted bore safety joint
DE3514030A1 (en) * 1985-04-18 1986-10-23 Hütte & Co. Bohrtechnik GmbH, 5960 Olpe Drilling apparatus, in particular for pile-drive boring
EP0236915A1 (en) * 1986-03-10 1987-09-16 Alsthom Drillstring joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322216A (en) * 1964-11-18 1967-05-30 Ingersoll Rand Co Anvil for percussive drill
US3499664A (en) * 1968-07-29 1970-03-10 Bruns Tool Co Releasing collar
US3924690A (en) * 1973-01-09 1975-12-09 Halifax Tool Co Ltd Percussion drill control means
GB1472501A (en) * 1975-01-13 1977-05-04 Gien Abraham Pneumatic percussive machines
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
US4445572A (en) * 1981-08-17 1984-05-01 Baker International Corporation Unrestricted bore safety joint
DE3514030A1 (en) * 1985-04-18 1986-10-23 Hütte & Co. Bohrtechnik GmbH, 5960 Olpe Drilling apparatus, in particular for pile-drive boring
EP0236915A1 (en) * 1986-03-10 1987-09-16 Alsthom Drillstring joint

Also Published As

Publication number Publication date
BR8801655A (en) 1988-11-16
JPS63268895A (en) 1988-11-07
EP0286373A2 (en) 1988-10-12
ZA882413B (en) 1988-09-28
ZW3688A1 (en) 1988-10-12
AU1432988A (en) 1988-10-13
FI881622A (en) 1988-10-09
FI881622A0 (en) 1988-04-07

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