EP0274265A2 - Dispositif d'alésoir à rouleaux - Google Patents

Dispositif d'alésoir à rouleaux Download PDF

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Publication number
EP0274265A2
EP0274265A2 EP87311264A EP87311264A EP0274265A2 EP 0274265 A2 EP0274265 A2 EP 0274265A2 EP 87311264 A EP87311264 A EP 87311264A EP 87311264 A EP87311264 A EP 87311264A EP 0274265 A2 EP0274265 A2 EP 0274265A2
Authority
EP
European Patent Office
Prior art keywords
spindle
cutter
cutter assembly
roller
carrier body
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Withdrawn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
EP87311264A
Other languages
German (de)
English (en)
Other versions
EP0274265A3 (fr
Inventor
Ian George Boyington
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.)
Darron Tool & Engineering (sheffield) Ltd
Original Assignee
Darron Tool & Engineering (sheffield) 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 Darron Tool & Engineering (sheffield) Ltd filed Critical Darron Tool & Engineering (sheffield) Ltd
Publication of EP0274265A2 publication Critical patent/EP0274265A2/fr
Publication of EP0274265A3 publication Critical patent/EP0274265A3/fr
Withdrawn legal-status Critical Current

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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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • E21B10/30—Longitudinal axis roller reamers, e.g. reamer stabilisers
    • 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant

Definitions

  • This invention relates to a drill member and is particularly concerned with a so-called “roller reamer", a member designed to maintain the gauge of a hole during drilling.
  • Roller reamers where a number, preferably three or more, of roller cutters are each mounted on a respective spindle, and located in equal spaced relationship around a carrier body, which can be a separate body secured to a drill string member, or can be a drill string member itself, with the roller cutters strategically located along its length.
  • the spindles are provided with bearing blocks at each end and the roller cutters freely rotatably mounted on the spindles.
  • the bearing blocks, spindles and cutters being suitably secured in channels formed in the carrier body or the drill string member.
  • the bearing blocks protrude from the surface of the carrier body, to position the roller cutter at the required gauge diameter. Consequently, during progress of the roller reamer down a hole, the leading, and occasionally the trailing, bearing block is damaged.
  • a cutter assembly for a roller reamer comprises a tubular spindle, bearing blocks secured to the ends of the spindle, a rotary cutter rotatably mounted on the spindle, with rotary seals between the cutter and the spindle at each end of the cutter, a spring-loaded piston mounted within the tubular spindle, a passageway through one bearing member, communicating with the interior of the tubular spindle valve or nipple means closing the inlet to the passageway, and at least one outlet hole through the wall of the spindle communicating with at least one groove extending along the outer face of the spindle over substantially the length of the spindle lying within the rotary cutter.
  • the invention provides a sealed unit ready for application to a carrier body or a drill string.
  • thrust washers are provided at the ends of the rotary cutter to prevent wear on the bearing blocks by eliminating longitudinal movement of the cutter on the spindle.
  • the spindle is removably secured to each bearing block such as by pins extending through holes in the bearing blocks and across corresponding grooves in the outer periphery of the spindle.
  • grease or other suitable lubricant can be forced through the valve or nipple and into the interior of the spindle, driving the piston back against the action of the spring.
  • the spring-loaded piston drives grease or other suitable lubricant through the at least one outlet hole into the at least one external groove on the spindle, thereby maintaining lubricant between the spindle and the rotary cutter, and hence minimising wear on the spindle during the whole of a drilling operation.
  • the carrier body which can be a separate member or a drill string member, is preferably of enlarged section over the area occupied by the cutter assembly.
  • the carrier member in the area of enlarged section is provided with a number, preferably three, of longitudinal channels, each to receive a cutter assembly as above defined, the channels having a depth such that the outer periphery of each bearing block is flush with the outer periphery of the carrier member when secured in place.
  • the bearing blocks may be removably secured to the carrier member by pins passing through co-operating holes in the carrier member and the bearing blocks, and so located as to ensure that the axis of the spindle is parallel to the axis of the carrier member, and such as to set the outer periphery of the rotary cutters at the required gauge diameter of the hole being drilled.
  • the channels in the carrier member, at their ends adjacent the valves or nipples on the bearing blocks are preferably enlarged to allow access to the valves or nipples, to allow recharging of the tubular spindle with grease or other suitable lubricant, after a drill string has been removed from a hole, without the need to remove the cutter assembly from the carrier member.
  • a further advantage of the invention is that seizure of the cutters on the spindles is prevented and if any wear is detected on the spindle at the periphery facing towards the wall of the hole, at which side there is contact with the rotary cutter, the spindle can be rotated through 180° and replaced in the bearing blocks to expose the unworn side of the spindle to contact with the rotary cutter.
  • a drill string m ember 1 has a generally central length 2 of enlarged section having three longitudinal channels in each of which a cutter assembly 3 is secured.
  • each cutter assembly comprises a tubular spindle 4 each end of which is secured in respective bearing blocks 5 and 6 by transverse pins 7.
  • the connection between the spindle 4 and the bearing block 6 is improved by the provision of a tang 8 engaging a corresponding recess 8Ain the bearing block 6.
  • a reamer blade 9 Surrounding the spindle 4 and freely rotatable thereon is a reamer blade 9, there being thrust washers 10 located between the reamer blade and each bearing block 5, 6 to prevent longitudinal movement of the blade on the spindle.
  • a rotary seal 11 is provided between the blade and the spindle.
  • a piston 12 is provided, loaded by a spring 13 in a direction towards the bearing block 5, the spindle at the end secured to the bearing block 5 having a plug 14 with a through-passage 15 co-axial with an inlet passage 16 through the bearing block, closed by a grease nipple 17.
  • transverse outlet holes 18 are provided, emerging in longitudinal grooves 19 extending along the outside of the spindle over substantially the full length of the reamer blade 9.
  • the drill string member With the cutter assemblies secured in the drill string member 1, and the drill string member secured in a drill string, the drill string member is progressed down the hole being drilled, the reamer blades contacting the side of the hole to maintain its gauge. Contact between the blades and the hole wall causes the blades to rotate in their spindles, with considerable assistance of the lubricant in the grooves 19, and during use, the inevitable loss of lubricant from between the spindles and the blades is compensated for by the piston drilling lubricant from within the spindle, through the holes 18 and into the grooves 19.
  • the bearing blocks 5, 6 are flush with the exterior of the length of enlarged section, thereby preventing damage to the bearing blocks during the progression of the drill string member 1 down a hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP87311264A 1987-01-06 1987-12-21 Dispositif d'alésoir à rouleaux Withdrawn EP0274265A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878700109A GB8700109D0 (en) 1987-01-06 1987-01-06 Drill member
GB8700109 1987-01-06

Publications (2)

Publication Number Publication Date
EP0274265A2 true EP0274265A2 (fr) 1988-07-13
EP0274265A3 EP0274265A3 (fr) 1989-09-06

Family

ID=10610272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87311264A Withdrawn EP0274265A3 (fr) 1987-01-06 1987-12-21 Dispositif d'alésoir à rouleaux

Country Status (4)

Country Link
EP (1) EP0274265A3 (fr)
DK (1) DK1788A (fr)
GB (1) GB8700109D0 (fr)
NO (1) NO880017L (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU594885B2 (en) * 1987-07-07 1990-03-15 Gearhart United Pty Ltd Rotary roller reamer
EP0678150A1 (fr) * 1993-11-10 1995-10-25 Gearhart United Pty. Ltd. Aleseur ameliore a rouleaux rotatifs
WO1996029499A1 (fr) * 1995-03-20 1996-09-26 Gearhart United Pty. Ltd. Aleseur a rouleaux bidirectionnels
AU701439B2 (en) * 1995-03-20 1999-01-28 Gearhart United Pty Ltd Bi-directional roller reamer
WO2000058595A1 (fr) * 1999-03-26 2000-10-05 Gearhart Australia Ltd. Rouleau de stabilisateur aleseur
WO2004099555A1 (fr) * 2003-05-07 2004-11-18 Extreme Machining Australia Pty Ltd Bande stabilisatrice pour ensemble galet
WO2005021924A1 (fr) * 2003-09-03 2005-03-10 Gearhart United Pty Ltd Aleseur a cylindre rotatif
US7530409B2 (en) 2002-11-07 2009-05-12 Extreme Machining Australia Pty Ltd. Rotary roller reamer
AU2004269049B2 (en) * 2003-09-03 2009-06-18 Gearhart United Pty Ltd Rotary roller reamer
AU2004236273B2 (en) * 2003-05-07 2010-12-02 Extreme Machining Australia Pty Ltd Stabilising band for a roller assembly
WO2011046960A3 (fr) * 2009-10-12 2011-11-24 Atlas Copco Secoroc Llc Outil d'extraction
US9157282B2 (en) 2011-11-30 2015-10-13 Smith International, Inc. Roller reamer compound wedge retention
US10718165B2 (en) * 2017-11-30 2020-07-21 Duane Shotwell Roller reamer integral pressure relief assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1565788A (en) * 1925-01-26 1925-12-15 Anthony E Carlson Reamer
FR1438748A (fr) * 1965-06-22 1966-05-13 Perfectionnements apportés aux trépans de forage
US3251634A (en) * 1963-07-01 1966-05-17 Exxon Production Research Co Drill bit bearing lubricator
US3907048A (en) * 1974-05-13 1975-09-23 Bralorne Resources Ltd Air cleaned and lubricated stabilizer
GB2053319A (en) * 1979-06-21 1981-02-04 Dresser Ind Earth boring apparatus
GB2138870A (en) * 1980-08-01 1984-10-31 Oncar Corp A roller-reamer unit for roller-reamer apparatus
US4508184A (en) * 1983-05-27 1985-04-02 Hansen Michael S Roller reamer/stabilizer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1565788A (en) * 1925-01-26 1925-12-15 Anthony E Carlson Reamer
US3251634A (en) * 1963-07-01 1966-05-17 Exxon Production Research Co Drill bit bearing lubricator
FR1438748A (fr) * 1965-06-22 1966-05-13 Perfectionnements apportés aux trépans de forage
US3907048A (en) * 1974-05-13 1975-09-23 Bralorne Resources Ltd Air cleaned and lubricated stabilizer
GB2053319A (en) * 1979-06-21 1981-02-04 Dresser Ind Earth boring apparatus
GB2138870A (en) * 1980-08-01 1984-10-31 Oncar Corp A roller-reamer unit for roller-reamer apparatus
US4508184A (en) * 1983-05-27 1985-04-02 Hansen Michael S Roller reamer/stabilizer

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU594885C (en) * 1987-07-07 2004-10-07 Gearhart United Pty Ltd Rotary roller reamer
AU594885B2 (en) * 1987-07-07 1990-03-15 Gearhart United Pty Ltd Rotary roller reamer
EP0678150A1 (fr) * 1993-11-10 1995-10-25 Gearhart United Pty. Ltd. Aleseur ameliore a rouleaux rotatifs
EP0678150A4 (fr) * 1993-11-10 1999-06-16 Gearhart United Pty Ltd Aleseur ameliore a rouleaux rotatifs.
WO1996029499A1 (fr) * 1995-03-20 1996-09-26 Gearhart United Pty. Ltd. Aleseur a rouleaux bidirectionnels
AU701439B2 (en) * 1995-03-20 1999-01-28 Gearhart United Pty Ltd Bi-directional roller reamer
WO2000058595A1 (fr) * 1999-03-26 2000-10-05 Gearhart Australia Ltd. Rouleau de stabilisateur aleseur
US7530409B2 (en) 2002-11-07 2009-05-12 Extreme Machining Australia Pty Ltd. Rotary roller reamer
US7793715B2 (en) 2002-11-07 2010-09-14 Extreme Machining Australia Pty Ltd. Rotary roller reamer
AU2004236273B2 (en) * 2003-05-07 2010-12-02 Extreme Machining Australia Pty Ltd Stabilising band for a roller assembly
WO2004099555A1 (fr) * 2003-05-07 2004-11-18 Extreme Machining Australia Pty Ltd Bande stabilisatrice pour ensemble galet
AU2004269049B2 (en) * 2003-09-03 2009-06-18 Gearhart United Pty Ltd Rotary roller reamer
WO2005021924A1 (fr) * 2003-09-03 2005-03-10 Gearhart United Pty Ltd Aleseur a cylindre rotatif
US8397838B2 (en) 2003-09-03 2013-03-19 Gearhart United Pty Ltd Rotary roller reamer
WO2011046960A3 (fr) * 2009-10-12 2011-11-24 Atlas Copco Secoroc Llc Outil d'extraction
US9157282B2 (en) 2011-11-30 2015-10-13 Smith International, Inc. Roller reamer compound wedge retention
US10718165B2 (en) * 2017-11-30 2020-07-21 Duane Shotwell Roller reamer integral pressure relief assembly

Also Published As

Publication number Publication date
NO880017L (no) 1988-07-07
EP0274265A3 (fr) 1989-09-06
GB8700109D0 (en) 1987-02-11
DK1788D0 (da) 1988-01-05
NO880017D0 (no) 1988-01-05
DK1788A (da) 1988-07-07

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