GB2019921A - Drill bit air clearing system - Google Patents

Drill bit air clearing system

Info

Publication number
GB2019921A
GB2019921A GB7910560A GB7910560A GB2019921A GB 2019921 A GB2019921 A GB 2019921A GB 7910560 A GB7910560 A GB 7910560A GB 7910560 A GB7910560 A GB 7910560A GB 2019921 A GB2019921 A GB 2019921A
Authority
GB
United Kingdom
Prior art keywords
drill bit
peripheral
cutter
drill
leg
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.)
Granted
Application number
GB7910560A
Other versions
GB2019921B (en
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.)
Camco Drilling Group Ltd
Original Assignee
Reed Tool Co 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 Reed Tool Co Ltd filed Critical Reed Tool Co Ltd
Publication of GB2019921A publication Critical patent/GB2019921A/en
Application granted granted Critical
Publication of GB2019921B publication Critical patent/GB2019921B/en
Expired 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
    • 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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

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)

Abstract

An earth boring drill employing roller cutters 15 is provided with a peripheral seal 25a surrounding the bearing shaft 14 and engaging a peripheral surface of an open end of the cutter to prevent entry of solids to and retain lubricant in the bearing. The drill bit is provided with one or more passageways 39a arranged for pressurization with air provided through the drill string and having an opening 41a, 42a into the space between a leg 13 of the drill bit and the adjacent rotatable surface of the cutter 15. The size of the passageway is preferably related to the size of the peripheral clearance between the cutter 15 and the leg 13 of the drill bit, such that a positive pressure of air is maintained in said peripheral space to blow out detritus which would tend to erode the seal. <IMAGE>
GB7910560A 1978-05-01 1979-03-27 Drill bit air clearing system Expired GB2019921B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90156078A 1978-05-01 1978-05-01

Publications (2)

Publication Number Publication Date
GB2019921A true GB2019921A (en) 1979-11-07
GB2019921B GB2019921B (en) 1982-10-06

Family

ID=25414423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7910560A Expired GB2019921B (en) 1978-05-01 1979-03-27 Drill bit air clearing system

Country Status (2)

Country Link
CA (1) CA1081686A (en)
GB (1) GB2019921B (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981182A (en) * 1990-01-26 1991-01-01 Dresser Industries, Inc. Sealed rotary blast hole drill bit utilizing air pressure for seal protection
US5513711A (en) * 1994-08-31 1996-05-07 Williams; Mark E. Sealed and lubricated rotary cone drill bit having improved seal protection
US6033117A (en) * 1995-12-19 2000-03-07 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration
US6254275B1 (en) 1995-12-19 2001-07-03 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability
US6264367B1 (en) 1995-12-19 2001-07-24 Smith International, Inc. Dual-seal drill bit with fluid cleaning capability
US6408957B1 (en) 2000-08-23 2002-06-25 Smith International, Inc. Sealed bearing roller cone bit having anti-plugging device
EP1830034A3 (en) * 2006-03-02 2007-11-07 Weatherford/Lamb, Inc. Rotating control head radial seal protection and leak detection systems
US7926593B2 (en) 2004-11-23 2011-04-19 Weatherford/Lamb, Inc. Rotating control device docking station
US7992657B2 (en) 2006-08-18 2011-08-09 Atlas Copco Secoroc Llc Earth bit having a wear ring
US7997345B2 (en) 2007-10-19 2011-08-16 Weatherford/Lamb, Inc. Universal marine diverter converter
US8286734B2 (en) 2007-10-23 2012-10-16 Weatherford/Lamb, Inc. Low profile rotating control device
US8322432B2 (en) 2009-01-15 2012-12-04 Weatherford/Lamb, Inc. Subsea internal riser rotating control device system and method
US8347983B2 (en) 2009-07-31 2013-01-08 Weatherford/Lamb, Inc. Drilling with a high pressure rotating control device
US8347982B2 (en) 2010-04-16 2013-01-08 Weatherford/Lamb, Inc. System and method for managing heave pressure from a floating rig
US8826988B2 (en) 2004-11-23 2014-09-09 Weatherford/Lamb, Inc. Latch position indicator system and method
US8844652B2 (en) 2007-10-23 2014-09-30 Weatherford/Lamb, Inc. Interlocking low profile rotating control device
US9175542B2 (en) 2010-06-28 2015-11-03 Weatherford/Lamb, Inc. Lubricating seal for use with a tubular
US9359853B2 (en) 2009-01-15 2016-06-07 Weatherford Technology Holdings, Llc Acoustically controlled subsea latching and sealing system and method for an oilfield device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2009987A1 (en) * 1990-02-14 1991-08-14 Kenneth M. White Journal bearing type rock bit
US5709278A (en) 1996-01-22 1998-01-20 Dresser Industries, Inc. Rotary cone drill bit with contoured inserts and compacts
US5722497A (en) 1996-03-21 1998-03-03 Dresser Industries, Inc. Roller cone gage surface cutting elements with multiple ultra hard cutting surfaces

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981182A (en) * 1990-01-26 1991-01-01 Dresser Industries, Inc. Sealed rotary blast hole drill bit utilizing air pressure for seal protection
US5513711A (en) * 1994-08-31 1996-05-07 Williams; Mark E. Sealed and lubricated rotary cone drill bit having improved seal protection
US6033117A (en) * 1995-12-19 2000-03-07 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration
US6254275B1 (en) 1995-12-19 2001-07-03 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability
US6264367B1 (en) 1995-12-19 2001-07-24 Smith International, Inc. Dual-seal drill bit with fluid cleaning capability
US6408957B1 (en) 2000-08-23 2002-06-25 Smith International, Inc. Sealed bearing roller cone bit having anti-plugging device
AU763597B2 (en) * 2000-08-23 2003-07-24 Sandvik Intellectual Property Ab Sealed bearing roller cone bit having anti-plugging device
US8113291B2 (en) 2002-10-31 2012-02-14 Weatherford/Lamb, Inc. Leak detection method for a rotating control head bearing assembly and its latch assembly using a comparator
US8714240B2 (en) 2002-10-31 2014-05-06 Weatherford/Lamb, Inc. Method for cooling a rotating control device
US7836946B2 (en) 2002-10-31 2010-11-23 Weatherford/Lamb, Inc. Rotating control head radial seal protection and leak detection systems
US7934545B2 (en) 2002-10-31 2011-05-03 Weatherford/Lamb, Inc. Rotating control head leak detection systems
US8353337B2 (en) 2002-10-31 2013-01-15 Weatherford/Lamb, Inc. Method for cooling a rotating control head
US7926593B2 (en) 2004-11-23 2011-04-19 Weatherford/Lamb, Inc. Rotating control device docking station
US8826988B2 (en) 2004-11-23 2014-09-09 Weatherford/Lamb, Inc. Latch position indicator system and method
US9784073B2 (en) 2004-11-23 2017-10-10 Weatherford Technology Holdings, Llc Rotating control device docking station
US9404346B2 (en) 2004-11-23 2016-08-02 Weatherford Technology Holdings, Llc Latch position indicator system and method
US8939235B2 (en) 2004-11-23 2015-01-27 Weatherford/Lamb, Inc. Rotating control device docking station
US8701796B2 (en) 2004-11-23 2014-04-22 Weatherford/Lamb, Inc. System for drilling a borehole
US8408297B2 (en) 2004-11-23 2013-04-02 Weatherford/Lamb, Inc. Remote operation of an oilfield device
EP1830034A3 (en) * 2006-03-02 2007-11-07 Weatherford/Lamb, Inc. Rotating control head radial seal protection and leak detection systems
EP2631419A1 (en) * 2006-03-02 2013-08-28 Weatherford/Lamb Inc. Rotating control head radial seal protection and leak detection systems
US7992657B2 (en) 2006-08-18 2011-08-09 Atlas Copco Secoroc Llc Earth bit having a wear ring
US7997345B2 (en) 2007-10-19 2011-08-16 Weatherford/Lamb, Inc. Universal marine diverter converter
US10087701B2 (en) 2007-10-23 2018-10-02 Weatherford Technology Holdings, Llc Low profile rotating control device
US8844652B2 (en) 2007-10-23 2014-09-30 Weatherford/Lamb, Inc. Interlocking low profile rotating control device
US9004181B2 (en) 2007-10-23 2015-04-14 Weatherford/Lamb, Inc. Low profile rotating control device
US8286734B2 (en) 2007-10-23 2012-10-16 Weatherford/Lamb, Inc. Low profile rotating control device
US8770297B2 (en) 2009-01-15 2014-07-08 Weatherford/Lamb, Inc. Subsea internal riser rotating control head seal assembly
US9359853B2 (en) 2009-01-15 2016-06-07 Weatherford Technology Holdings, Llc Acoustically controlled subsea latching and sealing system and method for an oilfield device
US8322432B2 (en) 2009-01-15 2012-12-04 Weatherford/Lamb, Inc. Subsea internal riser rotating control device system and method
US8636087B2 (en) 2009-07-31 2014-01-28 Weatherford/Lamb, Inc. Rotating control system and method for providing a differential pressure
US8347983B2 (en) 2009-07-31 2013-01-08 Weatherford/Lamb, Inc. Drilling with a high pressure rotating control device
US9334711B2 (en) 2009-07-31 2016-05-10 Weatherford Technology Holdings, Llc System and method for cooling a rotating control device
US8863858B2 (en) 2010-04-16 2014-10-21 Weatherford/Lamb, Inc. System and method for managing heave pressure from a floating rig
US9260927B2 (en) 2010-04-16 2016-02-16 Weatherford Technology Holdings, Llc System and method for managing heave pressure from a floating rig
US8347982B2 (en) 2010-04-16 2013-01-08 Weatherford/Lamb, Inc. System and method for managing heave pressure from a floating rig
US9175542B2 (en) 2010-06-28 2015-11-03 Weatherford/Lamb, Inc. Lubricating seal for use with a tubular

Also Published As

Publication number Publication date
GB2019921B (en) 1982-10-06
CA1081686A (en) 1980-07-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee