Integrated directional under-reamer and stabilizer United States Patent 06059051

06059051 is referenced by 123 patents and cites 17 patents.

The present invention is an apparatus for use in drilling operations. It uses an under-reamer having a plurality of elongated arms with cutting elements at the ends of the arms for enlarging a previously drilled borehole drilled by a drill bit. One or more stabilizers in close proximity to the under-reamer provide stability to the under-reamer and the drill bit. The stabilizer could be rotating or non-rotating; and could be positioned between the under-reamer and the drill bit, or above the under reamer or above a directional device on the drillstring. The cutting arms are selectively operable to perform the enlargement. The stabilizer may be provided with members that closely fit the size of the borehole.

Title
Integrated directional under-reamer and stabilizer
Application Number
8/962491
Publication Number
6059051
Application Date
October 31, 1997
Publication Date
May 9, 2000
Inventor
Volker Krueger
Cell
DE
Donald Jewkes
New Orleans
LA, US
Agent
Madan Mossman & Sriram P C
Assignee
Baker Hughes Incorporated
TX, US
IPC
E21B 10/32
E21B 4/02
E21B 7/04
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Citations: 123 (view full list)

  1. Andrew D Gledhill, Mark S Fuller, Kenneth J Dalrymple: Expandable bit with secondary release device. Weatherford Lamb, Moser Patterson & Sheridan L, October 11, 2005: US06953096 (119 worldwide citation)
  2. Gregory G Galloway, David J Brunnert: Drilling with concentric strings of casing. Weatherford Lamb, Moser Patterson & Sheridan L, February 22, 2005: US06857487 (102 worldwide citation)
  3. William Banning Vail III, James E Chitwood: Closed-loop conveyance systems for well servicing. Weatherford Lamb, Moser Patterson & Sheridan L, March 22, 2005: US06868906 (90 worldwide citation)
  4. Philippe Fanuel, Jean Pierre Lassoie, Stein Erik Moi, Clint Smith: Bore hole underreamer having extendible cutting arms. Security DBS, Baker Botts L, August 16, 2005: US06929076 (87 worldwide citation)
  5. Charles H Dewey, Wei Xu: Expandable underreamer/stabilizer. Smith International, Conley Rose P C, Shannon W Bates, May 23, 2006: US07048078 (80 worldwide citation)
  6. Charles H Dewey, Wei Xu: Selectively actuatable expandable underreamer/stablizer. Smith International, Conley Rose P C, January 1, 2008: US07314099 (74 worldwide citation)
  7. Richard L Giroux, David Shahin, Adrian Vuyk Jr, Gary Thompson, Kevin Leon Gray, John Timothy Allen, Randy Gene Snider: Methods and apparatus for handling and drilling with tubulars or casing. Weatherford Lamb, Patterson & Sheridan, February 5, 2008: US07325610 (73 worldwide citation)
  8. Steven R Radford, Timothy K Marvel: Expandable stabilizer with roller reamer elements. Baker Hughes Incorporated, Locke Lord Bissell & Liddell, October 4, 2011: US08028767 (68 worldwide citation)
  9. Bernd Georg Pietras, Thomas F Bailey, Adrian Vuyk Jr, Carl J Wilson: Casing running and drilling system. Weatherford Lamb, Patterson & Sheridan, March 20, 2007: US07191840 (67 worldwide citation)
  10. Gregory G Galloway, David J Brunnert: Apparatus and method for drilling with casing. Weatherford Lamb, Moser Patterson & Sheridan L, February 15, 2005: US06854533 (63 worldwide citation)

References: 17 (view full list)

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