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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Downhole tractor

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E21B-017/10    B60K-001/00    F16L-001/28   
미국특허분류(USC) 166/241.1 ; 166/243 ; 180/065.5 ; 405/184
출원번호 US-0245468 (1999-02-05)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Herman
인용정보 피인용 횟수 : 132  인용 특허 : 17
초록
▼

A downhole tractor is provided that includes a housing and a first wheel assembly coupled to the housing that is operable to translate away from the housing in a first direction. The first wheel assembly has a first electric motor, a first wheel, and a first reduction gear assembly coupled between the first electric motor and the first wheel. A second wheel assembly is coupled to the housing and is operable to translate away from the housing in a second direction that is opposite to the first direction. The second wheel assembly has a second electric mot...

대표
청구항
▼

[ What is claimed is:] [1.]1. A downhole tractor, comprising:a housing;a first wheel assembly coupled to the housing and being operable to translate away from the housing in a first direction, the first wheel assembly having a first electric motor and a first wheel coupled to the first electric motor;a second wheel assembly coupled to the housing and being operable to translate away from the housing in a second direction that is opposite to the first direction, the second wheel assembly having a second electric motor and a second wheel coupled to the sec...

이 특허에 인용된 특허 (17)

  1. Hallundbaek Jorgen (Lyngby DKX). Borehole, as well as a method and an apparatus for forming it. USP1994125375668.
  2. Rockower Gerald (Brooklyn NY) Marazzo Joseph J. (Scotch Plaines NJ). Cutting/expanding tool. USP1994045306101.
  3. Traver Jack J. (Lafayette LA) Palmer C. Dale (Lafayette LA) Hughes Richard (Youngsville LA). Downhole mobility and propulsion apparatus. USP1986114624306.
  4. Rau Jim Lee (Lafayette IN) White ; Jr. Hollis Newcomb (West Lafayette IN). Drive assembly. USP1976073969950.
  5. Smith John R. E. (Houston TX). Method and apparatus for logging inclined earth boreholes. USP1980034192380.
  6. Abrams Sam (P.O. Box 3626 Fort Myers FL 33918). Pipe splitting and spreading system. USP1995085439320.
  7. Napeloni Paul (Katy TX) Sieber Daniel G. (Gadsden AL) Cabe Thomas D. (Sugarland TX). Probe for internal bore inspection. USP1989074843896.
  8. Granella Bruno (Laurstrasse 22 5200 Brugg CHX). Process, in particular to install sewer pipes and a device to carry out the process. USP1995045403122.
  9. Nice Sidney B. (Humble TX). Propulsion apparatus for positioning selected tools in tubular members. USP1993055209304.
  10. Kimura Koichi (Hyogo JPX) Nishida Hiroharu (Osaka JPX). Propulsion method of pipe to be buried without soil discharge and an excavator. USP1993055211510.
  11. Cognevich Michael L. (Tulsa OK) Shirk Steven H. (Broken Arrow OK). Releasable well tool stabilizer. USP1990104960173.
  12. Rodgers ; Jr. Robert E. (Houston TX). Selectively-controlled well bore apparatus. USP1981014243099.
  13. Kling ; Miguel. Self-driving and self-locking device for traversing channels and elongated structures. USP1978044085808.
  14. Lembcke Jeffrey J. (Broken Arrow OK) Shaw Brian (Broken Arrow OK). Well tool stabilizer and method. USP1989034811792.
  15. Newman Kenneth R. ; Haver Nelson A. ; Speller David J.. Wellbore tractor and method of moving an item through a wellbore. USP1998085794703.
  16. Legal Jules O. (Manitoba CAX). Wheel with coaxial drive system mounted in the wheelhub field of the invention. USP1993085236055.
  17. Jordan John W. (Houston TX) Gilbert Gregory N. (Houston TX) Tomek Martin L. (Houston TX) Grigar Larry L. (East Bernard TX) Slagle Terry L. (Keller TX). Wireline supported perforating gun enabling oriented perforations. USP1991085040619.

이 특허를 인용한 특허 피인용횟수: 132

  1. Vail, III,William Banning. Apparatus and method for completing oil and gas wells. USP2006057036610.
  2. Galloway, Gregory G.; Brunnert, David J.. Apparatus and method for drilling with casing. USP2005026854533.
  3. Pietras,Bernd Georg. Apparatus and method for facilitating the connection of tubulars using a top drive. USP2007057213656.
  4. Galloway, Gregory G.; Brunnert, David J.. Apparatus and method of drilling with casing. USP2005056899186.
  5. Galloway,Gregory G.; Brunnert,David J.. Apparatus and method of drilling with casing. USP2006087083005.
  6. Giroux,Richard L.; Galloway,Gregory G.; Le,Tuong Thanh; Jackson,Raymond H.; Nazzal,Gregory R.; Swarr,James C.; Brunnert,David J.; Beasley,William M.; Lirette,Brent J.; Odell,Albert C.; Terry,Jim; McKay,Dave; Alkhatib,Samir; Wardley,Mike. Apparatus and methods for drilling a wellbore using casing. USP2008027334650.
  7. Haugen,David M.; Tilton,Frederick T.. Apparatus and methods for drilling with casing. USP2006087090023.
  8. Pietras,Bernd Georg. Apparatus and methods for facilitating the connection of tubulars using a top drive. USP2006107128161.
  9. Haugen,David M.. Apparatus and methods for tubular makeup interlock. USP2006077073598.
  10. Giroux,Richard Lee; Odell, II,Albert C.; Thompson,Gary; Haugen,David; Le,Tuong Thanh; Dugal,Robert; Heidecke,Karsten; Shahin,David. Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly. USP2009037503397.
  11. Freeman,Tommie A.. Apparatus for actuating a well tool and method for use of same. USP2006127150318.
  12. Pietras,Bernd Georg. Apparatus for connecting tublars using a top drive. USP2006087090021.
  13. Pietras,Bernd Georg. Apparatus for facilitating the connection of tubulars using a top drive. USP2006117137454.
  14. Fraser, Scott David. Application of downhole rotary tractor. USP2017049624723.
  15. Hallundbæk, Jørgen. Arm assembly. USP2016129512688.
  16. Lange, Gustav Edward; Kirkhope, Kennedy John. Bend measurements of adjustable motor assemblies using magnetometers. USP2018069995133.
  17. Lange, Gustav Edward; Kirkhope, Kennedy John. Bend measurements of adjustable motor assemblies using strain gauges. USP2017119816369.
  18. Post, Roger A.; Sheiretov, Todor K.; Roy, Carl J.; Cordera, Joseph F.. Bi-directional grip mechanism for a wide range of bore sizes. USP2003106629568.
  19. Simpson, Neil Andrew Abercrombie. Bi-directional traction apparatus. USP2005106953086.
  20. Püttmann, Franz-Josef. Boring system. USP2015038967911.
  21. Pietras,Bernd Georg; Bailey,Thomas F.; Vuyk, Jr.,Adrian; Wilson,Carl J.. Casing running and drilling system. USP2007037191840.
  22. Pietras,Bernd Georg. Casing running head. USP2007107284617.
  23. Vail, III, William Banning; Chitwood, James E.. Closed-loop conveyance systems for well servicing. USP2005036868906.
  24. Tunc, Gokturk; Prieto, Cecilia. Coiled tubing tractor assembly. USP2016119500058.
  25. Yang, Sheng-Shu; Chang, Shyh-Ming. Contact structure and forming method thereof and connecting structure thereof. USP2012078215969.
  26. Aivalis, James G.; McGillivary, Corey. Deployment tool for well logging instruments conveyed through the interior of a pipe string. USP2009067549471.
  27. Heijnen, Wilhelmus Hubertus Paulus Maria. Device for manipulating a tool in a well tubular. USP2003066575236.
  28. Snyder, John Kenneth; Hay, Richard Thomas. Down hole harmonic drive transmission. USP2016109470042.
  29. Hallundbæk, Jørgen. Downhole driving unit having a hydraulic motor in a wheel. USP2016099435167.
  30. Hallundbæk, Jørgen. Downhole driving unit having a hydraulic motor with a planetary gearing system. USP2015069051802.
  31. Hallundbæk, Jørgen. Downhole driving unit having a hydraulic motor with a static cam ring. USP2017079708866.
  32. Hallundbæk, Jørgen. Downhole driving unit having a spring member for assembling a hydraulic motor housing. USP2016069359844.
  33. Rudd,Wayne; Metcalfe,Paul David. Downhole filter. USP2007037188687.
  34. Saeed, Gohar. Downhole sensor interface. USP2014108863824.
  35. Loiseau, Anthony; Brown, James Ernest. Downhole tool positioning system and method. USP2016129528354.
  36. Foucher, Pierre-Arnaud; Sheiretov, Todor K.; Giem, Gregory J.; Teurlay, Lucas; Smith, Quentin. Downhole tools and methods of controlling downhole tools. USP2017129850724.
  37. Wardley,Mike. Drilling bit for drilling while running casing. USP2007057216727.
  38. Pia,Giancarlo. Drilling method. USP2006087093675.
  39. Hallundbaek, Jørgen; Andersen, Thomas Sune. Drilling tool with fluid cleaner. USP2012118316965.
  40. Giroux,Richard L.; Thompson,Gary; Odell, III,Albert C.. Drilling with casing latch. USP2008047360594.
  41. Galloway,Gregory G.; Brunnert,David J.. Drilling with concentric strings of casing. USP2006117131505.
  42. Krueger, V, Rudolph Ernst. Eccentric linkage gripper. USP2016119488020.
  43. Krueger, V, Rudolph Ernst. Eccentric linkage gripper. USP20181210156107.
  44. Bloom,Duane; Moore,Norman Bruce; Beaufort,Ronald E.. Electrically sequenced tractor. USP2007037185716.
  45. Bloom,Duane; Moore,Norman Bruce; Beaufort,Ronald E.. Electrically sequenced tractor. USP2007027174974.
  46. Mock, Phillip W.. Expandable ramp gripper. USP2012118302679.
  47. Mock, Phillip W.. Expandable ramp gripper. USP2009127624808.
  48. Nelson, Keith R.; Saeed, Gohar; Aguirre, Franz. Force monitoring tractor. USP2014128905148.
  49. Carter,Thurman B.; Brunnert,David J.; Haugen,David M.. Full bore lined wellbores. USP2008087413020.
  50. Aguirre, Franz; Dupree, Wade D.; Holly, Mark; Copold, Derek. Grip enhanced tractoring. USP2013128602115.
  51. Bloom, Duane; Moore, Norman Bruce; Krueger, V, Rudolph Ernst. Gripper assembly for downhole tools. USP2013108555963.
  52. Bloom, Duane; Moore, Norman Bruce; Krueger, V, Rudolph Ernst. Gripper assembly for downhole tools. USP2016019228403.
  53. Bloom, Duane; Moore, Norman Bruce; Krueger, V, Rudolph Ernst. Gripper assembly for downhole tools. USP2018069988868.
  54. Bloom, Duane; Moore, Norman Bruce; Krueger, V, Rudolph Ernst. Gripper assembly for downhole tools. USP2015028944161.
  55. Mitchell, Sarah Brianne. High expansion or dual link gripper. USP2016099447648.
  56. Chitwood, James E.; Vail, III, William Banning; Crossland, William G.; Skerl, Damir S.; Dekle, Robert L.. High power umbilicals for subterranean electric drilling machines and remotely operated vehicles. USP2005026857486.
  57. Hallundbæk, Jørgen. Hydraulic assembly. USP2017079708873.
  58. Hill, Stephen D.; Prieto, Cecilia. Hydraulically driven tandem tractor assembly. USP2015099133673.
  59. Guerrero, Julio C.. Mechanism that assists tractoring on uniform and non-uniform surfaces. USP2005066910533.
  60. Vail, III,William Banning. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2007017165634.
  61. Vail, III,William Banning; Chitwood,James E.. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2007067228901.
  62. Vail, III,William Banning; Chitwood,James E.. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2006057048050.
  63. Pietras,Bernd Georg. Method and apparatus for connecting tubulars using a top drive. USP2007057219744.
  64. Shahin,David; Habetz,Jeff; Haugen,David M.; Thompson,Gary; Pietras,Bernd Georg; Hollingsworth,Jimmy L.; Reinholdt,Bernd. Method and apparatus for drilling with casing. USP2006117140445.
  65. McDaniel,Gary; Thomas, Jr.,Allen Keith; Cummins,Patrick D.; Hill,Troy F.; Cummins,Tracy J.; Boutwell, Jr.,Doyle Frederic; Hayes,Michael. Method and apparatus for handling wellbore tubulars. USP2008057370707.
  66. Pfutzner, Harold G.. Method and apparatus for precise positioning of a borehole measurement instrument. USP2015049002648.
  67. Lee, Grant; Jensen, Michael; Herbst, Neil; Blake, Sarah. Method and system for an automatic milling operation. USP2018039920613.
  68. Glaser,Mark C.; Allen,Jack R.; Ferguson,Gerald M.; Alvarez,Ralph A.. Method of drilling and completing multiple wellbores inside a single caisson. USP2007097264067.
  69. Weerasinghe, Nalin; Ouaaba, Khalid; Liyanage, Maduranga. Method, apparatus and system for safe mode telemetry system. USP20181010087748.
  70. Vail, III,William Banning. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2006127147068.
  71. Vail, III,William Banning. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2007067234542.
  72. Vail, III,William Banning. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2006097100710.
  73. Vail, III,William Banning. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells. USP2006097108084.
  74. Pietras, Bernd Georg. Methods and apparatus for connecting tubulars using a top drive. USP2009117617866.
  75. Giroux, Richard L.; Odell, II, Albert C.; Xu, Wei. Methods and apparatus for drilling with casing. USP2012108276689.
  76. Giroux,Richard L.; Shahin,David; Vuyk, Jr.,Adrian; Thompson,Gary; Gray,Kevin Leon; Allen,John Timothy; Snider,Randy Gene. Methods and apparatus for handling and drilling with tubulars or casing. USP2008027325610.
  77. Vail, III, William Banning; Skerl, Tomislav. Methods and apparatus for monitoring and fixing holes in composite aircraft. USP2017039586699.
  78. Giroux,Richard L.; Galloway,Gregory G.; Brunnert,David J.; Maguire,Patrick G.; Le,Tuong Thanh; Odell, II,Albert C.; Haugen,David M.; Tilton,Frederick T.; Lirette,Brent J.; Murray,Mark; Moyes,Peter Barnes. Methods and apparatus for wellbore construction and completion. USP2007127311148.
  79. Lirette, Brent J.; Brunnert, David J.. Methods and apparatus for wellbore construction and completion. USP201111E042877.
  80. Vail, III, William Banning. Methods and apparatus to prevent failures of fiber-reinforced composite materials under compressive stresses caused by fluids and gases invading microfractures in the materials. USP2017049625361.
  81. Vail, William Banning. Methods and apparatus to prevent failures of fiber-reinforced composite materials under compressive stresses caused by fluids and gases invading microfractures in the materials. USP2013088515677.
  82. Mock, Philip W.. Methods and apparatuses for inhibiting rotational misalignment of assemblies in expandable well tools. USP2013078485278.
  83. Metcalfe,Paul David; Simpson,Neil Andrew Abercrombie. Methods for drilling and lining a wellbore. USP2006107117957.
  84. Hallundbæk, Jørgen. Modular downhole tool. USP2016129518437.
  85. Guerrero,Julio C.; Doering,Falk W.; Roy,Carl J.; Beguin,Paul J.. Open hole tractor with tracks. USP2007017156192.
  86. Hay, Richard T.. Piston tractor system for use in subterranean wells. USP2014098839883.
  87. Mathiassen, Svein; Mathiassen, Ivar. Portable or embedded access and input devices and methods for giving access to access limited devices, apparatuses, appliances, systems or networks. USP2012088255697.
  88. Shahin,David; Habetz,Jeff; Hollingsworth,Jimmy Lawrence; Reinholdt,Bernd. Positioning and spinning device. USP2009037509722.
  89. McCartney, Richard I.. Power supply architectures for powered devices. USP2017019549148.
  90. Moore, Norman Bruce; Beaufort, Ronald E.; Krueger, Rudolph E.. Puller-thruster downhole tool. USP2004076758279.
  91. Moore,Norman Bruce; Beaufort,Ronald E.; Krueger,Rudolph E.. Puller-thruster downhole tool. USP2007097273109.
  92. Moore,Norman Bruce; Beaufort,Ronald E.; Krueger,Rudolph E.. Puller-thruster downhole tool. USP2007017156181.
  93. Moore,Norman Bruce; Beaufort,Ronald E.; Krueger,Rudolph E.. Puller-thruster downhole tool. USP2006067059417.
  94. Mark Buyers GB; Simon Benedict Fraser GB. Reciprocating running tool. USP2002026345669.
  95. Hughes, Michael Franklin; Harban, Scott. Remote controlled self propelled deployment system for horizontal wells. USP2017089719315.
  96. Jordan, John Christopher; Martens, James G.; Colvard, R. Lee; Lirette, Brent J.; Galloway, Gregory Guy; Brunnert, David J.; Gaspard, Gregory Gerard; Gradishar, John Robert. Retractable joint and cementing shoe for use in completing a wellbore. USP2010067730965.
  97. Mock, Philip W.; Moore, N. Bruce; Bloom, Duane. Roller link toggle gripper and downhole tractor. USP2009107607497.
  98. Mock,Philip W.; Moore,N. Bruce; Bloom,Duane. Roller link toggle gripper and downhole tractor. USP2008077392859.
  99. Aguirre, Franz; Sheiretov, Todor K.; Nelson, Keith R.. Self-aligning open-hole tractor. USP2014078770303.
  100. Sheiretov, Todor K.; Chilcoat, Dwight C.; Ewan, Robin A.; Roy, Carl J; Billingham, Matthew; Aguirre, Franz. Self-anchoring device with force amplification. USP2010127854258.
  101. Sheiretov, Todor K.; Chilcoat, Dwight C.; Ewan, Robin A.; Roy, Carl J; Billingham, Matthew; Aguirre, Franz. Self-anchoring device with force amplification. USP2009047516782.
  102. Giroux,Richard L.; Brunnert,David J.; Galloway,Gregory Guy; Jordan,John C.. Single-direction cementing plug. USP2006107128154.
  103. Giroux, Richard Lee; Rosenberg, Steven M.. Stage cementing methods used in casing while drilling. USP2010127857052.
  104. Hall, Robert Neil. Swivel and eccentric weight to orient a roller sub. USP2004086779598.
  105. Mackenzie, Gordon R. J.. System and method for autonomously performing a downhole well operation. USP2005016843317.
  106. Slocum, Alexander; Nelson, Keith; Gabler, Irene; Bayless, James. System and method for conveying. USP2015109157287.
  107. Schultz, Roger L.; Ellis, Gary D.; Bayh, lll, Russell I.; Skinner, Neal G.. System and method for monitoring packer slippage. USP2005086924745.
  108. Schultz,Roger L.; Fripp,Michael L.. System and method for processing signals in a well. USP2006067063146.
  109. Hall, Joe; Ash, Sam; Campbell, Scott; Marsh, Tim; Casey, Leonard. System and method for releasing and retrieving memory tool with wireline in well pipe. USP2009057537061.
  110. Schultz, Roger L.; Young, Timothy M.; Bayh, III, Russell I.. System and method for sensing leakage across a packer. USP2005036865934.
  111. Streich,Steven G.; Schultz,Roger L.; Tucker,James C.; Stepp,Lee Wayne; Starr,Phillip M.. System and method for sensing load on a downhole tool. USP2007067234517.
  112. Lovell, John R.; Gay, Michael G.; Adnan, Sarmad; Zemlak, Kean. System and methods using fiber optics in coiled tubing. USP2017079708867.
  113. Snider, Randy Gene; Shahin, David; Allen, Jim; Gray, Kevin; Thompson, Gary. Top drive casing system. USP2010057712523.
  114. Hallundbæk, Jørgen. Torque member. USP2016129523253.
  115. Simpson,Neil Andrew Abercrombie; D'Arcy,Susan; Russell,David Alexander. Traction apparatus. USP2006057051587.
  116. Doering,Falk W.; Sheiretov,Todor K.; Ewan,Robin A.; Foubert,Benoit A.. Traction control for downhole tractor. USP2007037185714.
  117. Mathukia, Shri Bhanjibhai. Tractor having a convertible front end and variable track width and related methods. USP2005066902022.
  118. Bedrossian, Nazareth Sarkis. Tractor traction control for cased hole. USP2018019874061.
  119. Mock, Philip W.; Krueger, V, Rudolph Ernst; Bloom, Duane; Moore, N. Bruce; Levay, Robert. Tractor with improved valve system. USP2012088245796.
  120. Mock,Phil; Krueger, V,Ernst R.; Bloom,Duane; Moore,N. Bruce. Tractor with improved valve system. USP2006107121364.
  121. Mock,Phil; Krueger, V,Rudolph Ernst; Bloom,Duane; Moore,N. Bruce. Tractor with improved valve system. USP2008037343982.
  122. Mock,Philip W; Krueger, V,Rudolph Ernst; Bloom,Duane; Moore,Norman Bruce. Tractor with improved valve system. USP2009027493967.
  123. Veitsel, Andrey; Zhdanov, Alexey; Kirsanov, Alexander; Zhodzishsky, Mark I.; Veitsel, Victor A.; Orlovsky, Igor; Rubtsov, Dmitry. Universal digital channel for receiving signals of global navigation satellite systems. USP2010077764226.
  124. Krueger, V, Rudolph Ernst. Variable linkage assisted gripper. USP2010077748476.
  125. Krueger, V, Rudolph Ernst. Variable linkage assisted gripper. USP2011118061447.
  126. Boyle, John. Vessel for well intervention. USP2010017650944.
  127. Zazovsky,Alexander; Zhou,Jian; Del Campo,Christopher; Salamat,Golchehreh; Fu,Diankui; Lee,Jese C.. Water compatible hydraulic fluids. USP2007037185699.
  128. Goode, Peter A.; Gould, Andrew; Christie, Alan; Vise, Jr., Charles E.. Well having a self-contained inter vention system. USP2012058171989.
  129. Ludwig, Wesley Neil. Well tractor. USP2017109777545.
  130. AlDossary, Khalid Abdullah. Well tractor with active traction control. USP2015089097086.
  131. Tilton,Frederick T.; Brunnert,David J.. Wired casing. USP2007127303022.
  132. McInally, Gerald. Wireline tractor device. USP2012118302682.

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