|
| US4649989 | 9. Jan. 1984 | 17. März 1987 | Brown Boveri Reaktor GmbH | Device for testing and/or repairing steam generator tubes |
| US5988719 | 5. März 1998 | 23. Nov. 1999 | Aeroquip-Vickers, Inc. | Internal pipe pulling device |
| US6742584 | 11. Juli 2001 | 1. Juni 2004 | Tesco Corporation | Apparatus for facilitating the connection of tubulars using a top drive |
| US7128161 | 20. Sept. 2005 | 31. Okt. 2006 | Weatherford/Lamb, Inc. | Apparatus and methods for facilitating the connection of tubulars using a top drive |
| US7191840 | 5. März 2004 | 20. März 2007 | Weatherford/Lamb, Inc. | Casing running and drilling system |
| US7213656 | 26. Apr. 2004 | 8. Mai 2007 | Weatherford/Lamb, Inc. | Apparatus and method for facilitating the connection of tubulars using a top drive |
| US7234542 | 9. Febr. 2006 | 26. Juni 2007 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7281587 | 30. März 2006 | 16. Okt. 2007 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
| US7284617 | 20. Mai 2004 | 23. Okt. 2007 | Weatherford/Lamb, Inc. | Casing running head |
| US7325610 | 5. März 2004 | 5. Febr. 2008 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
| US7353880 | 15. Nov. 2006 | 8. Apr. 2008 | Weatherford/Lamb, Inc. | Method and apparatus for connecting tubulars using a top drive |
| US7370707 | 5. Apr. 2004 | 13. Mai 2008 | Weatherford/Lamb, Inc. | Method and apparatus for handling wellbore tubulars |
| US7448456 | 1. Febr. 2006 | 11. Nov. 2008 | Weatherford/Lamb, Inc. | Adjustable rotating guides for spider or elevator |
| US7451826 | 15. Aug. 2006 | 18. Nov. 2008 | Weatherford/Lamb, Inc. | Apparatus for connecting tubulars using a top drive |
| US7503397 | 29. Juli 2005 | 17. März 2009 | Weatherford/Lamb, Inc. | Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| US7509722 | 5. März 2003 | 31. März 2009 | Weatherford/Lamb, Inc. | Positioning and spinning device |
| US7513300 | 20. März 2007 | 7. Apr. 2009 | Weatherford/Lamb, Inc. | Casing running and drilling system |
| US7617866 | 8. Sept. 2005 | 17. Nov. 2009 | Weatherford/Lamb, Inc. | Methods and apparatus for connecting tubulars using a top drive |
| US7654325 | 31. Okt. 2007 | 2. Febr. 2010 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
| US7665531 | 15. Nov. 2006 | 23. Febr. 2010 | Weatherford/Lamb, Inc. | Apparatus for facilitating the connection of tubulars using a top drive |
| US7669662 | 20. Juli 2005 | 2. März 2010 | Weatherford/Lamb, Inc. | Casing feeder |
| US7690430 | 27. März 2006 | 6. Apr. 2010 | | Well casing extraction accessories and method |
| US7694744 | 12. Jan. 2006 | 13. Apr. 2010 | Weatherford/Lamb, Inc. | One-position fill-up and circulating tool and method |
| US7712523 | 14. März 2003 | 11. Mai 2010 | Weatherford/Lamb, Inc. | Top drive casing system |
| US7730965 | 30. Jan. 2006 | 8. Juni 2010 | Weatherford/Lamb, Inc. Shell Oil Company | Retractable joint and cementing shoe for use in completing a wellbore |
| US7757759 | 27. Apr. 2007 | 20. Juli 2010 | Weatherford/Lamb, Inc. | Torque sub for use with top drive |
| US7793719 | 31. Okt. 2007 | 14. Sept. 2010 | Weatherford/Lamb, Inc. | Top drive casing system |
| US7845418 | 18. Jan. 2006 | 7. Dez. 2010 | Weatherford/Lamb, Inc. | Top drive torque booster |
| US7857052 | 11. Mai 2007 | 28. Dez. 2010 | Weatherford/Lamb, Inc. | Stage cementing methods used in casing while drilling |
| US7874352 | 12. Dez. 2006 | 25. Jan. 2011 | Weatherford/Lamb, Inc. | Apparatus for gripping a tubular on a drilling rig |
| US7882902 | 15. Nov. 2007 | 8. Febr. 2011 | Weatherford/Lamb, Inc. | Top drive interlock |
| US7896084 | 15. Okt. 2007 | 1. März 2011 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
| US7918273 | 23. Jan. 2003 | 5. Apr. 2011 | Weatherford/Lamb, Inc. | Top drive casing system |
| US7938201 | 28. Febr. 2006 | 10. Mai 2011 | Weatherford/Lamb, Inc. | Deep water drilling with casing |