|
| US4015673 | 22. März 1976 | 5. Apr. 1977 | Standard Oil Company (Indiana) | Directional drilling system |
| US4212352 | 8. Jan. 1979 | 15. Juli 1980 | Dresser Industries, Inc. | Gripping member for well tools |
| US4339008 | 9. Juni 1980 | 13. Juli 1982 | D. B. D. Drilling, Inc. | Well notching tool |
| US4384626 | 22. Febr. 1982 | 24. Mai 1983 | Smith International, Inc. | Clamp-on stabilizer |
| US4401170 | 21. Sept. 1981 | 30. Aug. 1983 | Reading & Bates Construction Co. | Apparatus for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| US4615401 | 24. Mai 1985 | 7. Okt. 1986 | Smith International | Automatic hydraulic thruster |
| US4683956 | 15. Okt. 1984 | 4. Aug. 1987 | | Method and apparatus for operating multiple tools in a well |
| US5205365 | 28. Febr. 1991 | 27. Apr. 1993 | Union Oil Company of California | Pressure assisted running of tubulars |
| US5311954 | 1. Okt. 1992 | 17. Mai 1994 | Union Oil Company of California | Pressure assisted running of tubulars |
| US5735357 | 10. Mai 1996 | 7. Apr. 1998 | Radius Metier, Inc. | Apparatus for and method of directional drilling |
| US6142245 | 5. Aug. 1998 | 7. Nov. 2000 | Shell Oil Company | Extended reach drilling system |
| US6296066 | 20. Mai 1998 | 2. Okt. 2001 | Halliburton Energy Services, Inc. | Well system |
| US6598687 | 28. März 2001 | 29. Juli 2003 | Halliburton Energy Services, Inc. | Three dimensional steerable system |
| US6607044 | 20. Dez. 1999 | 19. Aug. 2003 | Halliburton Energy Services, Inc. | Three dimensional steerable system and method for steering bit to drill borehole |
| US6644424 | 14. Sept. 2001 | 11. Nov. 2003 | Halliburton Energy Services, Inc. | Core barrel |
| US6659200 | 4. Okt. 2000 | 9. Dez. 2003 | Halliburton Energy Services, Inc. | Actuator assembly and method for actuating downhole assembly |
| US6868913 | 1. Okt. 2002 | 22. März 2005 | Halliburton Energy Services, Inc. | Apparatus and methods for installing casing in a borehole |
| US6923273 | 7. Okt. 2002 | 2. Aug. 2005 | Halliburton Energy Services, Inc. | Well system |
| US6926102 | 28. Febr. 2003 | 9. Aug. 2005 | Halliburton Energy Services, Inc. | Subsea controlled milling |
| US6935423 | 30. Apr. 2001 | 30. Aug. 2005 | Halliburton Energy Services, Inc. | Borehole retention device |
| US7134512 | 14. Juli 2003 | 14. Nov. 2006 | | Method of downhole drilling and apparatus therefor |
| US7172038 | 15. Nov. 2004 | 6. Febr. 2007 | Halliburton Energy Services, Inc. | Well system |
| US7195083 | 18. Nov. 2004 | 27. März 2007 | Halliburton Energy Services, Inc | Three dimensional steering system and method for steering bit to drill borehole |