|
| US3998743 | 7. Dez. 1973 | 21. Dez. 1976 | Union Oil Company of California | Method and solvent composition for stimulating the production of oil from a producing well |
| US4089703 | 23. Dez. 1976 | 16. Mai 1978 | White Chemical Company, Inc. | Hot detergent process |
| US4090562 | 29. Juli 1976 | 23. Mai 1978 | Union Oil Company of California | Method and solvent composition for stimulating the production of oil from a producing well |
| US4207193 | 24. März 1978 | 10. Juni 1980 | Halliburton Company | Methods and compositions for removing asphaltenic and paraffinic containing deposits |
| US4448253 | 10. März 1983 | 15. Mai 1984 | Shell Oil Company | Moderated borohydride-induced reservoir dewatering |
| US4455175 | 1. Aug. 1983 | 19. Juni 1984 | The Dow Chemical Company | Method for removing or retarding paraffin buildup on surfaces in contact with crude oil |
| US4536222 | 11. Mai 1984 | 20. Aug. 1985 | The Dow Chemical Company | Method for removing or retarding paraffin buildup on surfaces in contact with natural gas |
| US4663059 | 17. Febr. 1986 | 5. Mai 1987 | Halliburton Company | Composition and method for reducing sludging during the acidizing of formations containing sludging crude oils |
| US4669544 | 17. Apr. 1986 | 2. Juni 1987 | Dowell Schlumberger Incorporated | Reducing paraffin deposits on paraffin contaminated surfaces |
| US4934457 | 18. Juli 1989 | 19. Juni 1990 | | Composition and method for stimulating wells |
| US5120935 | 1. Okt. 1990 | 9. Juni 1992 | | Method and apparatus for oil well stimulation utilizing electrically heated solvents |
| US5183581 | 13. Apr. 1992 | 2. Febr. 1993 | Petroleo Brasileiro S.A. | Process for the dewaxing of producing formations |
| US5247994 | 6. Nov. 1992 | 28. Sept. 1993 | | Method of stimulating oil wells |
| US5400430 | 21. Jan. 1994 | 21. März 1995 | | Method for injection well stimulation |
| US6984614 | 10. Jan. 2005 | 10. Jan. 2006 | | Composition and method for removing deposits |
| US7296627 | 29. März 2005 | 20. Nov. 2007 | | Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells |
| US7318472 | 1. Febr. 2006 | 15. Jan. 2008 | Total Separation Solutions, LLC | In situ filter construction |
| US7497261 | 1. Okt. 2007 | 3. März 2009 | | Method for simultaneous removal of asphaltene and/or paraffin and scale from producing oil wells |
| US7754657 | 20. Juli 2006 | 13. Juli 2010 | INEOS USA LLC | Method for removing asphaltene deposits |
| US8101812 | 21. März 2008 | 24. Jan. 2012 | Green Source Energy LLC | Extraction of hydrocarbons from hydrocarbon-containing materials |