|
| US3951456 | 3. Jan. 1975 | 20. Apr. 1976 | Occidental Petroleum Corporation | Process for effecting even retort working fluid flow throughout an in situ retort containing carbonaceous deposits |
| US3980339 | 17. Apr. 1975 | 14. Sept. 1976 | Geokinetics, Inc. | Process for recovery of carbonaceous materials from subterranean deposits |
| US4007963 | 30. März 1976 | 15. Febr. 1977 | Occidental Petroleum Corporation | Oil collection and recovery system for in situ oil shale retort |
| US4010800 | 8. März 1976 | 8. März 1977 | In Situ Technology, Inc. | Producing thin seams of coal in situ |
| US4018280 | 10. Dez. 1975 | 19. Apr. 1977 | Mobil Oil Corporation | Process for in situ retorting of oil shale |
| US4025115 | 14. Apr. 1975 | 24. Mai 1977 | Occidental Petroleum Corporation | Method of enhancing recovery of oil from pillars adjacent in situ oil shaft retort |
| US4027917 | 16. Mai 1975 | 7. Juni 1977 | Occidental Petroleum Corporation | Method for igniting the top surface of oil shale in an in situ retort |
| US4036299 | 22. Sept. 1975 | 19. Juli 1977 | Occidental Oil Shale, Inc. | Enriching off gas from oil shale retort |
| US4043595 | 11. Aug. 1975 | 23. Aug. 1977 | Occidental Oil Shale, Inc. | In situ recovery of shale oil |
| US4045085 | 14. Apr. 1975 | 30. Aug. 1977 | Occidental Oil Shale, Inc. | Fracturing of pillars for enhancing recovery of oil from in situ oil shale retort |
| US4047760 | 28. Nov. 1975 | 13. Sept. 1977 | Occidental Oil Shale, Inc. | In situ recovery of shale oil |
| US4072350 | 27. Jan. 1977 | 7. Febr. 1978 | Occidental Oil Shale, Inc. | Multi-stage method of operating an in situ oil shale retort |
| US4076312 | 30. Juli 1976 | 28. Febr. 1978 | Occidental Oil Shale, Inc. | Method and apparatus for retorting oil shale at subatmospheric pressure |
| US4082145 | 18. Mai 1977 | 4. Apr. 1978 | Occidental Oil Shale, Inc. | Determining the locus of a processing zone in an in situ oil shale retort by sound monitoring |
| US4082146 | 24. März 1977 | 4. Apr. 1978 | Occidental Oil Shale, Inc. | Low temperature oxidation of hydrogen sulfide in the presence of oil shale |
| US4086962 | 24. März 1977 | 2. Mai 1978 | Occidental Oil Shale, Inc. | Decreasing hydrogen sulfide concentration of a gas |
| US4086963 | 24. März 1977 | 2. Mai 1978 | Occidental Oil Shale, Inc. | Method of oxidizing hydrogen sulfide |
| US4089375 | 13. Mai 1977 | 16. Mai 1978 | Occidental Oil Shale, Inc. | In situ retorting with water vaporized in situ |
| US4091869 | 7. Sept. 1976 | 30. Mai 1978 | Exxon Production Research Company | In situ process for recovery of carbonaceous materials from subterranean deposits |
| US4093026 | 15. Apr. 1977 | 6. Juni 1978 | Occidental Oil Shale, Inc. | Removal of sulfur dioxide from process gas using treated oil shale and water |
| US4105251 | 29. Juli 1977 | 8. Aug. 1978 | Standard Oil Company (Indiana) | Dispersion of catalysts with explosives for in situ mining of carbonaceous minerals |
| US4106814 | 15. Juli 1977 | 15. Aug. 1978 | Occidental Oil Shale, Inc. | Method of forming in situ oil shale retorts |
| US4109719 | 5. Dez. 1977 | 29. Aug. 1978 | Continental Oil Company | Method for creating a permeable fragmented zone within a subterranean carbonaceous deposit for in situ coal gasification |
| US4117886 | 19. Sept. 1977 | 3. Okt. 1978 | Standard Oil Company (Indiana) | Oil shale retorting and off-gas purification |
| US4119345 | 4. Apr. 1977 | 10. Okt. 1978 | Occidental Oil Shale, Inc. | In situ oil shale retorting process using introduction of gas at an intermediate location |
| US4120355 | 30. Aug. 1977 | 17. Okt. 1978 | Standard Oil Company (Indiana) | Method for providing fluid communication for in situ shale retort |
| US4121663 | 24. März 1977 | 24. Okt. 1978 | Occidental Oil Shale, Inc. | Removing hydrogen sulfide from a gas |
| US4125157 | 12. Juli 1977 | 14. Nov. 1978 | Occidental Oil Shale, Inc. | Removing sulfur dioxide from gas streams with retorted oil shale |
| US4131416 | 30. Aug. 1977 | 26. Dez. 1978 | Standard Oil Company (Indiana) | Slurry backfilling of in situ oil shale retort |
| US4140181 | 9. Dez. 1977 | 20. Febr. 1979 | Occidental Oil Shale, Inc. | Two-stage removal of sulfur dioxide from process gas using treated oil shale |
| US4140343 | 14. Febr. 1977 | 20. Febr. 1979 | Occidental Oil Shale, Inc. | Gas withdrawal from an in situ oil shale retort |
| US4147388 | 5. Jan. 1978 | 3. Apr. 1979 | Occidental Oil Shale, Inc. | Method for in situ recovery of liquid and gaseous products from oil shale deposits |
| US4148358 | 16. Dez. 1977 | 10. Apr. 1979 | Occidental Research Corporation | Oxidizing hydrocarbons, hydrogen, and carbon monoxide |
| US4148529 | 16. Jan. 1978 | 10. Apr. 1979 | Occidental Oil Shale, Inc. | Doping a retort to determine the locus of a processing zone |
| US4150722 | 10. März 1978 | 24. Apr. 1979 | Occidental Oil Shale, Inc. | Determining the locus of a retorting zone in an oil shale retort by rate of shale oil production |
| US4156461 | 16. Dez. 1977 | 29. Mai 1979 | Occidental Oil Shale, Inc. | Decreasing hydrocarbon, hydrogen and carbon monoxide concentration of a gas |
| US4158467 | 30. Dez. 1977 | 19. Juni 1979 | Gulf Oil Corporation | Process for recovering shale oil |
| US4163475 | 21. Apr. 1978 | 7. Aug. 1979 | Occidental Oil Shale, Inc. | Determining the locus of a processing zone in an in situ oil shale retort |
| US4171146 | 23. Jan. 1978 | 16. Okt. 1979 | Occidental Research Corporation | Recovery of shale oil and magnesia from oil shale |
| US4181361 | 6. Dez. 1976 | 1. Jan. 1980 | Occidental Oil Shale, Inc. | Gas collection system for oil shale retort |
| US4191251 | 1. Aug. 1978 | 4. März 1980 | Occidental Oil Shale, Inc. | Process for recovering carbonaceous values from in situ oil shale retorting |
| US4192381 | 28. Nov. 1978 | 11. März 1980 | Occidental Oil Shale, Inc. | In situ retorting with high temperature oxygen supplying gas |
| US4192554 | 31. Juli 1978 | 11. März 1980 | Occidental Oil Shale, Inc. | Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort |
| US4210366 | 13. Nov. 1978 | 1. Juli 1980 | Occidental Oil Shale, Inc. | Method of detonating explosives for fragmenting oil shale formation toward a vertical free face |
| US4230367 | 7. Apr. 1978 | 28. Okt. 1980 | Science Applications, Inc. | Method of obtaining oil from oil shale deposits |
| US4231617 | 14. Dez. 1978 | 4. Nov. 1980 | Gulf Oil Corporation | Consolidation of in-situ retort |
| US4234230 | 11. Juli 1979 | 18. Nov. 1980 | The Superior Oil Company | In situ processing of mined oil shale |
| US4246965 | 4. Sept. 1979 | 27. Jan. 1981 | Occidental Oil Shale, Inc. | Method for operating an in situ oil shale retort having channelling |
| US4249603 | 26. Dez. 1978 | 10. Febr. 1981 | Occidental Oil Shale, Inc. | Doping a retort with radioactive nuclides to determine the locus of a processing zone |
| US4271904 | 17. Juli 1978 | 9. Juni 1981 | Standard Oil Company (Indiana) | Method for controlling underground combustion |
| US4290649 | 7. Nov. 1979 | 22. Sept. 1981 | Occidental Oil Shale, Inc. | Method for explosively expanding a pillar for forming an in situ oil shale retort |
| US4303273 | 2. Nov. 1979 | 1. Dez. 1981 | Occidental Oil Shale, Inc. | In situ oil shale retort with a generally T-shaped vertical cross section |
| US4323120 | 1. Aug. 1980 | 6. Apr. 1982 | Standard Oil Company (Indiana) | Method for controlling underground combustion |
| US4323121 | 1. Aug. 1980 | 6. Apr. 1982 | Standard Oil Company (Indiana) | Method for controlling underground combustion |
| US4328863 | 14. März 1980 | 11. Mai 1982 | Standard Oil Company (Indiana) | In situ retorting of oil shale |
| US4333684 | 2. Okt. 1980 | 8. Juni 1982 | Occidental Oil Shale Inc. | Method of uniform rubblization for limited void volume blasting |
| US4336966 | 14. Okt. 1980 | 29. Juni 1982 | Occidental Oil Shale, Inc. | Cratering in the deep cratering region to form an in situ oil shale retort |
| US4343360 | 1. Aug. 1980 | 10. Aug. 1982 | Standard Oil Company (Indiana) | Method for controlling underground combustion |
| US4343361 | 1. Aug. 1980 | 10. Aug. 1982 | Standard Oil Company (Indiana) | Method for controlling underground combustion |
| US4344484 | 18. Dez. 1980 | 17. Aug. 1982 | Occidental Oil Shale, Inc. | Determining the locus of a processing zone in an in situ oil shale retort through a well in the formation adjacent the retort |
| US4353598 | 18. Apr. 1980 | 12. Okt. 1982 | Occidental Oil Shale, Inc. | Method of blasting pillars with vertical blastholes |
| US4378949 | 27. Apr. 1981 | 5. Apr. 1983 | Gulf Oil Corporation | Production of shale oil by in-situ retorting of oil shale |
| US4379591 | 21. Aug. 1980 | 12. Apr. 1983 | Occidental Oil Shale, Inc. | Two-stage oil shale retorting process and disposal of spent oil shale |
| US4383912 | 2. Juni 1981 | 17. Mai 1983 | Bureau de Recherches et de Participations Minieres | Processes of pyrolysis and treatment of pyrolysis residues |
| US4423907 | 19. Sept. 1977 | 3. Jan. 1984 | Occidental Oil Shale, Inc. | In situ recovery of shale oil |
| US4425967 | 7. Okt. 1981 | 17. Jan. 1984 | Standard Oil Company (Indiana) | Ignition procedure and process for in situ retorting of oil shale |
| US4443036 | 9. Juli 1981 | 17. Apr. 1984 | Occidental Oil Shale, Inc. | Explosive expansion of formation in lifts for forming an in situ oil shale retort |
| US4449753 | 1. Juni 1982 | 22. Mai 1984 | Occidental Oil Shale, Inc. | Method for bulking full a retort |
| US4453769 | 18. Febr. 1982 | 12. Juni 1984 | Occidental Oil Shale, Inc. | In situ oil shale retort having horizontal voids with side pillars |
| US4560206 | 26. Juli 1983 | 24. Dez. 1985 | Occidental Oil Shale, Inc. | Method for explosively expanding a pillar |
| US4595056 | 26. März 1984 | 17. Juni 1986 | Occidental Oil Shale, Inc. | Method for fully retorting an in situ oil shale retort |
| US5372708 | 13. Jan. 1993 | 13. Dez. 1994 | A.F.S.K. Electrical & Control Engineering Ltd. | Method for the exploitation of oil shales |
| US5645322 | 14. März 1995 | 8. Juli 1997 | Tarim Associates for Scientific Mineral & Oil Exploration | In-situ chemical reactor for recovery of metals and salts |
| US6581684 | 24. Apr. 2001 | 24. Juni 2003 | Shell Oil Company | In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids |
| US6588503 | 24. Apr. 2001 | 8. Juli 2003 | Shell Oil Company | In Situ thermal processing of a coal formation to control product composition |
| US6588504 | 24. Apr. 2001 | 8. Juli 2003 | Shell Oil Company | In situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids |
| US6591906 | 24. Apr. 2001 | 15. Juli 2003 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content |
| US6591907 | 24. Apr. 2001 | 15. Juli 2003 | Shell Oil Company | In situ thermal processing of a coal formation with a selected vitrinite reflectance |
| US6607033 | 24. Apr. 2001 | 19. Aug. 2003 | Shell Oil Company | In Situ thermal processing of a coal formation to produce a condensate |
| US6609570 | 24. Apr. 2001 | 26. Aug. 2003 | Shell Oil Company | In situ thermal processing of a coal formation and ammonia production |
| US6688387 | 24. Apr. 2001 | 10. Febr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate |
| US6698515 | 24. Apr. 2001 | 2. März 2004 | Shell Oil Company | In situ thermal processing of a coal formation using a relatively slow heating rate |
| US6702016 | 24. Apr. 2001 | 9. März 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer |
| US6708758 | 24. Apr. 2001 | 23. März 2004 | Shell Oil Company | In situ thermal processing of a coal formation leaving one or more selected unprocessed areas |
| US6712135 | 24. Apr. 2001 | 30. März 2004 | Shell Oil Company | In situ thermal processing of a coal formation in reducing environment |
| US6712136 | 24. Apr. 2001 | 30. März 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing |
| US6712137 | 24. Apr. 2001 | 30. März 2004 | Shell Oil Company | In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material |
| US6715546 | 24. Apr. 2001 | 6. Apr. 2004 | Shell Oil Company | In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore |
| US6715547 | 24. Apr. 2001 | 6. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation |
| US6715548 | 24. Apr. 2001 | 6. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids |
| US6715549 | 24. Apr. 2001 | 6. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio |
| US6719047 | 24. Apr. 2001 | 13. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment |
| US6722429 | 24. Apr. 2001 | 20. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas |
| US6722430 | 24. Apr. 2001 | 20. Apr. 2004 | Shell Oil Company | In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio |
| US6722431 | 24. Apr. 2001 | 20. Apr. 2004 | Shell Oil Company | In situ thermal processing of hydrocarbons within a relatively permeable formation |
| US6725920 | 24. Apr. 2001 | 27. Apr. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products |
| US6725921 | 24. Apr. 2001 | 27. Apr. 2004 | Shell Oil Company | In situ thermal processing of a coal formation by controlling a pressure of the formation |
| US6725928 | 24. Apr. 2001 | 27. Apr. 2004 | Shell Oil Company | In situ thermal processing of a coal formation using a distributed combustor |
| US6729395 | 24. Apr. 2001 | 4. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells |
| US6729396 | 24. Apr. 2001 | 4. Mai 2004 | Shell Oil Company | In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range |
| US6729397 | 24. Apr. 2001 | 4. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance |
| US6729401 | 24. Apr. 2001 | 4. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation and ammonia production |
| US6732794 | 24. Apr. 2001 | 11. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content |
| US6732795 | 24. Apr. 2001 | 11. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material |
| US6732796 | 24. Apr. 2001 | 11. Mai 2004 | Shell Oil Company | In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio |
| US6736215 | 24. Apr. 2001 | 18. Mai 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration |
| US6739393 | 24. Apr. 2001 | 25. Mai 2004 | Shell Oil Company | In situ thermal processing of a coal formation and tuning production |
| US6739394 | 24. Apr. 2001 | 25. Mai 2004 | Shell Oil Company | Production of synthesis gas from a hydrocarbon containing formation |
| US6742587 | 24. Apr. 2001 | 1. Juni 2004 | Shell Oil Company | In situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation |
| US6742588 | 24. Apr. 2001 | 1. Juni 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content |
| US6742589 | 24. Apr. 2001 | 1. Juni 2004 | Shell Oil Company | In situ thermal processing of a coal formation using repeating triangular patterns of heat sources |
| US6742593 | 24. Apr. 2001 | 1. Juni 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation |
| US6745831 | 24. Apr. 2001 | 8. Juni 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation |
| US6745832 | 24. Apr. 2001 | 8. Juni 2004 | Shell Oil Company | Situ thermal processing of a hydrocarbon containing formation to control product composition |
| US6745837 | 24. Apr. 2001 | 8. Juni 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate |
| US6749021 | 24. Apr. 2001 | 15. Juni 2004 | Shell Oil Company | In situ thermal processing of a coal formation using a controlled heating rate |
| US6752210 | 24. Apr. 2001 | 22. Juni 2004 | Shell Oil Company | In situ thermal processing of a coal formation using heat sources positioned within open wellbores |
| US6758268 | 24. Apr. 2001 | 6. Juli 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate |
| US6761216 | 24. Apr. 2001 | 13. Juli 2004 | Shell Oil Company | In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas |
| US6763886 | 24. Apr. 2001 | 20. Juli 2004 | Shell Oil Company | In situ thermal processing of a coal formation with carbon dioxide sequestration |
| US6769483 | 24. Apr. 2001 | 3. Aug. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources |
| US6769485 | 24. Apr. 2001 | 3. Aug. 2004 | Shell Oil Company | In situ production of synthesis gas from a coal formation through a heat source wellbore |
| US6789625 | 24. Apr. 2001 | 14. Sept. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources |
| US6805195 | 24. Apr. 2001 | 19. Okt. 2004 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas |
| US6820688 | 24. Apr. 2001 | 23. Nov. 2004 | Shell Oil Company | In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio |
| US6866097 | 24. Apr. 2001 | 15. März 2005 | Shell Oil Company | In situ thermal processing of a coal formation to increase a permeability/porosity of the formation |
| US6871707 | 24. Apr. 2001 | 29. März 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration |
| US6877554 | 24. Apr. 2001 | 12. Apr. 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control |
| US6877555 | 24. Apr. 2002 | 12. Apr. 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation while inhibiting coking |
| US6880633 | 24. Apr. 2002 | 19. Apr. 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation to produce a desired product |
| US6880635 | 24. Apr. 2001 | 19. Apr. 2005 | Shell Oil Company | In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio |
| US6889769 | 24. Apr. 2001 | 10. Mai 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected moisture content |
| US6896053 | 24. Apr. 2001 | 24. Mai 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources |
| US6902003 | 24. Apr. 2001 | 7. Juni 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content |
| US6902004 | 24. Apr. 2001 | 7. Juni 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a movable heating element |
| US6910536 | 24. Apr. 2001 | 28. Juni 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| US6913078 | 24. Apr. 2001 | 5. Juli 2005 | Shell Oil Company | In Situ thermal processing of hydrocarbons within a relatively impermeable formation |
| US6915850 | 24. Apr. 2002 | 12. Juli 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation having permeable and impermeable sections |
| US6918442 | 24. Apr. 2002 | 19. Juli 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation in a reducing environment |
| US6918443 | 24. Apr. 2002 | 19. Juli 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range |
| US6918444 | 19. März 2001 | 19. Juli 2005 | ExxonMobil Upstream Research Company | Method for production of hydrocarbons from organic-rich rock |
| US6923257 | 24. Apr. 2002 | 2. Aug. 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation to produce a condensate |
| US6923258 | 12. Juni 2003 | 2. Aug. 2005 | Shell Oil Company | In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content |
| US6929067 | 24. Apr. 2002 | 16. Aug. 2005 | Shell Oil Company | Heat sources with conductive material for in situ thermal processing of an oil shale formation |
| US6932155 | 24. Okt. 2002 | 23. Aug. 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| US6948562 | 24. Apr. 2002 | 27. Sept. 2005 | Shell Oil Company | Production of a blending agent using an in situ thermal process in a relatively permeable formation |
| US6948563 | 24. Apr. 2001 | 27. Sept. 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content |
| US6951247 | 24. Apr. 2002 | 4. Okt. 2005 | Shell Oil Company | In situ thermal processing of an oil shale formation using horizontal heat sources |
| US6953087 | 24. Apr. 2001 | 11. Okt. 2005 | Shell Oil Company | Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation |
| US6959761 | 24. Apr. 2001 | 1. Nov. 2005 | Shell Oil Company | In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells |
| US6964300 | 24. Apr. 2002 | 15. Nov. 2005 | Shell Oil Company | In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore |
| US6966372 | 24. Apr. 2001 | 22. Nov. 2005 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids |
| US6966374 | 24. Apr. 2002 | 22. Nov. 2005 | Shell Oil Company | In situ thermal recovery from a relatively permeable formation using gas to increase mobility |
| US6969123 | 24. Okt. 2002 | 29. Nov. 2005 | Shell Oil Company | Upgrading and mining of coal |
| US6973967 | 24. Apr. 2001 | 13. Dez. 2005 | Shell Oil Company | Situ thermal processing of a coal formation using pressure and/or temperature control |
| US6981548 | 24. Apr. 2002 | 3. Jan. 2006 | Shell Oil Company | In situ thermal recovery from a relatively permeable formation |
| US6991031 | 24. Apr. 2001 | 31. Jan. 2006 | Shell Oil Company | In situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products |
| US6991032 | 24. Apr. 2002 | 31. Jan. 2006 | Shell Oil Company | In situ thermal processing of an oil shale formation using a pattern of heat sources |
| US6991033 | 24. Apr. 2002 | 31. Jan. 2006 | Shell Oil Company | In situ thermal processing while controlling pressure in an oil shale formation |
| US6991036 | 24. Apr. 2002 | 31. Jan. 2006 | Shell Oil Company | Thermal processing of a relatively permeable formation |
| US6991045 | 24. Okt. 2002 | 31. Jan. 2006 | Shell Oil Company | Forming openings in a hydrocarbon containing formation using magnetic tracking |
| US6994160 | 24. Apr. 2001 | 7. Febr. 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range |
| US6994161 | 24. Apr. 2001 | 7. Febr. 2006 | | In situ thermal processing of a coal formation with a selected moisture content |
| US6994168 | 24. Apr. 2001 | 7. Febr. 2006 | | In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio |
| US6994169 | 24. Apr. 2002 | 7. Febr. 2006 | Shell Oil Company | In situ thermal processing of an oil shale formation with a selected property |
| US6997255 | 24. Apr. 2001 | 14. Febr. 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation in a reducing environment |
| US6997518 | 24. Apr. 2002 | 14. Febr. 2006 | Shell Oil Company | In situ thermal processing and solution mining of an oil shale formation |
| US7004247 | 24. Apr. 2002 | 28. Febr. 2006 | Shell Oil Company | Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation |
| US7004251 | 24. Apr. 2002 | 28. Febr. 2006 | Shell Oil Company | In situ thermal processing and remediation of an oil shale formation |
| US7011154 | 24. Okt. 2002 | 14. März 2006 | Shell Oil Company | In situ recovery from a kerogen and liquid hydrocarbon containing formation |
| US7013972 | 24. Apr. 2002 | 21. März 2006 | Shell Oil Company | In situ thermal processing of an oil shale formation using a natural distributed combustor |
| US7017661 | 24. Apr. 2001 | 28. März 2006 | Shell Oil Company | Production of synthesis gas from a coal formation |
| US7032660 | 24. Apr. 2002 | 25. Apr. 2006 | Shell Oil Company | In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation |
| US7036583 | 24. Apr. 2001 | 2. Mai 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation |
| US7040398 | 24. Apr. 2002 | 9. Mai 2006 | Shell Oil Company | In situ thermal processing of a relatively permeable formation in a reducing environment |
| US7040399 | 24. Apr. 2002 | 9. Mai 2006 | Shell Oil Company | In situ thermal processing of an oil shale formation using a controlled heating rate |
| US7040400 | 24. Apr. 2002 | 9. Mai 2006 | Shell Oil Company | In situ thermal processing of a relatively impermeable formation using an open wellbore |
| US7051807 | 24. Apr. 2002 | 30. Mai 2006 | Shell Oil Company | In situ thermal recovery from a relatively permeable formation with quality control |
| US7051808 | 24. Okt. 2002 | 30. Mai 2006 | Shell Oil Company | Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
| US7051811 | 24. Apr. 2002 | 30. Mai 2006 | Shell Oil Company | In situ thermal processing through an open wellbore in an oil shale formation |
| US7055600 | 24. Apr. 2002 | 6. Juni 2006 | Shell Oil Company | In situ thermal recovery from a relatively permeable formation with controlled production rate |
| US7063145 | 24. Okt. 2002 | 20. Juni 2006 | Shell Oil Company | Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| US7066254 | 24. Okt. 2002 | 27. Juni 2006 | Shell Oil Company | In situ thermal processing of a tar sands formation |
| US7066257 | 24. Okt. 2002 | 27. Juni 2006 | Shell Oil Company | In situ recovery from lean and rich zones in a hydrocarbon containing formation |
| US7073578 | 24. Okt. 2003 | 11. Juli 2006 | Shell Oil Company | Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation |
| US7077198 | 24. Okt. 2002 | 18. Juli 2006 | Shell Oil Company | In situ recovery from a hydrocarbon containing formation using barriers |
| US7077199 | 24. Okt. 2002 | 18. Juli 2006 | Shell Oil Company | In situ thermal processing of an oil reservoir formation |
| US7086465 | 24. Okt. 2002 | 8. Aug. 2006 | Shell Oil Company | In situ production of a blending agent from a hydrocarbon containing formation |
| US7086468 | 24. Apr. 2001 | 8. Aug. 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores |
| US7090013 | 24. Okt. 2002 | 15. Aug. 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation to produce heated fluids |
| US7096941 | 24. Apr. 2001 | 29. Aug. 2006 | Shell Oil Company | In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer |
| US7096942 | 24. Apr. 2002 | 29. Aug. 2006 | Shell Oil Company | In situ thermal processing of a relatively permeable formation while controlling pressure |
| US7096953 | 24. Apr. 2001 | 29. Aug. 2006 | Shell Oil Company | In situ thermal processing of a coal formation using a movable heating element |
| US7100994 | 24. Okt. 2002 | 5. Sept. 2006 | Shell Oil Company | Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation |
| US7104319 | 24. Okt. 2002 | 12. Sept. 2006 | Shell Oil Company | In situ thermal processing of a heavy oil diatomite formation |
| US7114566 | 24. Okt. 2002 | 3. Okt. 2006 | Shell Oil Company | In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| US7121341 | 24. Okt. 2003 | 17. Okt. 2006 | Shell Oil Company | Conductor-in-conduit temperature limited heaters |
| US7121342 | 23. Apr. 2004 | 17. Okt. 2006 | Shell Oil Company | Thermal processes for subsurface formations |
| US7128153 | 24. Okt. 2002 | 31. Okt. 2006 | Shell Oil Company | Treatment of a hydrocarbon containing formation after heating |
| US7156176 | 24. Okt. 2002 | 2. Jan. 2007 | Shell Oil Company | Installation and use of removable heaters in a hydrocarbon containing formation |
| US7165615 | 24. Okt. 2002 | 23. Jan. 2007 | Shell Oil Company | In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden |
| US7219734 | 24. Okt. 2003 | 22. Mai 2007 | Shell Oil Company | Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation |
| US7225866 | 31. Jan. 2006 | 5. Juni 2007 | Shell Oil Company | In situ thermal processing of an oil shale formation using a pattern of heat sources |
| US7320364 | 22. Apr. 2005 | 22. Jan. 2008 | Shell Oil Company | Inhibiting reflux in a heated well of an in situ conversion system |
| US7353872 | 22. Apr. 2005 | 8. Apr. 2008 | Shell Oil Company | Start-up of temperature limited heaters using direct current (DC) |
| US7357180 | 22. Apr. 2005 | 15. Apr. 2008 | Shell Oil Company | Inhibiting effects of sloughing in wellbores |
| US7360588 | 17. Okt. 2006 | 22. Apr. 2008 | Shell Oil Company | Thermal processes for subsurface formations |
| US7370704 | 22. Apr. 2005 | 13. Mai 2008 | Shell Oil Company | Triaxial temperature limited heater |
| US7383877 | 22. Apr. 2005 | 10. Juni 2008 | Shell Oil Company | Temperature limited heaters with thermally conductive fluid used to heat subsurface formations |
| US7424915 | 22. Apr. 2005 | 16. Sept. 2008 | Shell Oil Company | Vacuum pumping of conductor-in-conduit heaters |
| US7431076 | 22. Apr. 2005 | 7. Okt. 2008 | Shell Oil Company | Temperature limited heaters using modulated DC power |
| US7435037 | 21. Apr. 2006 | 14. Okt. 2008 | Shell Oil Company | Low temperature barriers with heat interceptor wells for in situ processes |
| US7461691 | 23. Jan. 2007 | 9. Dez. 2008 | Shell Oil Company | In situ recovery from a hydrocarbon containing formation |
| US7481274 | 22. Apr. 2005 | 27. Jan. 2009 | Shell Oil Company | Temperature limited heaters with relatively constant current |
| US7490665 | 22. Apr. 2005 | 17. Febr. 2009 | Shell Oil Company | Variable frequency temperature limited heaters |
| US7500528 | 21. Apr. 2006 | 10. März 2009 | Shell Oil Company | Low temperature barrier wellbores formed using water flushing |
| US7510000 | 22. Apr. 2005 | 31. März 2009 | Shell Oil Company | Reducing viscosity of oil for production from a hydrocarbon containing formation |
| US7527094 | 21. Apr. 2006 | 5. Mai 2009 | Shell Oil Company | Double barrier system for an in situ conversion process |
| US7533719 | 20. Apr. 2007 | 19. Mai 2009 | Shell Oil Company | Wellhead with non-ferromagnetic materials |
| US7540324 | 19. Okt. 2007 | 2. Juni 2009 | Shell Oil Company | Heating hydrocarbon containing formations in a checkerboard pattern staged process |
| US7546873 | 21. Apr. 2006 | 16. Juni 2009 | Shell Oil Company | Low temperature barriers for use with in situ processes |
| US7549470 | 20. Okt. 2006 | 23. Juni 2009 | Shell Oil Company | Solution mining and heating by oxidation for treating hydrocarbon containing formations |
| US7556095 | 20. Okt. 2006 | 7. Juli 2009 | Shell Oil Company | Solution mining dawsonite from hydrocarbon containing formations with a chelating agent |
| US7556096 | 20. Okt. 2006 | 7. Juli 2009 | Shell Oil Company | Varying heating in dawsonite zones in hydrocarbon containing formations |
| US7559367 | 20. Okt. 2006 | 14. Juli 2009 | Shell Oil Company | Temperature limited heater with a conduit substantially electrically isolated from the formation |
| US7559368 | 20. Okt. 2006 | 14. Juli 2009 | Shell Oil Company | Solution mining systems and methods for treating hydrocarbon containing formations |
| US7562706 | 20. Okt. 2006 | 21. Juli 2009 | Shell Oil Company | Systems and methods for producing hydrocarbons from tar sands formations |
| US7562707 | 19. Okt. 2007 | 21. Juli 2009 | Shell Oil Company | Heating hydrocarbon containing formations in a line drive staged process |
| US7575052 | 21. Apr. 2006 | 18. Aug. 2009 | Shell Oil Company | In situ conversion process utilizing a closed loop heating system |
| US7575053 | 21. Apr. 2006 | 18. Aug. 2009 | Shell Oil Company | Low temperature monitoring system for subsurface barriers |
| US7581589 | 20. Okt. 2006 | 1. Sept. 2009 | Shell Oil Company | Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid |
| US7584789 | 20. Okt. 2006 | 8. Sept. 2009 | Shell Oil Company | Methods of cracking a crude product to produce additional crude products |
| US7591310 | 20. Okt. 2006 | 22. Sept. 2009 | Shell Oil Company | Methods of hydrotreating a liquid stream to remove clogging compounds |
| US7597147 | 20. Apr. 2007 | 6. Okt. 2009 | Shell Oil Company | Temperature limited heaters using phase transformation of ferromagnetic material |
| US7610962 | 20. Apr. 2007 | 3. Nov. 2009 | Shell Oil Company | Sour gas injection for use with in situ heat treatment |
| US7631689 | 20. Apr. 2007 | 15. Dez. 2009 | Shell Oil Company | Sulfur barrier for use with in situ processes for treating formations |
| US7631690 | 19. Okt. 2007 | 15. Dez. 2009 | Shell Oil Company | Heating hydrocarbon containing formations in a spiral startup staged sequence |
| US7635023 | 20. Apr. 2007 | 22. Dez. 2009 | Shell Oil Company | Time sequenced heating of multiple layers in a hydrocarbon containing formation |
| US7635024 | 19. Okt. 2007 | 22. Dez. 2009 | Shell Oil Company | Heating tar sands formations to visbreaking temperatures |
| US7635025 | 20. Okt. 2006 | 22. Dez. 2009 | Shell Oil Company | Cogeneration systems and processes for treating hydrocarbon containing formations |
| US7640980 | 7. Apr. 2008 | 5. Jan. 2010 | Shell Oil Company | Thermal processes for subsurface formations |
| US7644765 | 19. Okt. 2007 | 12. Jan. 2010 | Shell Oil Company | Heating tar sands formations while controlling pressure |
| US7673681 | 19. Okt. 2007 | 9. März 2010 | Shell Oil Company | Treating tar sands formations with karsted zones |
| US7673786 | 20. Apr. 2007 | 9. März 2010 | Shell Oil Company | Welding shield for coupling heaters |
| US7677310 | 19. Okt. 2007 | 16. März 2010 | Shell Oil Company | Creating and maintaining a gas cap in tar sands formations |
| US7677314 | 19. Okt. 2007 | 16. März 2010 | Shell Oil Company | Method of condensing vaporized water in situ to treat tar sands formations |
| US7681647 | 19. Okt. 2007 | 23. März 2010 | Shell Oil Company | Method of producing drive fluid in situ in tar sands formations |
| US7683296 | 20. Apr. 2007 | 23. März 2010 | Shell Oil Company | Adjusting alloy compositions for selected properties in temperature limited heaters |
| US7703513 | 19. Okt. 2007 | 27. Apr. 2010 | Shell Oil Company | Wax barrier for use with in situ processes for treating formations |
| US7717171 | 19. Okt. 2007 | 18. Mai 2010 | Shell Oil Company | Moving hydrocarbons through portions of tar sands formations with a fluid |
| US7730945 | 19. Okt. 2007 | 8. Juni 2010 | Shell Oil Company | Using geothermal energy to heat a portion of a formation for an in situ heat treatment process |
| US7730946 | 19. Okt. 2007 | 8. Juni 2010 | Shell Oil Company | Treating tar sands formations with dolomite |
| US7730947 | 19. Okt. 2007 | 8. Juni 2010 | Shell Oil Company | Creating fluid injectivity in tar sands formations |
| US7735935 | 1. Juni 2007 | 15. Juni 2010 | Shell Oil Company | In situ thermal processing of an oil shale formation containing carbonate minerals |
| US7785427 | 20. Apr. 2007 | 31. Aug. 2010 | Shell Oil Company | High strength alloys |
| US7793722 | 20. Apr. 2007 | 14. Sept. 2010 | Shell Oil Company | Non-ferromagnetic overburden casing |
| US7798220 | 18. Apr. 2008 | 21. Sept. 2010 | Shell Oil Company | In situ heat treatment of a tar sands formation after drive process treatment |
| US7798221 | 31. Mai 2007 | 21. Sept. 2010 | Shell Oil Company | In situ recovery from a hydrocarbon containing formation |
| US7831134 | 21. Apr. 2006 | 9. Nov. 2010 | Shell Oil Company | Grouped exposed metal heaters |
| US7832484 | 18. Apr. 2008 | 16. Nov. 2010 | Shell Oil Company | Molten salt as a heat transfer fluid for heating a subsurface formation |
| US7841401 | 19. Okt. 2007 | 30. Nov. 2010 | Shell Oil Company | Gas injection to inhibit migration during an in situ heat treatment process |
| US7841408 | 18. Apr. 2008 | 30. Nov. 2010 | Shell Oil Company | In situ heat treatment from multiple layers of a tar sands formation |
| US7841425 | 18. Apr. 2008 | 30. Nov. 2010 | Shell Oil Company | Drilling subsurface wellbores with cutting structures |
| US7845411 | 19. Okt. 2007 | 7. Dez. 2010 | Shell Oil Company | In situ heat treatment process utilizing a closed loop heating system |
| US7849922 | 18. Apr. 2008 | 14. Dez. 2010 | Shell Oil Company | In situ recovery from residually heated sections in a hydrocarbon containing formation |
| US7860377 | 21. Apr. 2006 | 28. Dez. 2010 | Shell Oil Company | Subsurface connection methods for subsurface heaters |
| US7862705 | 8. Febr. 2008 | 4. Jan. 2011 | Red Leaf Resources, Inc. | Methods of recovering hydrocarbons from hydrocarbonaceous material using a constructed infrastructure and associated systems |
| US7862706 | 8. Febr. 2008 | 4. Jan. 2011 | Red Leaf Resources, Inc. | Methods of recovering hydrocarbons from water-containing hydrocarbonaceous material using a constructed infrastructure and associated systems |
| US7866385 | 20. Apr. 2007 | 11. Jan. 2011 | Shell Oil Company | Power systems utilizing the heat of produced formation fluid |
| US7866386 | 13. Okt. 2008 | 11. Jan. 2011 | Shell Oil Company | In situ oxidation of subsurface formations |
| US7866388 | 13. Okt. 2008 | 11. Jan. 2011 | Shell Oil Company | High temperature methods for forming oxidizer fuel |
| US7906014 | 8. Febr. 2008 | 15. März 2011 | Red Leaf Resources, Inc. | Methods of recovering hydrocarbons from hydrocarbonaceous material with reduced non-carbonaceous leachate and CO2 and associated systems |
| US7912358 | 20. Apr. 2007 | 22. März 2011 | Shell Oil Company | Alternate energy source usage for in situ heat treatment processes |
| US7931086 | 18. Apr. 2008 | 26. Apr. 2011 | Shell Oil Company | Heating systems for heating subsurface formations |
| US7942197 | 21. Apr. 2006 | 17. Mai 2011 | Shell Oil Company | Methods and systems for producing fluid from an in situ conversion process |
| US7942203 | 4. Jan. 2010 | 17. Mai 2011 | Shell Oil Company | Thermal processes for subsurface formations |
| US7950453 | 18. Apr. 2008 | 31. Mai 2011 | Shell Oil Company | Downhole burner systems and methods for heating subsurface formations |
| US7967974 | 8. Febr. 2008 | 28. Juni 2011 | Red Leaf Resources, Inc. | Methods of recovering hydrocarbons from hydrocarbonaceous material using a constructed infrastructure having permeable walls and associated systems |
| US7986869 | 21. Apr. 2006 | 26. Juli 2011 | Shell Oil Company | Varying properties along lengths of temperature limited heaters |
| US8003844 | 6. Febr. 2009 | 23. Aug. 2011 | Red Leaf Resources, Inc. | Methods of transporting heavy hydrocarbons |
| US8011451 | 13. Okt. 2008 | 6. Sept. 2011 | Shell Oil Company | Ranging methods for developing wellbores in subsurface formations |
| US8027571 | 21. Apr. 2006 | 27. Sept. 2011 | Shell Oil Company | In situ conversion process systems utilizing wellbores in at least two regions of a formation |
| US8042610 | 18. Apr. 2008 | 25. Okt. 2011 | Shell Oil Company | Parallel heater system for subsurface formations |
| US8070840 | 21. Apr. 2006 | 6. Dez. 2011 | Shell Oil Company | Treatment of gas from an in situ conversion process |
| US8082995 | 14. Nov. 2008 | 27. Dez. 2011 | ExxonMobil Upstream Research Company | Optimization of untreated oil shale geometry to control subsidence |
| US8083813 | 20. Apr. 2007 | 27. Dez. 2011 | Shell Oil Company | Methods of producing transportation fuel |
| US8087460 | 7. März 2008 | 3. Jan. 2012 | ExxonMobil Upstream Research Company | Granular electrical connections for in situ formation heating |
| US8104537 | 15. Dez. 2009 | 31. Jan. 2012 | ExxonMobil Upstream Research Company | Method of developing subsurface freeze zone |
| US8109047 | 4. Jan. 2011 | 7. Febr. 2012 | Red Leaf Resources, Inc. | System for recovering hydrocarbons from water-containing hydrocarbonaceous material using a constructed infrastructure |
| US8113272 | 13. Okt. 2008 | 14. Febr. 2012 | Shell Oil Company | Three-phase heaters with common overburden sections for heating subsurface formations |
| US8122955 | 18. Apr. 2008 | 28. Febr. 2012 | ExxonMobil Upstream Research Company | Downhole burners for in situ conversion of organic-rich rock formations |
| US8146661 | 13. Okt. 2008 | 3. Apr. 2012 | Shell Oil Company | Cryogenic treatment of gas |
| US8146664 | 21. Mai 2008 | 3. Apr. 2012 | ExxonMobil Upstream Research Company | Utilization of low BTU gas generated during in situ heating of organic-rich rock |
| US8146669 | 13. Okt. 2008 | 3. Apr. 2012 | Shell Oil Company | Multi-step heater deployment in a subsurface formation |
| US8151877 | 18. Apr. 2008 | 10. Apr. 2012 | ExxonMobil Upstream Research Company | Downhole burner wells for in situ conversion of organic-rich rock formations |
| US8151880 | 9. Dez. 2010 | 10. Apr. 2012 | Shell Oil Company | Methods of making transportation fuel |
| US8151884 | 10. Okt. 2007 | 10. Apr. 2012 | ExxonMobil Upstream Research Company | Combined development of oil shale by in situ heating with a deeper hydrocarbon resource |
| US8151907 | 10. Apr. 2009 | 10. Apr. 2012 | Shell Oil Company | Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations |
| US8162059 | 13. Okt. 2008 | 24. Apr. 2012 | Shell Oil Company | Induction heaters used to heat subsurface formations |
| US8162405 | 10. Apr. 2009 | 24. Apr. 2012 | Shell Oil Company | Using tunnels for treating subsurface hydrocarbon containing formations |
| US8172335 | 10. Apr. 2009 | 8. Mai 2012 | Shell Oil Company | Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations |
| US8177305 | 10. Apr. 2009 | 15. Mai 2012 | Shell Oil Company | Heater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations |
| US8191630 | 28. Apr. 2010 | 5. Juni 2012 | Shell Oil Company | Creating fluid injectivity in tar sands formations |
| US8192682 | 26. Apr. 2010 | 5. Juni 2012 | Shell Oil Company | High strength alloys |
| US8196658 | 13. Okt. 2008 | 12. Juni 2012 | Shell Oil Company | Irregular spacing of heat sources for treating hydrocarbon containing formations |
| US8220539 | 9. Okt. 2009 | 17. Juli 2012 | Shell Oil Company | Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation |
| US8224163 | 24. Okt. 2003 | 17. Juli 2012 | Shell Oil Company | Variable frequency temperature limited heaters |
| US8224164 | 24. Okt. 2003 | 17. Juli 2012 | Shell Oil Company | Insulated conductor temperature limited heaters |
| US8224165 | 21. Apr. 2006 | 17. Juli 2012 | Shell Oil Company | Temperature limited heater utilizing non-ferromagnetic conductor |
| US8225866 | 21. Juli 2010 | 24. Juli 2012 | Shell Oil Company | In situ recovery from a hydrocarbon containing formation |
| US8230927 | 16. Mai 2011 | 31. Juli 2012 | Shell Oil Company | Methods and systems for producing fluid from an in situ conversion process |
| US8230929 | 17. März 2009 | 31. Juli 2012 | ExxonMobil Upstream Research Company | Methods of producing hydrocarbons for substantially constant composition gas generation |
| US8233782 | 29. Sept. 2010 | 31. Juli 2012 | Shell Oil Company | Grouped exposed metal heaters |
| US8238730 | 24. Okt. 2003 | 7. Aug. 2012 | Shell Oil Company | High voltage temperature limited heaters |
| US8240774 | 13. Okt. 2008 | 14. Aug. 2012 | Shell Oil Company | Solution mining and in situ treatment of nahcolite beds |
| USRE31677 | 14. Juli 1982 | 18. Sept. 1984 | Geokinetics, Inc. | Process for recovery of carbonaceous materials from subterranean deposits |
