| Patents for G01V 5 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (5,830) |
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| 04/28/1981 | US4264812 Method for determining the absorption cross section of small fluid samples |
| 04/21/1981 | US4263509 Gamma ray logging |
| 02/17/1981 | US4251726 Deuterium tagged articles such as explosives and method for detection thereof |
| 02/17/1981 | US4251724 Method and apparatus for determination of temperature, neutron absorption cross section and neutron moderating power |
| 02/11/1981 | EP0023850A1 Cryostat for photon detector and its use in a borehole logging tool |
| 02/10/1981 | CA1095636A1 Method and apparatus for neutron induced gamma ray logging for lithology identification |
| 02/10/1981 | CA1095635A1 Prompt fission neutron logging for uranium |
| 02/03/1981 | CA1095187A1 Pulsed neutron porosity logging method and apparatus using dual detectors |
| 02/03/1981 | CA1095186A1 Method for detecting fractures in formations surrounding earth boreholes |
| 02/03/1981 | CA1095185A1 Method for monitoring fluid movement behind casing in oil and gas wells |
| 01/13/1981 | CA1093708A1 Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
| 01/13/1981 | CA1093707A1 Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
| 01/13/1981 | CA1093706A1 Sync transmission method and apparatus for high frequency pulsed neutron spectral analysis systems |
| 12/30/1980 | US4241592 Cryostat for borehole sonde employing semiconductor detector |
| 12/23/1980 | US4241253 Epithermal neutron detector |
| 12/23/1980 | CA1092256A1 Uranium logging in earth formations |
| 12/16/1980 | US4239969 Article inspection apparatus with protective chamber having article-loading facility |
| 12/16/1980 | US4239965 Method and apparatus for neutron induced gamma ray logging for direct porosity identification |
| 12/16/1980 | CA1091819A1 Dual detector pulsed neutron logging for providing indication of formation porosity |
| 11/25/1980 | CA1090482A1 X-ray inspection system for security screening application |
| 11/18/1980 | US4233839 Apparatus and method for determining characteristics of subsurface formations |
| 11/11/1980 | US4233508 Water injection profiling |
| 11/04/1980 | US4232220 Background subtraction system for pulsed neutron logging of earth boreholes |
| 11/04/1980 | CA1089117A1 Reducing noise in uranium exploration |
| 11/04/1980 | CA1089116A1 Reducing noise in uranium exploration |
| 10/28/1980 | CA1088678A1 Method for detecting cement voids or borehole washouts |
| 10/14/1980 | US4228350 Method and apparatus for measuring underground fluid flow characteristics |
| 09/23/1980 | US4224516 Methods and apparatus for measuring thermal neutron decay characteristics of earth formations |
| 09/16/1980 | US4223218 Methods and apparatus for optimizing measurements of thermal neutron decay characteristics |
| 09/02/1980 | US4220852 Radiation dosimeter assembly |
| 09/02/1980 | US4220851 Gain stabilization for radioactivity well logging apparatus |
| 08/19/1980 | CA1084174A2 Behind casing fluid flow detection in producing wells using gas lift |
| 08/19/1980 | CA1084173A1 Method and apparatus for stabilizing signals in radioactive well logging tools |
| 08/05/1980 | US4216499 Inspection system for baggage |
| 08/05/1980 | US4216380 Field method for detecting deposits containing uranium and thorium |
| 07/01/1980 | US4210811 Drive for moveable shield in luggage screening apparatus |
| 06/24/1980 | US4209694 Assaying for uranium-bearing ore |
| 06/17/1980 | US4208580 Lithology determination from the calcium and magnesium activation lines |
| 06/17/1980 | CA1079870A1 Behind casing fluid flow detection in producing wells using gas lift |
| 06/17/1980 | CA1079869A1 Well logging method and apparatus |
| 06/10/1980 | CA1079412A1 Exclusion of alpha particles from thoron in uranium detection |
| 06/10/1980 | CA1079411A1 Locating underground uranium deposits |
| 06/03/1980 | US4206361 Radiography |
| 06/03/1980 | US4206359 Radiography |
| 05/28/1980 | EP0011338A1 Article inspection apparatus with protective chambers having article-loading facility |
| 05/27/1980 | CA1078533A1 Geophysical and geochemical exploration |
| 05/20/1980 | CA1078080A1 Method and apparatus for well logging |
| 05/06/1980 | US4201912 Subthreshold neutron interrogator for detection of radioactive materials |
| 04/22/1980 | CA1076270A1 Means and method for controlling the neutron output of a neutron generator tube |
| 04/22/1980 | CA1076267A1 Radon detection |
| 03/04/1980 | US4191884 Gamma rays |
| 03/04/1980 | US4191883 Method for determining residual oil concentration of a formation using thermal neutron decay measurements |
| 03/04/1980 | CA1073119A1 Processing method of natural gamma ray well logging data |
| 02/12/1980 | US4187908 Radioactive isotopes of potassium, thorium and uranium |
| 01/29/1980 | US4186303 Exclusion of alpha particles from thoron in uranium detection |
| 01/29/1980 | CA1070857A1 Detection of behind casing water flow at an angle to the axis of a well borehole |
| 01/22/1980 | US4185193 Method for assaying for neutron-fission-producing ores |
| 01/22/1980 | CA1070438A1 Behind well casing water flow detection system |
| 01/22/1980 | CA1070389A1 Method and apparatus for pulse height analyzer control |
| 01/15/1980 | CA1070031A1 Well fluid production profiling using an oxygen activation flow meter |
| 01/15/1980 | CA1070030A1 Hydrocarbon detection utilizing neutron borehole measurements |
| 12/25/1979 | US4180731 Radioactive logging sonde including means for monitoring neutron source output |
| 12/25/1979 | US4180730 Logging technique for assaying for uranium in earth formations |
| 12/25/1979 | US4180729 Uranium logging in earth formations |
| 12/25/1979 | US4180728 Neutron activation probe for measuring the presence of uranium in ore bodies |
| 12/25/1979 | US4180727 Gamma-gamma density logging method |
| 12/25/1979 | CA1068588A Detection of concealed metalliferous deposits, hydrocarbons and explosives |
| 12/18/1979 | US4179614 Thermoluminescent dosimeter system |
| 12/11/1979 | US4178506 Method for detecting fractures in formations surrounding earth boreholes |
| 11/27/1979 | CA1067211A1 Method for in situ evaluation of the source rock potential of earth formations |
| 11/06/1979 | US4173718 Method for monitoring fluid movement behind casing in oil and gas wells |
| 10/30/1979 | CA1065502A1 Behind casing water flow detection using continuous oxygen activation |
| 10/30/1979 | CA1065501A1 Method and apparatus for well logging |
| 10/30/1979 | CA1065500A1 Method and apparatus for measuring the thermal neutron absorption rate in earth formations |
| 10/09/1979 | US4170732 Pulsed neutron porosity logging method and apparatus using dual detectors |
| 09/18/1979 | US4168428 Sync transmission method and apparatus for high frequency pulsed neutron spectral analysis systems |
| 09/18/1979 | CA1062814A1 Coal logging system |
| 09/18/1979 | CA1062813A1 Well logging method and apparatus |
| 09/04/1979 | CA1061916A1 Background subtraction system for pulsed neutron logging of earth boreholes |
| 08/21/1979 | US4165460 Coal-rock interface detector |
| 08/07/1979 | US4163991 Arrangement for examining objects |
| 07/31/1979 | CA1059652A2 Low-cost but accurate radioactive logging for determining gas saturation in a reservoir |
| 07/31/1979 | CA1059651A2 Low-cost but accurate radioactive logging for determining water saturations in a reservoir |
| 07/31/1979 | CA1059650A1 Behind casing water volume flow rate measurement using concentric gamma ray detectors |
| 07/31/1979 | CA1059649A1 Method and apparatus for geophysical prospecting by radioactive diagraphy |
| 07/17/1979 | CA1058771A1 Resolution of through tubing fluid flow and behind casing fluid flow in multiple completion wells |
| 07/10/1979 | CA1058331A1 Behind casing water flow detection using pulsed neutron oxygen activation |
| 06/12/1979 | CA1056516A1 Log-inject-log in sand consolidation |
| 06/12/1979 | CA1056515A2 Method for transmitting a high count rate pulse signal over a common well logging cable |
| 06/12/1979 | CA1056454A1 Tracing flow of petroleum in underground reservoirs |
| 06/05/1979 | US4157469 Pulsed neutron well logging apparatus having means for determining background radiation |
| 05/22/1979 | US4156138 As function of alpha particles in radon gas |
| 05/15/1979 | CA1054498A1 Method and apparatus for collecting atmospheric samples in atmospheric geochemical prospecting |
| 05/01/1979 | US4152590 Simultaneous thermal neutron decay time and porosity logging system |
| 05/01/1979 | CA1053807A1 Simultaneous thermal neutron decay time and shale compensated chlorine log system |
| 04/24/1979 | CA1053384A1 Earth formation salinity by comparison of inelastic and capture gamma ray spectra |
| 04/10/1979 | CA1052478A1 Behind casing water volume flow rate measurement using gamma ray spectral degradation |
| 04/10/1979 | CA1052477A1 Method and apparatus of investigating an earth formation |
| 03/27/1979 | CA1051561A1 Three frequency modulated combination thermal neutron lifetime log and porosity log |
| 03/20/1979 | CA1051125A1 Neutron borehole logging correction technique |