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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03/06/1979 | CA1050173A1 Measurement of subsurface formation lithology, including composition and fluids, using capture gamma spectroscopy |
02/27/1979 | CA1049664A1 Low-cost but accurate radioactive logging for determining gas saturation in a reservoir |
02/27/1979 | CA1049663A1 Low-cost but accurate radioactive logging for determining water saturations in a reservoir |
02/20/1979 | CA1049159A1 Radioactive logging for determining oil saturation in a reservoir |
02/13/1979 | US4139771 Device for examining luggage by means of X-rays |
02/06/1979 | US4137751 Aerial prospecting |
02/06/1979 | CA1048162A1 Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface |
01/30/1979 | USRE29894 Radiography |
01/30/1979 | US4137452 Radioactive tracers |
01/30/1979 | US4137450 Dual detector pulsed neutron logging for providing indication of formation porosity |
01/23/1979 | US4136279 Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
01/23/1979 | US4136278 Method and apparatus for pulsed neutron spectral analysis using spectral stripping |
01/16/1979 | US4135087 Method and apparatus for neutron induced gamma ray logging for lithology identification |
01/16/1979 | CA1046651A1 Pulsed neutron logging system for inelastic scattering gamma rays with gain compensation |
01/09/1979 | US4134011 Earth formation porosity log using measurement of fast neutron energy spectrum |
12/12/1978 | US4129777 Cement thickness measurements in cased boreholes |
12/12/1978 | US4129776 Detection of subsurface air flow |
11/21/1978 | CA1043020A1 Pulsed neutron generator using shunt between anode and cathode |
11/07/1978 | US4124800 Method for determining residual oil saturation of a formation |
11/07/1978 | CA1042117A1 Well logging method and apparatus |
10/31/1978 | CA1041679A1 Apparatus and method for detecting explosives |
10/31/1978 | CA1041676A1 Pulsed neutron combination well logging system |
10/31/1978 | CA1041675A2 Well logging method |
10/24/1978 | US4122341 Cementing method to improve well logging measurements in cased well boreholes |
10/24/1978 | US4122340 Pulsed neutron porosity logging system |
10/24/1978 | US4122339 Earth formation pulsed neutron porosity logging system utilizing epithermal neutron and inelastic scattering gamma ray detectors |
10/24/1978 | US4122338 Thermal neutron die away logging system with optimized gating |
10/03/1978 | US4118623 Continuous quality control of mined hard and soft coals |
10/03/1978 | CA1039857A1 Radioactive well logging system with shale (boron) compensation by gamma ray build-up |
09/19/1978 | US4115688 Mining and drilling control of distance to the coal-shale interface - thorium measurement by gamma spectrometry |
08/22/1978 | CA1037161A1 Method for determining fluid type and lithology of subterranean formations |
07/25/1978 | US4103158 Method and apparatus for geophysical prospecting by radioactive diagraphy |
07/25/1978 | US4102185 Acoustic-nuclear permeability logging system |
06/27/1978 | US4097737 Epithermal die-away porosity logging |
06/20/1978 | US4096385 Clay content determination by natural gamma ray spectrometry |
06/13/1978 | US4095102 Hydrocarbon detection utilizing neutron borehole measurements |
06/06/1978 | US4093854 Well logging sonde including a linear particle accelerator |
05/30/1978 | US4092545 Means and method for controlling the neutron output of a neutron generator tube |
05/30/1978 | US4092536 Method for detecting cement voids or borehole washouts |
03/28/1978 | US4081675 Geophysical and geochemical exploration |
03/07/1978 | US4078174 Neutron borehole logging correction technique |
02/28/1978 | US4077022 Well logging method and means using an armored multiconductor coaxial cable |
02/28/1978 | US4076980 Radioactive well logging to measure earth formation fluid permeability by electrohydraulic induced flow of radiation activated fluids |
01/31/1978 | US4071757 Detection of behind casing water flow at an angle to the axis of a well borehole |
01/31/1978 | US4071756 Radioactive tracers |
01/31/1978 | US4071755 Method for in situ evaluation of the source rock potential of earth formations |
01/03/1978 | US4066892 Irradiating coal formation with neutrons to produce gamma rays |
01/03/1978 | US4066891 Geochemical and geophysical exploration |
12/20/1977 | US4064436 Reducing noise in uranium exploration |
12/13/1977 | US4063087 Reducing noise in uranium exploration |
11/22/1977 | US4059760 Georadiological surveying for oil and gas and subsurface structure contour mapping |
11/08/1977 | US4057720 Behind casing fluid flow detection in producing wells using gas lift |
11/08/1977 | US4056969 Detection of concealed metalliferous deposits, hydrocarbons and explosives |
11/01/1977 | USRE29466 In-situ assaying for uranium in rock formations |
10/25/1977 | US4055763 Neutron characteristic and spectroscopy logging methods and apparatus |
10/11/1977 | US4053772 Locating underground uranium deposits |
10/11/1977 | US4053767 Method and apparatus for stabilizing signals in radioactive well logging tools |
10/04/1977 | US4052613 Log-inject-log in sand consolidation |
09/27/1977 | US4051368 Method of measuring horizontal flow speed of fluids in earth formations penetrated by a wellborehole |
09/13/1977 | US4048505 Radiography |
09/13/1977 | US4048495 Doubly-compensated dual-detector density logging apparatus |
09/06/1977 | US4047035 Baggage inspection device |
09/06/1977 | US4047028 Resolution of through tubing fluid flow and behind casing fluid flow in multiple completion wells |
09/06/1977 | US4047027 Neutron well logging technique for gas detection |
09/06/1977 | US4046764 Method and apparatus for measuring the thermal neutron absorption rate in earth formations |
08/09/1977 | US4041315 Computerized tomography comprising laterally shifting detected beams within a rotated fan of radiation |
08/09/1977 | US4041309 Background subtraction system for pulsed neutron logging of earth boreholes |
07/12/1977 | US4035647 Radiography |
07/12/1977 | US4035640 Behind casing water flow detection using pulsed neutron oxygen activation |
07/12/1977 | US4035639 Neutron logging of formation porosity |
07/05/1977 | US4034218 Focused detection logging technique |
06/28/1977 | US4032781 Well fluid production profiling using an oxygen activation flow meter |
06/28/1977 | US4032780 Behind casing water flow detection using continuous oxygen activation |
06/28/1977 | US4032779 Behind casing water volume flow rate measurement using concentric gamma ray detectors |
06/28/1977 | US4032778 Behind casing water volume flow rate measurement using gamma ray spectral degradation |
06/21/1977 | US4031545 Radiant energy alarm system |
06/21/1977 | US4031401 Radiant energy imaging scanning |
06/21/1977 | US4031367 Methods and apparatus for pulse height analyzer offset control |
06/07/1977 | US4028660 Well logging method and means using an armored multiconductor coaxial cable |
06/07/1977 | US4028546 Behind well casing water flow detection system |
05/03/1977 | US4021666 Neutron-neutron logging for both porosity and macroscopic absorption cross section |
04/26/1977 | US4020346 X-ray inspection device and method |
04/26/1977 | US4020342 Locating oil or gas wells |
04/19/1977 | US4019053 Lethal weapon detection process |
04/12/1977 | US4017731 Method and apparatus for prospecting for buried mineral deposits |
03/22/1977 | US4013874 Address decoder for use with multichannel analyzers |
02/15/1977 | US4008392 Method for determining fluid type and lithology of subterranean formations |
02/08/1977 | US4007366 Radioactive tracer profiling system and apparatus |
01/25/1977 | US4005290 Neutron-neutron logging |
01/18/1977 | US4004212 Mine detector system |
01/18/1977 | US4004151 Detector for deep well logging |
01/18/1977 | US4004147 Logging subsurface formations for porosity |
01/11/1977 | US4002904 Simultaneous thermal neutron lifetime and boron content well log |
01/11/1977 | US4002903 Simultaneous thermal neutron decay time and shale compensated chlorine log system |
12/14/1976 | US3997787 Apparatus and method for detecting explosives |
11/23/1976 | US3993904 Low-cost but accurate radioactive logging for determining water saturations in a reservoir |
11/23/1976 | US3993903 Low-cost but accurate radioactive logging for determining gas saturation in a reservoir |
11/23/1976 | US3993902 Radioactive logging for determining oil saturation in a reservoir |
11/23/1976 | US3993131 Tracing flow of petroleum in underground reservoirs |
11/09/1976 | US3990297 Process and device for the determination of the characteristics of the geological formations traversed by a borehole |