Patents
Patents for G01V 5 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (5,830)
03/1979
03/06/1979CA1050173A1 Measurement of subsurface formation lithology, including composition and fluids, using capture gamma spectroscopy
02/1979
02/27/1979CA1049664A1 Low-cost but accurate radioactive logging for determining gas saturation in a reservoir
02/27/1979CA1049663A1 Low-cost but accurate radioactive logging for determining water saturations in a reservoir
02/20/1979CA1049159A1 Radioactive logging for determining oil saturation in a reservoir
02/13/1979US4139771 Device for examining luggage by means of X-rays
02/06/1979US4137751 Aerial prospecting
02/06/1979CA1048162A1 Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface
01/1979
01/30/1979USRE29894 Radiography
01/30/1979US4137452 Radioactive tracers
01/30/1979US4137450 Dual detector pulsed neutron logging for providing indication of formation porosity
01/23/1979US4136279 Method and apparatus for pulsed neutron spectral analysis using spectral stripping
01/23/1979US4136278 Method and apparatus for pulsed neutron spectral analysis using spectral stripping
01/16/1979US4135087 Method and apparatus for neutron induced gamma ray logging for lithology identification
01/16/1979CA1046651A1 Pulsed neutron logging system for inelastic scattering gamma rays with gain compensation
01/09/1979US4134011 Earth formation porosity log using measurement of fast neutron energy spectrum
12/1978
12/12/1978US4129777 Cement thickness measurements in cased boreholes
12/12/1978US4129776 Detection of subsurface air flow
11/1978
11/21/1978CA1043020A1 Pulsed neutron generator using shunt between anode and cathode
11/07/1978US4124800 Method for determining residual oil saturation of a formation
11/07/1978CA1042117A1 Well logging method and apparatus
10/1978
10/31/1978CA1041679A1 Apparatus and method for detecting explosives
10/31/1978CA1041676A1 Pulsed neutron combination well logging system
10/31/1978CA1041675A2 Well logging method
10/24/1978US4122341 Cementing method to improve well logging measurements in cased well boreholes
10/24/1978US4122340 Pulsed neutron porosity logging system
10/24/1978US4122339 Earth formation pulsed neutron porosity logging system utilizing epithermal neutron and inelastic scattering gamma ray detectors
10/24/1978US4122338 Thermal neutron die away logging system with optimized gating
10/03/1978US4118623 Continuous quality control of mined hard and soft coals
10/03/1978CA1039857A1 Radioactive well logging system with shale (boron) compensation by gamma ray build-up
09/1978
09/19/1978US4115688 Mining and drilling control of distance to the coal-shale interface - thorium measurement by gamma spectrometry
08/1978
08/22/1978CA1037161A1 Method for determining fluid type and lithology of subterranean formations
07/1978
07/25/1978US4103158 Method and apparatus for geophysical prospecting by radioactive diagraphy
07/25/1978US4102185 Acoustic-nuclear permeability logging system
06/1978
06/27/1978US4097737 Epithermal die-away porosity logging
06/20/1978US4096385 Clay content determination by natural gamma ray spectrometry
06/13/1978US4095102 Hydrocarbon detection utilizing neutron borehole measurements
06/06/1978US4093854 Well logging sonde including a linear particle accelerator
05/1978
05/30/1978US4092545 Means and method for controlling the neutron output of a neutron generator tube
05/30/1978US4092536 Method for detecting cement voids or borehole washouts
03/1978
03/28/1978US4081675 Geophysical and geochemical exploration
03/07/1978US4078174 Neutron borehole logging correction technique
02/1978
02/28/1978US4077022 Well logging method and means using an armored multiconductor coaxial cable
02/28/1978US4076980 Radioactive well logging to measure earth formation fluid permeability by electrohydraulic induced flow of radiation activated fluids
01/1978
01/31/1978US4071757 Detection of behind casing water flow at an angle to the axis of a well borehole
01/31/1978US4071756 Radioactive tracers
01/31/1978US4071755 Method for in situ evaluation of the source rock potential of earth formations
01/03/1978US4066892 Irradiating coal formation with neutrons to produce gamma rays
01/03/1978US4066891 Geochemical and geophysical exploration
12/1977
12/20/1977US4064436 Reducing noise in uranium exploration
12/13/1977US4063087 Reducing noise in uranium exploration
11/1977
11/22/1977US4059760 Georadiological surveying for oil and gas and subsurface structure contour mapping
11/08/1977US4057720 Behind casing fluid flow detection in producing wells using gas lift
11/08/1977US4056969 Detection of concealed metalliferous deposits, hydrocarbons and explosives
11/01/1977USRE29466 In-situ assaying for uranium in rock formations
10/1977
10/25/1977US4055763 Neutron characteristic and spectroscopy logging methods and apparatus
10/11/1977US4053772 Locating underground uranium deposits
10/11/1977US4053767 Method and apparatus for stabilizing signals in radioactive well logging tools
10/04/1977US4052613 Log-inject-log in sand consolidation
09/1977
09/27/1977US4051368 Method of measuring horizontal flow speed of fluids in earth formations penetrated by a wellborehole
09/13/1977US4048505 Radiography
09/13/1977US4048495 Doubly-compensated dual-detector density logging apparatus
09/06/1977US4047035 Baggage inspection device
09/06/1977US4047028 Resolution of through tubing fluid flow and behind casing fluid flow in multiple completion wells
09/06/1977US4047027 Neutron well logging technique for gas detection
09/06/1977US4046764 Method and apparatus for measuring the thermal neutron absorption rate in earth formations
08/1977
08/09/1977US4041315 Computerized tomography comprising laterally shifting detected beams within a rotated fan of radiation
08/09/1977US4041309 Background subtraction system for pulsed neutron logging of earth boreholes
07/1977
07/12/1977US4035647 Radiography
07/12/1977US4035640 Behind casing water flow detection using pulsed neutron oxygen activation
07/12/1977US4035639 Neutron logging of formation porosity
07/05/1977US4034218 Focused detection logging technique
06/1977
06/28/1977US4032781 Well fluid production profiling using an oxygen activation flow meter
06/28/1977US4032780 Behind casing water flow detection using continuous oxygen activation
06/28/1977US4032779 Behind casing water volume flow rate measurement using concentric gamma ray detectors
06/28/1977US4032778 Behind casing water volume flow rate measurement using gamma ray spectral degradation
06/21/1977US4031545 Radiant energy alarm system
06/21/1977US4031401 Radiant energy imaging scanning
06/21/1977US4031367 Methods and apparatus for pulse height analyzer offset control
06/07/1977US4028660 Well logging method and means using an armored multiconductor coaxial cable
06/07/1977US4028546 Behind well casing water flow detection system
05/1977
05/03/1977US4021666 Neutron-neutron logging for both porosity and macroscopic absorption cross section
04/1977
04/26/1977US4020346 X-ray inspection device and method
04/26/1977US4020342 Locating oil or gas wells
04/19/1977US4019053 Lethal weapon detection process
04/12/1977US4017731 Method and apparatus for prospecting for buried mineral deposits
03/1977
03/22/1977US4013874 Address decoder for use with multichannel analyzers
02/1977
02/15/1977US4008392 Method for determining fluid type and lithology of subterranean formations
02/08/1977US4007366 Radioactive tracer profiling system and apparatus
01/1977
01/25/1977US4005290 Neutron-neutron logging
01/18/1977US4004212 Mine detector system
01/18/1977US4004151 Detector for deep well logging
01/18/1977US4004147 Logging subsurface formations for porosity
01/11/1977US4002904 Simultaneous thermal neutron lifetime and boron content well log
01/11/1977US4002903 Simultaneous thermal neutron decay time and shale compensated chlorine log system
12/1976
12/14/1976US3997787 Apparatus and method for detecting explosives
11/1976
11/23/1976US3993904 Low-cost but accurate radioactive logging for determining water saturations in a reservoir
11/23/1976US3993903 Low-cost but accurate radioactive logging for determining gas saturation in a reservoir
11/23/1976US3993902 Radioactive logging for determining oil saturation in a reservoir
11/23/1976US3993131 Tracing flow of petroleum in underground reservoirs
11/09/1976US3990297 Process and device for the determination of the characteristics of the geological formations traversed by a borehole
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