Patents
Patents for G01V 5 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (5,830)
09/1986
09/03/1986CN85108054A Arrangement for perspective container
08/1986
08/27/1986EP0191962A1 Cryogenic cell
08/21/1986EP0087442A4 Image analysis system.
08/12/1986US4605854 Measurement of formation porosity using fast neutron spectroscopy
08/05/1986US4604522 Method and apparatus for logging a borehole employing dual radiation detectors
07/1986
07/30/1986EP0188878A1 Borehole compensation for neutron porosity devices
07/23/1986CN85107800A Appratus and operation for detecting rn and its daughter in the soil
07/15/1986US4600838 Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
07/09/1986EP0187000A1 Method of logging fluid flow rate, water fraction, and/or water salinity
07/08/1986US4599740 Radiographic examination system
06/1986
06/24/1986US4596927 Method and apparatus for induced gamma ray logging
06/24/1986US4596926 Formation density logging using multiple detectors and sources
06/18/1986EP0184898A1 Method for logging a borehole employing dual radiation detectors
06/11/1986EP0184359A2 Measurement of earth porosity at a well
06/10/1986CA1205924A1 Method and apparatus for determining characteristics of clay-bearing formations
06/03/1986US4593195 Method and device for obtaining information relative to organic materials or minerals likely to be contained in geological formations
06/03/1986CA1205579A1 Use of pulsed neutron logging to evaluate perforation washing
05/1986
05/20/1986US4590370 Epithermal neutron die-away logging
05/06/1986US4587623 Method for recalibrating nuclear density gauges
05/06/1986US4587424 Method for investigating the composition of an earth formation traversed by a borehole
05/06/1986US4587423 Method for gravel pack evaluation
05/06/1986US4587422 Subsurface density testing method
05/06/1986CA1204225A1 Methods for simultaneous measurement of thermal neutron decay components
04/1986
04/29/1986US4585939 Quantitative measurement by determination sensitivity matrice and gamma ray intensity at different energy levels
04/16/1986EP0178279A1 Method of prospecting for radioactive deposits by thermoluminescence
04/08/1986US4581532 Borehole tool
04/08/1986US4581531 Method for identifying hydrothermal alteration areas of the earth
04/01/1986US4580050 Behind casing water flow detection
04/01/1986US4580049 Probe for locating mineral deposits
04/01/1986US4580048 Detector and multichannel analyzer
03/1986
03/25/1986US4578580 Density logging method
03/25/1986US4578579 Method for depth referencing hydrocarbon gas shows on mud logs
03/25/1986US4578578 Method for correcting spectrum shift
03/19/1986EP0065557B1 Installation for measuring the profile of radioactive radiation and means for levelling the radiation intensity
03/18/1986US4577102 Method and apparatus for distinguishing hydrocarbon from fresh water in situ
03/18/1986CA1202124A1 Natural gamma ray logging with borehole effect compensation
03/05/1986EP0173605A2 Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
03/04/1986US4574193 Method for logging fluid flow rate, water fraction, and/or salinity of water flowing into a well
02/1986
02/25/1986US4572739 Adding dry or non-dissolved ferrous sulfate
02/18/1986US4571492 Method to detect, identify, authenticate and date an article
02/11/1986US4570067 Method and apparatus for formation logging using position sensitive neutron detectors
02/04/1986US4568830 Borehole gamma ray logging detector
02/04/1986US4568829 Real time filtering in nuclear well logging and the like
02/04/1986US4568510 Method and system for uranium exploration
01/1986
01/28/1986CA1200020A1 Gamma ray spectral tool for borehole use
01/21/1986US4566113 Method and apparatus for examining the content of containers
12/1985
12/10/1985US4558220 Radioactivity well logging
12/03/1985US4556793 Epithermal neutron lifetime logging
11/1985
11/13/1985EP0160747A1 A dry cement composition and a method for producing the same
11/13/1985EP0160746A1 A dry cement composition
11/06/1985EP0160351A1 Tool casing with gamma ray window
10/1985
10/08/1985US4546252 Method for monitoring potassium chloride concentration in drilling fluids
09/1985
09/24/1985US4543478 Detector pulse forming system for nuclear well logging tools
09/24/1985CA1194243A1 Well logging with natural gamma radiation
09/17/1985US4542292 Correction of natural gamma radiation logs for the effects of gamma ray emission from and attenuation by the borehole fluid
09/17/1985CA1193759A1 Method and apparatus for determining the density characteristics of underground earth formations
09/10/1985US4540883 Background correction method and apparatus for pulsed neutron logging of earth boreholes
09/03/1985US4539648 In a radiant energy imaging system
08/1985
08/20/1985CA1192319A1 Method and apparatus for x-ray fluorescence spectroscopy
07/1985
07/23/1985US4531188 Methods for automatic processing of information obtained by well logging
07/16/1985US4530006 Intrinsic object sensing in a digital fan beam X-ray inspection system
07/16/1985US4529878 Determination of residual oil saturation using thermal neutron decay measurements without knowledge of the formation or formation fluids
07/16/1985US4529877 Borehole compensated density logs corrected for naturally occurring gamma rays
07/16/1985CA1190665A1 Method and apparatus for measuring radon beneath and above the level of the ground
07/02/1985US4527058 Earth formation density measurement from natural gamma ray spectral logs
07/02/1985CA1189986A1 Method and apparatus for distinguishing hydrocarbon from water
06/1985
06/19/1985EP0145172A1 Epithermal neutron porosity measurement
06/18/1985US4524274 Methods and apparatus for investigating an earth formation and compensating for borehole environmental effects
06/18/1985US4524273 Investigating subsurface earth formations traversed by a borehole
06/18/1985US4524272 Behind casing water flow detector
06/05/1985EP0143529A1 Multi-function natural gamma ray logging
06/04/1985CA1188429A1 Borehole compensated kut log
05/1985
05/28/1985CA1188013A1 Method and apparatus for analysing well fluids by photon irradiation
05/14/1985US4517459 Temperature stabilization system for a radiation detector in a well logging tool
04/1985
04/09/1985US4510573 Method for X-ray fluorescence spectroscopy
04/09/1985CA1185380A1 Computer-based system for acquisition of nuclear well logging data
03/1985
03/26/1985US4507554 Method and apparatus for determining borehole and formation constituents
03/26/1985US4507553 Method and apparatus for identifying vanadium in earth formations
03/20/1985EP0134626A1 Determination of casing thickness using a gain stabilized gamma ray spectroscopy technique
03/20/1985EP0134619A1 A borehole gamma ray logging detector and system
03/19/1985US4506263 Data transmission system for logging tools
03/19/1985US4506156 Earth formation porosity determination with dual epithermal neutron detector system
03/12/1985US4504736 Gamma ray spectral tool for borehole use
03/12/1985US4504438 Method and apparatus for determining the density characteristics of underground earth formations
03/12/1985CA1183970A1 Method for monitoring drilling materials for gamma ray activity
03/05/1985US4503328 Evaluation of the interaction with radiant energy of substances traversed by a borehole
03/05/1985US4503327 Apparatus for well logging
02/1985
02/26/1985US4501964 Borehole compensated oxygen activation nuclear well logging
02/19/1985US4500781 Method and apparatus for determining neutron characteristics of borehole fluids
02/19/1985CA1182741A1 Methods and apparatus for environmental correction of thermal neutron logs
01/1985
01/29/1985US4497061 Method and apparatus for radiography comprising calibrating means
01/15/1985US4493999 Method of energy resolved gamma-ray logging
01/15/1985US4493998 Method for monitoring drilling materials for gamma ray activity
01/08/1985US4492864 Neutron well logging
01/08/1985US4492863 Determining elemental concentrations and formation matrix type from natural gamma ray spectral logs
12/1984
12/12/1984EP0127931A1 System for subsurface neutron logging
12/05/1984EP0127269A1 Epithermal neutron detector and logging method using it
12/04/1984US4486658 Water flow well logging sonde and method of water flow sensing
12/04/1984CA1178976A1 Method and a plant for producing a dry cement composition
11/1984
11/28/1984EP0126219A1 Borehole logging probe for the determination of formation constituents
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