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