173364 ⎘
Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
Sub-classes:SCANDIUM TARGET FOR A NEUTRON GENERATOR FOR WELLBORE LOGGING
#2Parameter Determination Method and Apparatus for Uranium Fission Prompt Neutron Logging Model, and Storage Medium
#3DOWNHOLE NANO PARTICLE HEAT BLANKET FOR NEUTRON GENERATOR TUBES AND OTHER APPLICATIONS
#4LITHIUM DETECTION TECHNIQUES USING NEUTRONS AND/OR ALPHA PARTICLES
#5SHIELDING DEVICE OF SOURCE MOUNTING AND DEMOUNTING FOR NUCLEAR LOGGING INSTRUMENT
#6TARGET GAS LOADING FOR NEUTRON GENERATOR
#7Near-Field Sensitivity of Formation and Cement Porosity Measurements With Radial Resolution in a Borehole
#8SCANDIUM TARGET FOR A NEUTRON GENERATOR FOR WELLBORE LOGGING
#9Computer-implemented method of using a non-transitory computer readable memory device with a pre programmed neural network and a trained neural network computer program product for obtaining a true borehole sigma and a true formation sigma
#10Methods and Means for Neutron Imaging Within a Borehole
#11Through-tubing, cased-hole sealed material density evaluation using gamma ray measurements
#12Downhole neutron generators and methods to auto tune downhole neutron generators
#13Real-Time Output Correction of Detector Outputs Resulting from Azimuthal X-Ray Source Variations Using Monitoring Detectors
#14Tight reservoir fluid characterization by using sonic slowness well logs
#15High voltage supply for compact radiation generator
#16Downhole neutron generators and methods to auto tune downhole neutron generators
#17Systems and methods for the determination of lithology porosity from surface drilling parameters
#18Method for improving neutron interpretations in subsurface formations
#19Beam alignment systems and method
#20Sensor with integrated window
#21NEAR-FIELD SENSITIVITY OF FORMATION AND CEMENT POROSITY MEASUREMENTS WITH RADIAL RESOLUTION IN A BOREHOLE
#22Integrating geoscience data to predict formation properties
#23Methods and means for azimuthal neutron porosity imaging of formation and cement volumes surrounding a borehole
#24Systems and methods for saturation logging of hydrocarbon wells
#25METHODS AND MEANS FOR NEUTRON IMAGING WITHIN A BOREHOLE
#26Neutron imaging devices for cased wells and open boreholes
#27Caliper-behind-casing from pulsed neutron apparatus
#28High voltage supply for compact radiation generator
#29Methods and means for azimuthal neutron porosity imaging of formation and cement volumes surrounding a borehole
#30Method for using neutron interaction cross section to interpret neutron measurements
#31System and method of using energy correlated timing spectra to locate subsurface objects
#32Combined thermal and voltage transfer system for an x-ray source
#33Geochemical photoelectric logging systems and methods
#34Azimuthal associated particle imaging neutron generator for neutron x-ray inspection system gamma imaging for oil and gas technologies
#35Methods and means for azimuthal neutron porosity imaging of formation and cement volumes surrounding a borehole
#36Generating a high-resolution lithology model for subsurface formation evaluation
#37Long-lifetime, high-yield, fast neutrons source
#38Techniques for determining formation composition from measured nuclear spectra
#39METHODS AND MEANS FOR NEUTRON IMAGING WITHIN A BOREHOLE
#40Data fusion enhanced multi-modality wellbore integrity inspection system
#41Wellbore detector with azimuthal and spectral energy resolution
#42Multi-barrier wellbore integrity inspection system with eccentricity correction
#43REAL-TIME OUTPUT CORRECTION OF DETECTOR OUTPUTS RESULTING FROM AZIMUTHAL X-RAY SOURCE VARIATIONS USING MONITORING DETECTORS
#44DRILLING CONTROL BASED ON BRITTLENESS INDEX CORRELATION
#45Downhole neutron generators and methods to generate neutrons in a downhole environment
#46Downhole energy calibration of gamma ray detectors
#47High voltage supply for compact radiation generator
#48DOWNHOLE FIELD IONIZATION NEUTRON GENERATOR
#49Long-lifetime, high-yield, fast neutrons source
#50Method for proactive mitigation of coronal discharge and flash-over events within high voltage x-ray generators used in borehole logging
#51Methods for precise output voltage stability and temperature compensation of high voltage X-ray generators within the high-temperature environments of a borehole
#52Identification of annulus materials using formation porosity
#53Sand-resistivity/conductivity and saturation evaluation in laminated formations with biaxial anisotropy
#54Downhole switching of wellbore logging tools
#55Multi-sensor workflow for evaluation of water flow in multiple casing strings with distributed sensors data
#56Combined radioactive source for gamma-neutron tool
#57Radiation induced conductivity of oil based mud around pads of electrical imaging tools
#58Method to correct and pulsed neutron fan based interpretation for shale effects
#59Systems and methods for high voltage conversion and multiplication for ionizing radiation detection
#60Charged particle emitter assembly for radiation generator
#61High output accelerator neutron source
#62Predicting water holdup measurement accuracy of multiphase production logging tools
#63Installation for intervention in a well comprising a neutron generator, and method associated therewith
#64Downhole tool and method for imaging a wellbore
#65Multi-sensor workflow for evaluation of gas flow in multiple casing strings with distributed sensors
#66System and methodology utilizing a getter based storage system
#67High throughput pulse height analyzer
#68Method for using neutron interaction cross section to interpret neutron measurements
#69Pulsed chemical neutron source
#70Radiation generator and power supply configuration for well logging instruments
#71Electrically operated radiation source operating power, reliability and life management systems and methods
#72Nano-emitter ion source neutron generator
#73Multi-sensor workflow for evaluation of water flow in multiple casing strings with distributed sensors data
#74Casing inspection using pulsed neutron measurements
#75Field emission ion source neutron generator
#76Method and apparatus to identify functional issues of a neutron radiation generator
#77Method and system of a neutron tube
#78Pulsed neutron well logging method for determining multiple formation parameters
#79Directional measurements using neutron sources
#80Neutron through-pipe measurement, device, system and use thereof
#81Multiple source neutron measurement, device, system and use thereof
#82Determining mineralogy of an earth formation using linear regressions
#83Triple phase evaluation of formation fluids
#84Method and apparatus for regulating high voltage
#85Neutron generator
#86Composition-matched inelastic or capture spectroscopy tool
#87Thermally-protected scintillation detector
#88Neutron generator
#89Monitoring the output of a radiation generator
#90Neutron generator having multiple extractors with independently selectable potentials
#91Ambient-activated switch for downhole operations
#92Nanostructured neutron sensitive materials for well logging applications
#93System and method of determining a value indicative of hydrogen index
#94Nuclear radiation detector calibration downhole
#95Target extender in radiation generator
#96Method for measuring formation water salinity from within a borehole
#97Predicting mineralogy properties from elemental compositions
#98High throughput pulse height analyzer
#99Ion source employing secondary electron generation
#100Environmental corrections in nuclear spectroscopy using variable element ratio
#101Scintillator-based neutron detector for oilfield applications
#102Formation characterization for fast forward neutron models
#103NON-RADIOACTIVE TAGGED CEMENT ADDITIVE FOR CEMENT EVALUATION IN A WELL SYSTEM
#104Well-logging apparatus including azimuthally-spaced, noble gas-based detectors
#105Identification of neutron capture from a pulsed neutron logging tool
#106Well-logging apparatus including azimuthally spaced radiation detectors
#107Neutron generator and method of use
#108Corrected porosity measurements of underground formations
#109Borehole independent neutron porosity measurement
#110Radiation generator and power supply configuration for well logging instruments
#111REFINED LITHOLOGY CURVE
#112Downhole sensor tool for nuclear measurements
#113Apparatus and method for pulsed neutron measurement
#114Drop/Pump Memory Through-Casing Measurement Logging Tools
#115Neutron generator
#116Nuclear tool
#117Electrode configuration for downhole nuclear radiation generator
#118Neutron shielding for downhole tool
#119Downhole nuclear tool
#120Segmented tubular body
#121Thermally-protected scintillation detector
#122Ambient-activated switch for downhole operations
#123Determining downhole fluid flow
#124Neutron shielding for downhole tool
#125Methods for controlling ion beam and target voltage in a neutron generator for improved performance
#126Low power neutron generators
#127Neutron generator
#128Downhole Tools Having Combined D-D and D-T Neutron Generators
#129Integrated logging tool for borehole
#130Lifetime pulsed neutron/chlorine combination logging tool
#131Integrated logging tool for borehole
#132Systems and methods for high voltage conversion and multiplication for ionizing radiation detectors
#133Pulsed neutron determination of gravel pack density
#134Method for movement measurement of an instrument in a wellbore
#135System for kick detection during a drilling operation