PULSED NEUTRON METHODS FOR DOWNHOLE FORMATION EVALUATION AND MONITORING OF NATURAL HYDROGEN SOURCE ROCK AND RESERVOIRS

TEMPERATURE COMPENSATION FOR PHOTOMULTIPLIER TUBE

Device for evaluating a uranium content and a hydrogen porosity of a particular region in a geological formation when drilling and associated method

ON SURFACE GAMMA RAY SENSOR FOR CALIBRATING CUTTINGS DEPTH IN UNDERBALANCED COILED TUBING DRILLING RIGS

SYSTEM AND METHOD FOR ESTIMATING RARE EARTH RESOURCES IN DEEP-SEA SEDIMENTS USING GAMMA RAYS

SYSTEM AND METHOD FOR MATCHING BED BOUNDARIES AND DEPTH BETWEEN CORE AND WELL LOGS

METHOD FOR ASSESSING THE URANIUM CONTENT IN A BOREHOLE USING GAMMA SPECTROMETRY AND ASSOCIATED DEVICE

DETERMINING RESERVOIR FORMATION FACIES

GARNET SCINTILLATOR COMPOSITIONS FOR DOWNHOLE OIL AND GAS EXPLORATIONS

FAST FORWARD METHOD AND SYSTEM FOR GAMMA-RAY LOGGING OF HIGHLY-DEVIATED AND HORIZONTAL WELLS

METHODS AND SYSTEMS TO IDENTIFY FORMATIONS WITH MINIMUM CLAY RELATED NATURAL GAMMA RAYS

Hydrocarbon Reservoir Saturation Logging

Five-point deconvolution interpretation method for quantification of uranium ores by gamma spectrum logging

Subsurface continuous radioisotope environmental monitor

System and method for radioactivity prediction to evaluate formation productivity

Gamma spectral analysis

Garnet scintillator compositions for downhole oil and gas explorations

Method and system for predicting formation top depths

Azimuthal borehole rendering of radioelement spectral gamma data

Drilling fluid activation correction via neutron generator modulation

IN-LINE MUD LOGGING APPARATUS

IN-LINE MUD LOGGING SYSTEM

Drilling fluid activation correction methodology

Monte Carlo modeling of thorium blanket field calibrators

Radiochemical and chromatographic analysis system of tracers, in situ and in real time

Temperature compensated sensor gain calibration

Initial gain estimation for gamma detector

Calibration of a gamma logging tool

Calibrating wellbore spectrometers

Passive cased well image logging

Geochemical photoelectric logging systems and methods

Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells

Gas isotope analysis

Gamma ray counter

System and method for well cybersteering

Gamma ray image logging tool sensor placement

Shock resistant downhole gamma ray detector assembly

System and method for wellbore surveying using directional gamma detection

Integrated logging tool

Apparatus and method for flexible gamma ray detectors

Methods of elemental imaging of formations and systems for producing the same

SCINTILLATING GAMMA RAY SPECROMETER AND ITS USE IN MUD LOGGING SYSTEM

Temperature performance of a scintillator-based radiation detector system

Determination of near wellbore properties using natural gamma rays

Determination of radiation tracer distribution using natural gamma rays

Logging-while-drilling spectral and azimuthal gamma ray apparatus and methods

Passive cased well image logging

Gamma ray image logging tool sensor placement

METHOD FOR DETERMINING ELEMENTAL CONCENTRATIONS IN SPECTRAL GAMMA RAY LOGGING

Distributed scintillation detector for downhole positioning

Method and system for correcting a natural gamma-ray measurement performed in a wellbore

Gamma detection sensors in a rotary steerable tool

Visualization of look-ahead sensor data for wellbore drilling tools

Digital spectrometer for measuring ironizing radiation downhole

Roller cone drill bit with embedded gamma ray detector

SCINTILLATOR INCLUDING AN ELPASOLITE SCINTILLATOR COMPOUND AND APPARATUS INCLUDING THE SCINTILLATOR

Integrated nuclear sensor

Gain stabilization of a natural gamma ray tool

Thermal maturity determination of rock formations using mud gas isotope logging

Downhole tool and method for imaging a wellbore

Method for determining characteristics of a gas-oil transition zone in an uncased well

System and method for wellbore surveying using directional gamma detection

Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells

Gamma ray measurement apparatus, systems, and methods

Scintillation crystal including a co-doped sodium halide, and a radiation detection apparatus including the scintillation crystal

Scintillation detectors and methods for enhanced light gathering

Scintillator including an elpasolite scintillator compound and apparatus including the scintillator

Method and apparatus for detecting gamma radiation downhole

Gamma ray detectors with gain stabilization

FAST SCINTILLATION HIGH DENSITY OXIDE AND OXY-FLUORIDE GLASS AND NANO-STRUCTURED MATERIALS FOR WELL LOGGING APPLICATIONS

Detector packages

GAMMA PROBE HEALTH DETECTION ASSEMBLY

Measurement technique utilizing novel radiation detectors in and near pulsed neutron generator tubes for well logging applications using solid state materials

Systems and methods for processing geophysical data

Measurement of downhole gamma radiation by reduction of compton scattering

Method of Correcting Mineral Ore Density Logs

Method and apparatus for measuring the radioactive content of materials

Method for verifying age-depth relationships of rock in sedimentary basins

Radiation detection apparatus using pulse discrimination and a method of using the same

Use of spectral information to extend temperature range of gamma-ray detector

Log inversion method for nuclear log data of earth formations

Density derived from spectra of natural radioactivity

Method for Determining the Genetic Fingerpring of Hydrocarbons and Other Geological Fluids using Noble Gas Geochemistry

Density Derived From Spectra of Natural Radioactivity

HYDROCARBON DETECTION SYSTEM AND METHOD

Optically Stimulated Luminescence Radiation Measurement Device

REFINED LITHOLOGY CURVE

Apparatus and method for measuring downhole fluid composition and properties

Directional radiation detection tool

Subsurface nuclear measurement systems, methods and apparatus

USE OF SOLID CRYSTALS AS CONTINUOUS LIGHT PIPES TO FUNNEL LIGHT INTO PMT WINDOW

Gamma ray tool response modeling

RARE-EARTH MATERIALS, SCINTILLATOR CRYSTALS, AND RUGGEDIZED SCINTILLATOR DEVICES INCORPORATING SUCH CRYSTALS

Bit based formation evaluation using a gamma ray sensor

Compensated mineralogy tool and processing

High resolution gamma measurements and imaging

Method and apparatus for high resolution gamma ray measurements

Condensation-induced gamma radiation as a method for the identification of condensable vapor

Gamma radiation spectral logging system and method for processing gamma radiation spectra

Buried object evaluating method, underground resources evaluating method, underground waste evaluating method, underground preserved object evaluating method, stratum structure evaluating method and building interior monitoring method, all using hard X-rays or y-rays

Computed radiography cassette system

Method and apparatus for shale bed detection in deviated and horizontal wellbores

Method for determining shale bed boundaries and gamma ray activity with gamma ray instrument

Gain stabilization apparatus and methods for spectral gamma ray measurement systems

Spectral gamma ray logging-while-drilling system

Geosteering of solid mineral mining machines

Buried object evaluating method, underground resources evaluating method, underground waste evaluating method, underground preserved object evaluating method, stratum structure evaluating method and building interior monitoring method, all using hard X-rays or γ-rays

Method for determining distribution of uranium deposit