173359 ⎘
Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
Sub-classes:METHOD FOR LOG PREDICTION FROM DRILLING CUTTINGS
#2MUON TOMOGRAPHY FOR SUBSURFACE STRUCTURE DETECTION USING HORIZONTAL BOREHOLE
#3DRIFT TUBE BOREHOLE MUON DETECTOR SYSTEM, APPARATUS, AND METHOD FOR MUON RADIOGRAPHY AND TOMOGRAPHY
#4MUON TOMOGRAPHY SYSTEM, APPARATUS, AND METHOD FOR TUNNEL DETECTION
#5OPTIMIZATION OF A TARGET OF A DOWNHOLE NEUTRON GENERATOR
#6APPARATUS, SYSTEM AND METHOD REGARDING BOREHOLE MUON DETECTOR FOR MUON RADIOGRAPHY AND TOMOGRAPHY
#7PERCUSSION DRILLING APPARATUS AND METHOD FOR MEASUREMENT WHILE DRILLING
#8Automatic landing of formation testing tools
#9PERCUSSION DRILLING APPARATUS AND METHOD FOR MEASUREMENT WHILE DRILLING
#10Drift tube borehole muon detector system, apparatus, and method for muon radiography and tomography
#11System to determine existing fluids remaining saturation in homogenous and/or naturally fractured reservoirs
#12Muon detector for muon tomography
#13Method for determining pore pressures of a reservoir
#14Drift tube borehole muon detector system, apparatus, and method for muon radiography and tomography
#15Fit for purpose measurement system for drill hole logging
#16Through-tubing, cased-hole sealed material density evaluation using gamma ray measurements
#17Method for Combining the Results of Ultrasound and X-Ray and Neutron Cement Evaluation Logs Through Modality Merging
#18System and method for material density distribution survey based on cosmic muon detection
#19Apparatus, system and method regarding borehole muon detector for muon radiography and tomography
#20METHOD TO IMPROVE THE ACCURACY OF FORMATION TOP PICKS
#21Muon tomography system, apparatus, and method for tunnel detection
#22Data-driven solutions for inverse elemental modeling
#23Source automatic mounting and demounting control system and method for nuclear logging instruments
#24Methods and systems to optimize downhole condition identification and response using different types of downhole sensing tools
#25METHOD FOR COMBINING THE RESULTS OF ULTRASOUND AND X-RAY AND NEUTRON CEMENT EVALUATION LOGS THROUGH MODALITY MERGING
#26Sharpening data representations of subterranean formations
#27AUTONOMOUS LOGGING-WHILE-DRILLING ASSEMBLY
#28Neutron imaging devices for cased wells and open boreholes
#29System to determine existing fluids remaining saturation in homogeneous and/or naturally fractured reservoirs
#30Electrical impulse earth-boring tools and related systems and methods
#31Estimating wear for BHA components using borehole hardness
#32Initial gain estimation for gamma detector
#33Spectral gamma ray downhole logging tool
#34Passive cased well image logging
#35System and method for analyzing subsurface core samples
#36Pseudogas neutron detector
#37Spectral gamma ray downhole logging tool
#38Formation clay typing from electromagnetic measurements
#39Systems and Methods for Predicting or Identifying Underlying Features of Multidimensional Well-Logging Measurements
#40Method and device for determining the density of rocky volumes or artificial buildings
#41Gamma ray image logging tool sensor placement
#42Methods and means for fracture mapping in a well bore
#43Gamma ray spectra contrast sharpening
#44Downhole system with integrated backup sensors
#45Apparatus and method for monitoring production wells
#46Non-destructive inspection methods and systems
#47Methods and apparatus for collecting and preserving core samples from a reservoir
#48API unit calibration of gamma ray logging tools using simulated data
#49Integrated coupling of scintillation crystal with photomultiplier in a detector apparatus
#50Systems and methods for monitoring radiation in well logging
#51Combining Multiple Energy X-Ray Imaging And Well Data To Obtain High-Resolution Rock, Mechanical, And Elastic Property Profiles
#52Passive cased well image logging
#53Gamma ray image logging tool sensor placement
#54Distributed scintillation detector for downhole positioning
#55PRESSURE BALANCED LIQUID SCINTILLATOR FOR DOWNHOLE GAMMA DETECTION
#56DETERMINATION OF CONCENTRATION OF CHEMICAL ELEMENTS IN AN EARTH FORMATION FROM NON-COAXIAL DUAL DETECTOR RADIATION MEASUREMENTS
#57System, method, and computer program product to determine placement of fracture stimulation points using minerology
#58Energy radiation generator with bi-polar voltage ladder
#59Methods and apparatus for collecting and preserving core samples from a reservoir
#60Methods and apparatus for collecting and preserving core samples from a reservoir
#61PARTIALLY RUGGEDIZED RADIATION DETECTION SYSTEM
#62SYSTEM AND METHODOLOGY UTILIZING A RADIATION DETECTOR
#63Near-bit gamma ray sensors in a rotating section of a rotary steerable system
#64Roller cone drill bit with embedded gamma ray detector
#65Monitoring a geological formation
#66Hydraulic casing collar locator
#67Gain stabilization of radiation detectors via spectrum analysis
#68Integrated nuclear sensor
#69Methods for improving matrix density and porosity estimates in subsurface formations
#70USING ADDITIVE MANUFACTURING TO PRODUCE SHIELDING OR MODULATING MATERIAL FOR NUCLEAR DETECTORS
#71Programmable integrated measurement while drilling directional controller
#72Gamma detector protection for downhole operations
#73Gain stabilization of radiation detectors via spectrum analysis
#74System and method to estimate a property in a borehole
#75Radiation detection apparatus and related method
#76Methods and apparatus for collecting and preserving core samples from a reservoir
#77Drilling fluid property determination
#78Standoff determination
#79Measurement of downhole radiation
#80Automatic method for three-dimensional structural interpretation of borehole images acquired in high-angle and horizontal wells
#81Gain stabilization in a gamma ray detection apparatus
#82Multi-variable workflow for cement evaluation in multiple casing strings
#83System and method for joint inversion of bed boundaries and petrophysical properties from borehole logs
#84System and method for dynamic formation detection using dynamic depth warping
#85Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells
#86Radiation generator and power supply configuration for well logging instruments
#87Temperature correction of a gamma detector
#88Multi-sensor workflow for evaluation of water flow in multiple casing strings
#89Estimation of Skin Effect From Multiple Depth of Investigation Well Logs
#90Combining multiple energy X-ray imaging and well data to obtain high-resolution rock, mechanical, and elastic property profiles
#91Method and apparatus to determine pressure in a neutron radiation generator
#92Radiation generator with frustoconical electrode configuration
#93System and method for wellsite core sample analysis
#94Means and Methods for Multirnodality Analysis and Processing of Drilling Mud
#95Position-sensitive gamma detectors
#96Environmental monitoring of logging-while-drilling tool components
#97Measurement of NMR characteristics of an object containing fast transversal relaxation components
#98Downhole gas-filled radiation detector with optical fiber
#99Means and Methods for Multimodality Analysis and Processing of Drilling Mud
#100Toroidal link for RPM measurement
#101Radiation detector, processor module, and methods of detecting radiation and well logging
#102Radiation Detector For Well-Logging Tool
#103MWD system for unconventional wells
#104Combined sonic/pulsed neutron cased hole logging tool
#105System, method, and computer program product to determine placement of fracture stimulation points using minerology
#106Stratigraphic and structural interpretation of deviated and horizontal wellbores
#107Standoff specific corrections for density logging
#108Shock mounted sensor package with thermal isolation
#109COMPOSITE HIGH TEMPERATURE GAMMA RAY DETECTION MATERIAL FOR WELL LOGGING APPLICATIONS
#110Energy radiation generator with uni-polar voltage ladder
#111Energy radiation generator with bi-polar voltage ladder
#112Downhole sensor tool for logging measurements
#113Integrated coupling of scintillation crystal with photomultiplier in a detector apparatus
#114Reducing disturbance during fiber optic sensing
#115Radiation detector for well-logging tool
#116Radiation generator having bi-polar electrodes
#117Radiation detector for well-logging tool
#118Ion source having negatively biased extractor
#119Logging-while-drilling tool incorporating electronic radiation generator and method for using same
#120Correcting gamma-ray energy spectra for pileup degradation
#121Predicting mineralogy properties from elemental compositions
#122Ion source employing secondary electron generation
#123Radiation detection apparatus using pulse discrimination and a method of using the same
#124Combined sonic/pulsed neutron cased hole logging tool
#125Scintillator with tapered geometry for radiation detectors
#126Use of spectral information to extend temperature range of gamma-ray detector
#127Well-logging apparatus including azimuthally-spaced, noble gas-based detectors
#128Combined sonic/pulsed neutron cased hole logging tool
#129Subatomic particle detector capable of ignoring shock induced counts
#130Log inversion method for nuclear log data of earth formations
#131Scintillation crystals having features on a side, radiation detection apparatuses including such scintillation crystals, and processes of forming the same
#132Method of determining a formation parameter
#133Method and apparatus for in-situ wellbore measurement and control with inductive connectivity
#134Scintillation detection device with pressure sensitive adhesive interfaces
#135Interchangeable measurement housings
#136AXIAL HIGH VOLTAGE TRANSFORMER WITH SIGNAL PASS-THROUGH ABILITY
#137Radiation generator and power supply configuration for well logging instruments
#138Scintillators And Subterranean Detectors
#139Method of using a detector in well-logging applications
#140Sensor array configuration for swept-wavelength interferometric-based sensing systems
#141Logging-while-drilling tool incorporating electronic radiation generator and method for using same
#142System and method for automatic detection and analysis of borehole breakouts from images and the automatic generation of alerts
#143Method for hydrocarbon saturation and hydraulic frac placement
#144Downhole sensor tool for nuclear measurements
#145Ruggedized neutron shields
#146Method and apparatus for neutron porosity measurement using a neural network
#147Time dependent neutron-gamma spectroscopy
#148Time dependent measurement of formation properties using pulsed neutron generators
#149Binning method for borehole imaging
#150Subsurface nuclear measurement systems, methods and apparatus
#151Gamma ray detectors having azimuthal sensitivity
#152MATERIALS FOR USE AS STRUCTURAL NEUTRON MODERATORS IN WELL LOGGING TOOLS
#153Radiation detector
#154Scintillator based radiation detection
#155Radiation detector device having a plurality of boot sections
#156Detector for use in well-logging applications
#157Radiation detector device
#158Scintillation detector and method of making
#159Evaluating a reservoir formation
#160Radial density information from a Betatron density sonde
#161RADIATION MONITORING DEVICE AND METHODS OF USE
#162Downhole tools with solid-state neutron monitors
#163Nanograss gamma detector
#164Method and system for stabilizing gain of a photomultipler used with a radiation detector
#165Method of determining downhole formation grain size distribution using acoustic and NMR logging data
#166Compound optical coupler and support mechanism
#167Geological tomography using cosmic rays
#168Methods and apparatus for geophysical logging
#169Instrumentation package and integrated radiation detector
#170Compound optical coupler and support mechanism
#171Geological tomography using cosmic rays
#172Measurement-while-drilling assembly using real-time toolface oriented measurements
#173Fiber optic brush light detector and method
#174Method and system for GR LWD curve optimization for deep-field oil and gas precise navigation
#175Systems and methods for underground exploration using cosmic rays muons
#176Dynamic drilling monitoring system
#177Drilling rig for horizontal, lateral, and directional drilling that is adjustable in real time