173372 ⎘
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 gamma or X-ray sources and detecting the secondary gamma- or X-rays in different places along the bore hole
SYSTEM AND METHOD FOR A CEMENT AND CASING FLAW DETECTOR WITH MULTI-SIZED WINDOWS AND CONTRAST SUPPRESSION
#2DETERMINATIONS OF STANDOFF AND MUD DENSITY WITH GAMMA DENSITY AND ACOUSTIC TOOL RESPONSES
#3Methods and Means for Identifying Fluid Type Inside a Conduit
#4Real-Time Correction of Calibration Constants of a Bore-Hole Logging Tool Using a Reference Detector
#5Through-tubing, cased-hole sealed material density evaluation using gamma ray measurements
#6Gamma spectral analysis
#7Real-Time Output Correction of Detector Outputs Resulting from Azimuthal X-Ray Source Variations Using Monitoring Detectors
#8Density Measurement Of A Selected Layer By Gamma Spectral Deconvolution
#9Data-driven solutions for inverse elemental modeling
#10Density measurement of a selected layer by gamma spectral deconvolution
#11Layer density measurement using a narrow energy attenuation track
#12METHODS AND MEANS FOR IDENTIFYING FLUID TYPE INSIDE A CONDUIT
#13Gamma logging tool assembly
#14Real-Time Correction of Calibration Constants of a Bore-Hole Logging Tool Using a Reference Detector
#15X-ray downhole tool with at least two targets and at least one measurement detector
#16Regulated charged particle beam emitter systems and methods
#17System and method for analyzing subsurface core samples
#18Device and method to position an end effector in a well
#19Inverse geometry x-ray machine deployment in wellbore
#20Rotating spectral density tool for behind pipe evaluation
#21Drill stem module for downhole analysis
#22Mechanical integrity test system and method of using same
#23Methods and means for fracture mapping in a well bore
#24Compensated neutron correction for contributions outside the petrophysical model
#25Gamma ray spectra contrast sharpening
#26METHODS AND MEANS FOR IDENTIFYING FLUID TYPE INSIDE A CONDUIT
#27Apparatus and method for inspecting integrity of a multi-barrier wellbore
#28Determining a characteristic of a material surrounding a wellbore based on count rates of scattered photons
#29Downhole tool apparatus, system, and methods
#30Cement evaluation with X-ray tomography
#31Determining tubing wall thickness
#32X-Ray generator regulation with high energy tail windows
#33Downhole gamma-ray generators and systems to generate gamma-rays in a downhole environment
#34Material evaluation using nuclear logging tool
#35Method for proactive mitigation of coronal discharge and flash-over events within high voltage x-ray generators used in borehole logging
#36Near-bit ultradeep measurement system for geosteering and formation evaluation
#37Downhole X-ray radiation detector systems and methods
#38Formation independent cement evaluation with active gamma ray detection
#39X-ray downhole tool with at least two targets and at least one measurement detector
#40Near-bit ultradeep measurement system for geosteering and formation evaluation
#41Gamma-ray detectors for downhole applications
#42X-ray generator regulation with high energy tail windows
#43Behind pipe evaluation using a nuclear density tool
#44Injection well identification using tracer particles
#45LOGGING-WHILE-DRILLING TOOL INCORPORATING ELECTRONIC RADIATION GENERATOR AND METHOD OF USING SAME
#46Method and apparatus for downhole photon imaging
#47Downhole logging system with azimuthal and radial sensitivity
#48Casing inspection using pulsed neutron measurements
#49Inline density and fluorescence spectrometry meter
#50Methods and means for creating three-dimensional borehole image data
#51System and method for estimating material density
#52Radiation generator with frustoconical electrode configuration
#53Pulsed neutron well logging method for determining multiple formation parameters
#54Casing inspection using pulsed neutron measurements
#55Neutron and gamma sensitive fiber scintillators
#56Method and system for evaluation of gamma-gamma well logging data in mineral exploration
#57Method and system for density correction for geophysical well logging inside drilling rods
#58Method and system for quality control in gamma-gamma data during mineral exploration
#59Standoff specific corrections for density logging
#60Pulsed-neutron tool methods and systems for monitoring casing corrosion
#61Gamma-ray detectors for downhole applications
#62Energy radiation generator with uni-polar voltage ladder
#63Energy radiation generator with bi-polar voltage ladder
#64Method of Correcting Mineral Ore Density Logs
#65Azimuthal cement density image measurements
#66Logging-while-drilling tool incorporating electronic radiation generator and method for using same
#67Method of determining an element value
#68Detection of tool in pipe
#69Gas detection and quantification method using a pulsed neutron logging tool
#70Segmented radiation detector and apparatus and method for using same
#71SYSTEM AND METHOD TO PERFORM FORMATION IMAGING
#72Logging tool for determination of formation density and methods of use
#73Gamma-ray detectors for downhole applications
#74Methods and systems of formation density measurements in the presence of invasion of drilling fluids
#75Method for detecting fractures and perforations in a subterranean formation
#76Method for inspecting a subterranean tubular
#77Measurement of formation porosity using a single gamma ray detector
#78METHOD OF CALCULATING FORMATION CHARACTERISTICS
#79Logging-while-drilling tool incorporating electronic radiation generator and method for using same
#80Method and apparatus for interrogating a subterranean annulus
#81Method for through-casing 3-phase saturation determination
#82Method of extracting formation density and Pe using a pulsed accelerator based litho-density tool
#83Detection of tool in pipe
#84Well flaw detection system (embodiments)
#85Gamma-ray detectors for downhole applications
#86System and method of predicting gas saturation of a formation using neural networks
#87Formation evaluation using a bit-based active radiation source and a gamma ray detector
#88System and method for generating density in a cased-hole wellbore
#89Method and apparatus for neutron porosity measurement using a neural network
#90Real-Time Lithology and Mineralogy Interpretation
#91Gamma-gamma density measurement system for high-pressure, high-temperature measurements
#92Method and apparatus for borehole logging
#93Method and apparatus for determining formation and fluid properties
#94Gamma ray generator
#95LOGGING TOOL AND METHOD FOR DETERMINATION OF FORMATION DENSITY
#96Method for taking gamma-gamma density measurements
#97Volume of investigation based density image processing
#98Borehole characterization
#99GRAVEL PACK ASSESSMENT TOOL AND METHODS OF USE
#100Azimuthal elemental imaging
#101APPARATUS AND METHOD FOR DETECTING GAMMA RAY RADIATION
#102Methods and apparatus for exploring geological formations utilizing strontium measurements
#103Downhole imaging tool utilizing x-ray generator
#104Compensated caliper using combined acoustic and density measurements
#105Method of determining petro-physical information with high energy gamma rays
#106Method to simultaneously determine pore hydrocarbon density and water saturation from pulsed neutron measurements
#107Apparent dip angle calculation and image compression based on region of interest
#108Shielded pads for detecting subsurface radiation phenomena
#109Measurement of standoff corrected photoelectric factor
#110LOGGING TOOL FOR DETERMINATION OF FORMATION DENSITY (EMBODIMENTS)
#111Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrations
#112Standoff correction for LWD density measurement
#113Apparatus and method for detecting gamma ray radiation
#114Pileup rejection
#115Neutron source for well logging
#116Nuclear imaging probe
#117Method of calibrating multi-channel nuclear energy spectra
#118Measurement of water-oil saturation using pulsed neutron instrumentation
#119Corrections of gamma-ray responses
#120Shielded pads for detecting subsurface radiation phenomena
#121Logging tool with a parasitic radiation shield and method of logging with such a tool
#122Method of compensating a density log
#123Method for determining formation porosity and gas saturation in a gas reservoir
#124Azimuthal binning of density and porosity data
#125Pseudogas neutron detector
#126System and method for monitoring a wellbore
#127System for kick detection during a drilling operation