ClassID:

173359

G01V5/04 - CPC Classification

Classification description:

Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging

Sub-classes:
Recent Application in this class:
#1
20260146531
2026-05-28

METHOD FOR LOG PREDICTION FROM DRILLING CUTTINGS

#2
20250377475
2025-12-11

MUON TOMOGRAPHY FOR SUBSURFACE STRUCTURE DETECTION USING HORIZONTAL BOREHOLE

#3
20250138216
2025-05-01

DRIFT TUBE BOREHOLE MUON DETECTOR SYSTEM, APPARATUS, AND METHOD FOR MUON RADIOGRAPHY AND TOMOGRAPHY

#4
20240418900
2024-12-19

MUON TOMOGRAPHY SYSTEM, APPARATUS, AND METHOD FOR TUNNEL DETECTION

#5
20240381522
2024-11-14

OPTIMIZATION OF A TARGET OF A DOWNHOLE NEUTRON GENERATOR

#6
20240345279
2024-10-17

APPARATUS, SYSTEM AND METHOD REGARDING BOREHOLE MUON DETECTOR FOR MUON RADIOGRAPHY AND TOMOGRAPHY

#7
20240229638
2024-07-11

PERCUSSION DRILLING APPARATUS AND METHOD FOR MEASUREMENT WHILE DRILLING

#8
20240142657
2024-05-02

Automatic landing of formation testing tools

#9
20240133289
2024-04-25

PERCUSSION DRILLING APPARATUS AND METHOD FOR MEASUREMENT WHILE DRILLING

#10
20240004102
2024-01-04

Drift tube borehole muon detector system, apparatus, and method for muon radiography and tomography

#11
20230304399
2023-09-28

System to determine existing fluids remaining saturation in homogenous and/or naturally fractured reservoirs

#12
20230258827
2023-08-17

Muon detector for muon tomography

#13
20230184084
2023-06-15

Method for determining pore pressures of a reservoir

#14
20230102216
2023-03-30

Drift tube borehole muon detector system, apparatus, and method for muon radiography and tomography

#15
20230025415
2023-01-26

Fit for purpose measurement system for drill hole logging

#16
20220373484
2022-11-24

Through-tubing, cased-hole sealed material density evaluation using gamma ray measurements

#17
20220299669
2022-09-22

Method for Combining the Results of Ultrasound and X-Ray and Neutron Cement Evaluation Logs Through Modality Merging

#18
20220283068
2022-09-08

System and method for material density distribution survey based on cosmic muon detection

#19
20220229205
2022-07-21

Apparatus, system and method regarding borehole muon detector for muon radiography and tomography

#20
20220222239
2022-07-14

METHOD TO IMPROVE THE ACCURACY OF FORMATION TOP PICKS

#21
20220196874
2022-06-23

Muon tomography system, apparatus, and method for tunnel detection

#22
20220107279
2022-04-07

Data-driven solutions for inverse elemental modeling

#23
20220024044
2022-01-27

Source automatic mounting and demounting control system and method for nuclear logging instruments

#24
20210286102
2021-09-16

Methods and systems to optimize downhole condition identification and response using different types of downhole sensing tools

#25
20210255355
2021-08-19

METHOD FOR COMBINING THE RESULTS OF ULTRASOUND AND X-RAY AND NEUTRON CEMENT EVALUATION LOGS THROUGH MODALITY MERGING

#26
20210142449
2021-05-13

Sharpening data representations of subterranean formations

#27
20210079782
2021-03-18

AUTONOMOUS LOGGING-WHILE-DRILLING ASSEMBLY

#28
20210026034
2021-01-28

Neutron imaging devices for cased wells and open boreholes

#29
20210025274
2021-01-28

System to determine existing fluids remaining saturation in homogeneous and/or naturally fractured reservoirs

#30
20210010369
2021-01-14

Electrical impulse earth-boring tools and related systems and methods

#31
20200386905
2020-12-10

Estimating wear for BHA components using borehole hardness

#32
20200348443
2020-11-05

Initial gain estimation for gamma detector

#33
20200292717
2020-09-17

Spectral gamma ray downhole logging tool

#34
20200225380
2020-07-16

Passive cased well image logging

#35
20200158666
2020-05-21

System and method for analyzing subsurface core samples

#36
20200116878
2020-04-16

Pseudogas neutron detector

#37
20200057173
2020-02-20

Spectral gamma ray downhole logging tool

#38
20200025967
2020-01-23

Formation clay typing from electromagnetic measurements

#39
20190353823
2019-11-21

Systems and Methods for Predicting or Identifying Underlying Features of Multidimensional Well-Logging Measurements

#40
20190212237
2019-07-11

Method and device for determining the density of rocky volumes or artificial buildings

#41
20190204470
2019-07-04

Gamma ray image logging tool sensor placement

#42
20190101666
2019-04-04

Methods and means for fracture mapping in a well bore

#43
20190086576
2019-03-21

Gamma ray spectra contrast sharpening

#44
20190004209
2019-01-03

Downhole system with integrated backup sensors

#45
20180328793
2018-11-15

Apparatus and method for monitoring production wells

#46
20180322622
2018-11-08

Non-destructive inspection methods and systems

#47
20180298709
2018-10-18

Methods and apparatus for collecting and preserving core samples from a reservoir

#48
20180217293
2018-08-02

API unit calibration of gamma ray logging tools using simulated data

#49
20180210095
2018-07-26

Integrated coupling of scintillation crystal with photomultiplier in a detector apparatus

#50
20180188409
2018-07-05

Systems and methods for monitoring radiation in well logging

#51
20180164470
2018-06-14

Combining Multiple Energy X-Ray Imaging And Well Data To Obtain High-Resolution Rock, Mechanical, And Elastic Property Profiles

#52
20180164469
2018-06-14

Passive cased well image logging

#53
20180164468
2018-06-14

Gamma ray image logging tool sensor placement

#54
20180135407
2018-05-17

Distributed scintillation detector for downhole positioning

#55
20180120473
2018-05-03

PRESSURE BALANCED LIQUID SCINTILLATOR FOR DOWNHOLE GAMMA DETECTION

#56
20180113233
2018-04-26

DETERMINATION OF CONCENTRATION OF CHEMICAL ELEMENTS IN AN EARTH FORMATION FROM NON-COAXIAL DUAL DETECTOR RADIATION MEASUREMENTS

#57
20180066516
2018-03-08

System, method, and computer program product to determine placement of fracture stimulation points using minerology

#58
20180061610
2018-03-01

Energy radiation generator with bi-polar voltage ladder

#59
20180058163
2018-03-01

Methods and apparatus for collecting and preserving core samples from a reservoir

#60
20180045008
2018-02-15

Methods and apparatus for collecting and preserving core samples from a reservoir

#61
20180017703
2018-01-18

PARTIALLY RUGGEDIZED RADIATION DETECTION SYSTEM

#62
20170343682
2017-11-30

SYSTEM AND METHODOLOGY UTILIZING A RADIATION DETECTOR

#63
20170329042
2017-11-16

Near-bit gamma ray sensors in a rotating section of a rotary steerable system

#64
20170321536
2017-11-09

Roller cone drill bit with embedded gamma ray detector

#65
20170315261
2017-11-02

Monitoring a geological formation

#66
20170298723
2017-10-19

Hydraulic casing collar locator

#67
20170293040
2017-10-12

Gain stabilization of radiation detectors via spectrum analysis

#68
20170276804
2017-09-28

Integrated nuclear sensor

#69
20170248011
2017-08-31

Methods for improving matrix density and porosity estimates in subsurface formations

#70
20170221593
2017-08-03

USING ADDITIVE MANUFACTURING TO PRODUCE SHIELDING OR MODULATING MATERIAL FOR NUCLEAR DETECTORS

#71
20170218745
2017-08-03

Programmable integrated measurement while drilling directional controller

#72
20170184731
2017-06-29

Gamma detector protection for downhole operations

#73
20170139063
2017-05-18

Gain stabilization of radiation detectors via spectrum analysis

#74
20170101866
2017-04-13

System and method to estimate a property in a borehole

#75
20170097426
2017-04-06

Radiation detection apparatus and related method

#76
20170089158
2017-03-30

Methods and apparatus for collecting and preserving core samples from a reservoir

#77
20170052280
2017-02-23

Drilling fluid property determination

#78
20170045640
2017-02-16

Standoff determination

#79
20160370494
2016-12-22

Measurement of downhole radiation

#80
20160370480
2016-12-22

Automatic method for three-dimensional structural interpretation of borehole images acquired in high-angle and horizontal wells

#81
20160349404
2016-12-01

Gain stabilization in a gamma ray detection apparatus

#82
20160334540
2016-11-17

Multi-variable workflow for cement evaluation in multiple casing strings

#83
20160334531
2016-11-17

System and method for joint inversion of bed boundaries and petrophysical properties from borehole logs

#84
20160327678
2016-11-10

System and method for dynamic formation detection using dynamic depth warping

#85
20160326865
2016-11-10

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

#86
20160320522
2016-11-03

Radiation generator and power supply configuration for well logging instruments

#87
20160274252
2016-09-22

Temperature correction of a gamma detector

#88
20160273336
2016-09-22

Multi-sensor workflow for evaluation of water flow in multiple casing strings

#89
20160215616
2016-07-28

Estimation of Skin Effect From Multiple Depth of Investigation Well Logs

#90
20160195637
2016-07-07

Combining multiple energy X-ray imaging and well data to obtain high-resolution rock, mechanical, and elastic property profiles

#91
20160139294
2016-05-19

Method and apparatus to determine pressure in a neutron radiation generator

#92
20160133428
2016-05-12

Radiation generator with frustoconical electrode configuration

#93
20160131793
2016-05-12

System and method for wellsite core sample analysis

#94
20160108687
2016-04-21

Means and Methods for Multirnodality Analysis and Processing of Drilling Mud

#95
20160041299
2016-02-11

Position-sensitive gamma detectors

#96
20160025892
2016-01-28

Environmental monitoring of logging-while-drilling tool components

#97
20160018493
2016-01-21

Measurement of NMR characteristics of an object containing fast transversal relaxation components

#98
20150309191
2015-10-29

Downhole gas-filled radiation detector with optical fiber

#99
20150268374
2015-09-24

Means and Methods for Multimodality Analysis and Processing of Drilling Mud

#100
20150253135
2015-09-10

Toroidal link for RPM measurement

#101
20150241594
2015-08-27

Radiation detector, processor module, and methods of detecting radiation and well logging

#102
20150212230
2015-07-30

Radiation Detector For Well-Logging Tool

#103
20150211355
2015-07-30

MWD system for unconventional wells

#104
20150185362
2015-07-02

Combined sonic/pulsed neutron cased hole logging tool

#105
20150184507
2015-07-02

System, method, and computer program product to determine placement of fracture stimulation points using minerology

#106
20150134255
2015-05-14

Stratigraphic and structural interpretation of deviated and horizontal wellbores

#107
20150129753
2015-05-14

Standoff specific corrections for density logging

#108
20150097112
2015-04-09

Shock mounted sensor package with thermal isolation

#109
20150076335
2015-03-19

COMPOSITE HIGH TEMPERATURE GAMMA RAY DETECTION MATERIAL FOR WELL LOGGING APPLICATIONS

#110
20150055748
2015-02-26

Energy radiation generator with uni-polar voltage ladder

#111
20150055747
2015-02-26

Energy radiation generator with bi-polar voltage ladder

#112
20150053393
2015-02-26

Downhole sensor tool for logging measurements

#113
20150014544
2015-01-15

Integrated coupling of scintillation crystal with photomultiplier in a detector apparatus

#114
20150014521
2015-01-15

Reducing disturbance during fiber optic sensing

#115
20140263997
2014-09-18

Radiation detector for well-logging tool

#116
20140263996
2014-09-18

Radiation generator having bi-polar electrodes

#117
20140263994
2014-09-18

Radiation detector for well-logging tool

#118
20140263993
2014-09-18

Ion source having negatively biased extractor

#119
20140251690
2014-09-11

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

#120
20140217273
2014-08-07

Correcting gamma-ray energy spectra for pileup degradation

#121
20140214324
2014-07-31

Predicting mineralogy properties from elemental compositions

#122
20140166872
2014-06-19

Ion source employing secondary electron generation

#123
20140131564
2014-05-15

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

#124
20140103202
2014-04-17

Combined sonic/pulsed neutron cased hole logging tool

#125
20140084150
2014-03-27

Scintillator with tapered geometry for radiation detectors

#126
20140084149
2014-03-27

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

#127
20140034821
2014-02-06

Well-logging apparatus including azimuthally-spaced, noble gas-based detectors

#128
20130313420
2013-11-28

Combined sonic/pulsed neutron cased hole logging tool

#129
20130277562
2013-10-24

Subatomic particle detector capable of ignoring shock induced counts

#130
20130253835
2013-09-26

Log inversion method for nuclear log data of earth formations

#131
20130240742
2013-09-19

Scintillation crystals having features on a side, radiation detection apparatuses including such scintillation crystals, and processes of forming the same

#132
20130233619
2013-09-12

Method of determining a formation parameter

#133
20130110402
2013-05-02

Method and apparatus for in-situ wellbore measurement and control with inductive connectivity

#134
20130092828
2013-04-18

Scintillation detection device with pressure sensitive adhesive interfaces

#135
20130061668
2013-03-14

Interchangeable measurement housings

#136
20120274328
2012-11-01

AXIAL HIGH VOLTAGE TRANSFORMER WITH SIGNAL PASS-THROUGH ABILITY

#137
20120267520
2012-10-25

Radiation generator and power supply configuration for well logging instruments

#138
20120241637
2012-09-27

Scintillators And Subterranean Detectors

#139
20120200421
2012-08-09

Method of using a detector in well-logging applications

#140
20120175513
2012-07-12

Sensor array configuration for swept-wavelength interferometric-based sensing systems

#141
20120138782
2012-06-07

Logging-while-drilling tool incorporating electronic radiation generator and method for using same

#142
20120097450
2012-04-26

System and method for automatic detection and analysis of borehole breakouts from images and the automatic generation of alerts

#143
20120091329
2012-04-19

Method for hydrocarbon saturation and hydraulic frac placement

#144
20120061559
2012-03-15

Downhole sensor tool for nuclear measurements

#145
20110303836
2011-12-15

Ruggedized neutron shields

#146
20110224906
2011-09-15

Method and apparatus for neutron porosity measurement using a neural network

#147
20110213555
2011-09-01

Time dependent neutron-gamma spectroscopy

#148
20110180697
2011-07-28

Time dependent measurement of formation properties using pulsed neutron generators

#149
20110161009
2011-06-30

Binning method for borehole imaging

#150
20110035151
2011-02-10

Subsurface nuclear measurement systems, methods and apparatus

#151
20110029246
2011-02-03

Gamma ray detectors having azimuthal sensitivity

#152
20110024613
2011-02-03

MATERIALS FOR USE AS STRUCTURAL NEUTRON MODERATORS IN WELL LOGGING TOOLS

#153
20100243905
2010-09-30

Radiation detector

#154
20100243877
2010-09-30

Scintillator based radiation detection

#155
20100193690
2010-08-05

Radiation detector device having a plurality of boot sections

#156
20100176286
2010-07-15

Detector for use in well-logging applications

#157
20090261263
2009-10-22

Radiation detector device

#158
20090261253
2009-10-22

Scintillation detector and method of making

#159
20090248309
2009-10-01

Evaluating a reservoir formation

#160
20090157317
2009-06-18

Radial density information from a Betatron density sonde

#161
20090114828
2009-05-07

RADIATION MONITORING DEVICE AND METHODS OF USE

#162
20090057545
2009-03-05

Downhole tools with solid-state neutron monitors

#163
20090014636
2009-01-15

Nanograss gamma detector

#164
20080265151
2008-10-30

Method and system for stabilizing gain of a photomultipler used with a radiation detector

#165
20080221800
2008-09-11

Method of determining downhole formation grain size distribution using acoustic and NMR logging data

#166
20080169415
2008-07-17

Compound optical coupler and support mechanism

#167
20080128604
2008-06-05

Geological tomography using cosmic rays

#168
20080011957
2008-01-17

Methods and apparatus for geophysical logging

#169
20070145260
2007-06-28

Instrumentation package and integrated radiation detector

#170
20060192126
2006-08-31

Compound optical coupler and support mechanism

#171
20060180753
2006-08-17

Geological tomography using cosmic rays

#172
20060149477
2006-07-06

Measurement-while-drilling assembly using real-time toolface oriented measurements

#173
20050100307
2005-05-12

Fiber optic brush light detector and method

#174
18415710
2024-12-24

Method and system for GR LWD curve optimization for deep-field oil and gas precise navigation

#175
15453908
2020-03-10

Systems and methods for underground exploration using cosmic rays muons

#176
13243557
2015-07-28

Dynamic drilling monitoring system

#177
13243494
2015-11-10

Drilling rig for horizontal, lateral, and directional drilling that is adjustable in real time