ClassID:

135714

E21B47/124 - CPC Classification

Classification description:

Recent Application in this class:
#1
20210293136
2021-09-23

Use of surface and downhole measurements to identify operational anomalies

#2
20210277763
2021-09-09

Automating well construction operations based on detected abnormal events

#3
20210254453
2021-08-19

Stand break detection systems and methods

#4
20210199004
2021-07-01

System to enhance telemetry communication in well intervention operation

#5
20210131264
2021-05-06

Earth-boring drill bit with mechanically attached strain puck

#6
20210108468
2021-04-15

Connector ring

#7
20210017847
2021-01-21

METHOD OF MODELING FLUID FLOW DOWNHOLE AND RELATED APPARATUS AND SYSTEMS

#8
20200308951
2020-10-01

Automatic drill pipe coupling detection control system

#9
20200248547
2020-08-06

Downhole display

#10
20200225193
2020-07-16

Renewable power system and method for pipeline inspection tools

#11
20200208510
2020-07-02

Distributed remote logging

#12
20200200930
2020-06-25

Validating Accuracy of Sensor Measurements

#13
20200174151
2020-06-04

Methods and systems with estimated synchronization between modular downhole logging system modules

#14
20200149386
2020-05-14

Generating drilling paths using a drill model

#15
20200125040
2020-04-23

Wellbore non-retrieval sensing system

#16
20200116016
2020-04-16

Measurement-while-drilling method and device for obtaining coal seam gas parameter

#17
20200109619
2020-04-09

System and method for downhole and surface measurements for an electric submersible pump

#18
20200109610
2020-04-09

Control, timing, positioning, and modulation of pistons in high-pressure fluid ends

#19
20200080418
2020-03-12

SYSTEM AND METHOD FOR MULTI-FREQUENCY DOWNHOLE BUS COMMUNICATION

#20
20200072005
2020-03-05

Statorless shear valve pulse generator

#21
20200040676
2020-02-06

Self-regulating turbine flow

#22
20200032646
2020-01-30

Downhole communication network

#23
20200018156
2020-01-16

Downhole vibration and impact data recording method

#24
20200003049
2020-01-02

Device for power transmission and signal transfer between stator and rotor of screw drilling tool

#25
20190383132
2019-12-19

Sensor for a downhole tool

#26
20190368346
2019-12-05

Determining safe drilling mud weight

#27
20190368286
2019-12-05

TORQUE TURN LOGGER

#28
20190345809
2019-11-14

Earth-boring tool rate of penetration and wear prediction system and related methods

#29
20190332089
2019-10-31

Method and device for obtaining measurements of downhole properties in a subterranean well

#30
20190330978
2019-10-31

DEPLOYMENT APPARATUS AND METHODS

#31
20190292900
2019-09-26

System and method for analyzing wellbore survey data to determine tortuosity of the wellbore using displacements of the wellbore path from reference lines

#32
20190273973
2019-09-05

Self-powered microsensors for in-situ spatial and temporal measurements and methods of using same in hydraulic fracturing

#33
20190265656
2019-08-29

Wellbore non-retrieval sensing system

#34
20190264515
2019-08-29

Logging-while-tripping system and methods

#35
20190257187
2019-08-22

Downhole well integrity reconstruction in the hydrocarbon industry

#36
20190242242
2019-08-08

One-way flow monitoring device and oil well liquid production capacity calculation method

#37
20190242221
2019-08-08

Method to predict reservoir formation permeability using combined acoustic and multi-frequency dielectric measurements

#38
20190227499
2019-07-25

Wellbore non-retrieval sensing system

#39
20190226332
2019-07-25

System and method for multi-frequency downhole bus communication

#40
20190226311
2019-07-25

Methods and electrically-actuated apparatus for wellbore operations

#41
20190226291
2019-07-25

Mitigating Swab and Surge Piston Effects in Wellbores

#42
20190213205
2019-07-11

System and method for storing and retrieving channel data

#43
20190204468
2019-07-04

Borehole imaging using amplitudes of refracted acoustic waves

#44
20190186259
2019-06-20

Energy efficient method of retrieving wireless networked sensor data

#45
20190186256
2019-06-20

Distributed sensor arrays for measuring one or more of pressure and temperature and related methods and assemblies

#46
20190186253
2019-06-20

Methods and systems azimuthal locking for drilling operations

#47
20190154868
2019-05-23

Antenna designs for wellbore logging tools

#48
20190145254
2019-05-16

Single packer inlet configurations

#49
20190145247
2019-05-16

Inspection of pipes with buckling effects

#50
20190145173
2019-05-16

Closed loop control of drilling toolface

#51
20190137045
2019-05-09

Method and system for detecting whether an acoustic event has occurred along a fluid conduit

#52
20190136688
2019-05-09

Method and apparatus for controlling wellbore operations

#53
20190101872
2019-04-04

Wellbore non-retrieval sensing system

#54
20190071963
2019-03-07

Safety interlock and triggering system and method

#55
20190063195
2019-02-28

INFLOW CONTROL APPARATUS, METHODS, AND SYSTEMS

#56
20190056355
2019-02-21

Detection of pipe characteristics with a remote field eddy current

#57
20190048715
2019-02-14

Distributed remote logging

#58
20190040735
2019-02-07

METHOD AND SYSTEM FOR ENABLING AT SURFACE CORE ORIENTATION DATA TRANSFER

#59
20190032480
2019-01-31

Automated inversion workflow for defect detection tools

#60
20190024500
2019-01-24

Method and System for Improving Quality of Directional Surveys

#61
20190017799
2019-01-17

Proximity sensor for subsea rotating equipment

#62
20190010799
2019-01-10

Apparatus and method for semi-three-dimensional rock formation imaging along the borehole sidewall

#63
20190003301
2019-01-03

Sealing device test systems and methods

#64
20180371893
2018-12-27

Modeled transmitter and receiver coils with variable title angles for formation scanning

#65
20180356553
2018-12-13

SIGNAL CANCELLATION IN PIPE INSPECTION

#66
20180348396
2018-12-06

Determining permeability in subsurface anisotropic formations

#67
20180347346
2018-12-06

ESP MOTOR OIL QUALITY MONITORING GAUGE

#68
20180347319
2018-12-06

Self-powered wellbore motor

#69
20180329103
2018-11-15

Capacitive electromagnetic formation surveillance using passive source

#70
20180291732
2018-10-11

Gauge with adaptive calibration and method

#71
20180283170
2018-10-04

DOWNHOLE LOGGING SYSTEMS AND METHODS EMPLOYING ADJUSTABLY-SPACED MODULES

#72
20180283162
2018-10-04

SYSTEMS AND METHODS FOR MONITORING SUBSEA WELLHEAD SYSTEMS

#73
20180283156
2018-10-04

Binning During Non-Rotation Drilling in a Wellbore

#74
20180252837
2018-09-06

Determining borehole parameters using ultrasonic and micro-resistivity calipers

#75
20180245448
2018-08-30

Degradable isolation devices with data recorders

#76
20180230777
2018-08-16

Subassembly for a bottom hole assembly of a drill string with communications link

#77
20180217293
2018-08-02

API unit calibration of gamma ray logging tools using simulated data

#78
20180210107
2018-07-26

Reducing effects of conductive mud on single-well ranging

#79
20180209261
2018-07-26

System and method for installing casing in a blind horizontal well

#80
20180203154
2018-07-19

Modular electrode tool for improved hydraulic fracture diagnostics

#81
20180195980
2018-07-12

Identification of annulus materials using formation porosity

#82
20180171779
2018-06-21

STEAM QUALITY MEASURING DEVICE

#83
20180171738
2018-06-21

Downhole assembly including degradable-on-demand material and method to degrade downhole tool

#84
20180066513
2018-03-08

Drilling dynamics data recorder

#85
20180051556
2018-02-22

Modulating downhole reflector

#86
20180010446
2018-01-11

Repeater for a wellbore

#87
20170362914
2017-12-21

Borehole data transmission method for flowed back borehole plugs with a lower slip assembly or object landed on said plugs

#88
20170356287
2017-12-14

Traceable micro-electro-mechanical systems for use in subterranean formations

#89
20170350242
2017-12-07

Adjustable acoustic transducers for a downhole tool

#90
20170350241
2017-12-07

Data Logger and Charger Thereof

#91
20170343701
2017-11-30

Dark current correction in scintillator detectors for downhole nuclear applications

#92
20170343700
2017-11-30

Formation density tool with a detector operating in total count mode

#93
20170329808
2017-11-16

SYSTEM AND METHOD FOR A MULTI-SENSOR NETWORK INTERFACE FOR REAL-TIME DATA HISTORIAN

#94
20170328151
2017-11-16

Drilling system and method having flow measurement choke

#95
20170292371
2017-10-12

Optical coupling system for downhole rotation variant housing

#96
20170284193
2017-10-05

Collection And Display Of Acoustic Data For Integrated Quality Control

#97
20170268320
2017-09-21

Methods and electrically-actuated apparatus for wellbore operations

#98
20170248015
2017-08-31

Method and apparatus for processing waveforms

#99
20170242142
2017-08-24

Travel-time objective function for full waveform inversion

#100
20170227670
2017-08-10

Dark current correction in scinitillator detectors for downhole nuclear applications

#101
20170145779
2017-05-25

Downhole completion system

#102
20170114629
2017-04-27

Downhole logging communication module

#103
20170108607
2017-04-20

Peak analysis of ultrasonic waveforms for cement bond logging

#104
20170101863
2017-04-13

System and method for downhole and surface measurements for an electric submersible pump

#105
20160340987
2016-11-24

Logging-while-tripping system and methods

#106
20160320769
2016-11-03

METHOD AND DEVICE FOR OBTAINING MEASUREMENTS OF DOWNHOLE PROPERTIES IN A SUBTERRANEAN WELL

#107
20160319659
2016-11-03

Memory balls for capturing fracturing information

#108
20160298448
2016-10-13

NEAR BIT MEASUREMENT MOTOR

#109
20160298429
2016-10-13

Inflow control apparatus, methods, and systems

#110
20160245076
2016-08-25

Downhole Measurement While Drilling Tool with a Spectrometer and Method of Operating Same

#111
20160237813
2016-08-18

Petroleum well downhole logging tool with high speed data bus

#112
20160230536
2016-08-11

Coiled tubing downhole tool

#113
20160222780
2016-08-04

Acoustic signal attenuator for LWD/MWD logging systems

#114
20160168939
2016-06-16

COMBINATION DEBRIS COLLECTION AND VISUAL VALIDATION ASSEMBLY

#115
20160115783
2016-04-28

Data transmission system and method for transmission of downhole measurement-while-drilling data to ground

#116
20160108692
2016-04-21

Downhole tool with retrievable electronics

#117
20160047235
2016-02-18

Method and systems for capturing data for physical states associated with perforating string

#118
20160010447
2016-01-14

Master communication tool for distributed network of wireless communication devices

#119
20160003031
2016-01-07

Intelligent test system and method for multi-segment fractured horizontal well

#120
20150377004
2015-12-31

Closed loop control of drilling toolface

#121
20150361785
2015-12-17

Up hole transmission of well data based on bandwidth

#122
20150354339
2015-12-10

Downhole camera

#123
20150347565
2015-12-03

System and method for storing and retrieving channel data

#124
20150331411
2015-11-19

Automated conflict resolution management

#125
20150330201
2015-11-19

Automated delivery of wellbore construction services

#126
20150308255
2015-10-29

Coiled tubing downhole tool

#127
20150308203
2015-10-29

Mitigating swab and surge piston effects in wellbores

#128
20150285063
2015-10-08

Method of and apparatus for completing a well

#129
20150240632
2015-08-27

Method for surveying drill holes, drilling arrangement, and borehole survey assembly

#130
20150240628
2015-08-27

Well isolation

#131
20150240622
2015-08-27

System and method for analyzing wellbore survey data to determine tortuosity of the wellbore using tortuosity parameter values

#132
20150240620
2015-08-27

System and method for analyzing wellbore survey data to determine tortuosity of the wellbore using displacements of the wellbore path from reference lines

#133
20150226050
2015-08-13

Method and apparatus for communicating incremental depth and/or other useful data of a downhole tool

#134
20150218929
2015-08-06

Well-Logging System With Data Synchronization And Methods

#135
20150211358
2015-07-30

Location of sensors in well formations

#136
20150167457
2015-06-18

Single packers inlet configurations

#137
20150167454
2015-06-18

Probabilistic determination of health prognostics for selection and management of tools in a downhole environment

#138
20150160365
2015-06-11

Full tensor micro-impedance imaging

#139
20150159484
2015-06-11

Downhole fluid analysis methods for determining viscosity

#140
20150159481
2015-06-11

System, apparatus, and method for monitoring a subsea flow device

#141
20150107825
2015-04-23

DOWNHOLE DEVICE FOR DATA ACQUISITION DURING HYDRAULIC FRACTURING OPERATION AND METHOD THEREOF

#142
20150091737
2015-04-02

Remote visual and auditory monitoring system

#143
20150075783
2015-03-19

METHODS AND ELECTRICALLY-ACTUATED APPARATUS FOR WELLBORE OPERATIONS

#144
20150042487
2015-02-12

Latching assembly for wellbore logging tools and method of use

#145
20150012217
2015-01-08

System and methods for measuring borehole caliper in oil-based mud

#146
20140372040
2014-12-18

Adaptive inversion for vertical resistivity logs from multiaxial induction measurements

#147
20140367168
2014-12-18

Modular monitoring assembly

#148
20140340506
2014-11-20

Downhole visualisation method

#149
20140338886
2014-11-20

Smart Drop-off tool and hang-off tool for a logging string

#150
20140333452
2014-11-13

Inter-tool communication flow control in toolbus system of cable telemetry

#151
20140306853
2014-10-16

Antenna for use in a downhole tubular

#152
20140236357
2014-08-21

Cement data telemetry via drill string

#153
20140224481
2014-08-14

Method and device for supplying at least one electrical consumer of a drill pipe with an operating voltage

#154
20140158380
2014-06-12

Pump deployment via cable

#155
20140055279
2014-02-27

Methods and apparatus for transmission of telemetry data

#156
20140008059
2014-01-09

Downhole data communication and logging system

#157
20130319767
2013-12-05

Telemetry operated circulation sub

#158
20130147633
2013-06-13

Modular Data Acquisition for Drilling Operations

#159
20130138254
2013-05-30

Automated controls for pump down operations

#160
20130049982
2013-02-28

System and method for stick-slip correction

#161
20130014934
2013-01-17

Smart drop-off tool and hang-off tool for a logging string

#162
20120133525
2012-05-31

Method and apparatus for subsea wireless communication

#163
20120132418
2012-05-31

Wellbore operations, systems, and methods with McNano devices

#164
20120118564
2012-05-17

Erosion tracer and monitoring system and methodology

#165
20120080184
2012-04-05

Apparatus and method for evaluating a wellbore, in particular a casing thereof

#166
20120046868
2012-02-23

Downhole closed-loop geosteering methodology

#167
20120031672
2012-02-09

Apparatus and methods for real time communication in drill strings

#168
20110240302
2011-10-06

Systems and methods for logging cased wellbores

#169
20110088952
2011-04-21

Drill motor enhancement providing improved sealing performance and longevity

#170
20090205869
2009-08-20

System of monitoring rotational time of rotatable equipment

#171
15600035
2018-10-09

Distributed remote logging

#172
15209493
2017-11-28

Subsurface data transfer using well fluids

#173
14517903
2018-03-13

System and method for installing casing in a blind horizontal well

#174
14477444
2020-03-17

Systems and methods for real-time well surveillance