Patents-Review.com
ClassID:

135415 ⎘

E21B25/00 - CPC Classification

Classification description:

Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors

Sub-classes:
Recent Application in this class:
#1
20260125954
2026-05-07

SYSTEM AND METHOD OF MANUALLY OPERATED DRILLING ON AN EXTRATERRESTRIAL SURFACE

 #2
20260117648
2026-04-30

DEVICES, SYSTEMS, AND METHODS FOR WIRELESS DATA ACQUISITION DURING DRILLING OPERATIONS

 #3
20250270921
2025-08-28

METHOD AND SYSTEM FOR DETERMINING WELLBORE BREAKDOWN PRESSURES FOR HYDRAULIC STIMULATION OPERATIONS

 #4
20250250881
2025-08-07

DRILLING HEAD ASSEMBLY WITH LATCHING SYSTEM AND FLUID RETENTION MECHANISM

 #5
20250076272
2025-03-06

SYSTEM AND METHOD TO ACCELERATE CORE IMAGES ACQUISITION AND PROCESSING USING MACHINE LEARNING

 #6
20250067717
2025-02-27

METHOD TO DESIGN SALT CAVERN FOR CYCLICAL WITHDRAWAL OF GAS

 #7
20250044473
2025-02-06

METHOD OF IDENTIFYING A PRODUCTIVE INTERVAL ALONG A WELL

 #8
20250037413
2025-01-30

METHOD FOR DETERMINING ICHNOLOGICAL SUBSURFACE GEOLOGIC FORMATION

 #9
20250028072
2025-01-23

Identifying Unconformities in Subsurface Formations

 #10
20250020035
2025-01-16

Golf Hole Cutter

 #11
20240393223
2024-11-28

SYSTEMS AND METHODS TO DETERMINE PERMEABILITY OF ROCK UNDER ANISOTROPIC STRESS

 #12
20240352851
2024-10-24

Devices, Systems, And Methods For Wireless Data Acquisition During Drilling Operations

 #13
20240261911
2024-08-08

Assembly method for deep in-situ high-fidelity coring calibration platform

 #14
20240053319
2024-02-15

AUTOMATED SOURCE ROCK NET THICKNESS PREDICTION SYSTEM AND METHOD

 #15
20230313626
2023-10-05

DIRECTIONAL CORE DRILLING SYSTEM

 #16
20230206590
2023-06-29

Automated bioturbation image classification using deep learning

 #17
20230194388
2023-06-22

Core detection device of coring instrument and spacer insertion device

 #18
20230167701
2023-06-01

Method and apparatus to recover cores from downhole environments

 #19
20230167700
2023-06-01

Four-Hole Core Drilling Machine

 #20
20230112374
2023-04-13

Downhole rotary core analysis using imaging, pulse neutron, and nuclear magnetic resonance

 #21
20230086593
2023-03-23

Method and apparatus for generating artificial permeability during completion phase

 #22
20230033707
2023-02-02

Devices, systems, and methods for wireless data acquisition during drilling operations

 #23
20220412176
2022-12-29

IMPROVEMENT RELATING TO DRILL RODS

 #24
20220390638
2022-12-08

Estimation of mechanical properties of transversely isotropic media

 #25
20220389808
2022-12-08

A MEASUREMENT DEVICE

 #26
20220381675
2022-12-01

DOWNHOLE ROCK MECHANICS CHARACTERISATION TOOL, ASSEMBLY AND METHOD

 #27
20220364467
2022-11-17

Low-power microwave coring machine suitable for lunar rocks and method of using the same

 #28
20220349271
2022-11-03

Method and apparatus to recover cores from downhole environments

 #29
20220252757
2022-08-11

Multiple porosity micromodel

 #30
20220213746
2022-07-07

Coring drill tool driving structure

 #31
20220213745
2022-07-07

Driving system for core drilling rig

 #32
20220205326
2022-06-30

System and method of obtaining formation samples using coiled tubing

 #33
20220145724
2022-05-12

Check valve, associated downhole data collection system and inner core

 #34
20220120177
2022-04-21

Coring while drilling

 #35
20220049563
2022-02-17

Hydraulic propulsion horizontal directional coring device

 #36
20220042386
2022-02-10

Moon-based in-situ condition-preserved coring multi-stage large-depth drilling system and method therefor

 #37
20220042376
2022-02-10

Pressured horizontal directional drilling continuous coring device for engineering geological investigation

 #38
20220018192
2022-01-20

Fast drop inner tube head assembly and system

 #39
20220010622
2022-01-13

Horizontal drilling machine with impact device

 #40
20210389499
2021-12-16

Method and system of fracability measurement based on core fracture density

 #41
20210372201
2021-12-02

Excavation apparatus with supporting linkage

 #42
20210285850
2021-09-16

Device, system and method for correlating core sample zones with actual subterranean depth

 #43
20210285849
2021-09-16

Core detection device of coring instrument

 #44
20210270130
2021-09-02

Method and system for diagenesis-based rock classification

 #45
20210246747
2021-08-12

METHOD AND APPARATUS TO RECOVER CORES FROM DOWNHOLE ENVIRONMENTS

 #46
20210222516
2021-07-22

Subterranean coring assemblies

 #47
20210079780
2021-03-18

Devices, systems, and methods for wireless data acquisition during drilling operations

 #48
20200408043
2020-12-31

Core Barrel Stabilizer

 #49
20200355763
2020-11-12

Analyzing fluids in core samples contained in pressurized NMR core holders with 1H and 19F NMR

 #50
20200284146
2020-09-10

Cutting tool with porous regions

 #51
20200240242
2020-07-30

Check valve, associated downhole data collection system and inner core

 #52
20200217162
2020-07-09

Overshot assembly and systems and methods of using same

 #53
20200181999
2020-06-11

Deep rock in-situ active thermal-insulation coring device and thermal-insulation coring method thereof

 #54
20200056966
2020-02-20

Device, system and method for correlating core sample zones with actual subterranean depth

 #55
20200051330
2020-02-13

Cored rock analysis planning through CT images

 #56
20200051329
2020-02-13

Cored rock analysis planning through CT images

 #57
20200003749
2020-01-02

Multiple function dual core flooding apparatus and methods

 #58
20190338609
2019-11-07

Coring apparatus

 #59
20190284891
2019-09-19

Inner barrel assembly for recovery of reservoir fluids from a core sample

 #60
20190264521
2019-08-29

Inner barrel shear zone for a coring tool

 #61
20190257162
2019-08-22

Mitigating drilling circulation loss

 #62
20190226338
2019-07-25

Drilling apparatus and method for collecting research sample

 #63
20190211637
2019-07-11

Measuring formation porosity and permeability

 #64
20190195061
2019-06-27

Image based rock property tensor visualization of a geocellular grid in a dynamic 3D environment

 #65
20190128094
2019-05-02

Fluid placement tool

 #66
20190107520
2019-04-11

System and method for analyzing drill core samples

 #67
20190063157
2019-02-28

Downhole drilling tool system of torque self-balancing

 #68
20180340381
2018-11-29

Mitigating drilling circulation loss

 #69
20180328161
2018-11-15

Braking devices for drilling operations, and systems and methods of using same

 #70
20180323589
2018-11-08

Wire follow-up protection structure of electric reducer

 #71
20180292477
2018-10-11

Analyzing fluids in core samples contained in pressurized NMR core holders with 1H and 19F NMR

 #72
20180259465
2018-09-13

Pressurized NMR core analyzer

 #73
20180252071
2018-09-06

Check valve, associated downhole data collection system and inner core barrel assembly

 #74
20180245462
2018-08-30

Borehole logging methods and apparatus

 #75
20180225868
2018-08-09

Method and system for generating a virtual core

 #76
20180161950
2018-06-14

Active water cooling of gear mechanisms by means of a geometrically specially formed insert in diamond drilling devices

 #77
20180113086
2018-04-26

Identification, quantification and prediction of free silicon in geological formation and its contribution to rock properties

 #78
20180112482
2018-04-26

Coring tools including core sample flap catcher and related methods

 #79
20180100390
2018-04-12

GEOLOGICAL ASSET UNCERTAINTY REDUCTION

 #80
20180087338
2018-03-29

Core saw and support frame structure

 #81
20180058212
2018-03-01

Determining the imminent rock failure state for improving multi-stage triaxial compression tests

 #82
20180045704
2018-02-15

Multiple function dual core flooding apparatus and methods

 #83
20180039900
2018-02-08

Estimation of optimum tripping schedules

 #84
20180038165
2018-02-08

Core drill apparatus for installation in excavator

 #85
20180018817
2018-01-18

Cored rock analysis planning through CT images

 #86
20180010391
2018-01-11

Vibratory apparatus for drilling apparatus

 #87
20180003000
2018-01-04

FLUID CONTROL ASSEMBLIES, AND CORE BARREL AND OVERSHOT ASSEMBLIES COMPRISING SAME

 #88
20170342790
2017-11-30

Activation modules for obstructing entrances to inner barrels of coring tools and related coring tools and methods

 #89
20170336528
2017-11-23

Measuring total organic carbon of shales using thermal expansion

 #90
20170306712
2017-10-26

Core jam indicator for coring tools and coring tools including such core jam indicators

 #91
20170284160
2017-10-05

Core lifter

 #92
20170167214
2017-06-15

Coring tools with improved reliability during core jams, and related methods

 #93
20170152720
2017-06-01

Mechanical force generator

 #94
20170145759
2017-05-25

Length-adjustable connector for a downhole tool

 #95
20170131192
2017-05-11

DETERMINING THE IMMINENT ROCK FAILURE STATE FOR IMPROVING MULTI-STAGE TRIAXIAL COMPRESSION TESTS

 #96
20170051571
2017-02-23

Overshot assembly and systems and methods of using same

 #97
20170008085
2017-01-12

Forming facsimile formation core samples using three-dimensional printing

 #98
20170004650
2017-01-05

Cored rock analysis planning through CT images

 #99
20160341036
2016-11-24

Coring tools and related methods

 #100
20160332329
2016-11-17

System and method for generating formation cores with realistic geological composition and geometry

 #101
20160306074
2016-10-20

Tuning digital core analysis to laboratory results

 #102
20160305237
2016-10-20

METHOD AND SYSTEM OF SHOWING HETEROGENEITY OF A POROUS SAMPLE

 #103
20160299050
2016-10-13

Measuring formation porosity and permeability

 #104
20160273352
2016-09-22

Borehole logging methods and apparatus

 #105
20160230511
2016-08-11

Method for determining triaxial conductivity with arbitrary orientation using multiaxial electromagnetic measurements

 #106
20160187532
2016-06-30

Methods for determining a saturation-height function in oil and gas reservoirs

 #107
20160138392
2016-05-19

Bitumen quantification using vibrational spectroscopy

 #108
20160102513
2016-04-14

Extendable pilot for barrel cutter

 #109
20160060986
2016-03-03

Activation modules for obstructing entrances to inner barrels of coring tools and related coring tools and methods

 #110
20160059987
2016-03-03

Core tray

 #111
20160053564
2016-02-25

Systems and methods for core recovery

 #112
20160047182
2016-02-18

Drilling head driving device, tube forming mechanism and drilling method

 #113
20150361740
2015-12-17

Method of filling a coring tool inner barrel with a coring fluid

 #114
20150345256
2015-12-03

Downhole actuation apparatus and associated methods

 #115
20150322722
2015-11-12

Coring tools and related methods

 #116
20150300117
2015-10-22

Seated hammer apparatus for core sampling

 #117
20150285020
2015-10-08

Coring system and method

 #118
20150279093
2015-10-01

360-degree core photo image integration and interpretation in a 3D petrophysical modeling environment

 #119
20150275604
2015-10-01

Frangible core barrel

 #120
20150268314
2015-09-24

Core sample holder

 #121
20150233201
2015-08-20

Coring tools with improved reliability during core jams, and related methods

 #122
20150226016
2015-08-13

Core barrel and related drilling apparatus and method

 #123
20150176355
2015-06-25

Adjustable coring assembly and method of using same

 #124
20150136486
2015-05-21

Coring system considering tilting of coring part and method of compensating depth of coring part using the same

 #125
20150114723
2015-04-30

Diamond core drill wire line latch assembly

 #126
20150068812
2015-03-12

Coring tools including core sample flap catcher and related methods

 #127
20150060142
2015-03-05

Mechanical core jam indicator for coring tools, coring tools including such core jam indicators, and related methods

 #128
20150021097
2015-01-22

Pressure compensation modules for coring tools, coring tools including pressure compensation modules, and related methods

 #129
20140367086
2014-12-18

Apparatus and method for storing core samples at high pressure

 #130
20140345945
2014-11-27

Estimation of optimum tripping schedules

 #131
20140328454
2014-11-06

System and method for determining an orientation of reservoir geobodies from unoriented conventional cores

 #132
20140311805
2014-10-23

Methods and apparatus for coring

 #133
20140262532
2014-09-18

Core sampling apparatus and container transfer apparatus

 #134
20140166367
2014-06-19

Coring bit to whipstock systems and methods

 #135
20140112841
2014-04-24

Device and method for removing a supernatant of a liquid sample, and use of a valve device having a soluble membrane

 #136
20140076634
2014-03-20

Coring tools and related methods

 #137
20130327518
2013-12-12

Improvements relating to core barrel outer tubes

 #138
20130319763
2013-12-05

Soil sampler

 #139
20130213712
2013-08-22

Coring tool and method

 #140
20130199847
2013-08-08

Instrumented core barrel apparatus and associated methods

 #141
20130146365
2013-06-13

Quickly reconfigurable core barrel head assembly

 #142
20130113488
2013-05-09

Apparatus and methods for monitoring a core during coring operations

 #143
20130081877
2013-04-04

Extendable pilot bit for barrel cutter

 #144
20130056276
2013-03-07

System and method for conducting drilling and coring operations

 #145
20130008719
2013-01-10

Coring tools and related methods

 #146
20120273279
2012-11-01

Core Barrel and Related Drilling Apparatus and Method

 #147
20120261191
2012-10-18

Determining methane content of a bottom sample

 #148
20120261189
2012-10-18

UNDISTURBED CORE SAMPLER

 #149
20120261113
2012-10-18

Cobble/small boulder debris device in borehole excavating

 #150
20120145461
2012-06-14

Coring apparatus with sensors

 #151
20120145457
2012-06-14

System for monitoring coring operations

 #152
20120061147
2012-03-15

Coring tool and method

 #153
20120037427
2012-02-16

Drilling system for enhanced coring and method

 #154
20120037390
2012-02-16

Free-mass and interface configurations of hammering mechanisms

 #155
20120012393
2012-01-19

Small core generation and analysis at-bit as LWD tool

 #156
20120012392
2012-01-19

Small core generation and analysis at-bit as LWD tool

 #157
20110315451
2011-12-29

DRIVE SYSTEM FOR A DOWNHOLE TOOL

 #158
20110253452
2011-10-20

Coring apparatus and methods

 #159
20110247881
2011-10-13

Intelligent controlled process for well lateral coring

 #160
20110247879
2011-10-13

Apparatus and methods for detecting gases during coring operations

 #161
20110198124
2011-08-18

Substantially simultaneous core containment, core retrieval and borehole abatement

 #162
20110100718
2011-05-05

Core lifter

 #163
20110083905
2011-04-14

Coring apparatus with sensors

 #164
20110056713
2011-03-10

Single piezo-actuator rotary-hammering (SPaRH) drill

 #165
20100161229
2010-06-24

Apparatus and methods for gas volume retained coring

 #166
20100126777
2010-05-27

Drilling System with a Barrel Drilling Head Driven by a Downhole Tractor

 #167
20100101863
2010-04-29

Sonic drill rod with external surface features

 #168
20100084193
2010-04-08

Air hammer coring apparatus and method

 #169
20100000108
2010-01-07

CORE BARREL CAPACITY GAUGE

 #170
20090283327
2009-11-19

Jointed spearhead assembly

 #171
20090178847
2009-07-16

Method and Device for Subsea Wire Line Drilling

 #172
20090173542
2009-07-09

Vibratory unit for drilling systems

 #173
20090166088
2009-07-02

Subsurface formation core acquisition system using high speed data and control telemetry

 #174
20090159335
2009-06-25

Monitoring apparatus for core barrel operations

 #175
20090114447
2009-05-07

Coring tool and method

 #176
20090114008
2009-05-07

Method and apparatus

 #177
20080156537
2008-07-03

Core barrel capacity gauge and method

 #178
20080083645
2008-04-10

Container and method

 #179
20070261886
2007-11-15

CORE DRILL ASSEMBLY WITH ADJUSTABLE TOTAL FLOW AREA AND RESTRICTED FLOW BETWEEN OUTER AND INNER BARREL ASSEMBLIES

 #180
20070214878
2007-09-20

Use of deuterium oxide-depleted water as a tracer in downhole and core analysis applications

 #181
20070061079
2007-03-15

Digital core workflow method using digital core image

 #182
20060237232
2006-10-26

Sealed core sample barrel

 #183
20060157246
2006-07-20

Window reaming and coring apparatus and method of use

 #184
20050126824
2005-06-16

Soil sampling system and method that allow headspace screening at spaced intervals without disturbing soil sample

 #185
20050072598
2005-04-07

Method and device for deviated coring and/or drilling

 #186
20050005694
2005-01-13

Use of cesium as a tracer in coring operations

 #187
17384866
2023-10-10

Soil sampling assembly

 #188
16207760
2021-07-27

Soil sampling assembly

 #189
15395691
2018-12-04

Soil sampling assembly

 #190
15202694
2018-06-12

Low-frequency pulsing sonic and hydraulic mining system

 #191
14486058
2017-01-03

Soil sampling assembly

 #192
14208939
2017-01-24

Split tube soil sampling system