ClassID:

135730

E21B49/06 - CPC Classification

Classification description:

Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using side-wall drilling tools pressing or scrapers

Recent Application in this class:
#1
20260036046
2026-02-05

CORING TOOLS HAVING CORING SHAFTS WITH ASSOCIATED INTERNAL STATIC SLEEVES

#2
20250383303
2025-12-18

METHOD AND SYSTEMS FOR ALIGNMENT OF ROCK SAMPLES

#3
20250067174
2025-02-27

CORING TOOLS HAVING CORING SHAFTS WITH ASSOCIATED INTERNAL STATIC SLEEVES

#4
20240287900
2024-08-29

SIDEWALL CORING TOOL SYSTEMS AND METHODS

#5
20240175346
2024-05-30

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

#6
20240117735
2024-04-11

ROBOTIC UNTETHERED SIDEWALL CORING TOOLS

#7
20240068364
2024-02-29

SYSTEMS AND METHODS FOR RECOVERING AND PROTECTING SIDEWALL CORE SAMPLES IN UNCONSOLIDATED FORMATIONS

#8
20240053319
2024-02-15

AUTOMATED SOURCE ROCK NET THICKNESS PREDICTION SYSTEM AND METHOD

#9
20240026747
2024-01-25

CORING AND SAMPLING INTEGRATED SUB AND DOWNHOLE INSTRUMENT

#10
20230212944
2023-07-06

Sidewall coring tool systems and methods

#11
20230112374
2023-04-13

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

#12
20230086593
2023-03-23

Method and apparatus for generating artificial permeability during completion phase

#13
20230082833
2023-03-16

System and methods for estimating subsurface horizontal principal stresses in anisotropic formations

#14
20220381675
2022-12-01

DOWNHOLE ROCK MECHANICS CHARACTERISATION TOOL, ASSEMBLY AND METHOD

#15
20220333484
2022-10-20

Downhole robotic arm

#16
20220316290
2022-10-06

Integrated logging instrument for coring and sampling

#17
20220235655
2022-07-28

Apparatus and method for observing performance of a treatment fluid in a core sample

#18
20220120177
2022-04-21

Coring while drilling

#19
20220107279
2022-04-07

Data-driven solutions for inverse elemental modeling

#20
20220074302
2022-03-10

FLUID SATURATED FORMATION CORE SAMPLING TOOL

#21
20220065104
2022-03-03

Coring method and apparatus

#22
20210278563
2021-09-09

Methods and systems for determining reservoir properties from motor data while coring

#23
20210239878
2021-08-05

Borehole coring reconstructions using borehole scans

#24
20210207476
2021-07-08

DOWNHOLE ROBOTIC ARM

#25
20210156249
2021-05-27

Method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall

#26
20210123344
2021-04-29

Core sampling and analysis using a sealed pressurized vessel

#27
20210123313
2021-04-29

Core sampling and analysis using a sealed pressure vessel

#28
20200355763
2020-11-12

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

#29
20200332639
2020-10-22

Method of Drilling Vertical and Horizontal Pathways to Mine for Solid Natural Resources

#30
20200149984
2020-05-14

In-situ stress measurement method

#31
20200149393
2020-05-14

Method of estimating the region of damage due to collapse in the wall of a borehole during the drilling operation

#32
20190339171
2019-11-07

Method for extracting a core from a percussion side wall core bullet for a digital tomographic description and direct numerical simulations

#33
20190249493
2019-08-15

Method of drilling vertical and horizontal pathways to mine for solid natural resources

#34
20190234204
2019-08-01

Estimating properties of a subterranean formation

#35
20190145253
2019-05-16

System and method for using geological analysis for the designing of stimulation operations

#36
20190145252
2019-05-16

Embeddable downhole probe

#37
20180371904
2018-12-27

Fluid saturated formation core sampling tool

#38
20180340417
2018-11-29

System and method for triaxial testing of core samples at high temperatures

#39
20180298709
2018-10-18

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

#40
20180292477
2018-10-11

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

#41
20180259465
2018-09-13

Pressurized NMR core analyzer

#42
20180245415
2018-08-30

System and method for a pressure compensated core

#43
20180216458
2018-08-02

Downhole configurable testing apparatus and methods

#44
20180163535
2018-06-14

Effective porosity determination for tight gas formations

#45
20180163534
2018-06-14

Tight gas formation pressure determination method

#46
20180148988
2018-05-31

Sealed core storage and testing device for a downhole tool

#47
20180058210
2018-03-01

DOWNHOLE ROBOTIC ARM

#48
20180058163
2018-03-01

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

#49
20180051559
2018-02-22

Determining core sample volume within a sealed pressure vessel

#50
20180045008
2018-02-15

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

#51
20170336528
2017-11-23

Measuring total organic carbon of shales using thermal expansion

#52
20170292373
2017-10-12

Method to estimate the influence of pore-size distribution on phase equilibrium of multi-component hydrocarbon systems in unconventional shale gas and oil reservoirs

#53
20170254920
2017-09-07

Chemically-selective imager for imaging fluid of a subsurface formation and method of using same

#54
20170214291
2017-07-27

Sidewall coring structure directly driven by an electric motor

#55
20170159429
2017-06-08

Sidewall core detection

#56
20170107813
2017-04-20

Drilling type sidewall coring apparatus

#57
20170089158
2017-03-30

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

#58
20170008085
2017-01-12

Forming facsimile formation core samples using three-dimensional printing

#59
20170002654
2017-01-05

Coring Apparatus and methods to use the same

#60
20160376861
2016-12-29

Cleaning and separating fluid and debris from core samples and coring systems

#61
20160375486
2016-12-29

Surface coating for metal matrix composites

#62
20160369568
2016-12-22

TWO-PHASE MANUFACTURE OF METAL MATRIX COMPOSITES

#63
20160341036
2016-11-24

Coring tools and related methods

#64
20160273292
2016-09-22

Transverse sidewall coring

#65
20160053564
2016-02-25

Systems and methods for core recovery

#66
20150053481
2015-02-26

Kinetic penetrator with a retrieval tether

#67
20150047909
2015-02-19

WD sidewall coring tool

#68
20150014057
2015-01-15

Mining drill with gradient sensing and method of using same

#69
20140367086
2014-12-18

Apparatus and method for storing core samples at high pressure

#70
20140353479
2014-12-04

Injection for sampling heavy oil

#71
20140291034
2014-10-02

Coring apparatus and methods to use the same

#72
20140209385
2014-07-31

Sealed core

#73
20140208826
2014-07-31

Reservoir sampling tools and methods

#74
20140166367
2014-06-19

Coring bit to whipstock systems and methods

#75
20140138083
2014-05-22

Self-cleaning fluid jet for downhole cutting operations

#76
20140131033
2014-05-15

LWD in-situ sidewall rotary coring and analysis tool

#77
20140102794
2014-04-17

Core orientation systems and methods

#78
20140090893
2014-04-03

Obtaining and evaluating downhole samples with a coring tool

#79
20140076634
2014-03-20

Coring tools and related methods

#80
20130308753
2013-11-21

In-situ downhole X-ray core analysis system

#81
20130277118
2013-10-24

Method for operating a horizontal drilling device and horizontal drilling device

#82
20130233622
2013-09-12

Sealed core

#83
20130213712
2013-08-22

Coring tool and method

#84
20130199851
2013-08-08

Method for producing a horizontal bore in the ground and horizontal drilling device

#85
20130105225
2013-05-02

Horizontal drilling device

#86
20130098604
2013-04-25

Detection and quantification of isolation defects in cement

#87
20130081879
2013-04-04

Downhole coring tools and methods of coring

#88
20130068531
2013-03-21

Large core sidewall coring

#89
20130066605
2013-03-14

Apparatus and method for estimating formation lithology using X-ray flourescence

#90
20130008719
2013-01-10

Coring tools and related methods

#91
20120318579
2012-12-20

Automated sidewall coring

#92
20120210805
2012-08-23

Stack sampling apparatus

#93
20120186809
2012-07-26

Downhole 4D pressure measurement apparatus and method for permeability characterization

#94
20120080229
2012-04-05

Formation sensing and evaluation drill

#95
20120061147
2012-03-15

Coring tool and method

#96
20120000711
2012-01-05

Coring apparatus and methods to use the same

#97
20110284289
2011-11-24

Downhole marking apparatus and methods

#98
20110274429
2011-11-10

Method and apparatus for phase shift keyed optical communications

#99
20110247881
2011-10-13

Intelligent controlled process for well lateral coring

#100
20110242938
2011-10-06

Ultrasonic measurements performed on rock cores

#101
20110240364
2011-10-06

Apparatus and method for acoustic measurements while using a coring tool

#102
20110174543
2011-07-21

DETECTING AND MEASURING A CORING SAMPLE

#103
20110107830
2011-05-12

Apparatus and methods for characterizing a reservoir

#104
20110094801
2011-04-28

Coring apparatus and methods to use the same

#105
20110068787
2011-03-24

Measurements in non-invaded formations

#106
20100282516
2010-11-11

Formation coring apparatus and methods

#107
20100282515
2010-11-11

Sealed core

#108
20100223989
2010-09-09

Obtaining and evaluating downhole samples with a coring tool

#109
20100051347
2010-03-04

In-situ formation strength testing with coring

#110
20090229813
2009-09-17

System for injecting a substance into an annular space

#111
20090139322
2009-06-04

Downhole 4D pressure measurement apparatus and method for permeability characterization

#112
20090133932
2009-05-28

Sidewall coring tool and method for marking a sidewall core

#113
20090133871
2009-05-28

Drilling, perforating and formation analysis

#114
20090114447
2009-05-07

Coring tool and method

#115
20080135299
2008-06-12

Apparatus and method for characterizing a reservoir

#116
20080078582
2008-04-03

Variable positioning deep cutting rotary coring tool with expandable bit

#117
20080078241
2008-04-03

Formation testing and sampling tool including a coring device

#118
20080066534
2008-03-20

Obtaining and evaluating downhole samples with a coring tool

#119
20070215349
2007-09-20

Downhole formation testing tool

#120
20070209797
2007-09-13

System for injecting a substance into an annular space

#121
20070137894
2007-06-21

Method and apparatus for in-situ side-wall core sample analysis

#122
20070045005
2007-03-01

Rotary coring device and method for acquiring a sidewall core from an earth formation

#123
20060131376
2006-06-22

Marking system and method

#124
20060102343
2006-05-18

Drilling, perforating and formation analysis

#125
20060081398
2006-04-20

Apparatus and method for hard rock sidewall coring of a borehole

#126
20060076162
2006-04-13

Self cleaning coring bit

#127
20060054358
2006-03-16

Coring bit with uncoupled sleeve

#128
20060000606
2006-01-05

Apparatus and method for characterizing a reservoir

#129
20050284629
2005-12-29

Downhole formation testing tool

#130
20050194134
2005-09-08

Downhole formation sampling

#131
20050133267
2005-06-23

[CORING TOOL WITH RETENTION DEVICE]

#132
20050133258
2005-06-23

[NANOTUBE ELECTRON EMISSION THERMAL ENERGY TRANSFER DEVICES]

#133
20050103528
2005-05-19

Horizontal directional drilling in wells

#134
20050016727
2005-01-27

Downhole sampling apparatus and method

#135
17647553
2023-05-23

Sidewall experimentation of subterranean formations

#136
13158405
2014-10-21

Lateral drilling tool and method from vertical bore hole