ClassID:

135605

E21B43/112 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Perforators; Permeators Perforators with extendable perforating members, e.g. actuated by fluid means

Recent Application in this class:
#1
20250347193
2025-11-13

DOWNHOLE TOOL

#2
20250320794
2025-10-16

Electro-Hydraulic Tubing Punch

#3
20250250887
2025-08-07

DOWNHOLE TOOL

#4
20250170542
2025-05-29

SYSTEMS AND METHODS FOR USING EXTERNAL AND INTERNAL REACTORS TO PRODUCE AND USE A CUSTOM TREATMENT FLUID TO CHANGE THE INTERNAL CONDITIONS OF PILES

#5
20240418059
2024-12-19

Downhole tool and method for perforating a downhole tubular

#6
20240384603
2024-11-21

Wellbore Notching Assembly

#7
20240076950
2024-03-07

PUNCH AND INJECT TOOL FOR DOWNHOLE CASING AND METHOD FOR USE THEREOF

#8
20240035354
2024-02-01

ANNULUS REMEDIATION SYSTEM AND METHOD

#9
20240011372
2024-01-11

Downhole tool

#10
20230258053
2023-08-17

Intelligent detect, punch, isolate, and squeeze system

#11
20230175359
2023-06-08

Perforation cluster layout design and its relative orientation in the subsurface for a hydraulic fracturing treatment

#12
20230086593
2023-03-23

Method and apparatus for generating artificial permeability during completion phase

#13
20220389796
2022-12-08

Downhole cutting tool

#14
20220333466
2022-10-20

Procedures for selective water shut off of passive ICD compartments

#15
20220298886
2022-09-22

Punch and inject tool for downhole casing and method for use thereof

#16
20220259953
2022-08-18

Well Casing Perforator Tool

#17
20220251933
2022-08-11

Method for treating intervals of a producing formation

#18
20220213766
2022-07-07

Non-explosive casing perforating devices and methods

#19
20210404267
2021-12-30

Method for separating nested well tubulars in gravity contact with each other

#20
20210262324
2021-08-26

Well perforating using electrical discharge machining

#21
20210230983
2021-07-29

Punch mechanism

#22
20210079765
2021-03-18

Systems and methods for opening screen joints

#23
20210047893
2021-02-18

Hydraulic pressure converter with modular force multiplier for downhole tools

#24
20200386085
2020-12-10

Oriented detection perforating device

#25
20200378212
2020-12-03

Improvements In Or Relating To Well Abandonment and Slot Recovery

#26
20200291736
2020-09-17

Reusable field-attachable wellhead penetrator and method of assembly and use

#27
20200284125
2020-09-10

Perforating device

#28
20200232299
2020-07-23

Cement squeeze well tool

#29
20200190951
2020-06-18

System and method for mechanical tubing puncher

#30
20200157904
2020-05-21

AUTOMATIC DRILLER

#31
20200115997
2020-04-16

Apparatus and method for abrasive perforating and clean-out

#32
20200109613
2020-04-09

Mechanical perforator

#33
20190368292
2019-12-05

Cement squeeze well tool

#34
20190257177
2019-08-22

Systems and methods for opening screen joints

#35
20190120004
2019-04-25

Borehole Alteration of Tubular String to Create and Close Off Openings

#36
20190071955
2019-03-07

Extendable perforation in cased hole completion

#37
20190024469
2019-01-24

FLEXIBLE DISPLAY APPARATUS AND AN ENCAPSULATION METHOD THEREOF

#38
20180320489
2018-11-08

Installation apparatus and method

#39
20180179877
2018-06-28

Method of increasing productivity of oil and gas recovery from previously used wells

#40
20180171764
2018-06-21

Pyrotechnic initiated hydrostatic/boost assisted down-hole activation device and method

#41
20180119528
2018-05-03

Downhole perforating tools and methods

#42
20180016884
2018-01-18

Method of increasing productivity of oil and gas recovery from previously used wells

#43
20180003038
2018-01-04

System and method for detection of actuator launch in wellbore operations

#44
20180003001
2018-01-04

Downhole cutting and sealing apparatus

#45
20170350193
2017-12-07

Downhole operational tool

#46
20170234115
2017-08-17

Well tool modules for radial drilling and anchoring

#47
20170037698
2017-02-09

Packer apparatus and method of sealing well casing

#48
20170030157
2017-02-02

Multifunction wellbore tubular penetration tool

#49
20160305226
2016-10-20

Multi-perforating tool

#50
20160258257
2016-09-08

Downhole mechanical tubing perforator

#51
20160245031
2016-08-25

Wellbore tubing cutting tool

#52
20160237793
2016-08-18

Hydraulic tubing perforator

#53
20160215596
2016-07-28

Apparatus and method for perforating a subterranean formation

#54
20160177647
2016-06-23

Downhole slot cutter

#55
20150343538
2015-12-03

Drilling apparatus

#56
20150300135
2015-10-22

Reduced outer diameter expandable perforator

#57
20150292306
2015-10-15

Venting system for a shaped charge in the event of deflagration

#58
20150267513
2015-09-24

Downhole perforating tool and method of use

#59
20150260020
2015-09-17

Well casing perforator and apparatus

#60
20150233217
2015-08-20

Combined perforating and fracking tool

#61
20150226032
2015-08-13

Combined perforating and fracking tools

#62
20150090454
2015-04-02

Hydromecanical piercing perforator and method of operation thereof

#63
20150090449
2015-04-02

Cement masking system and method thereof

#64
20150090448
2015-04-02

Downhole system having compressable and expandable member to cover port and method of displacing cement using member

#65
20150041137
2015-02-12

Automatic driller

#66
20150027709
2015-01-29

Non-ballistic tubular perforating system and method

#67
20150021029
2015-01-22

Method and apparatus for casing entry

#68
20140311729
2014-10-23

Hydromechanical slot perforator (variants)

#69
20140182853
2014-07-03

Downhole slot cutter

#70
20140096970
2014-04-10

Multi-zone fracturing and sand control completion system and method thereof

#71
20140083674
2014-03-27

Cutting unit of a slot perforator (variants)

#72
20140069647
2014-03-13

Cased hole chemical perforator

#73
20140060838
2014-03-06

Downhole Robotic Micro-Drilling System

#74
20140027117
2014-01-30

System and method of cutting and removing casings from wellbore

#75
20130319651
2013-12-05

Cutting unit of a hydromecanical slot perforator

#76
20130312949
2013-11-28

Cutting unit of a hydromechanical slot perforator

#77
20130233555
2013-09-12

Downhole punch component

#78
20130192815
2013-08-01

Device for drilling through a formation

#79
20130175035
2013-07-11

Packer apparatus

#80
20130056277
2013-03-07

Method and Device for Producing an Opening from a Motherbore and into a Formation

#81
20130048306
2013-02-28

APPARATUS AND METHOD FOR PENETRATING CEMENT SURROUNDING A TUBULAR

#82
20120298361
2012-11-29

Select fire stackable gun system

#83
20120279710
2012-11-08

Injection drill bit

#84
20120273238
2012-11-01

Jacking units and bellows for down hole intervention tools

#85
20120118573
2012-05-17

Fracturing with telescoping members and sealing the annular space

#86
20120118562
2012-05-17

SYSTEM, APPARATUS AND METHOD FOR ABRASIVE JET FLUID CUTTING

#87
20110308803
2011-12-22

Fracturing method to reduce tortuosity

#88
20110297371
2011-12-08

DOWNHOLE MARKERS

#89
20110240294
2011-10-06

PIPE PERFORATING APPARATUS AND METHOD

#90
20110198094
2011-08-18

Method for extracting landfill gas

#91
20110132612
2011-06-09

Telescopic unit with dissolvable barrier

#92
20110061874
2011-03-17

Tool for enhancing the extraction of landfill gas

#93
20110005759
2011-01-13

FRACTURING SYSTEM AND METHOD

#94
20100282469
2010-11-11

Fracturing with telescoping members and sealing the annular space

#95
20100230100
2010-09-16

Plug for a Perforated Liner and Method of Using Same

#96
20100078171
2010-04-01

Method and apparatus for sealing a hole made with a cased hole formation tester

#97
20100078170
2010-04-01

Method and apparatus for forming and sealing a hole in a sidewall of a borehole

#98
20100012312
2010-01-21

Through tubing perforating gun

#99
20090301720
2009-12-10

REMOTE PLUGGING DEVICE FOR WELLS

#100
20090229813
2009-09-17

System for injecting a substance into an annular space

#101
20090211745
2009-08-27

Non-explosive tubing perforator and method of perforating

#102
20090194277
2009-08-06

Single trip tubing punch and setting tool

#103
20090071640
2009-03-19

Device for cutting a vertical slot-like unloading opening

#104
20080179061
2008-07-31

SYSTEM, APPARATUS AND METHOD FOR ABRASIVE JET FLUID CUTTING

#105
20080178721
2008-07-31

Production casing ripper

#106
20080135299
2008-06-12

Apparatus and method for characterizing a reservoir

#107
20080115940
2008-05-22

Apparatus, system, and method for casing hole formation in radial drilling operations

#108
20070277980
2007-12-06

Downhole perforator assembly and method for use of same

#109
20070209797
2007-09-13

System for injecting a substance into an annular space

#110
20070151766
2007-07-05

Mechanical and fluid jet horizontal drilling method and apparatus

#111
20060131020
2006-06-22

Perforating tubulars

#112
20060000606
2006-01-05

Apparatus and method for characterizing a reservoir

#113
18643802
2025-08-26

Telescoping laser system for subsurface perforation

#114
18410870
2025-01-28

Fiber-safe single-run perforating gun

#115
18059328
2023-12-26

Venting systems for pipeline liners

#116
17819896
2023-10-24

Cased perforation tools

#117
17545359
2025-11-04

System, apparatus, and method for louver perforation