ClassID:

135557

E21B37/08 - CPC Classification

Classification description:

Methods or apparatus for cleaning boreholes or wells cleaning of down-hole filters, screens, e.g. casing perforations, or gravel packs

Recent Application in this class:
#1
20250223887
2025-07-10

DEVICES, SYSTEMS, AND METHODS FOR A CLEANING ELEMENT

#2
20250163778
2025-05-22

IMPLOSION DEVICE

#3
20250092770
2025-03-20

PUMP CONTROL FRAMEWORK

#4
20250092762
2025-03-20

BEHIND CASING WASH AND CEMENT

#5
20240309730
2024-09-19

DEBRIS REMOVAL APPARATUS WITH SELF CLEANING FILTER ASSEMBLY, WELL SYSTEM AND METHOD OF USE

#6
20240301770
2024-09-12

DOWNHOLE SUCTION TOOL

#7
20240084653
2024-03-14

Drilling system with annular flush separation device and method

#8
20240076958
2024-03-07

DOWNHOLE PRESSURE WAVE GENERATING DEVICE

#9
20240044224
2024-02-08

Downhole clean out tool

#10
20230417115
2023-12-28

Resettable telescoping plug retrieving tool

#11
20230399922
2023-12-14

Junk crushing device, assembly, and method thereof

#12
20230392476
2023-12-07

PULSE BASED PERF AND WASH SYSTEM AND METHOD

#13
20230358117
2023-11-09

System for preventative water well maintenance

#14
20230228173
2023-07-20

Behind casing wash and cement

#15
20230088389
2023-03-23

Wash tool

#16
20220412191
2022-12-29

Downhole pressure wave generating device

#17
20220325611
2022-10-13

Tool deployment and cleanout system

#18
20220298889
2022-09-22

Wellbore milling and cleanout system and methods of use

#19
20220243117
2022-08-04

Viscoelastic-surfactant treatment fluids having oxidizer

#20
20220145728
2022-05-12

Debris removal apparatus with self cleaning filter assembly, well system, and method of use

#21
20220049581
2022-02-17

One-trip screen installation and cleaning system

#22
20220049565
2022-02-17

Acid wash system for wireline and slickline

#23
20210396098
2021-12-23

Injectivity and production improvement in oil and gas fields

#24
20210372266
2021-12-02

Gravel pack quality measurement

#25
20210348482
2021-11-11

Resource collection system

#26
20210348480
2021-11-11

Pulse based perf and wash system and method

#27
20210340426
2021-11-04

Temporary blockage of fluid boundary between higher and lower fluid conductivity formations

#28
20210222048
2021-07-22

Crosslinked synthetic polymer-based reservoir drilling fluid

#29
20210198553
2021-07-01

Viscoelastic-surfactant treatment fluids having oxidizer

#30
20210156230
2021-05-27

SYSTEMS AND METHODS FOR MANAGING DEBRIS IN A WELL

#31
20210156229
2021-05-27

Pressure retention manifold for sand control screens

#32
20210155842
2021-05-27

Rare earth oxide as a weighting and bridging agent

#33
20210079760
2021-03-18

Method of water well rehabilitation

#34
20210071502
2021-03-11

Downhole pressure wave generating device

#35
20210039143
2021-02-11

Acoustic emitter device for regular cleaning of a downhole filter

#36
20200332170
2020-10-22

Methods of suspending weighting agents in a drilling fluid

#37
20200325754
2020-10-15

High power laser flow assurance systems, tools and methods

#38
20200165908
2020-05-28

Downhole sand screen with automatic flushing system

#39
20200056456
2020-02-20

Method of preventative water well maintenance

#40
20200056448
2020-02-20

System for stimulating a well

#41
20200003023
2020-01-02

Snorkel tube with debris barrier for electronic gauges placed on sand screens

#42
20190383120
2019-12-19

HIGH POWER LASER FLOW ASSURANCE SYSTEMS, TOOLS AND METHODS

#43
20190292875
2019-09-26

Method and system for plugging a subterranean well

#44
20190277113
2019-09-12

METHOD FOR LAUNCHING A CLEANING ELEMENT

#45
20190226301
2019-07-25

Reverse circulation debris removal tool for setting isolation seal assembly

#46
20190203567
2019-07-04

Method to manipulate a well using an underbalanced pressure container

#47
20190144736
2019-05-16

Breaker fluids and methods of use thereof

#48
20190120019
2019-04-25

Systems and methods for managing debris in a well

#49
20190063189
2019-02-28

APPARATUS, SYSTEM AND METHOD FOR DEBRIS REMOVAL

#50
20190063171
2019-02-28

Hydraulic fraction down-hole system with circulation port and jet pump for removal of residual fracking fluid

#51
20190040858
2019-02-07

Submersible pumping apparatus, comprising linear electric motor and double action pump

#52
20190024480
2019-01-24

Fluid discharge apparatus and method of use

#53
20190017351
2019-01-17

Self-cleaning sand screen

#54
20190010385
2019-01-10

Compositions and methods for controlling strong acid systems

#55
20180251386
2018-09-06

Subsea equipment cleaning system and method

#56
20180195368
2018-07-12

Well stimulation and cleaning tool

#57
20180187518
2018-07-05

A Method of Plugging and Abandoning a Well

#58
20180169674
2018-06-21

VORTEX-GENERATING WASH NOZZLE ASSEMBLIES

#59
20180163510
2018-06-14

System for stimulating a well

#60
20180016872
2018-01-18

Systems and methods for managing debris in a well

#61
20180003011
2018-01-04

Louvered Pipe Shroud Assembly

#62
20170275959
2017-09-28

Drilling debris separator

#63
20170226825
2017-08-10

SUBMERSIBLE PUMP SYSTEMS AND METHODS OF USE

#64
20170204696
2017-07-20

Snorkel tube with debris barrier for electronic gauges placed on sand screens

#65
20170199296
2017-07-13

Methods of logging

#66
20170198550
2017-07-13

INJECTOR FILL DISPLACEMENT TUBES

#67
20170198192
2017-07-13

Breaker fluids and methods of use thereof

#68
20170198189
2017-07-13

Crosslinked synthetic polymer-based reservoir drilling fluid

#69
20170002627
2017-01-05

FLUIDIC OSCILLATOR BYPASS SYSTEM

#70
20160376491
2016-12-29

Filter cake removal composition for drilling fluids and method of use thereof

#71
20160305220
2016-10-20

Method for launching a cleaning element

#72
20160265312
2016-09-15

Using dynamic underbalance to increase well productivity

#73
20160251940
2016-09-01

High power laser flow assurance systems, tools and methods

#74
20160201430
2016-07-14

Method for isolation of a permeable zone in a subterranean well

#75
20160194937
2016-07-07

Method for establishment of a new well path from an existing well

#76
20160194934
2016-07-07

One-trip method of plugging a borehole for well abandonment

#77
20160160610
2016-06-09

Removing cured resins from subterranean formations and completions

#78
20160084057
2016-03-24

CONCENTRIC COIL TUBING DEPLOYMENT FOR HYDRAULIC FRACTURE APPLICATION

#79
20160024888
2016-01-28

Method and device for cleaning control particles in a wellbore

#80
20160017998
2016-01-21

Self cleaning pistons

#81
20150369012
2015-12-24

Apparatus and methodology for continuous down hole sand screen fill removal

#82
20150361773
2015-12-17

Flow control devices including materials containing hydrophilic surfaces and related methods

#83
20150252655
2015-09-10

Crimped nozzle for alternate path well screen

#84
20150075799
2015-03-19

Downhole debris retriever

#85
20150053405
2015-02-26

One trip perforating and washing tool for plugging and abandoning wells

#86
20150021034
2015-01-22

Switchable magnetic particle filter

#87
20150021025
2015-01-22

Method for combined cleaning and plugging in a well and flushing tool for flushing in a well

#88
20150007991
2015-01-08

Method of providing mechanical stability around an entrance of a new well path to be formed from an existing well

#89
20140367084
2014-12-18

Snorkel tube with debris barrier for electronic gauges placed on sand screens

#90
20140360725
2014-12-11

Junk basket with self clean assembly and methods of using same

#91
20140238123
2014-08-28

Snorkel tube with debris barrier for electronic gauges placed on sand screens

#92
20140231546
2014-08-21

Development and rehabilitation of wells and springs by a rotary nozzle device with angle adjustable nozzles

#93
20140209295
2014-07-31

Downhole pressure nozzle and washing nozzle

#94
20140182699
2014-07-03

Flushing tool and method of flushing perforated tubing

#95
20130284421
2013-10-31

Sand control device cleaning system

#96
20130233533
2013-09-12

Deep-well pump system

#97
20130146289
2013-06-13

TWO-STAGE FILTER CAKE REMOVAL COMPOSITION FOR DRILLING FLUIDS AND METHOD OF USE THEREOF

#98
20130000923
2013-01-03

Downhole Circulation Apparatus

#99
20120312539
2012-12-13

Apparatus and method for water well cleaning

#100
20120241220
2012-09-27

Dendritic Surfactants and Extended Surfactants for Drilling Fluid Formulations

#101
20120205097
2012-08-16

Method of Enhance the Production Capacity of an Oil Well

#102
20120160524
2012-06-28

COMPLETION ASSEMBLY AND A METHOD FOR STIMULATING, SEGMENTING AND CONTROLLING ERD WELLS

#103
20120097387
2012-04-26

Apparatus for activating or cleaning filter tube wells

#104
20120067588
2012-03-22

Flow control apparatus

#105
20120018163
2012-01-26

Water well cleaning apparatus and method

#106
20110253375
2011-10-20

Apparatus and methods for removing mercury from formation effluents

#107
20110083845
2011-04-14

Datacoil™ Downhole Logging System

#108
20110030951
2011-02-10

Integrated fluid filtration and recirculation system and method

#109
20100300690
2010-12-02

Apparatus and method for increasing the amount of dynamic underbalance in a wellbore

#110
20100163080
2010-07-01

Thermal fluid stimulation unit

#111
20100101773
2010-04-29

Methods of Cleaning Sand Control Screens and Gravel Packs

#112
20100044044
2010-02-25

Controlling transient underbalance in a wellbore

#113
20090183877
2009-07-23

Mesophase fluids with extended chain surfactants for downhole treatments

#114
20090151952
2009-06-18

Energized fluids and pressure manipulation for subsurface applications

#115
20090137430
2009-05-28

Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells

#116
20090126940
2009-05-21

Method and system for well production

#117
20090008091
2009-01-08

Single phase microemulsions and in situ microemulsions for cleaning formation damage

#118
20080302522
2008-12-11

System for cyclic injection and production from a well

#119
20080296024
2008-12-04

Procedures and compositions for reservoir protection

#120
20080282924
2008-11-20

Shaped charge and a perforating gun

#121
20080110618
2008-05-15

In situ fluid formation for cleaning oil- or synthetic oil-based mud

#122
20080105437
2008-05-08

System and method utilizing a compliant well screen

#123
20080047712
2008-02-28

Method for simultaneous removal of asphaltene and/or paraffin and scale from producing oil wells

#124
20080029268
2008-02-07

Flow diverter

#125
20080006408
2008-01-10

Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells

#126
20070289618
2007-12-20

Thermal fluid stimulation unit

#127
20070187090
2007-08-16

Methods of cleaning sand control screens and gravel packs

#128
20070079960
2007-04-12

Well treatment system and method

#129
20070034369
2007-02-15

Controlling transient pressure conditions in a wellbore

#130
20060231253
2006-10-19

Horizontal single trip system with rotating jetting tool

#131
20060219409
2006-10-05

Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells

#132
20060180386
2006-08-17

Acoustic stimulation tool with axial driver actuating moment arms on tines

#133
20060157237
2006-07-20

Well and method for regenerating a well

#134
20060137872
2006-06-29

Method and device for intensifying the permeability of ground layers close to bore holes and filter bodies and filter layers in wells and other production wells

#135
20060076137
2006-04-13

Perforation alignment tool for jet drilling, perforating and cleaning

#136
20060076131
2006-04-13

Well cleaning method and apparatus using detonating cord having additional reliability and a longer shelf life

#137
20050284625
2005-12-29

System and method for monitoring and removing blockage in a downhole oil and gas recovery operation

#138
20050098319
2005-05-12

System and method for scale removal in oil and gas recovery operations

#139
20050082065
2005-04-21

Pass through valve and stab tool

#140
20050061506
2005-03-24

Well treatment system and method

#141
20050028983
2005-02-10

Vibrating system and method for use in scale removal and formation stimulation in oil and gas recovery operations

#142
18815558
2025-08-19

Well rehabilitation method

#143
18611712
2025-04-29

Assessing and remediating well clogging from mobile particles, systems, apparatuses, and methods

#144
17811521
2023-07-25

Electrical submersible pumping system (ESP) solid management y-tool

#145
17707554
2023-07-18

Sand flushing above blanking plug