ClassID:

135628

E21B43/162 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Enhanced recovery methods for obtaining hydrocarbons Injecting fluid from longitudinally spaced locations in injection well

Recent Application in this class:
#1
20260132701
2026-05-14

HYDRATE MANAGEMENT METHOD

#2
20260063020
2026-03-05

HYPERGRAVITY EXPERIMENTAL APPARATUS AND METHOD FOR NATURAL GAS HYDRATE EXPLOITATION BY HYDRAULIC FRACTURING

#3
20260036026
2026-02-05

GEOTHERMAL FIELD MANAGEMENT USING FIBER OPTICS

#4
20250327388
2025-10-23

Producing Hydrocarbons from a Subsurface Reservoir

#5
20250320796
2025-10-16

BREAKTHROUGH DETECTION FOR LITHIUM BEARING RESERVOIRS

#6
20250305397
2025-10-02

COMPOSITIONS AND METHODS FOR CONTROLLING ASPHALTENE DEPOSITION

#7
20250283395
2025-09-11

ALLOCATING FLUID FLOW BY CONTROLLING INTELLIGENT COMPLETION VALVES IN A HYDROCARBON WELL USING MACHINE LEARNING

#8
20250270911
2025-08-28

Oil Production System and Method

#9
20250154858
2025-05-15

POWER SYSTEM AND METHOD

#10
20250122421
2025-04-17

COMPOSITIONS AND METHODS FOR PRESSURE PROTECTION

#11
20250109662
2025-04-03

TWO PART MILLING AND RUNNING TOOL EMPLOYING A BODY LOCK RING

#12
20250109659
2025-04-03

MULTILATERAL DOWNHOLE ASSEMBLY EMPLOYING DEGRADABLE MATERIAL TO COUPLE ITS MULTILATERAL DEFLECTOR ASSEMBLY AND RUNNING TOOL

#13
20250109635
2025-04-03

MULTILATERAL MILLING ASSEMBLY EMPLOYING DEGRADABLE MATERIAL

#14
20240318530
2024-09-26

IN SITU INJECTION OR PRODUCTION VIA A WELL USING DART-ACTUATED VALVE ASSEMBLIES AND RELATED SYSTEM AND METHOD

#15
20240263523
2024-08-08

HIGH POWER LASER PERFORATING AND LASER FRACTURING TOOLS AND METHODS OF USE

#16
20240175340
2024-05-30

Method and system for predicting time-varying principle of waterflooding oil reservoir formation parameters

#17
20240093605
2024-03-21

METHOD AND SYSTEM FOR PREDICTION AND CLASSIFICATION OF INTEGRATED VIRTUAL AND PHYSICAL SENSOR DATA

#18
20240093581
2024-03-21

Oil Production System and Method

#19
20230392483
2023-12-07

METHODS FOR TIGHT OIL PRODUCTION THROUGH SECONDARY RECOVERY USING SPACED PRODUCER AND INJECTOR WELLBORES

#20
20230392482
2023-12-07

Using fiber optic sensing to establish location, amplitude and shape of a standing wave created within a wellbore

#21
20230349276
2023-11-02

IN SITU INJECTION OR PRODUCTION VIA A WELL USING SELECTIVE OPERATION OF MULTI-VALVE ASSEMBLIES WITH CHOKED CONFIGURATIONS

#22
20230323744
2023-10-12

Fully integrated flow control module

#23
20230287770
2023-09-14

FULLY INTEGRATED FLOW CONTROL MODULE

#24
20230220754
2023-07-13

Alternating microsphere and smartwater injection for enhanced oil recovery

#25
20230183562
2023-06-15

Compositions and methods for pressure protection

#26
20230175365
2023-06-08

GAS SPARGER HEAD FOR AIRLIFT GEOTHERMAL SYSTEMS

#27
20230121121
2023-04-20

Nonmetallic downhole check valve to improve power water injector well safety and reliability

#28
20230104036
2023-04-06

FAST FRONT TRACKING IN EOR FLOODING SIMULATION ON COARSE GRIDS

#29
20230084576
2023-03-16

Compositions and methods for pressure protection

#30
20230064970
2023-03-02

Power system and method

#31
20220341284
2022-10-27

System and Method for Chemical Injection Paths

#32
20220205348
2022-06-30

Apparatus, method and wellbore installation to mitigate heat damage to well components during high temperature fluid injection

#33
20220195854
2022-06-23

Oil production system and method

#34
20220180028
2022-06-09

DOWNHOLE ELECTRODE PLACEMENT OPTIMIZATION

#35
20220145738
2022-05-12

In situ injection or production via a well using selective operation of multi-valve assemblies with choked configurations

#36
20220127938
2022-04-28

Method for recovering hydrocarbons

#37
20220042403
2022-02-10

Method and system for enhanced oil recovery using pumped liquid phase propane and liquid phase butane in an adjustable ratio

#38
20210396108
2021-12-23

Cement and anti-corrosion fluid for casing isolation

#39
20210381354
2021-12-09

Geomechanical applications using Biots coefficient based on advanced downhole logging measurements

#40
20210381346
2021-12-09

Screens

#41
20210380873
2021-12-09

Methods and compositions of using viscoelastic surfactants as diversion agents

#42
20210380870
2021-12-09

Y-grade NGL fluids for enhanced oil recovery

#43
20210380863
2021-12-09

Anti-bit balling additive

#44
20210371723
2021-12-02

Compositions for delayed acid generation for high temperature applications and methods of making and using same

#45
20210355787
2021-11-18

Adjusting the zonal allocation of an injection well with no moving parts and no intervention

#46
20210347977
2021-11-11

Method of providing homogeneous aqueous polyacrylamide concentrates and use thereof

#47
20210332651
2021-10-28

Fracture fluid alteration to mitigate barite scale precipitation in unconventional oil/gas shale systems

#48
20210312111
2021-10-07

Multiscale modeling workflow of advanced waterflooding

#49
20210310343
2021-10-07

Method of extracting oil using a functional molecule

#50
20210278106
2021-09-09

Flow control in geothermal wells

#51
20210239002
2021-08-05

Methods and systems for determining residual fluid saturation of a subsurface formation

#52
20210230989
2021-07-29

Methods for tight oil production through secondary recovery using spaced producer and injector wellbores

#53
20210222531
2021-07-22

Electronic control for simultaneous injection and production

#54
20210189225
2021-06-24

Fluids for applications in downhole tools

#55
20210140284
2021-05-13

Apparatuses, systems and methods for producing hydrocarbon material from a subterranean formation using a displacement process

#56
20210095551
2021-04-01

In situ injection or production via a well using selective operation of multi-valve assemblies with choked configurations

#57
20210062629
2021-03-04

Alkaline water flooding processes for enhanced oil recovery in carbonates

#58
20210032967
2021-02-04

Electric pump flow rate modulation for fracture monitoring and control

#59
20210002991
2021-01-07

Methods for pressure protection using a gas

#60
20210002990
2021-01-07

Methods for improving hydrocarbon production from an unconventional subterranean formation

#61
20210002544
2021-01-07

Methods for pressure protection using a foamed pressure protection composition

#62
20200408042
2020-12-31

High power laser perforating and laser fracturing tools and methods of use

#63
20200378214
2020-12-03

System and method for providing alternative chemical injection paths

#64
20200370397
2020-11-26

Method of optimizing operation one or more tubing strings in a hydrocarbon well, apparatus and system for same

#65
20200354624
2020-11-12

Methods For Unconventional Oil Recovery (UOR) By Water-Lipids or Lipids By-Products and Water-Solvent-Lipids or Lipids By-Products Emulsions Flooding

#66
20200347713
2020-11-05

Monitoring health of additive systems

#67
20200332635
2020-10-22

Simultaneous injection and fracturing interference testing

#68
20200332634
2020-10-22

Simultaneous injection and fracturing interference testing

#69
20200332633
2020-10-22

Dual injection for hydrocarbon reservoir management

#70
20200291760
2020-09-17

Oil production and recovery with supercritical water

#71
20200291753
2020-09-17

Power system and method

#72
20200248541
2020-08-06

System and method for artifically recharging a target reservoir via water injection from a local source

#73
20200157411
2020-05-21

ALCOHOL ALKOXY SULFATE COMPOSITION

#74
20200140743
2020-05-07

Microparticles and Method for Modifying the Permeability of a Reservoir Zone

#75
20200123885
2020-04-23

Hydrocarbon recovery method and hydrocarbon recovery system

#76
20200102490
2020-04-02

Y-grade NGL fluids for enhanced oil recovery

#77
20200072042
2020-03-05

Detecting a flood front in a formation

#78
20200063019
2020-02-27

ULTRASONIC SOLUBILISATION OF SURFACTANTS FOR ENHANCED OIL RECOVERY

#79
20200048972
2020-02-13

Fracture fluid alteration to mitigate barite scale precipitation in unconventional oil/gas shale systems

#80
20200031972
2020-01-30

Mobility control polymers for enhanced oil recovery

#81
20190345800
2019-11-14

Enhanced oil recovery compositions and methods thereof

#82
20190330939
2019-10-31

Method and apparatus for autonomous injectable liquid dispensing

#83
20190323326
2019-10-24

Processes and systems for injecting a fluid into a wellbore

#84
20190309604
2019-10-10

Methods and systems of modeling fluid diversion treatment operations

#85
20190153832
2019-05-23

Method, apparatus, and system for injecting chemicals into lower tertiary wells

#86
20190136672
2019-05-09

Downhole screen assembly

#87
20190094199
2019-03-28

Process for optimized chemical enhanced recovery

#88
20190063198
2019-02-28

SYSTEM, METHOD, AND APPARATUS FOR HYDRAULIC FLUID PRESSURE SWEEP OF A HYDROCARBON FORMATION WITHIN A SINGLE WELLBORE

#89
20190055812
2019-02-21

Chemical injection system

#90
20190010805
2019-01-10

Pressure testing for downhole fluid injection systems

#91
20190003292
2019-01-03

Controlling hydrocarbon production

#92
20190003291
2019-01-03

Controlling hydrocarbon production

#93
20180371886
2018-12-27

Simultaneous injection and fracturing interference testing

#94
20180328158
2018-11-15

Low pressure fluid injection for recovering hydrocarbon material from low permeability formations

#95
20180320486
2018-11-08

Screens

#96
20180305604
2018-10-25

Electrolytic system and method for processing a hydrocarbon source

#97
20180298752
2018-10-18

Controlling hydrocarbon production

#98
20180298731
2018-10-18

Power system and method

#99
20180298725
2018-10-18

Auto-shut-in chemical injection valve

#100
20180283168
2018-10-04

Directional monitoring of injection flood fronts

#101
20180252087
2018-09-06

A METHOD AND A SYSTEM FOR PERFORMING CHEMICAL TREATMENT OF A NEAR WELLBORE AREA

#102
20180252079
2018-09-06

Apparatuses, systems and methods for producing hydrocarbon material from a subterranean formation using a displacement process

#103
20180245440
2018-08-30

Methods for Refracturing a Subterranean Formation

#104
20180230788
2018-08-16

Enhanced oil recovery compositions and methods thereof

#105
20180195376
2018-07-12

Guided drill system for oil reservoir drilling

#106
20180187533
2018-07-05

HYDROCARBON PRODUCTION BY FLUIDICALLY ISOLATING VERTICAL REGIONS OF FORMATIONS

#107
20180156017
2018-06-07

Hydrocarbon extraction tool and pump assemblies

#108
20180149133
2018-05-31

Well-bore generator

#109
20180112519
2018-04-26

APPLICATION OF DEPTH DERIVATIVE OF DTS MEASUREMENTS IN IDENTIFYING INITIATION POINTS NEAR WELLBORES CREATED BY HYDRAULIC FRACTURING

#110
20180112511
2018-04-26

Fluid injection system

#111
20180107768
2018-04-19

Computationally-efficient modeling of viscous fingering effect for enhanced oil recovery (EOR) agent injected at multiple injection concentrations

#112
20180066515
2018-03-08

Controlling hydrocarbon production

#113
20180058182
2018-03-01

Y-grade NGL fluids for enhanced oil recovery

#114
20180057732
2018-03-01

Unconventional enhanced oil recovery

#115
20170321525
2017-11-09

Hydraulic stimulation method and corresponding hydraulic stimulation device

#116
20170321486
2017-11-09

High power laser perforating and laser fracturing tools and methods of use

#117
20170307772
2017-10-26

Formation measurements using downhole noise sources

#118
20170283687
2017-10-05

Ultra-high salinity surfactant formulation

#119
20170226842
2017-08-10

MONITORING HEALTH OF ADDITIVE SYSTEMS

#120
20170211354
2017-07-27

Connection system for subsea flow interface equipment

#121
20170138146
2017-05-18

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#122
20170030187
2017-02-02

Well treatment design based on three-dimensional wellbore shape

#123
20170030174
2017-02-02

Method for managing production of hydrocarbons from a subterranean reservoir

#124
20170009562
2017-01-12

Later stage hydrocarbon production processes

#125
20160369613
2016-12-22

Fluid injection system

#126
20160369160
2016-12-22

Deactivation and activation of permeability modifiers for use in subterranean formation operations

#127
20160364508
2016-12-15

Method for visualization of fluid filtration in heterogeneous porous medium

#128
20160356128
2016-12-08

Power wave optimization for oil and gas extracting processes

#129
20160319655
2016-11-03

Method and device using productivity index in drill guidance for drilling slanted water injection wells

#130
20160305228
2016-10-20

Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well

#131
20160274573
2016-09-22

Optimizing flow control device properties on a producer well in coupled injector-producer liquid flooding systems

#132
20160273316
2016-09-22

Optimizing flow control device properties for accumulated liquid injection

#133
20160186544
2016-06-30

Simultaneous injection and production well system

#134
20160160613
2016-06-09

Connection system for subsea flow interface equipment

#135
20160115770
2016-04-28

TREATMENT STRING AND METHOD OF USE THEREOF

#136
20160076343
2016-03-17

TREATING AND COMPLETION SYSTEM AND METHOD OF TREATING A FORMATION

#137
20160003017
2016-01-07

Producing hydrocarbons from a formation

#138
20150361778
2015-12-17

Acoustic method and device for facilitation of oil and gas extracting processes

#139
20150345266
2015-12-03

Method for treating and producing from a subterranean region

#140
20150300140
2015-10-22

Acid diversion treatments in injection wells using permeability modifiers

#141
20150292301
2015-10-15

Downhole chemical injection system having a density barrier

#142
20150218909
2015-08-06

Downhole flow control, joint assembly and method

#143
20150152317
2015-06-04

Swellable polymer particles for producing well treatments

#144
20150144343
2015-05-28

Methods of obtaining a hydrocarbon material contained within a subterranean formation

#145
20150107841
2015-04-23

Process for reducing viscosity of polymer-containing fluid produced in the recovery of oil

#146
20150083398
2015-03-26

Producing hydrocarbons

#147
20150027712
2015-01-29

Apparatus and methods for delivering a high volume of fluid into an underground well bore from a mobile pumping unit

#148
20150027692
2015-01-29

Multi-interval wellbore treatment method

#149
20140332226
2014-11-13

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#150
20140332222
2014-11-13

Connection system for subsea flow interface equipment

#151
20140332219
2014-11-13

Intrawell fluid injection system and method

#152
20140305633
2014-10-16

Capillary injection delivery system having tubing anchor

#153
20140251621
2014-09-11

THROUGH TUBING PERPENDICULAR BORING

#154
20140251620
2014-09-11

Method and apparatus for establishing injection into a cased bore hole using a time delay toe injection apparatus

#155
20140246197
2014-09-04

Compact wellhead system with built-in production capability

#156
20140216738
2014-08-07

BOTTOM-UP SOLVENT-AIDED PROCESS AND SYSTEM FOR HYDROCARBON RECOVERY

#157
20140209304
2014-07-31

Enhanced oil recovery using mobility control crosslinked polymers

#158
20140090851
2014-04-03

Casing valves system for selective well stimulation and control

#159
20140083692
2014-03-27

Method for controlling fluid interface level in gravity drainage oil recovery processes with crossflow

#160
20140034319
2014-02-06

Method and wellbore servicing apparatus for production completion of an oil and gas well

#161
20130333882
2013-12-19

Flowpath identification and characterization

#162
20130269950
2013-10-17

Method of simultaneously stimulating multiple zones of a formation using flow rate restrictors

#163
20130264054
2013-10-10

Multi-interval wellbore treatment method

#164
20130228372
2013-09-05

High power laser perforating and laser fracturing tools and methods of use

#165
20130199797
2013-08-08

Fluid injection device

#166
20130048291
2013-02-28

Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns

#167
20130048290
2013-02-28

INJECTION OF FLUID INTO SELECTED ONES OF MULTIPLE ZONES WITH WELL TOOLS SELECTIVELY RESPONSIVE TO MAGNETIC PATTERNS

#168
20120273214
2012-11-01

Connection system for subsea flow interface equipment

#169
20120267094
2012-10-25

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#170
20120247758
2012-10-04

Method and apparatus to treat well stimulation fluids in-situ

#171
20120241150
2012-09-27

METHODS FOR PRODUCING OIL AND/OR GAS

#172
20120175103
2012-07-12

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#173
20120168164
2012-07-05

Method and apparatus for controlling fluid flow into a wellbore

#174
20120160507
2012-06-28

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#175
20120132420
2012-05-31

Process for mineral oil production using hydrophobically associating copolymers

#176
20120090829
2012-04-19

Free mandrel system, protected casing

#177
20120055675
2012-03-08

Method and apparatus for selective acid diversion in matrix acidizing operations

#178
20110320128
2011-12-29

System and method for conformance control in a subterranean reservoir

#179
20110308817
2011-12-22

Multi-zone fracturing completion

#180
20110290500
2011-12-01

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#181
20110284226
2011-11-24

System and method for controlling one or more fluid properties within a well in a geological volume

#182
20110253380
2011-10-20

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#183
20110226483
2011-09-22

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#184
20110220367
2011-09-15

OPERATIONAL CONTROL OF MULTIPLE VALVES IN A WELL

#185
20110174478
2011-07-21

Apparatus for continuous downhole fluid release and well evaluation

#186
20110061875
2011-03-17

Operation of casing valves system for selective well stimulation and control

#187
20110042067
2011-02-24

SUBSURFACE DISCRETE INTERVAL SYSTEM WITH VERIFIABLE INTERVAL ISOLATION

#188
20110011590
2011-01-20

Use of autonomous (self-adjusting) valves in injectors in oil production

#189
20100307759
2010-12-09

Systems and methods for producing oil and/or gas

#190
20100206576
2010-08-19

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#191
20100206547
2010-08-19

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#192
20100206546
2010-08-19

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#193
20100200247
2010-08-12

System and Method for Controlling Fluid Injection in a Well

#194
20100155062
2010-06-24

Use of a heavy petroleum fraction as a drive fluid in the recovery of hydrocarbons from a subterranean formation

#195
20090301728
2009-12-10

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#196
20090301727
2009-12-10

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#197
20090294132
2009-12-03

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#198
20090294125
2009-12-03

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#199
20090260810
2009-10-22

METHOD FOR TREATING A HYDROCARBON CONTAINING FORMATION

#200
20090205821
2009-08-20

Method and apparatus to treat well stimulation fluids in-situ

#201
20090025936
2009-01-29

Connection system for subsea flow interface equipment

#202
20090014168
2009-01-15

Casing valves system for selective well stimulation and control

#203
20080302522
2008-12-11

System for cyclic injection and production from a well

#204
20080236815
2008-10-02

Method for continous downhole fluid release and well evaluation

#205
20070289749
2007-12-20

Anchor system for packers in well injection service

#206
20060243439
2006-11-02

Method and apparatus for continuous downhole fluid release

#207
20060237194
2006-10-26

Apparatus and method for recovering fluids from a well and/or injecting fluids into a well

#208
20050028984
2005-02-10

Recovery of production fluids from an oil or gas well

#209
17903633
2023-12-12

Downhole fluid acquisition, hidden pay identification, and stimulation system and method

#210
17719442
2023-04-11

Method for enhancing oil recovery from groups of wells

#211
17555381
2023-05-23

System for enhanced oil recovery with solvent recycling using liquid phase propane and butane

#212
16144322
2019-07-30

Methods and devices for restimulating a well completion

#213
15815873
2018-11-06

Method, apparatus, and system for injecting chemicals into lower tertiary wells