ClassID:

135634

E21B43/20 - 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 Displacing by water

Recent Application in this class:
#1
20260103966
2026-04-16

SYSTEMS AND METHODS FOR WATERFLOOD OPERATIONS

#2
20260015925
2026-01-15

OIL DISPLACEMENT METHOD FOR AN ULTRA-HIGH WATER-CUT RESERVOIR

#3
20250371227
2025-12-04

System and Method for Simulating Reservoir Models

#4
20250362429
2025-11-27

SYSTEMS AND METHODS FOR SUBSURFACE MODELING

#5
20250361801
2025-11-27

METHOD OF MEASUREMENT OF INTERFACIAL TENSION (IFT) OF TWO IMMISCIBLE FLUIDS AT RESERVOIR CONDITIONS: AN IN SITU GAS BUFFERED INJECTION

#6
20250354473
2025-11-20

METHOD FOR BEDDING PRECISE PRESSURIZED WATER INJECTION BASED ON COAL SEAM INTERVAL HYDRAULIC GRADIENT CALCULATION

#7
20250327391
2025-10-23

METHODS FOR OPTIMIZING MULTI-CYCLE PRESSURE-SEPARATED WATER INJECTION IN OILFIELDS BASED ON IMPROVED BUTTERFLY ALGORITHMS

#8
20250320804
2025-10-16

SYSTEMS AND METHODS FOR PROCESSING PRODUCED OILFIELD BRINE

#9
20250290395
2025-09-18

WATERFLOODING SYSTEM AND PROCESS TO PREVENT SCALE PRECIPITATION IN OIL FIELDS

#10
20250265397
2025-08-21

Advanced Technique for Screening Enhanced Oil Recovery and Improved Oil Recovery Methodologies for a Petroleum Reservoir

#11
20250223894
2025-07-10

METHOD OF INJECTING WATER INTO RESERVOIRS WITH GEOMECHANICAL STIMULATION BY PRESSURE PULSE

#12
20250178046
2025-06-05

Methods for Petroleum Coke Carbon Capture and Sequestration

#13
20250178045
2025-06-05

Methods for Petroleum Coke Carbon Capture and Sequestration

#14
20250137341
2025-05-01

WATER INJECTION REGULATION SYSTEM AND METHOD FOR WATER INJECTION WELL

#15
20250136472
2025-05-01

SYSTEMS AND METHODS FOR TREATING PRODUCED WATER SOLUTIONS

#16
20250116178
2025-04-10

METHODS AND SYSTEMS FOR AUTOMATICALLY POSITIONING WELLS BASED UPON A RESERVOIR MODEL

#17
20250092302
2025-03-20

METHOD FOR REDUCING THE VISCOSITY OF HEAVY OIL FOR EXTRACTION, TRANSPORT IN PIPES, AND CLEANING THEREOF

#18
20250084739
2025-03-13

WATERFLOODING SYSTEM AND PROCESS TO PREVENT SCALE PRECIPITATION IN OIL FIELDS

#19
20250034448
2025-01-30

METHOD OF EXTRACTING AND SEPARATING WITH ENHANCED OIL RECOVERY

#20
20240426212
2024-12-26

WATERFLOOD MANAGEMENT OF PRODUCTION WELLS

#21
20240426198
2024-12-26

ELECTRICAL STIMULATION OF HYDROGEN-PRODUCING ROCKS AND RESERVOIRS

#22
20240417618
2024-12-19

Polymers and Nanoparticles for Flooding

#23
20240401454
2024-12-05

WATER INJECTION MANAGEMENT AND OPTIMIZATION UTILIZING ARTIFICIAL NEURAL NETWORK

#24
20240352817
2024-10-24

SYSTEMS AND METHODS FOR CORE FLOODING

#25
20240328921
2024-10-03

METHOD FOR DETERMINING EFFECTIVE STORAGE CAPACITY OF GAS STORAGE RECONSTRUCTED FROM WATER-FLOODED VOLATILE OIL RESERVOIR

#26
20240309736
2024-09-19

Subsea fluid injection system

#27
20240288051
2024-08-29

Multi-Plunger Pumps and Associated Drive Systems

#28
20240271031
2024-08-15

METHODS FOR HYDROCARBON RECOVERY

#29
20240263064
2024-08-08

Polymers and Nanoparticles for Flooding

#30
20240254382
2024-08-01

METHODS FOR HYDROCARBON RECOVERY

#31
20240247180
2024-07-25

Methods for hydrocarbon recovery

#32
20240247177
2024-07-25

Diluent with glycol ether for solids-control fluid in a wellbore

#33
20240209724
2024-06-27

SYSTEMS AND METHODS FOR PROCESSING PRODUCED OILFIELD BRINE

#34
20240200431
2024-06-20

METHOD AND SYSTEM FOR PREDICTING WATER FLOODING RECOVERY OF FAULT BLOCK RESERVOIRS CONSIDERING WHOLE PROCESS OPTIMIZATION

#35
20240199462
2024-06-20

Segregation and treatment of waste water streams for enhanced oil recovery

#36
20240183259
2024-06-06

PROCESSES FOR CHEMICAL DOSING PRIOR TO THE PAD

#37
20240182779
2024-06-06

Methods for hydrocarbon recovery

#38
20240174914
2024-05-30

METHODS FOR HYDROCARBON RECOVERY

#39
20240132711
2024-04-25

HIGH MOLECULAR WEIGHT ANIONIC POLYACRYLAMIDES

#40
20240124340
2024-04-18

DECOMPOSITION OF GAS FIELD CHEMICALS

#41
20240110092
2024-04-04

Method of waterflooding using injection solutions containing dihydrogen phosphate

#42
20240068357
2024-02-29

Systems and methods for flow rate validation in a well system

#43
20240058851
2024-02-22

Methods for Petroleum Coke Carbon Capture and Sequestration

#44
20240052234
2024-02-15

USE OF A BORATE-ACID BUFFER IN OIL AND GAS OPERATIONS

#45
20240026210
2024-01-25

Formulation for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

#46
20230406979
2023-12-21

Electro-responsive hydrogel for reservoir and downhole application

#47
20230366450
2023-11-16

Multi-plunger pumps and associated drive systems

#48
20230366302
2023-11-16

System for segmented simultaneous water injection and oil recovery through double pipes in horizontal section

#49
20230359794
2023-11-09

Determination of oil removed by gas via miscible displacement in reservoir rock

#50
20230358694
2023-11-09

METHODS AND COMPOSITIONS FOR LOW SALINITY ENHANCED OIL RECOVERY

#51
20230349276
2023-11-02

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

#52
20230331598
2023-10-19

REMOVAL OF SULFATE FROM SEAWATER

#53
20230313644
2023-10-05

Monitoring Scale Inhibitor Treatment

#54
20230311065
2023-10-05

System and method for separating and recovering gas field chemicals from wastewater

#55
20230304399
2023-09-28

System to determine existing fluids remaining saturation in homogenous and/or naturally fractured reservoirs

#56
20230287773
2023-09-14

Nitrate treatment for injectivity improvement

#57
20230279764
2023-09-07

Systems and methods for processing produced oilfield brine

#58
20230279754
2023-09-07

METHOD OF MEASUREMENT OF INTERFACIAL TENSION (IFT) OF TWO IMMISCIBLE FLUIDS AT RESERVOIR CONDITIONS: AN IN SITU GAS BUFFERED INJECTION

#59
20230252322
2023-08-10

INJECTOR RISKINESS SCORE (IRS) MATRIX

#60
20230237227
2023-07-27

Advanced technique for screening enhanced oil recovery and improved oil recovery methodologies for a petroleum reservoir

#61
20230235649
2023-07-27

System and method to calibrate digital rock wettability

#62
20230228176
2023-07-20

Installation for the storage and use of water-soluble polymers

#63
20230220754
2023-07-13

Alternating microsphere and smartwater injection for enhanced oil recovery

#64
20230195957
2023-06-22

AUTOMATIC CALIBRATION FOR A WATER INJECTION NETWORK MODEL

#65
20230184073
2023-06-15

RESERVOIR SIMULATION BASED ON CAPACITANCE-RESISTANCE MODELING FOR HYDROCARBON EXPLORATION

#66
20230175367
2023-06-08

Sequential injection of solvent, hot water, and polymer for improving heavy oil recovery

#67
20230126767
2023-04-27

Auto-invertible inverse polymer emulsion

#68
20230116506
2023-04-13

Polymers and nanoparticles for flooding

#69
20230115135
2023-04-13

Polymers and nanoparticles for flooding

#70
20230077778
2023-03-16

Determination of oil removed by gas via miscible displacement in reservoir rock

#71
20230064994
2023-03-02

WIND POWERED OFFSHORE WATER PRODUCTION FACILITY AND METHOD FOR MANUFACTURING SUCH A FACILITY

#72
20230064447
2023-03-02

ORGANIC ACID-BASED ENHANCED WATERFLOODING

#73
20230046909
2023-02-16

Nonionic Surfactants Employed with Extended Chain as the Oil Displacement Agent to use in Enhanced Oil Recovery

#74
20230027607
2023-01-26

Method for enhancing the recovery factor of heavy oil by in-situ oil-water emulsion with high phase inversion point

#75
20230026538
2023-01-26

4D quantitative and intelligent diagnosis method and system for spatio-temporal evolution of oil-gas reservoir damage types and extent

#76
20230017069
2023-01-19

PREDICTION METHOD FOR CONSTANT PRODUCTION DECLINE OF WATER-PRODUCING GAS WELL IN HIGHLY HETEROGENEOUS RESERVOIR

#77
20230003109
2023-01-05

Workflow to model and condition water distribution in a hydrocarbon reservoir

#78
20220397021
2022-12-15

Flow control system

#79
20220372848
2022-11-24

System and method for use of desulphated injection water from offshore platforms for utilization in inhibition squeezes

#80
20220357300
2022-11-10

METHOD FOR DETERMINING THE ELECTROPHORETIC MOBILITY OF EMULSION DROPLETS

#81
20220333003
2022-10-20

Use of a borate-acid buffer in oil and gas operations

#82
20220332607
2022-10-20

Down-hole selective ion removal water ionizer system for subsurface applications

#83
20220314167
2022-10-06

Seawater treatment to obtain high salinity water with low hardness for enhanced oil recovery

#84
20220290541
2022-09-15

Integrated system for subsea heating and pumping of oil and water injection for reservoir pressurization, and method of heating, of subsea pumping hydraulically actuated and water injection

#85
20220289598
2022-09-15

Cathode Coating for an Electrochemical Cell

#86
20220267176
2022-08-25

APPARATUS, METHOD AND SYSTEM FOR DESALINATING WATER USING ENERGY RECOVERY

#87
20220251438
2022-08-11

Additive for enhanced oil recovery

#88
20220243572
2022-08-04

Method of oil recovery by impressed current

#89
20220220359
2022-07-14

Composition for enhancing injectivity of a subterranean formation

#90
20220213770
2022-07-07

Stimulated water injection processes for injectivity improvement

#91
20220212935
2022-07-07

CO 2 mineralization in produced and industrial effluent water by pH-swing carbonation

#92
20220204834
2022-06-30

Oil recovery method using an emulsion composition

#93
20220169910
2022-06-02

Method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

#94
20220145738
2022-05-12

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

#95
20220136375
2022-05-05

Method and system for subsurface to subsurface water injection

#96
20220127938
2022-04-28

Method for recovering hydrocarbons

#97
20220090480
2022-03-24

Lubricating element for drag reduction in production and transportation of water-cut heavy oil in wellbore

#98
20220090460
2022-03-24

SYSTEMS AND METHODS FOR CORE FLOODING

#99
20220080470
2022-03-17

PIPE ASSEMBLY, COOLING SYSTEM WITH PIPE ASSEMBLY AND METHOD OF COOLING A FLUID

#100
20220074282
2022-03-10

WATERFLOOD COMPLETION SYSTEM AND ASSEMBLY

#101
20220073811
2022-03-10

Colloidal disperse system suitable for phase inversion to stimulate hydrocarbon production wells

#102
20220073810
2022-03-10

Method for treating production water from the enhanced oil recovery of oil by hydrocyclone in the presence of additives of tetrakis(hydroxymethyl)phosphonium salt type

#103
20220065084
2022-03-03

Enhanced hydrocarbon recovery with electric current

#104
20220065083
2022-03-03

Seismic assisted flooding processes for oil recovery in carbonates

#105
20220056790
2022-02-24

POUR POINT AVOIDANCE IN OIL/WATER PROCESSING AND TRANSPORT

#106
20220049599
2022-02-17

Magnetic emulsions as contrast agents for subsurface applications

#107
20220049035
2022-02-17

Electro-responsive hydrogel for reservoir and downhole application

#108
20220042404
2022-02-10

Producing hydrocarbons with carbon dioxide and water injection through stacked lateral dual injection

#109
20220033706
2022-02-03

METHODS FOR HYDROCARBON RECOVERY

#110
20220025765
2022-01-27

Waterflood management of production wells

#111
20220025748
2022-01-27

Artificial rain to support water flooding in remote oil fields

#112
20220019718
2022-01-20

Method and system for modeling hydrocarbon recovery workflow

#113
20220010198
2022-01-13

METHODS OF RECOVERING A HYDROCARBON MATERIAL

#114
20220003092
2022-01-06

Upconverting nanoparticles as tracers for production and well monitoring

#115
20210381352
2021-12-09

Method of measurement of interfacial tension (IFT) of two immiscible fluids at reservoir conditions: an in situ gas buffered injection

#116
20210381328
2021-12-09

Systems and methods for core flooding

#117
20210372247
2021-12-02

Method for hydrocarbon recovery from an underground formation by injection of a saline aqueous solution comprising a surfactant

#118
20210371728
2021-12-02

Methods and compositions for enhanced oil recovery

#119
20210355824
2021-11-18

Method of assessing an oil recovery process

#120
20210355787
2021-11-18

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

#121
20210355368
2021-11-18

Manganese-assisted waterflooding processes for enhanced oil recovery in carbonate formations

#122
20210355258
2021-11-18

Auto-invertible inverse polymer emulsion

#123
20210333258
2021-10-28

Methods of determining cation exchange sites occupied by crude oil and the wettability of cation exchange sites in rock core samples in a non-preserved state

#124
20210324717
2021-10-21

Integrated composite overload injection system and working method thereof

#125
20210317360
2021-10-14

Methods and materials for controlled release of materials in a subterranean reservoir

#126
20210317358
2021-10-14

METHODS AND COMPOSITIONS FOR TREATING HALITE

#127
20210317249
2021-10-14

SYNTHETIC METHOD FOR THE PREPARATION OF RHEOLOGICAL MODIFYING POLYMERS AND THE USE THEREOF

#128
20210312111
2021-10-07

Multiscale modeling workflow of advanced waterflooding

#129
20210293118
2021-09-23

WELL CONDUIT LINING METHOD AND SYSTEM

#130
20210293092
2021-09-23

Tool and method for forming a cavern for hydrocarbon production

#131
20210292637
2021-09-23

Compositions and methods for enhanced oil recovery from low permeability formations

#132
20210292636
2021-09-23

Nonionic surfactants employed with extended chain as the oil displacement agent to use in enhanced oil recovery

#133
20210278560
2021-09-09

Systems and methods to monitor downhole reservoirs

#134
20210254451
2021-08-19

Automated downhole leak detection and prediction in water injection wells

#135
20210230017
2021-07-29

Computerized Control System for a Desalination Plant

#136
20210215030
2021-07-15

Produced water balance tool

#137
20210199107
2021-07-01

Systems and methods for centralized optimization of reservoir production

#138
20210198991
2021-07-01

Hydrogen production by downhole electrolysis of reservoir brine for enhanced oil recovery

#139
20210189221
2021-06-24

Mine application method for in-situ nano-microspheres to increase crude oil recovery rate

#140
20210172311
2021-06-10

Displacing fluid for enhanced oil recovery

#141
20210172302
2021-06-10

Oil reservoir conformance improvement system and method

#142
20210165938
2021-06-03

System and Method for Simulating Reservoir Models

#143
20210155845
2021-05-27

METHOD FOR REDUCING THE VISCOSITY OF HEAVY OIL FOR EXTRACTION, TRANSPORT IN PIPES, AND CLEANING THEREOF

#144
20210131243
2021-05-06

Oil recovery method

#145
20210130193
2021-05-06

Method of controlling salinity of a low salinity injection water

#146
20210115325
2021-04-22

POLYMER FLOODING PROCESSES FOR VISCOUS OIL RECOVERY IN CARBONATE RESERVOIRS

#147
20210115324
2021-04-22

Insatiability emulsification and viscosity system with controlled viscosity and its application in water-driven reservoir

#148
20210108491
2021-04-15

Integrated construction method of fracturing and tertiary oil recovery for low-permeability reservoir

#149
20210095551
2021-04-01

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

#150
20210087913
2021-03-25

Methane gas production facility and methane gas production method

#151
20210069646
2021-03-11

Electrodialysis device for the desalination of water for oil and gas applications

#152
20210062638
2021-03-04

Determination of hydrocarbon mobilization potential for enhanced oil recovery

#153
20210062629
2021-03-04

Alkaline water flooding processes for enhanced oil recovery in carbonates

#154
20210054259
2021-02-25

Organic acid-based enhanced waterflooding

#155
20210054258
2021-02-25

Method of microbial enhanced oil recovery by changing microbial motility

#156
20210041009
2021-02-11

MULTI-PLUNGER PUMPS AND ASSOCIATED DRIVE SYSTEMS

#157
20210040818
2021-02-11

System and methodology for monitoring in an injection well

#158
20210040377
2021-02-11

Inversion agents for water-in-oil lattices and methods of use

#159
20210025274
2021-01-28

System to determine existing fluids remaining saturation in homogeneous and/or naturally fractured reservoirs

#160
20210017858
2021-01-21

LOCALLY LUMPED EQUATION OF STATE FLUID CHARACTERIZATION IN RESERVOIR SIMULATION

#161
20210016227
2021-01-21

REVERSE OSMOSIS SYSTEM FOR USE WITH A WELLBORE AND METHODS OF ASSEMBLING THE SAME

#162
20200399145
2020-12-24

WATER INJECTION INTO A HYDROCARBON RESERVOIR

#163
20200378227
2020-12-03

Supported catalyst-assisted microwave method for exploiting heavy oil reservoir

#164
20200377787
2020-12-03

Polymers and nanoparticles for flooding

#165
20200370411
2020-11-26

METHOD FOR CALCULATING RECOVERY RATIO UNDER SECONDARY-TERTIARY COMBINATION DEVELOPMENT MODE

#166
20200369946
2020-11-26

Surface charge modified nanosurfactants for reduced retention by reservoir rock

#167
20200369811
2020-11-26

Process for producing aqueous polyacrylamide solutions

#168
20200355051
2020-11-12

METHODS FOR RECOVERING PETROLEUM THAT INCLUDE USING EXOTHERMIC REACTIONS IN AQUEOUS ZONES OF RESERVOIRS

#169
20200347285
2020-11-05

Methods for hydrocarbon recovery

#170
20200340480
2020-10-29

PROCESS FLUID LUBRICATED PUMP

#171
20200340333
2020-10-29

Method of extracting gas from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity

#172
20200339863
2020-10-29

Well treatment fluid having an acidic nanoparticle based dispersion, an epoxy resin, and a polyamine

#173
20200332633
2020-10-22

Dual injection for hydrocarbon reservoir management

#174
20200326445
2020-10-15

Assessment of inaccessible pore volume for polymer flooding

#175
20200284130
2020-09-10

Tailored injection water slug designs for enhanced oil recovery in carbonates

#176
20200270511
2020-08-27

Oil recovery process using an oil recovery composition of aqueous salt solution and metal oxide nanoparticles for carbonate reservoirs

#177
20200256186
2020-08-13

Method of operating an oil/gas facility based on accurate determination of capillary pressure and interfacial tension

#178
20200248514
2020-08-06

Method of controlling salinity of an injection water during commissioning of an injection well

#179
20200230554
2020-07-23

Method of controlling salinity of a low salinity injection water

#180
20200224520
2020-07-16

Method and system for subsurface resource production

#181
20200224079
2020-07-16

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#182
20200217185
2020-07-09

Water treatment for increasing recovery of a resource from a reservoir

#183
20200202060
2020-06-25

Advanced technique for screening enhanced oil recovery and improved oil recovery methodologies for a petroleum reservoir

#184
20200201658
2020-06-25

Modeling of fluid introduction and/or fluid extraction elements in simulation of coreflood experiment

#185
20200199998
2020-06-25

Injection wells

#186
20200180964
2020-06-11

CO2 mineralization in produced and industrial effluent water by pH-swing carbonation

#187
20200172794
2020-06-04

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#188
20200172793
2020-06-04

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#189
20200165887
2020-05-28

GRADED PRESSURE DROP TYPE MULTI STAGE WATER INJECTION DEVICE AND METHOD BASED ON FRACTURE OBSERVATION

#190
20200157409
2020-05-21

SOLUBILITY ENHANCERS ON BASIS OF ALLYL ALCOHOL FOR AQUEOUS SURFACTANT FORMULATIONS FOR ENHANCED OIL RECOVERY

#191
20200141212
2020-05-07

Method for recovery of hydrocarbons in a geological reservoir by low-salinity water flooding

#192
20200131894
2020-04-30

Upconverting nanoparticles as tracers for production and well monitoring

#193
20200116154
2020-04-16

Dual ESP with selectable pumps

#194
20200115991
2020-04-16

Stratified waterflooding apparatus

#195
20200115621
2020-04-16

Methods for hydrocarbon recovery

#196
20200115620
2020-04-16

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#197
20200115619
2020-04-16

Optimized salinity for enhanced water flood applications

#198
20200095850
2020-03-26

Process for the exploitation of a deposit of hydrocarbons by injection of a polymer

#199
20200088187
2020-03-19

Linear hydraulic pump and its application in well pressure control

#200
20200087171
2020-03-19

Apparatus, method and system for desalinating water using energy recovery

#201
20200063766
2020-02-27

ADJUSTABLE PASSIVE CHOKES

#202
20200063542
2020-02-27

A METHOD OF WATER FLOW EROSION FOR MARINE GAS HYDRATE EXPLOITATION

#203
20200063532
2020-02-27

Determination of oil removed by gas via miscible displacement in reservoir rock

#204
20200057172
2020-02-20

Assessment of inaccessible pore volume for polymer flooding

#205
20200056465
2020-02-20

Fracturing method for creating complex crack network by intermittent fracturing on site

#206
20200056087
2020-02-20

Use of a borate-acid buffer in oil and gas operations

#207
20200049002
2020-02-13

CORELESS INJECTIVITY TESTING METHOD

#208
20200040253
2020-02-06

Water treatment schemes for injection water flooding recovery processes in carbonate reservoirs

#209
20200018158
2020-01-16

Detecting a flood front in a cross bed environment

#210
20200018142
2020-01-16

Polymer flooding processes for viscous oil recovery in carbonate reservoirs

#211
20200018138
2020-01-16

OFFSHORE FLOATING UTILITY PLATFORM AND TIE-BACK SYSTEM

#212
20200011164
2020-01-09

Flow monitoring system

#213
20200010757
2020-01-09

FORMULATION TO INCREASE OIL RECOVERY

#214
20200002601
2020-01-02

Methods of controlling fines migration in a well

#215
20190383140
2019-12-19

METHOD AND DEVICE FOR PREDICTING CHANGE IN WATER CUT RISING RATE IN WATER-DRIVE OIL RESERVOIR

#216
20190382648
2019-12-19

Upconverting nanoparticles as tracers for production and well monitoring

#217
20190382647
2019-12-19

Polymer flooding processes for viscous oil recovery in carbonate reservoirs

#218
20190375982
2019-12-12

Methods and materials for controlled release of materials in a subterranean reservoir

#219
20190367801
2019-12-05

In-situ salinity adjustment to improve waterflooding performance in oil-wet carbonate reservoirs

#220
20190352202
2019-11-21

Method of removing hydrocarbons from produced water

#221
20190323327
2019-10-24

Salinated wastewater for enhancing hydrocarbon recovery

#222
20190323326
2019-10-24

Processes and systems for injecting a fluid into a wellbore

#223
20190316031
2019-10-17

Injection stimulation agent for water injection well and the preparation method and application thereof

#224
20190316026
2019-10-17

Organic acid-based enhanced waterflooding

#225
20190309215
2019-10-10

Weak gel system for chemical enhanced oil recovery

#226
20190292883
2019-09-26

Downhole power generation device and separate-zone waterflooding device

#227
20190277121
2019-09-12

Method for increasing recovery of oil from carbonate oil reservoirs utilizing and “in situ” organic approach

#228
20190277114
2019-09-12

METHOD FOR EXPLOITING A HYDROCARBON DEPOSIT BY HISTORY MATCHING OF PRODUCTION AS A FUNCTION OF DIAGENESIS

#229
20190257182
2019-08-22

Oil Recovery Method

#230
20190249754
2019-08-15

Multi-plunger pumps and associated drive systems

#231
20190249075
2019-08-15

PROCESS OF RECOVERING OIL

#232
20190242226
2019-08-08

Layered water injection system and layered water injection method

#233
20190235007
2019-08-01

Method of fault detection and recovery in a tubing string located in a hydrocarbon well, and apparatus for same

#234
20190233712
2019-08-01

Engineering formation wettability characteristics

#235
20190226309
2019-07-25

Intermittent fracture flooding process

#236
20190218887
2019-07-18

Back flow restriction system and methodology for injection well

#237
20190203103
2019-07-04

Method of mineral oil production

#238
20190194524
2019-06-27

Enhanced surfactant polymer flooding processes for oil recovery in carbonate reservoirs

#239
20190177602
2019-06-13

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#240
20190169969
2019-06-06

Hydrogen production by downhole electrolysis of reservoir brine for enhanced oil recovery

#241
20190162053
2019-05-30

Method for exploiting a hydrocarbon deposit by history matching of production as a function of diagenesis

#242
20190153304
2019-05-23

DRAG-REDUCING ADDITIVES HAVING DISPERSION POLYMERS AND MICROEMULSIONS AND METHODS FOR PREPARING AND USING SAME

#243
20190136118
2019-05-09

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#244
20190136117
2019-05-09

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#245
20190119560
2019-04-25

Modified nano-graphite particle three-phase foam profile control and flooding system and preparation method thereof

#246
20190119559
2019-04-25

PREFORMED PARTICLE GEL FOR ENHANCED OIL RECOVERY

#247
20190100996
2019-04-04

Method to detect incremental oil production arising from a low salinity waterflood

#248
20190093003
2019-03-28

Method of preparing and using a drag-reducing additive having a dispersion polymer

#249
20190085673
2019-03-21

Operating hydrocarbon wells using modeling of immiscible two phase flow in a subterranean formation

#250
20190084016
2019-03-21

Pipe Assembly, Cooling System with Pipe Assembly and Method of Cooling a Fluid

#251
20190078013
2019-03-14

Well treatment fluid having an acidic nanoparticle based dispersion and a polyamine

#252
20190078012
2019-03-14

Well treatment fluid having an acidic nanoparticle based dispersion and a polyamine

#253
20190078008
2019-03-14

Loss circulation material composition having an acidic nanoparticle based dispersion and polyamine

#254
20190071324
2019-03-07

Method and apparatus for removal of oxygen from seawater

#255
20190055825
2019-02-21

Unconventional reservoir enhanced or improved oil recovery

#256
20190048251
2019-02-14

SUSPENSIONS FOR REMOVING HYDROCARBONS FROM SUBTERRANEAN FORMATIONS AND RELATED METHODS

#257
20190040724
2019-02-07

Real-time water flood optimal control with remote sensing

#258
20190023974
2019-01-24

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#259
20190010382
2019-01-10

Methods of recovering a hydrocarbon material

#260
20190003292
2019-01-03

Controlling hydrocarbon production

#261
20190003291
2019-01-03

Controlling hydrocarbon production

#262
20190002753
2019-01-03

Methods of controlling fines migration in a well

#263
20180371873
2018-12-27

Quantification of crossflow effects on fluid distribution during matrix injection treatments

#264
20180355704
2018-12-13

Polymer flow control device

#265
20180355702
2018-12-13

Method of exploiting a sedimentary basin comprising hydrocarbons, by modelling the accumulation of terrestrial organic matter

#266
20180340404
2018-11-29

Multi-directional enhanced oil recovery (MEOR) method

#267
20180327652
2018-11-15

METHODS OF RECOVERING A HYDROCARBON MATERIAL CONTAINED WITHIN A SUBTERRANEAN FORMATION

#268
20180327650
2018-11-15

Pressure pulse assisted injection water flooding processes for carbonate reservoirs

#269
20180313189
2018-11-01

Tubing retrievable injection valve assembly

#270
20180298752
2018-10-18

Controlling hydrocarbon production

#271
20180298270
2018-10-18

Optimized salinity for enhanced water flood applications

#272
20180291720
2018-10-11

Compositions and methods for controlled delivery of acid

#273
20180291717
2018-10-11

Characterization of crude oil-water interfacial film rigidity to enhance oil recovery

#274
20180291286
2018-10-11

Method for selective extraction of surfactants from crude oil

#275
20180283168
2018-10-04

Directional monitoring of injection flood fronts

#276
20180283149
2018-10-04

METHODS FOR MANAGING FORMATION VOIDAGE REPLACEMENT IN WATERFLOOD PRODUCTION OPERATIONS TO INCREASE OIL RECOVERY

#277
20180275037
2018-09-27

Device for in-line monitoring of the quality of a water-soluble polymer solution manufactured from invert emulsion or powder of said polymer

#278
20180274361
2018-09-27

Monitoring water flood location using potentials between casing and casing-mounted electrodes

#279
20180274347
2018-09-27

System and method for oil and condensate processing

#280
20180259672
2018-09-13

Bucking to improve permanent reservoir monitoring sensitivity

#281
20180259499
2018-09-13

Smart water flooding processes for increasing hydrocarbon recovery

#282
20180251386
2018-09-06

Subsea equipment cleaning system and method

#283
20180223638
2018-08-09

Method for developing a hydrocarbon reservoir by injecting a gas in the form of foam

#284
20180208480
2018-07-26

SEAWATER INJECTION CONTROL METHODS AND SYSTEMS

#285
20180195376
2018-07-12

Guided drill system for oil reservoir drilling

#286
20180194658
2018-07-12

Method and system for water injection into an oil and/or gas containing subterranean formation

#287
20180187068
2018-07-05

Method of preparing and using drag-reducing dispersion polymer compositions

#288
20180179436
2018-06-28

Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirs

#289
20180174247
2018-06-21

A Method of Generating a Production Strategy for the Development of a Reservoir of Hydrocarbon in a Natural Environment

#290
20180163523
2018-06-14

Oil Recovery Method

#291
20180163122
2018-06-14

Water control agent for oilfield application

#292
20180148633
2018-05-31

Water treatment schemes for injection water flooding recovery processes in carbonate reservoirs

#293
20180142537
2018-05-24

WATER INJECTION SYSTEM COMPRISING BIOFILM SENSOR(S)

#294
20180119531
2018-05-03

Method and system for core flood testing for reservoir souring studies

#295
20180119001
2018-05-03

Secondary and tertiary green water flooding of fractured and heterogeneous oil reservoirs at high salinity and high temperature

#296
20180118991
2018-05-03

Viscous water-based composition

#297
20180112504
2018-04-26

Microbial enhanced oil recovery method

#298
20180094184
2018-04-05

Process for recovery and mobilization of oil contained in porous media by tensoactive biomolecules produced by SmSA

#299
20180087362
2018-03-29

Fluid injection process for hydrocarbon recovery from a subsurface formation

#300
20180087361
2018-03-29

Flooding process for hydrocarbon recovery from a subsurface formation