ClassID:

135634

E21B43/20 - page 2 - 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:
#301
20180066515
2018-03-08

Controlling hydrocarbon production

#302
20180058185
2018-03-01

Injection water pre-treatment and injection system and method

#303
20180038222
2018-02-08

Well monitoring using casing centralizers

#304
20180037809
2018-02-08

Co-surfactant foam-forming composition for enhanced oil recovery

#305
20180030819
2018-02-01

Modeling of Fluid Introduction and/or Fluid Extraction Elements in Simulation of Coreflood Experiment

#306
20180028978
2018-02-01

Methods and systems for treating high temperature produced water

#307
20180023370
2018-01-25

Selective rotationally aligning indicating mechanism

#308
20180023364
2018-01-25

Capture method for flow back retrieval of borehole plug with a lower slip assembly

#309
20180023363
2018-01-25

Flow back retrieval method for borehole plug with a lower slip assembly through tubulars of different sizes

#310
20180016487
2018-01-18

Process of providing a viscosified water for injecting into an underwater subterranean oil bearing formation and associated underwater facility

#311
20180016159
2018-01-18

Systems and methods for deaerating seawater using a rotating packed bed device

#312
20180010428
2018-01-11

Alternative helical flow control device for polymer injection in horizontal wells

#313
20180010427
2018-01-11

Inflow control device for polymer injection in horizontal wells

#314
20180010423
2018-01-11

Tubing retrievable injection valve assembly

#315
20180010035
2018-01-11

SECONDARY HYDROCARBON-FLUID RECOVERY ENHANCEMENT

#316
20180003020
2018-01-04

HEAVY FLUID INJECTION METHOD FOR CELLAR HYDROCARBON RECOVERY

#317
20180002591
2018-01-04

Oil production using multistage surfactant polymer chemical flood

#318
20170371062
2017-12-28

Systems and methods for mapping hydrocarbon reservoirs using electromagnetic transmissions

#319
20170370209
2017-12-28

METHOD FOR PREDICTING POST-FRACKING PRESSURE BUILD-UP IN SHALE

#320
20170369766
2017-12-28

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

#321
20170362494
2017-12-21

Weak gel system for chemical enhanced oil recovery

#322
20170355897
2017-12-14

Method of mineral oil production

#323
20170349455
2017-12-07

Apparatus, method and system for desalinating water

#324
20170335665
2017-11-23

Systems and methods for increasing recovery efficiency of petroleum reservoirs

#325
20170321687
2017-11-09

Linear hydraulic pump and its application in well pressure control

#326
20170321544
2017-11-09

Through-casing fiber optic electrical system for formation monitoring

#327
20170321111
2017-11-09

Method for subterranean petroleum recovery using a surfactant blend

#328
20170321110
2017-11-09

ENHANCED OIL RECOVERY FLUID COMPRISING POTASSIUM CARBONATE, ASSOCIATED METHODS AND ARRANGEMENT

#329
20170314377
2017-11-02

Method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well

#330
20170314370
2017-11-02

Downhole method and apparatus

#331
20170306966
2017-10-26

Subsea process lubricated water injection pump

#332
20170298710
2017-10-19

Multi-functional surfactant complexes for use in subterranean formations

#333
20170292375
2017-10-12

Surfactant selection methods for wetting alteration in subterranean formations

#334
20170292367
2017-10-12

Monitoring water floods using potentials between casing-mounted electrodes

#335
20170292064
2017-10-12

Method of pumping aqueous fluid containing surface modifying treatment agent into a well

#336
20170268944
2017-09-21

Detection of strain in fiber optics cables induced by narrow-band signals

#337
20170268332
2017-09-21

Determining the robustness of discrete fracture network permeability estimates

#338
20170267545
2017-09-21

Subsea fluid injection system

#339
20170260842
2017-09-14

Low frequency distributed acoustic sensing

#340
20170260067
2017-09-14

TREATMENT OF SUBTERRANEAN WELLS WITH ELECTROLYZED WATER

#341
20170253506
2017-09-07

Subsea deoxygenation in a water injection process plant

#342
20170247609
2017-08-31

METHODS AND COMPOSITIONS FOR RECOVERY OF RESIDUAL OIL FROM A POROUS STRUCTURE

#343
20170241595
2017-08-24

Device for actuating pressure relief valve

#344
20170240799
2017-08-24

Hydrazide crosslinked polymer emulsions for use in crude oil recovery

#345
20170234126
2017-08-17

METHODS OF DETERMINING PROPERTIES OF SUBSURFACE FORMATIONS USING LOW SALINITY WATER INJECTION

#346
20170234121
2017-08-17

Systems and methods for transient-pressure testing of water injection wells to determine reservoir damages

#347
20170226834
2017-08-10

Intermittent fracture flooding process

#348
20170226833
2017-08-10

Multi-directional enhanced oil recovery (MEOR) method

#349
20170226405
2017-08-10

Fluid efficiency and flow back enhancer

#350
20170218755
2017-08-03

Locally lumped equation of state fluid characterization in reservoir simulation

#351
20170218285
2017-08-03

WASTE TREATMENT PROCESS FOR A FOSSIL-FUEL EXTRACTION SITE

#352
20170218279
2017-08-03

Small scale modular gas to liquids plant for stranded remote gas

#353
20170205260
2017-07-20

Opto-acoustic flowmeter for use in subterranean wells

#354
20170204323
2017-07-20

Polymer flooding processes for viscous oil recovery in carbonate reservoirs

#355
20170204322
2017-07-20

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

#356
20170198550
2017-07-13

INJECTOR FILL DISPLACEMENT TUBES

#357
20170198205
2017-07-13

Method and compositions for enhanced oil recovery

#358
20170198197
2017-07-13

System and method for inhibiting scale formation in oil wells

#359
20170183942
2017-06-29

Fluid processing machines with balance piston on inlet

#360
20170175505
2017-06-22

Method and system for subsurface resource production

#361
20170173533
2017-06-22

Reverse osmosis system for use with a wellbore and methods of assembling the same

#362
20170166803
2017-06-15

ENHANCED OIL RECOVERY

#363
20170159417
2017-06-08

INTELLIGENT WATER FLOOD REGULATION

#364
20170158948
2017-06-08

Methods for hydrocarbon recovery

#365
20170158947
2017-06-08

Methods for hydrocarbon recovery

#366
20170145757
2017-05-25

Multi-flow pipe and pipe couplings therefor for use in fracture flow hydrocarbon recovery processes

#367
20170145292
2017-05-25

WEAK GEL SYSTEM FOR CHEMICAL ENHANCED OIL RECOVERY

#368
20170138162
2017-05-18

Method of reducing impact of differential breakdown stress in a treated interval

#369
20170137697
2017-05-18

Methods for optimizing salinity for enhanced water flood applications

#370
20170116359
2017-04-27

Reservoir souring forecasting

#371
20170107781
2017-04-20

Radially expandable ratchet locking borehole barrier assembly

#372
20170096880
2017-04-06

Reservoir permeability upscaling

#373
20170096876
2017-04-06

Zone selection with smart object selectively operating predetermined fracturing access valves

#374
20170089186
2017-03-30

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

#375
20170081583
2017-03-23

Chemical imbibition by gels containing surfactants for fractured carbonate reservoirs

#376
20170076022
2017-03-16

Avoiding water breakthrough in unconsolidated sands

#377
20170051732
2017-02-23

Pump system and method of starting pump

#378
20170051595
2017-02-23

Method of microbially assisted water alternating gas injection as a means of enhanced oil recovery by supplementing the immiscible water injection cycle with nutrients to improve oil release in oil-containing rock formations

#379
20170051195
2017-02-23

Surfactant Compositions

#380
20170045636
2017-02-16

Enhancing reservoir characterization using real-time SRV and fracture evolution parameters

#381
20170044877
2017-02-16

Hydrocarbon recovery process

#382
20170037700
2017-02-09

Flow control valve including a plurality of tubes having a geometrically variable cross-section

#383
20170037300
2017-02-09

Phosphorus functional inversion agents for water-in-oil latices and methods of use

#384
20170037299
2017-02-09

Nonionic inversion agents for water-in-oil latices and methods of use

#385
20170037298
2017-02-09

Carbonyl functional inversion agents for water-in-oil latices and methods of use

#386
20170022997
2017-01-26

Pump for the conveyance of a fluid with varying viscosity

#387
20170009569
2017-01-12

CAPROCK BREACH DETERMINATION TECHNIQUE

#388
20170009562
2017-01-12

Later stage hydrocarbon production processes

#389
20160369159
2016-12-22

Alkyl polyglucoside desorbents for enhanced oil recovery

#390
20160369157
2016-12-22

Methods of forming suspensions and methods for recovery of hydrocarbon material from subterranean formations

#391
20160368800
2016-12-22

SUBSEA SEAWATER FILTRATION AND TREATMENT SYSTEM

#392
20160364508
2016-12-15

Method for visualization of fluid filtration in heterogeneous porous medium

#393
20160362955
2016-12-15

Method employing pressure transients in hydrocarbon recovery operations

#394
20160341207
2016-11-24

Surface pump assembly

#395
20160341004
2016-11-24

Plug-actuated flow control member

#396
20160340568
2016-11-24

Selection of optimal surfactants for performing surfactant flooding enhanced oil recovery

#397
20160326847
2016-11-10

Method and system for inhibiting freezing of low salinity water in a subsea low salinity water injection flowline

#398
20160319655
2016-11-03

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

#399
20160319640
2016-11-03

Construction of digital representation of complex compositional fluids

#400
20160312556
2016-10-27

Motion activated ball dropping tool

#401
20160305237
2016-10-20

METHOD AND SYSTEM OF SHOWING HETEROGENEITY OF A POROUS SAMPLE

#402
20160304768
2016-10-20

Method and system for the recovery of oil, using water that has been treated using magnetic particles

#403
20160304371
2016-10-20

Subsurface water purification method

#404
20160298446
2016-10-13

Downhole EM sensing using SAGNAC interferometer for wellbore monitoring

#405
20160298426
2016-10-13

Method for injecting low salinity water

#406
20160298419
2016-10-13

Flow system

#407
20160297692
2016-10-13

Purification of oil-polluted water and device suitable therefor

#408
20160290124
2016-10-06

Cross-coupling based fluid front monitoring

#409
20160289540
2016-10-06

Zirconium gel particle combination flooding system and preparation method thereof

#410
20160289539
2016-10-06

Oil recovery processes at high salinity carbonate reservoirs

#411
20160289536
2016-10-06

System and method for inhibiting scale formation in oil wells

#412
20160289101
2016-10-06

Water treatment suited for oil production wells

#413
20160282881
2016-09-29

Optimizing flow control device properties on both producer and injector wells in coupled injector-producer liquid flooding systems

#414
20160281487
2016-09-29

System and method for offshore (topside or subsea) and onshore water reinjection for secondary recovery

#415
20160281481
2016-09-29

Optimizing flow control device properties on injector wells in liquid flooding systems

#416
20160281480
2016-09-29

Method for increasing gas recovery in fractures proximate fracture treated wellbores

#417
20160281474
2016-09-29

Downhole method and apparatus

#418
20160281472
2016-09-29

Optimizing flow control device properties for a liquid injection well using a coupled wellbore-reservoir model

#419
20160281468
2016-09-29

Wellbore isolation while placing valves on production

#420
20160274573
2016-09-22

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

#421
20160273316
2016-09-22

Optimizing flow control device properties for accumulated liquid injection

#422
20160273315
2016-09-22

Optimizing oil recovery and reducing water production in smart wells

#423
20160272873
2016-09-22

Engineering formation wettability characteristics

#424
20160265310
2016-09-15

Electrically actuated downhole flow control apparatus

#425
20160264848
2016-09-15

METHODS AND SYSTEMS FOR HYDROCARBON RECOVERY

#426
20160264846
2016-09-15

Method and system for the enhanced recovery of oil, using water that has been depleted in ions using magnetic particles

#427
20160259868
2016-09-08

Multi-stage linear solution for implicit reservoir simulation

#428
20160251939
2016-09-01

Tool for opening and closing sleeves within a wellbore

#429
20160245764
2016-08-25

Nuclear magnetic resonance (NMR) distributions and pore information

#430
20160230506
2016-08-11

Tubing retrievable injection valve assembly

#431
20160222762
2016-08-04

Diphenyliodonium salts as sulfidogenesis inhibitors and antimicrobials

#432
20160222280
2016-08-04

Microbial enhanced oil recovery method

#433
20160215589
2016-07-28

Tubular actuation system and method

#434
20160215585
2016-07-28

System and method for fluid injection

#435
20160186547
2016-06-30

Methods of producing hydrocarbons from a wellbore utilizing optimized high-pressure water injection

#436
20160186546
2016-06-30

METHODS OF PRODUCING HYDROCARBONS FROM A WELLBORE UTILIZING OPTIMIZED WATER INJECTION

#437
20160186545
2016-06-30

LOW SALINITY WATER INJECTION ALTERNATING WITH IMMISCIBLE GAS INJECTION TO INCREASE OIL RECOVERY

#438
20160186041
2016-06-30

Conformance control in enhanced oil recovery

#439
20160178799
2016-06-23

Flooding analysis tool and method thereof

#440
20160177697
2016-06-23

Subsurface injection of reject stream

#441
20160177690
2016-06-23

Flooding analysis tool and method thereof

#442
20160177689
2016-06-23

Flooding analysis tool and method thereof

#443
20160177688
2016-06-23

Flooding analysis tool and method thereof

#444
20160177687
2016-06-23

Flooding analysis tool and method thereof

#445
20160177679
2016-06-23

Flooding analysis tool and method thereof

#446
20160177662
2016-06-23

Controlled alternating flow direction for enhanced conformance

#447
20160160621
2016-06-09

Oil recovery method

#448
20160115777
2016-04-28

System and method for predicting the front arrival time in reservoir seismic monitoring

#449
20160109334
2016-04-21

Apparatus and method for testing multiple samples

#450
20160061020
2016-03-03

Flooding analysis tool and method thereof

#451
20160040521
2016-02-11

Methods for separating oil and/or gas mixtures

#452
20160024375
2016-01-28

Friction Reducing Polymers

#453
20150376984
2015-12-31

Bridge type concentric continuously adjustable water distributor

#454
20150369039
2015-12-24

Bridge type concentric direct reading testing and commissioning instrument

#455
20150345270
2015-12-03

THERMALLY INDUCED EXPANSION DRIVE IN HEAVY OIL RESERVOIRS

#456
20150329660
2015-11-19

Water-soluble, hydrophobically associating copolymers having novel hydrophobically associating monomers

#457
20150315457
2015-11-05

COMPOSITION AND METHOD FOR TREATING SUBTERRANEAN FORMATION

#458
20150300149
2015-10-22

Method and system for configuring crude oil displacement system

#459
20150275635
2015-10-01

Method and system for enhancing oil recovery (EOR) by injecting treated water into an oil bearing formation

#460
20150275614
2015-10-01

Low shear trim

#461
20150275613
2015-10-01

Low shear trim

#462
20150275612
2015-10-01

Low shear trim

#463
20150275611
2015-10-01

Low shear trim

#464
20150247392
2015-09-03

Systems and methods for the treatment of oil and/or gas wells with a polymeric material

#465
20150233223
2015-08-20

ENHANCED OIL RECOVERY PROCESS TO INJECT SURFACTANT-AUGMENTED LOW-SALINITY WATER IN OIL-WET CARBONATE RESERVOIRS

#466
20150218921
2015-08-06

Methods of recovering hydrocarbons using a suspension

#467
20150218920
2015-08-06

Methods of pre-flushing reservoir paths for higher return of hydrocarbon fluids

#468
20150204996
2015-07-23

Method for detecting fluid fronts using a combination of electric and gravity measurements in boreholes

#469
20150204181
2015-07-23

Downhole oil/water separation system for improved injectivity and reservoir recovery

#470
20150204170
2015-07-23

SINGLE WELL INJECT-PRODUCE PILOT FOR EOR

#471
20150159472
2015-06-11

Apparatus, systems, and methods for downhole fluid filtration

#472
20150152719
2015-06-04

Enhanced secondary recovery of oil and gas in tight hydrocarbon reservoirs

#473
20150104795
2015-04-16

Biogenic fuel gas generation in geologic hydrocarbon deposits

#474
20150096757
2015-04-09

Optimized salinity for enhanced water flood applications

#475
20150094999
2015-04-02

INTERFACE POINT METHOD MODELING OF THE STEAM-ASSISTED GRAVITY DRAINAGE PRODUCTION OF OIL

#476
20150083390
2015-03-26

Controlled Rise Velocity Buoyant Ball Assisted Hydrocarbon Lift System and Method

#477
20150068748
2015-03-12

Compositions and methods for diverting injected fluids to achieve improved hydrocarbon fluid recovery

#478
20150060075
2015-03-05

Oil recovery process

#479
20150041143
2015-02-12

Apparatus for controlling injection pressure in offshore enhanced oil recovery

#480
20150027698
2015-01-29

Method of lifting oil from a well

#481
20150000916
2015-01-01

ENHANCED OIL RECOVERY USING SEAWATER AND EDTA

#482
20140360719
2014-12-11

Enhanced oil recovery method

#483
20140359265
2014-12-04

Fast modeling using interpolated starting points

#484
20140352958
2014-12-04

PROCESS FOR ENHANCING OIL RECOVERY FROM AN OIL-BEARING FORMATION

#485
20140345862
2014-11-27

Oil recovery processing using a low salinity fluid composition

#486
20140338903
2014-11-20

METHOD FOR ENHANCED OIL RECOVERY BY IN SITU CARBON DIOXIDE GENERATION

#487
20140336938
2014-11-13

Methodology for presenting dumpflood data

#488
20140326463
2014-11-06

System and method for waterflooding offshore reservoirs

#489
20140290942
2014-10-02

METHOD FOR INJECTING LOW SALINITY WATER

#490
20140216934
2014-08-07

Electrochemical desalination for oil recovery

#491
20140202692
2014-07-24

METHOD FOR THE IN SITU RECOVERY OF HEAVY OIL FROM A SUBTERRANEAN DEPOSIT

#492
20140196902
2014-07-17

Method, system, and composition for producing oil

#493
20140102692
2014-04-17

Method for hydrocarbon recovery using a water changing or driving agent with RF heating

#494
20140083693
2014-03-27

Enzyme enhanced oil recovery

#495
20140069642
2014-03-13

Enhanced oil recovery system and a method for operating an underground oil reservoir

#496
20140053637
2014-02-27

Device for measuring and controlling on-line viscosity at high pressure

#497
20140042058
2014-02-13

Process for producing and separating oil

#498
20140041856
2014-02-13

SYSTEM FOR PRODUCING AND SEPARATING OIL

#499
20130264064
2013-10-10

Technical system, method and uses for dosing of at least one liquid treatment means into injection water to an injection well

#500
20130255955
2013-10-03

Water processing systems and methods

#501
20130213892
2013-08-22

Method and control devices for production of consistent water quality from membrane-based water treatment for use in improved hydrocarbon recovery operations

#502
20130213650
2013-08-22

Optimized chemical enhanced recovery method

#503
20130206405
2013-08-15

METHODS AND SYSTEMS FOR IN-SITU EXTRACTION OF BITUMEN

#504
20130199797
2013-08-08

Fluid injection device

#505
20130168097
2013-07-04

Method and system for enhancing oil recovery (EOR) by injecting treated water into an oil bearing formation

#506
20130125630
2013-05-23

Apparatus and method for testing multiple samples

#507
20130116998
2013-05-09

Statistical reservoir model based on detected flow events

#508
20130098620
2013-04-25

Flow rate control valve for solutions of polymers

#509
20130098610
2013-04-25

Method for hydrocarbon recovery using heated liquid water injection with RF heating

#510
20130096890
2013-04-18

Material point method modeling in oil and gas reservoirs

#511
20130081824
2013-04-04

Tubing retrievable injection valve assembly

#512
20130081818
2013-04-04

Method employing pressure transients in hydrocarbon recovery operations

#513
20130068456
2013-03-21

Systems and methods for separating oil and/or gas mixtures

#514
20130062078
2013-03-14

Method of reducing zone permeability by in-situ formation gel of urotropin and urea in an aqueous solution

#515
20130062060
2013-03-14

Treatment for recycling fracture water—gas and oil recovery in shale deposits

#516
20130048279
2013-02-28

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#517
20130043024
2013-02-21

Method of improving mineral oil production by heating the formation and forming gel

#518
20130020082
2013-01-24

Method and compositions for enhanced oil recovery

#519
20130020079
2013-01-24

TREATMENT OF SUBTERRANEAN WELLS WITH ELECTROLYZED WATER

#520
20130014952
2013-01-17

TREATMENT OF HYDROCARBON CONTAINING RESERVOIRS WITH ELECTROLYZED WATER

#521
20120330553
2012-12-27

METHOD FOR GENERATING A GENERAL ENHANCED OIL RECOVERY AND WATERFLOOD FORECASTING MODEL

#522
20120312540
2012-12-13

Magnets-based tool for pulsing injected liquid

#523
20120292029
2012-11-22

Linear pressure reducer for regulating injection pressure in an enhanced oil recovery system

#524
20120292026
2012-11-22

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#525
20120261124
2012-10-18

RECOVERY OF OIL

#526
20120247759
2012-10-04

Formulation and method of use for exploitation of heavy and extra heavy oil wells

#527
20120241148
2012-09-27

CONTROL OF FLUID FLOW DURING TREATMENT OF SUBTERRANEAN SITES USING WELL FLUID INJECTION

#528
20120227975
2012-09-13

Water injection systems and methods

#529
20120205127
2012-08-16

Selective displacement of water in pressure communication with a hydrocarbon reservoir

#530
20120205096
2012-08-16

METHOD FOR DISPLACEMENT OF WATER FROM A POROUS AND PERMEABLE FORMATION

#531
20120199355
2012-08-09

WATER FLOODING METHOD FOR SECONDARY HYDROCARBON RECOVERY

#532
20120199343
2012-08-09

Multistage process for producing mineral oil using microorganisms

#533
20120168164
2012-07-05

Method and apparatus for controlling fluid flow into a wellbore

#534
20120152551
2012-06-21

Inducing flowback of damaging mud-induced materials and debris to improve acid stimulation of long horizontal injection wells in tight carbonate formations

#535
20120145388
2012-06-14

In situ process to recover methane gas from hydrates

#536
20120143579
2012-06-07

Method and system for configuring crude oil displacement system

#537
20120138304
2012-06-07

Device for directing the flow of a fluid using a pressure switch

#538
20120132420
2012-05-31

Process for mineral oil production using hydrophobically associating copolymers

#539
20120125616
2012-05-24

Method for integrated enhanced oil recovery from heterogeneous reservoirs

#540
20120125611
2012-05-24

Water injection systems and methods

#541
20120125605
2012-05-24

Systems and methods for enhanced waterfloods

#542
20120125604
2012-05-24

Systems and methods for enhanced waterfloods

#543
20120125603
2012-05-24

Systems and methods for enhanced waterfloods

#544
20120101759
2012-04-26

Computer-implemented systems and methods for forecasting performance of water flooding of an oil reservoir system using a hybrid analytical-empirical methodology

#545
20120085555
2012-04-12

Hydrocarbon recovery process

#546
20120085530
2012-04-12

Treatment for recycling fracture water—gas and oil recovery in shale deposits

#547
20120080187
2012-04-05

Process for producing mineral oil from underground mineral oil deposits

#548
20120067570
2012-03-22

Low salinity reservoir environment

#549
20120035085
2012-02-09

Drag-reducing copolymer compositions

#550
20120018161
2012-01-26

Oil recovery process for carbonate reservoirs

#551
20120018160
2012-01-26

Oil recovery process for carbonate reservoirs

#552
20120006552
2012-01-12

Method for pre-treatment of subterranean sites adjacent to water injection wells

#553
20120006542
2012-01-12

Method for pre-treatment of subterranean sites adjacent to water injection wells

#554
20120006541
2012-01-12

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