ClassID:

104327

C09K8/594 - page 2 - CPC Classification

Classification description:

Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations; Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids Compositions used in combination with injected gas, e.g. CO orcarbonated gas

Recent Application in this class:
#301
20140251607
2014-09-11

Nonionic surfactants for enhanced crude oil recovery

#302
20140238702
2014-08-28

Low pH crosslinking of polymers

#303
20140231080
2014-08-21

In-situ artificial pressurization of a well with carbon dioxide recycling to increase oil production

#304
20140224484
2014-08-14

Use of carbon dioxide soluble nonionic surfactants for enhanced crude oil recovery

#305
20140224483
2014-08-14

Hydrocarbon mobility and recovery through in-situ combustion with the addition of ammonia

#306
20140196895
2014-07-17

In situ combustion process with reduced COemissions

#307
20140151041
2014-06-05

Foaming composition with wettability modifying and corrosion inhibitory properties for high temperature and ultra-high salinity

#308
20140131046
2014-05-15

Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules

#309
20140110117
2014-04-24

Modified nonionic surfactant formulations for enhanced oil recovery

#310
20140054050
2014-02-27

Gas Fracture Injection to Overcome Retrograde Condensation in Gas Wells

#311
20140045732
2014-02-13

Mobilization of heavy oil

#312
20130192826
2013-08-01

Composition and method for recovering hydrocarbon fluids from a subterranean reservoir

#313
20130074943
2013-03-28

Solubilizing surfactants into supercritical carbon dioxide for enhanced oil recovery

#314
20130068470
2013-03-21

Oil recovery

#315
20130068312
2013-03-21

Suspensions for enhanced oil recovery

#316
20130048284
2013-02-28

Carbon dioxide-resistant Portland based cement composition

#317
20130048080
2013-02-28

Transport method, transport mixture and transport system for the pressurised transport of carbon dioxide and use of a treatment mixture

#318
20120325483
2012-12-27

COMBINED MISCIBLE OR NEAR MISCIBLE GAS AND ASP FLOODING FOR ENHANCED OIL RECOVERY

#319
20120285694
2012-11-15

Enhanced foam stability applications and methods

#320
20120267109
2012-10-25

METHOD OF TREATING A FRACTURED WELL

#321
20120220502
2012-08-30

COMPOSITIONS COMPRISING ALKYLALKOXYSULFONATES FOR THE PRODUCTION OF HIGH TEMPERATURE STABLE FOAMS

#322
20120125644
2012-05-24

Enhanced oil recovery in low permeability reservoirs

#323
20120125620
2012-05-24

Foamers for downhole injection

#324
20120103635
2012-05-03

Dispersion compositions with nonionic surfactants for use in petroleum recovery

#325
20120088700
2012-04-12

Inhibiting Carbon Dioxide Induced Deposition

#326
20120073836
2012-03-29

Methods for increasing oil production

#327
20120037363
2012-02-16

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#328
20110303410
2011-12-15

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#329
20110278024
2011-11-17

Prevention or mitigation of steel corrosion caused by combustion gas

#330
20110275546
2011-11-10

Foaming composition for high temperature and salinity

#331
20110272151
2011-11-10

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#332
20110269652
2011-11-03

GEMINI SURFACTANTS

#333
20110218127
2011-09-08

Polycarbonate block copolymers

#334
20110198081
2011-08-18

Hydrocarbon recovery enhancement methods using low salinity carbonated brines and treatment fluids

#335
20110172924
2011-07-14

Forecasting asphaltic precipitation

#336
20110152136
2011-06-23

Solvent assisted oil recovery

#337
20110108269
2011-05-12

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#338
20110071060
2011-03-24

FOAMERS FOR DOWNHOLE INJECTION

#339
20110071059
2011-03-24

Foamers for downhole injection

#340
20110024131
2011-02-03

Method for recovering oil from an oil well

#341
20100326662
2010-12-30

Viscous oil recovery using emulsions

#342
20100294499
2010-11-25

Oil recovery employing alkylene carbonates

#343
20100270038
2010-10-28

Kerogen extraction from subterranean oil shale resources

#344
20100147506
2010-06-17

Truck-mounted pumping system for treating a subterranean formation via a well with a mixture of liquids

#345
20100140139
2010-06-10

Systems and methods for absorbing gases into a liquid

#346
20100126737
2010-05-27

Methods for increasing oil production

#347
20100126719
2010-05-27

Increasing oil production

#348
20100032171
2010-02-11

Supercritical pentane as an extractant for oil shale

#349
20090260827
2009-10-22

Enzyme enhanced oil recovery (EEOR) for water alternating gas (WAG) systems

#350
20090211758
2009-08-27

Method of oil recovery using a foamy oil-external emulsion

#351
20090205823
2009-08-20

Process for enhancing the production of oil from depleted, fractured reservoirs using surfactants and gas pressurization

#352
20090200011
2009-08-13

Truck-mounted pumping system for treating a subterranean formation via a well with a mixture of liquids

#353
20090194278
2009-08-06

Enhanced Oil Recovery In Oxygen Based In Situ Combustion Using Foaming Agents

#354
20090131283
2009-05-21

Imidazoline-based heterocyclic foamers for downhole injection

#355
20090126934
2009-05-21

Kerogen extraction from subterranean oil shale resources

#356
20090056941
2009-03-05

Methods for producing oil and/or gas

#357
20090038803
2009-02-12

Pumping system and method for injecting a mixture of liquids into a subterranean formation

#358
20080269045
2008-10-30

PRODUCTION OF LOWER MOLECULAR WEIGHT HYDROCARBONS

#359
20080257556
2008-10-23

Non-aqueous foam composition for gas lift injection and methods for making and using same

#360
20080217009
2008-09-11

High performance foams for unloading gas wells

#361
20080142230
2008-06-19

Enzyme enhanced oil recovery (EEOR) for water alternating gas (WAG) systems

#362
20080128135
2008-06-05

DEHYDRATING TREATMENT OF OIL AND GAS WELLS

#363
20080066918
2008-03-20

Method and apparatus to enhance hydrocarbon production from wells

#364
20080006410
2008-01-10

Kerogen extraction from subterranean oil shale resources

#365
20070261844
2007-11-15

Method and apparatus for capture and sequester of carbon dioxide and extraction of energy from large land masses during and after extraction of hydrocarbon fuels or contaminants using energy and critical fluids

#366
20070246222
2007-10-25

Method for recovering oil from a gas-lifted oil well penetrating a subterranean oil-bearing formation

#367
20070187151
2007-08-16

Pumping system for injecting a mixture of liquids via a well into a subterranean formation

#368
20070079963
2007-04-12

Process for foaming a wet hydrocarbon composition

#369
20050217851
2005-10-06

Method for stimulation of liquid flow in a well

#370
19219804
2026-01-06

Method of oil recovery from subsurface reservoirs using improved carbon dioxide enhanced oil recovery

#371
19185160
2025-07-01

Supercritical CO2 thickener for shale gas reservoir based on hollow mesoporous silica nanoparticles and preparation method thereof

#372
18875203
2025-10-14

Surfactant formulations for aqueous foam stability at high temperature and high salinity conditions

#373
18751246
2024-11-19

CO2 responsive core-shell multi-stage swelling microsphere and preparation method thereof

#374
18640037
2025-01-28

Carbon dioxide viscosification

#375
18425863
2025-07-29

System and method for generating hydrogen and enhancing wellbore injectivity and hydrocarbon recovery

#376
18180530
2024-06-11

Thermochemical fluid injection to prevent cool front invasion in COgeothermal reservoirs

#377
18178979
2024-05-28

Treatment of subterranean formations

#378
17834537
2024-10-29

Method for paraffin inhibiting

#379
17573208
2024-05-14

Fog enhanced air transportation injection well for in-situ steam/carbon dioxide generation

#380
17213427
2022-07-12

Adsorption improved water in supercritical CO2 encapsulation for improved oil recovery

#381
16378907
2019-08-27

In-situ carbon dioxide generation for heavy oil recovery method

#382
16118823
2019-07-02

In-situ carbon dioxide generation for heavy oil recovery method

#383
15716207
2018-09-25

Imidazoline compound, mobility control system, plugging agent for gas channeling, and method for carbon dioxide flooding