ClassID:

104995

C09K2208/30 - page 2 - CPC Classification

Classification description:

Aspects relating to compositions of drilling or well treatment fluids Viscoelastic surfactants [VES]

Recent Application in this class:
#301
20080167205
2008-07-10

Additive for viscoelastic fluid

#302
20080161212
2008-07-03

Dual-function additives for enhancing fluid loss control and stabilizing viscoelastic surfactant fluids

#303
20080161210
2008-07-03

Subterranean treatment fluids comprising viscoelastic surfactant gels

#304
20080161209
2008-07-03

Fluid Loss Control in Viscoelastic Surfactant Fracturing Fluids Using Water Soluble Polymers

#305
20080161207
2008-07-03

Subterranean treatment fluids comprising viscoelastic surfactant gels

#306
20080153720
2008-06-26

Solids suspension with nanoparticle-associated viscoelastic surfactant micellar fluids

#307
20080153719
2008-06-26

Use of Mineral Oils, Hydrogenated Polyalphaolefin Oils and Saturated Fatty Acids for Breaking VES-Gelled Fluids

#308
20080149334
2008-06-26

Particles in oil for viscoelastic surfactant gelled fluids

#309
20080146465
2008-06-19

Viscoelastic Acid

#310
20080139419
2008-06-12

Viscosity enhancers for viscoelastic surfactant stimulation fluids

#311
20080139410
2008-06-12

Viscoelastic surfactant fluid systems comprising an aromatic sulfonate and methods of using same

#312
20080135247
2008-06-12

Fracturing Fluid Loss Control Agent

#313
20080119374
2008-05-22

Polymeric acid precursor compositions and methods

#314
20080108526
2008-05-08

Saponified fatty acids as viscosity modifiers for viscoelastic surfactant-gelled fluids

#315
20080103070
2008-05-01

Ortho ester breakers for viscoelastic surfactant gels and associated methods

#316
20080103069
2008-05-01

Ortho ester breakers for viscoelastic surfactant gels and associated methods

#317
20080103066
2008-05-01

Use of mineral oils to reduce fluid loss for viscoelastic surfactant gelled fluids

#318
20080099207
2008-05-01

Oxidative systems for breaking polymer viscosified fluids

#319
20080093073
2008-04-24

Degradable material assisted diversion

#320
20080087432
2008-04-17

Friction loss reduction in viscoelastic surfactant fracturing fluids using low molecular weight water-soluble polymers

#321
20080078548
2008-04-03

Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage

#322
20080070812
2008-03-20

Carbon dioxide foamed fluids

#323
20080070809
2008-03-20

Internal breaker for oilfield fluids

#324
20080070806
2008-03-20

Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids

#325
20080060812
2008-03-13

Fluid loss control agents for viscoelastic surfactant fluids

#326
20080051302
2008-02-28

Nano-sized particles for stabilizing viscoelastic surfactant fluids

#327
20080051301
2008-02-28

Surfactants not toxic to bacteria

#328
20080035340
2008-02-14

Composition and method relating to the prevention and remediation of surfactant gel damage

#329
20080026957
2008-01-31

Treatment and Production of Subterranean Formations with Heteropolysaccharides

#330
20080023201
2008-01-31

Concentrated suspension of particulate additives for fracturing and other fluids

#331
20080011475
2008-01-17

Oil recovery method employing amphoteric surfactants

#332
20070299142
2007-12-27

Use of oil-soluble surfactants as breaker enhancers for VES-gelled fluids

#333
20070298978
2007-12-27

Compositions and methods for controlling fluid loss

#334
20070289743
2007-12-20

Degradable fiber systems for stimulation

#335
20070281869
2007-12-06

Thermoviscoelastic system fluid and well treatment method

#336
20070256835
2007-11-08

Self diverting matrix acid

#337
20070249505
2007-10-25

Viscoelastic Surfactant Fluids and Related Methods of Use

#338
20070244015
2007-10-18

Use of Glycols and Polyols to Stabilize Viscoelastic Surfactant Gelled Fluids

#339
20070238624
2007-10-11

Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid

#340
20070238622
2007-10-11

Self-cleaning well control fluid

#341
20070235189
2007-10-11

Method for treating a subterranean formation

#342
20070213232
2007-09-13

Viscoelastic Surfactant Gels With Reduced Salt Concentration

#343
20070197400
2007-08-23

Powder composition

#344
20070173414
2007-07-26

Well drilling fluids having clay control properties

#345
20070173413
2007-07-26

Non-volatile phosphorus hydrocarbon gelling agent

#346
20070151726
2007-07-05

Methods and compositions for diverting acid fluids in wellbores

#347
20070129262
2007-06-07

Viscoelastic surfactant rheology modification

#348
20070125542
2007-06-07

High temperature gellant in low and high density brines

#349
20070111896
2007-05-17

Viscoelastic cationic carbohydrate ether compositions

#350
20070107897
2007-05-17

Methods for recovering oil from an oil reservoir

#351
20070087940
2007-04-19

Method of using viscoelastic vesicular fluids to enhance productivity of formations

#352
20070060482
2007-03-15

Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids

#353
20070056737
2007-03-15

Use of mineral oils, hydrogenated polyalphaolefin oils and saturated fatty acids for breaking ves-gelled fluids

#354
20070056736
2007-03-15

Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids

#355
20070042913
2007-02-22

Wellbore treatment compositions containing foam extenders and methods of use thereof

#356
20070032386
2007-02-08

Internal breaker for oilfield treatments

#357
20070029085
2007-02-08

Prevention of Water and Condensate Blocks in Wells

#358
20060283591
2006-12-21

Method of using degradable fiber systems for stimulation

#359
20060281167
2006-12-14

Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids

#360
20060258541
2006-11-16

Clean-up additive for viscoelastic surfactant based fluids

#361
20060254771
2006-11-16

Non-Damaging Fluid-Loss Pill and Method of Using the Same

#362
20060229231
2006-10-12

Rheology enhancers

#363
20060211776
2006-09-21

Compositions and use of mono- and polyenoic acids for breaking VES-gelled fluids

#364
20060211775
2006-09-21

Saponified fatty acids as breakers for viscoelastic surfactant-gelled fluids

#365
20060185842
2006-08-24

Rheology modifiers

#366
20060183646
2006-08-17

Viscoelastic surfactant fluids and associated methods

#367
20060180310
2006-08-17

Viscoelastic surfactant fluids and associated methods

#368
20060180309
2006-08-17

Viscoelastic surfactant fluids and associated diverting methods

#369
20060180308
2006-08-17

Viscoelastic surfactant fluids and associated acidizing methods

#370
20060151168
2006-07-13

Methods of preparing and using coated particulates

#371
20060148660
2006-07-06

Foamed viscoelastic surfactants

#372
20060131017
2006-06-22

Self diverting matrix acid

#373
20060128598
2006-06-15

Viscoelastic surfactant rheology modification

#374
20060128597
2006-06-15

Viscoelastic surfactant rheology modification

#375
20060118302
2006-06-08

Self diverting matrix acid

#376
20060111248
2006-05-25

Viscoelastic surfactant rheology modification

#377
20060105919
2006-05-18

Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance

#378
20060100109
2006-05-11

Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid

#379
20060084579
2006-04-20

Viscoelastic surfactant mixtures

#380
20060081370
2006-04-20

Self diverting matrix acid

#381
20060063681
2006-03-23

Fluid having recyclable viscosity

#382
20060054324
2006-03-16

Fiber laden energized fluids and methods of use

#383
20060048944
2006-03-09

Methods of creating high porosity propped fractures

#384
20060046937
2006-03-02

Viscoelastic fluids containing nanotubes for oilfield uses

#385
20060042797
2006-03-02

Methods for controlling fluid loss

#386
20060041028
2006-02-23

Metal-mediated viscosity reduction of fluids gelled with viscoelastic surfactants

#387
20060027369
2006-02-09

Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants

#388
20060025321
2006-02-02

Viscoelastic surfactant composition having improved rheological properties and method of using for treating subterranean formations

#389
20060019836
2006-01-26

Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid

#390
20060000609
2006-01-05

Matrix acidizing high permeability contrast formations

#391
20050252659
2005-11-17

Degradable additive for viscoelastic surfactant based fluid systems

#392
20050252658
2005-11-17

System stabilizers and performance enhancers for aqueous fluids gelled with viscoelastic surfactants

#393
20050238146
2005-10-27

Destination device order billing according to call recipient

#394
20050233911
2005-10-20

Gelled oil with surfactant

#395
20050209108
2005-09-22

Compositions and methods for treating a subterranean formation

#396
20050194137
2005-09-08

Methods of using partitioned, coated particulates

#397
20050194136
2005-09-08

Methods of preparing and using coated particulates

#398
20050194135
2005-09-08

Methods using particulates coated with treatment chemical partitioning agents

#399
20050155762
2005-07-21

Additive for viscoelastic fluid

#400
20050137095
2005-06-23

Acidizing stimulation method using viscoelastic gelling agent

#401
20050126786
2005-06-16

Viscoelastic acid

#402
20050126778
2005-06-16

Hydraulic fracturing using non-ionic surfactant gelling agent

#403
20050124525
2005-06-09

Anionic viscoelastic surfactant

#404
20050124500
2005-06-09

Carbon dioxide foamed fluids

#405
20050107503
2005-05-19

Aqueous fracturing fluid

#406
20050107265
2005-05-19

Methods for controlling the fluid loss properties of viscoelastic surfactant based fluids

#407
20050037928
2005-02-17

Method of using viscoelastic vesicular fluids to enhance productivity of formations

#408
20050028978
2005-02-10

Gravel packing method

#409
20050020454
2005-01-27

Self-diverting foamed system

#410
20050003969
2005-01-06

Well service fluid and method of making and using the same

#411
20050003965
2005-01-06

Hydraulic fracturing method

#412
18751645
2025-12-23

Dual-acting delayed filtercake breaker fluid

#413
16285783
2019-11-26

Expandable plugging agent and preparation method thereof, micro-capsule plugging agent, water-based drilling fluid, and use thereof

#414
15595108
2018-10-16

Enhancing acid fracture conductivity

#415
14473113
2016-01-19

Non-coiled tubing well clean-up