ClassID:

104263

C09K8/12 - 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; Well-drilling compositions; Aqueous well-drilling compositions; Clay-free compositions containing synthetic organic macromolecular compounds or their precursors

Recent Application in this class:
#301
20100326658
2010-12-30

Method and composition to increase viscosity of crosslinked polymer fluids

#302
20100314114
2010-12-16

Swellable polymer with anionic sites

#303
20100305007
2010-12-02

Copolymer based on a sulfonic acid-containing compound

#304
20100267592
2010-10-21

Multi-Component Drilling Fluid Additive, and Drilling Fluid System Incorporating the Additive

#305
20100222241
2010-09-02

Clay Inhibitors for the Drilling Industry

#306
20100210482
2010-08-19

Wellbore servicing fluids comprising cationic polymers and methods of using same

#307
20100206569
2010-08-19

Thermothickener polymer and surfactant composition and methods of employing the composition

#308
20100197530
2010-08-05

Oil field treatment fluids with viscosified brines

#309
20100190665
2010-07-29

FLUID AND METHOD FOR AGGLOMERATING PARTICLES IN A WELL SERVICE OPERATION

#310
20100160449
2010-06-24

Oil-field biocide method utilizing a peracid

#311
20100152068
2010-06-17

Wellbore treatment fluid

#312
20100152067
2010-06-17

Friction modifier for drilling fluids

#313
20100144561
2010-06-10

SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE

#314
20100144560
2010-06-10

Methods for reducing fluid loss of a viscoelastic surfactant gel into a subterranean formation

#315
20100099585
2010-04-22

AQUEOUS BASE WELLBORE FLUIDS FOR HIGH TEMPERATURE-HIGH PRESSURE APPLICATIONS AND METHODS OF USE

#316
20100081584
2010-04-01

Compositions and methods for treatment of well bore tar

#317
20100071957
2010-03-25

Drilling fluids for oil and gas reservoirs with high carbonate contents

#318
20100065269
2010-03-18

METHOD OF STABILIZING A WELL BORE OF A WELL PENETRATING A SUBTERRANEAN FORMATION

#319
20100056401
2010-03-04

Partially neutralized polyhydroxy acids for well treatments

#320
20100016182
2010-01-21

Method of treating a well with a gel stabilizer

#321
20100016179
2010-01-21

Wellbore fluid comprising at least one polymer containing pendant alkyl groups

#322
20090308616
2009-12-17

Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

#323
20090298721
2009-12-03

Friction reducer performance in water containing multivalent ions

#324
20090294179
2009-12-03

METHOD OF CONTROLLING FLUID LOSS AND MATERIALS USEFUL THEREIN

#325
20090281001
2009-11-12

Drilling Fluids Comprising Hydroxylated Polymers

#326
20090247428
2009-10-01

Wellbore fluid comprising sulfonated copolymers with pendant alkyl groups

#327
20090239771
2009-09-24

Swelling Inhibitors for Clays and Shales

#328
20090197781
2009-08-06

Wellbore Fluids Comprising Poly(trimethylene ether) glycol Polymers

#329
20090192051
2009-07-30

HIGH TEMPERATURE STABILIZER FOR WELL TREATMENT FLUIDS AND METHODS OF USING SAME

#330
20090188639
2009-07-30

Use of water-soluble polymer complexes in aqueous systems

#331
20090163387
2009-06-25

Stabilizing biphasic concentrates through the addition of small amounts of high molecular weight polyelectrolytes

#332
20090149354
2009-06-11

Well Treatment Compositions Containing Hydratable Polyvinyl Alcohol and Methods of Using Same

#333
20090143254
2009-06-04

Glycerol based drilling fluids

#334
20090131280
2009-05-21

Swelling Inhibitors for Clays and Shales

#335
20090095535
2009-04-16

Methods of drilling and consolidating subterranean formation particulates

#336
20090095534
2009-04-16

Compositions and methods for treatment of well bore tar

#337
20090075845
2009-03-19

Degradable polymers for wellbore fluids and processes

#338
20090042746
2009-02-12

Water-based drilling fluid

#339
20090036330
2009-02-05

Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations

#340
20090025896
2009-01-29

Control of the thickening of silicate-containing aqueous systems

#341
20090023617
2009-01-22

Friction reducer performance by complexing multivalent ions in water

#342
20080300151
2008-12-04

Oil-well cement fluid loss additive compostion

#343
20080280790
2008-11-13

Well treatment with complexed metal crosslinkers

#344
20080269079
2008-10-30

Polymer Coated Bridging Solids and Weighting Agents for Use in Drilling Fluids

#345
20080251252
2008-10-16

Polymeric gel system and methods for making and using same in hydrocarbon recovery

#346
20080227671
2008-09-18

Low toxicity shale hydration inhibition agent and method of use

#347
20080217064
2008-09-11

Drilling fluid and methods

#348
20080214413
2008-09-04

Water-Based Polymer Drilling Fluid and Method of Use

#349
20080202749
2008-08-28

Polymeric gel system and use in hydrocarbon recovery

#350
20080194432
2008-08-14

Method for breaking the viscosity of polymer-thickened aqueous systems for mineral oil and natural gas exploration

#351
20080169130
2008-07-17

WELLBORE FLUIDS FOR CASING DRILLING

#352
20080087423
2008-04-17

Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

#353
20080039345
2008-02-14

Shale inhibition additive for oil/gas down hole fluids and methods for making and using same

#354
20080020961
2008-01-24

Low Molecular Weight Graft Copolymers

#355
20080004188
2008-01-03

Method of thickening salt-containing media by adding methacrylate derivatives

#356
20070287636
2007-12-13

Drilling fluid additive and base fluid compositions of matter containing B100 biodiesels; and applications of such compositions of matter in well drilling, completion, and workover operations

#357
20070213233
2007-09-13

Diverting compositions, fluid loss control pills, and breakers thereof

#358
20070207932
2007-09-06

Clay inhibitors for the drilling industry

#359
20070204996
2007-09-06

Treatment fluids comprising friction reducers and antiflocculation additives and associated methods

#360
20070187146
2007-08-16

Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

#361
20070179064
2007-08-02

High temperature filtration control using water based drilling fluid systems comprising water soluble polymers

#362
20070167333
2007-07-19

Spray dried emulsifier compositions, methods for their preparation, and their use in oil-based drilling fluid compositions

#363
20070135312
2007-06-14

Solvent free fluidized polymer suspensions for oilfield servicing fluids

#364
20070125542
2007-06-07

High temperature gellant in low and high density brines

#365
20070105723
2007-05-10

Shale inhibition

#366
20070078064
2007-04-05

Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations

#367
20070078063
2007-04-05

Subterranean treatment fluids and methods of treating subterranean formations

#368
20070056736
2007-03-15

Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids

#369
20070017706
2007-01-25

Methods of drilling and consolidating subterranean formation particulates

#370
20070015670
2007-01-18

Treatment fluids with improved shale inhibition and methods of use in subterranean operations

#371
20070015668
2007-01-18

Treatment fluids with improved shale inhibition and methods of use in subterranean operations

#372
20060258543
2006-11-16

Degradable surfactants and methods for use

#373
20060254826
2006-11-16

Drilling method

#374
20060234873
2006-10-19

Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids

#375
20060213663
2006-09-28

Methods of using wellbore servicing fluids comprising resilient material

#376
20060183646
2006-08-17

Viscoelastic surfactant fluids and associated methods

#377
20060178274
2006-08-10

Wellbore treatment fluids having improved thermal stability

#378
20060178273
2006-08-10

Methods and compositions for improving the thermal stability of aqueous polymeric wellbore treatment fluids

#379
20060157248
2006-07-20

Well treatment with dissolvable polymer

#380
20060157247
2006-07-20

Additive For, Treatment Fluid For, and Method of Plugging a Tubing/Casing Annulus in a Well Bore

#381
20060116296
2006-06-01

Shale inhibition additive for oil/gas down hole fluids and methods for making and using same

#382
20060116294
2006-06-01

Method and drilling fluid systems and lost circulation pills adapted to maintain the particle size distribution of component latex particles before and after freezing of the latex particles in the presence of water

#383
20060111245
2006-05-25

Environmentally friendly water based mud deflocculant/ thinner

#384
20060108150
2006-05-25

Drilling and cementing with fluids containing zeolite

#385
20060100109
2006-05-11

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

#386
20060084579
2006-04-20

Viscoelastic surfactant mixtures

#387
20060058502
2006-03-16

Superabsorbent polymer product and use in agriculture

#388
20060058198
2006-03-16

Dry blend fracturing fluid additives

#389
20060018968
2006-01-26

Use of polyethylene glycol based fluidized polymer suspension in functional systems

#390
20060003899
2006-01-05

Drilling fluid and methods of use thereof

#391
20060002879
2006-01-05

Methods of treating keratin based substrates

#392
20050261139
2005-11-24

Well treatment fluid and methods with oxidized polysaccharide-based polymers

#393
20050241855
2005-11-03

Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell

#394
20050239663
2005-10-27

Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations

#395
20050215438
2005-09-29

Polymersome compositions and associated methods of use

#396
20050187113
2005-08-25

High performance water-based mud system

#397
20050183837
2005-08-25

Use of water-soluble polymer complexes in aqueous systems

#398
20050176591
2005-08-11

Annular fluids and method of emplacing the same

#399
20050148475
2005-07-07

Method and composition for improving performance of aqueous and polymer based fluids at high temperatures

#400
20050130849
2005-06-16

Methods of reducing fluid loss in a wellbore servicing fluid

#401
20050130846
2005-06-16

Polymer compositions

#402
20050119401
2005-06-02

Use of charged amphiphilic statistic polymers for thickening phase comprising giant micelles of surfactants and aqueous composition comprising same

#403
20050113264
2005-05-26

Well treatment fluid

#404
20050113259
2005-05-26

Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids

#405
20050045384
2005-03-03

Methods of drilling and consolidating subterranean formation particulate

#406
20050038199
2005-02-17

Methods of using crosslinkable compositions

#407
20050037930
2005-02-17

Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces

#408
20050037927
2005-02-17

Drilling Fluids, Drilling Fluids Additives and Methods Useful for Limiting Tar Sands Accretion on Metal Surfaces

#409
18914368
2025-04-01

High-temperature and high-salt resistant hyperbranched lubricant for water-based drilling fluid, and preparation and application thereof

#410
18675876
2025-04-29

Polymer viscosity reducer for water-based drilling fluid and preparation method thereof

#411
18629458
2025-07-01

Divalent-brine-based high density drilling fluids

#412
17841090
2023-11-21

Method and composition for setting a wellbore fluid

#413
16394753
2020-05-12

Temporary plugging agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof

#414
16043595
2019-05-14

Shale inhibitor and preparation method thereof, water-based drilling fluid, and shale gas drilling and extraction method

#415
15788461
2018-12-04

Loss circulation compositions (LCM) having portland cement clinker

#416
15636014
2018-02-13

Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging

#417
15489457
2017-10-10

Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wells

#418
15489193
2017-10-17

High-density water-based drilling fluid suitable for horizontal shale gas wells

#419
15368037
2017-12-19

Encapsulating agent and preparing method thereof, and drilling fluid for petroleum drilling

#420
14878778
2016-05-31

Reservoir protecting agent composition, drilling fluid for middle permeability reservoirs and use thereof