ClassID:

104306

C09K8/52 - page 3 - 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 preventing, limiting or eliminating depositions, e.g. for cleaning

Recent Application in this class:
#601
20110005773
2011-01-13

Self healing filter-cake removal system for open hole completions

#602
20100331191
2010-12-30

Surfactant compounds

#603
20100323928
2010-12-23

Method of creating a carbon dioxide hydrate

#604
20100319916
2010-12-23

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#605
20100314110
2010-12-16

Method of treating a subterranean formation using a rheology model for fluid optimization

#606
20100300967
2010-12-02

Breaker fluids and methods of using the same

#607
20100300694
2010-12-02

METHOD FOR PRODUCING AN ORGANIC COMPOSITION CONTAINING AN N-NONYL ETHER

#608
20100298174
2010-11-25

CHEMICAL TREATMENT OF CUTTINGS FOR RE-INJECTION INTO SUBTERRANEAN FORMATIONS

#609
20100294501
2010-11-25

PROCESS FOR THE PREPARATION OF AN ORGANIC COMPOSITION COMPRISING AN N-NONYL ESTER

#610
20100285999
2010-11-11

Treatment fluids for reduction of water blocks, oil blocks, and/or gas condensates and associated methods

#611
20100276150
2010-11-04

Provision of viscous compositions below ground

#612
20100270016
2010-10-28

Compositions and Methods for Servicing Subterranean Wells

#613
20100267591
2010-10-21

Subterranean bridging agents

#614
20100263867
2010-10-21

UTILIZING ELECTROMAGNETIC RADIATION TO ACTIVATE FILTERCAKE BREAKERS DOWNHOLE

#615
20100263863
2010-10-21

Microemulsions used as spacer fluids

#616
20100252267
2010-10-07

PROCESS FOR TREATMENT OF UNDERGROUND FORMATIONS

#617
20100248996
2010-09-30

Wellbore fluid

#618
20100230108
2010-09-16

Methods of degrading subterranean filter cakes

#619
20100216671
2010-08-26

Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control

#620
20100216670
2010-08-26

Water-based fluid for preventing the formation of W/O emulsions or for resolving W/O emulsions already formed in porous matrices

#621
20100213408
2010-08-26

Use of pyroglutamic acid esters as gas hydrate inhibitors with improved biodegradability

#622
20100212896
2010-08-26

Gravel-packing carrier fluid with internal breaker

#623
20100210483
2010-08-19

PROCESS FOR THE REMOVAL OF FILTERCAKES IN OIL WELLS

#624
20100206567
2010-08-19

Gel capsules for solids entrainment

#625
20100200238
2010-08-12

Scale inhibitors compatible with sandstone acidizing

#626
20100197527
2010-08-05

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#627
20100190665
2010-07-29

FLUID AND METHOD FOR AGGLOMERATING PARTICLES IN A WELL SERVICE OPERATION

#628
20100190664
2010-07-29

Invert emulsion based completion and displacement fluid and method of use

#629
20100184631
2010-07-22

PROVISION OF VISCOUS COMPOSITIONS BELOW GROUND

#630
20100184630
2010-07-22

BREAKING THE RHEOLOGY OF A WELLBORE FLUID BY CREATING PHASE SEPARATION

#631
20100180952
2010-07-22

CONTROLLED FORMATION OF HYDRATES

#632
20100175881
2010-07-15

Using a biphasic solution as a recyclable coiled tubing cleanout fluid

#633
20100175877
2010-07-15

METHOD OF DESIGNING AND EXECUTING A WELL TREATMENT

#634
20100175874
2010-07-15

Fiber laden energized fluids and methods of use thereof

#635
20100167963
2010-07-01

Well treatment

#636
20100167962
2010-07-01

Filtercake removal composition and system

#637
20100163255
2010-07-01

Process for preventing or remediating trithiazine deposition in high HS wells

#638
20100163225
2010-07-01

System, method, and apparatus for post-fracture treatment

#639
20100160186
2010-06-24

Microemulsion containing oil field chemicals useful for oil and gas field applications

#640
20100152068
2010-06-17

Wellbore treatment fluid

#641
20100144559
2010-06-10

Kinetic gas hydrate inhibitors in completion fluids

#642
20100137170
2010-06-03

DUAL USE WELL TREATMENT COMPOSITION

#643
20100137168
2010-06-03

Nanoemulsions

#644
20100137167
2010-06-03

Method for preventing the formation of calcium carboxylate deposits in the dewatering process for crude oil/water streams

#645
20100132951
2010-06-03

Controlled De-functionalization of Filtercakes and Other Downhole Compositions

#646
20100130747
2010-05-27

Oxazolidinium compounds and use as hydrate inhibitors

#647
20100126723
2010-05-27

Fluid loss control

#648
20100108315
2010-05-06

Method for reducing the H2S content of an H2S-containing subterranean formation

#649
20100099584
2010-04-22

Mutual solvent system and method for improved oil and gas permeability in high temperature formations

#650
20100087566
2010-04-08

Use of elastomers to produce gels for treating a wellbore

#651
20100069266
2010-03-18

PROCESS FOR THE ENZYMATIC REMOVAL OF FILTER-CAKES PRODUCED BY WATER-BASED DRILLING AND COMPLETION FLUIDS

#652
20100044057
2010-02-25

Treatment Fluids Comprising Pumicite and Methods of Using Such Fluids in Subterranean Formations

#653
20100044040
2010-02-25

Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids

#654
20100032160
2010-02-11

Fluid loss compositions and methods of use for subterranean operations

#655
20100029514
2010-02-04

NAPHTHENIC ACID SOLIDS DISSOLVER COMPOSITIONS AND METHODS RELATED THERETO

#656
20100018712
2010-01-28

Method of transitioning to kinetic hydrate inhibitors in multiple tie-in well systems

#657
20100010106
2010-01-14

Metal-mediated viscosity reduction of fluids gelled with viscoelastic surfactants

#658
20090325823
2009-12-31

Gas hydrate protection with heat producing two-component gas hydrate inhibitors

#659
20090305044
2009-12-10

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#660
20090301722
2009-12-10

System, method, and apparatus for injection well clean-up operations

#661
20090298723
2009-12-03

Method for Treating Wells by Small-Size Additive-Containing Emulsions

#662
20090286701
2009-11-19

Compositions and methods for the removal of oil-based filtercakes

#663
20090286698
2009-11-19

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#664
20090281002
2009-11-12

PREVENTION AND REMEDIATION OF WATER AND CONDENSATE BLOCKS IN WELLS

#665
20090277625
2009-11-12

Compositions For Reducing Or Preventing The Degradation Of Articles Used In A Subterranean Environment And Methods Of Use Thereof

#666
20090266547
2009-10-29

Enzyme enhanced oil recovery (EEOR) for near wellbore treatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production

#667
20090253595
2009-10-08

Surfactants for hydrocarbon recovery

#668
20090221456
2009-09-03

Microemulsion cleaning composition

#669
20090221451
2009-09-03

Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut

#670
20090173663
2009-07-09

Corrosion and gas hydrate inhibitors with an increased biological degradability and a reduced toxicity

#671
20090139723
2009-06-04

Filtercake removal

#672
20090133868
2009-05-28

Aqueous two-phase emulsion gel systems for zone isolation

#673
20090114879
2009-05-07

Additive for preserving the fluidity of fluids containing gas hydrates

#674
20090114394
2009-05-07

Method of Using Water-in-Oil Emulsion to Remove Oil Base or Synthetic Oil Base Filter Cake

#675
20090114247
2009-05-07

Method of treating flow conduits and vessels with foamed composition

#676
20090107667
2009-04-30

Downhole spectroscopic hydrogen sulfide detection

#677
20090103586
2009-04-23

Method of analyzing the kinetics of gas hydrate formation in fluids

#678
20090075846
2009-03-19

Method for treating a subterranean formation with water-in-oil emulsion

#679
20090071653
2009-03-19

COMPOSITION AND METHOD FOR CLEANING FORMATION FACES

#680
20090062156
2009-03-05

Methods of treating a subterranean formation including a biocidal treatment

#681
20090054268
2009-02-26

Use of substituted polyethyleneimines as gas hydrate inhibitors with improved biodegradability

#682
20090050325
2009-02-26

Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production

#683
20090043146
2009-02-12

1-alkyl-5-oxopyrrolidine-3-carboxylic esters with improved biodegradability

#684
20090036330
2009-02-05

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

#685
20090008095
2009-01-08

Wellbore fluid comprising a base fluid and a particulate bridging agent

#686
20080314592
2008-12-25

Microemulsion or in-situ microemulsion for releasing stuck pipe

#687
20080312107
2008-12-18

Process for treating underground formations

#688
20080305971
2008-12-11

Polysaccharide treatment fluid and method of treating a subterranean formation

#689
20080293597
2008-11-27

METHOD FOR INHIBITING HYDRATE FORMATION

#690
20080287324
2008-11-20

Process for well cleaning

#691
20080274918
2008-11-06

In situ microemulsions used as spacer fluids

#692
20080264495
2008-10-30

Method and apparatus for preventing slug flow in pipelines

#693
20080236845
2008-10-02

Method for increasing the production of hydrocarbon liquids and gases

#694
20080234147
2008-09-25

Method of treating subterranean formation with crosslinked polymer fluid

#695
20080234145
2008-09-25

Lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings

#696
20080217018
2008-09-11

Method for pickling a work string using dispersed solvent-in-acid fluid design

#697
20080214865
2008-09-04

Use of Polyesters in the Form of Gas Hydrate Inhibitors

#698
20080214726
2008-09-04

Polymeric Materials

#699
20080210428
2008-09-04

Method of removing filter cake

#700
20080207780
2008-08-28

Hydroxy polyesters and uses as biodegradable demulsifiers

#701
20080194436
2008-08-14

Methods for using reversible phase oil-based drilling fluid

#702
20080190610
2008-08-14

Fracture Clean up Method

#703
20080177103
2008-07-24

Biologically Degradable Gas Hydrate Inhibitors

#704
20080171669
2008-07-17

Method and composition for removing filter cake from a horizontal wellbore using a stable acid foam

#705
20080169103
2008-07-17

Surfactant Wash Treatment Fluids and Associated Methods

#706
20080169102
2008-07-17

Surfactant wash treatment fluids and associated methods

#707
20080139416
2008-06-12

Fluid loss control and well cleanup methods

#708
20080139412
2008-06-12

Method for treating a subterranean formation

#709
20080119656
2008-05-22

Oxazolidinium compounds and use as hydrate inhibitors

#710
20080119374
2008-05-22

Polymeric acid precursor compositions and methods

#711
20080113881
2008-05-15

RECOVERY COMPOSITION AND METHOD

#712
20080113878
2008-05-15

Polymers and their production and use as gas hydrate inhibitors

#713
20080108526
2008-05-08

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

#714
20080099207
2008-05-01

Oxidative systems for breaking polymer viscosified fluids

#715
20080076682
2008-03-27

Microemulsions to convert OBM filter cakes to WBM filter cakes having filtration control

#716
20080064611
2008-03-13

ION PAIR AMPHIPHILES AS HYDRATE INHIBITORS

#717
20080051551
2008-02-28

Compositions and methods for improving the productivity of hydrocarbon producing wells using a non-ionic fluorinated polymeric surfactant

#718
20080051300
2008-02-28

Compositions and method for improving the productivity of hydrocarbon producing wells

#719
20080039347
2008-02-14

Treatment fluids comprising clarified xanthan and associated methods

#720
20080039344
2008-02-14

Composition and method for chelated scavenging compounds

#721
20080035340
2008-02-14

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

#722
20080032902
2008-02-07

Kinetic gas hydrate inhibitors in completion fluids

#723
20080017382
2008-01-24

Process for treating underground formations

#724
20080015121
2008-01-17

Compositions, methods and uses for sterically hindered quaternary ammonium compounds

#725
20080004187
2008-01-03

Energized fluids and methods of use thereof

#726
20070295368
2007-12-27

Surfactant System Method

#727
20070293403
2007-12-20

Chemical wash compositions for removing drilling fluids

#728
20070265171
2007-11-15

Method of using water-in-oil emulsion to remove oil base or synthetic oil base filter cake

#729
20070221378
2007-09-27

Cements for use across formations containing gas hydrates

#730
20070215355
2007-09-20

Methods of treating wellbores with recyclable fluids

#731
20070204997
2007-09-06

Process for disruption of filter cakes

#732
20070191235
2007-08-16

Surfactant package for well treatment and method using same

#733
20070191234
2007-08-16

Surfactant package for well treatment and method for using same

#734
20070184988
2007-08-09

Wellbore fluids containing additives for removing a filter cake and methods of using the same

#735
20070173672
2007-07-26

Additives for inhibiting gas hydrate formation

#736
20070173416
2007-07-26

Well treatment compositions for use in acidizing a well

#737
20070173413
2007-07-26

Non-volatile phosphorus hydrocarbon gelling agent

#738
20070169938
2007-07-26

Methods of controlled acidization in a wellbore

#739
20070169932
2007-07-26

Method of treating a subterranean formation using a rheology model for fluid optimization

#740
20070163779
2007-07-19

Compositions containing a buffer and a peroxide or peracid useful for treating wells

#741
20070158067
2007-07-12

Scale inhibitors compatible with sandstone acidizing

#742
20070135314
2007-06-14

Composition comprising a fully dissolved non-HF fluoride source and method for treating a subterranean formation

#743
20070135310
2007-06-14

Compositions for treating a well penetrating a subterranean formation and uses thereof

#744
20070129256
2007-06-07

Additives for inhibiting the formation of gas hydrates

#745
20070123428
2007-05-31

Subterranean well and oil or gas stream treatment with bis(3-alkoxyalkan-2-ol) sulfides, sulfones, and sulfoxides: new surface active agents

#746
20070114036
2007-05-24

Silicate-containing additives for well bore treatments and associated methods

#747
20070111902
2007-05-17

Methods for using reversible phase oil-based drilling fluid

#748
20070111899
2007-05-17

Pre-engineered pills for the improvement of drilling muds

#749
20070066491
2007-03-22

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#750
20070056731
2007-03-15

Method for reducing density of a system fluid and for performing drilling operations using a reduced density system fluid comprising aerogel

#751
20070032689
2007-02-08

Gas hydrate inhibitors

#752
20070027253
2007-02-01

Method of removing an invert emulsion filter cake after the drilling process using a single phase microemulsion

#753
20060283599
2006-12-21

Methods for remediating subterranean formations

#754
20060283597
2006-12-21

Methods of degrading filter cakes in a subterranean formation

#755
20060276345
2006-12-07

Methods controlling the degradation rate of hydrolytically degradable materials

#756
20060264335
2006-11-23

Corrosion inhibitor intensifier and method of using the same

#757
20060258543
2006-11-16

Degradable surfactants and methods for use

#758
20060258541
2006-11-16

Clean-up additive for viscoelastic surfactant based fluids

#759
20060254771
2006-11-16

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

#760
20060254770
2006-11-16

Method and composition for cleaning a well bore prior to cementing

#761
20060237691
2006-10-26

Amine-based gas hydrate inhibitors

#762
20060223715
2006-10-05

Water based completion and displacement fluid and method of use

#763
20060223714
2006-10-05

Invert emulsion based completion and displacement fluid and method of use

#764
20060223713
2006-10-05

Method of completing a well with hydrate inhibitors

#765
20060218852
2006-10-05

Controlling the formation of crystalline hydrates in fluid systems

#766
20060205608
2006-09-14

Filter cake degradation compositions and methods of use in subterranean operations

#767
20060205603
2006-09-14

Method for inhibiting hydrate formation

#768
20060194700
2006-08-31

Corrosion inhibitor systems for low, moderate and high temperature fluids and methods for making and using same

#769
20060185851
2006-08-24

Method and apparatus for treating fouled wells

#770
20060185846
2006-08-24

Methods for forming a permeable and stable mass in a subterranean formation

#771
20060178276
2006-08-10

Energized fluids and methods of use thereof

#772
20060172893
2006-08-03

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#773
20060169457
2006-08-03

Method and apparatus for preventing slug flow in pipelines

#774
20060169182
2006-08-03

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#775
20060166837
2006-07-27

Methods of treating subterranean formations with heteropolysaccharides based fluids

#776
20060166836
2006-07-27

Energized fluids and methods of use thereof

#777
20060166835
2006-07-27

Microemulsion containing oil field chemicals useful for oil and gas field applications

#778
20060162928
2006-07-27

Process for treating a formation

#779
20060157248
2006-07-20

Well treatment with dissolvable polymer

#780
20060148656
2006-07-06

Silicate-containing additives for well bore treatments and associated methods

#781
20060144594
2006-07-06

Silicate-containing additives for well bore treatments and associated methods

#782
20060137879
2006-06-29

Method for removing filter cake from a horizontal wellbore using acid foam

#783
20060137878
2006-06-29

Drilling fluid additive and method

#784
20060135372
2006-06-22

Controlled degradation of filtercakes and other downhole compositions

#785
20060106265
2006-05-18

Method and compositions for inhibiting formation of hydrocarbon hydrates

#786
20060105918
2006-05-18

Methods of degrading filter cakes in subterranean formations

#787
20060105917
2006-05-18

In-situ filter cake degradation compositions and methods of use in subterranean formations

#788
20060102349
2006-05-18

Composition and method for treating a subterranean formation

#789
20060096757
2006-05-11

Method of treating an oil or gas well with biodegradable low toxicity fluid system

#790
20060094913
2006-05-04

Ion pair amphiphiles as hydrate inhibitors

#791
20060073986
2006-04-06

Method of removing an invert emulsion filter cake after the drilling process using a single phase microemulsion

#792
20060065396
2006-03-30

Compositions containing water control treatments and formation damage control additives, and methods for their use

#793
20060063681
2006-03-23

Fluid having recyclable viscosity

#794
20060060356
2006-03-23

Production of free gas by gas hydrate conversion

#795
20060058449
2006-03-16

Vinyllactam copolymers used as gas hydrate inhibitors

#796
20060054324
2006-03-16

Fiber laden energized fluids and methods of use

#797
20060046937
2006-03-02

Viscoelastic fluids containing nanotubes for oilfield uses

#798
20060042796
2006-03-02

Method for displacing oil base drilling muds and/or residues from oil base drilling mud using water-in-oil emulsion

#799
20060041028
2006-02-23

Metal-mediated viscosity reduction of fluids gelled with viscoelastic surfactants

#800
20060037754
2006-02-23

Gelled liquid hydrocarbon treatment fluids having reduced phosphorus volatility and their associated methods of use and preparation

#801
20060035789
2006-02-16

Surfactant package for well treatment and method using same

#802
20060027369
2006-02-09

Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants

#803
20060020145
2006-01-26

Bis(3-alkoxyalkan-2-ol) sulfides, sulfones, and sulfoxides: new surface active agents

#804
20060016596
2006-01-26

Treatment fluids and methods of use in subterranean formations

#805
20050261137
2005-11-24

Methods and fluid compositions for depositing and removing filter cake in a well bore

#806
20050257932
2005-11-24

Filter cake degradation compositions and associated methods

#807
20050239663
2005-10-27

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

#808
20050209107
2005-09-22

Composition and process for the treatment of hydrogen sulfide

#809
20050197257
2005-09-08

Subterranean acidizing treatment fluids and methods of using these fluids in subterranean formations

#810
20050178548
2005-08-18

Gel capsules for solids entrainment

#811
20050173677
2005-08-11

Mutual solvent for improved oil and gas permeability

#812
20050170975
2005-08-04

Process for treating an oil well

#813
20050170974
2005-08-04

Process for treating an oil well

#814
20050161631
2005-07-28

Antifreeze proteins for inhibition of clathrate hydrate formation and reformation

#815
20050155761
2005-07-21

Wellbore fluids containing additives for removing a filter cake and methods of using the same

#816
20050150520
2005-07-14

Methods of simultaneously cleaning and disinfecting industrial water systems

#817
20050139356
2005-06-30

Method for enhancing the retention efficiency of treatment chemicals in subterranean formations

#818
20050126785
2005-06-16

Filter cake degradation compositions and methods of use in subterranean operations

#819
20050103496
2005-05-19

Compositions and methods for weighting a breaker coating for uniform distribution in a particulate pack

#820
20050101495
2005-05-12

Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability

#821
20050085676
2005-04-21

Methods for inhibiting hydrate blockage in oil and gas pipelines using betaines and amine oxides

#822
20050085675
2005-04-21

Methods for inhibiting hydrate blockage in oil and gas pipelines using ester compounds

#823
20050085396
2005-04-21

Methods for inhibiting hydrate blockage in oil and gas pipelines using amino alcohols and ester compounds

#824
20050081714
2005-04-21

Methods for inhibiting hydrate blockage in oil and gas pipelines using simple quaternary ammonium and phosphonium compounds

#825
20050081432
2005-04-21

Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds

#826
20050072570
2005-04-07

Contamination-resistant sand control apparatus and method for preventing contamination of sand control devices

#827
20050065037
2005-03-24

Product for coating wellbore screens

#828
20050059557
2005-03-17

Subterranean treatment fluids comprising a degradable bridging agent and methods of treating subterranean formations

#829
20050059556
2005-03-17

Treatment fluids and methods of use in subterranean formations

#830
20050056423
2005-03-17

Methods of removing filter cake from well producing zones

#831
20050034868
2005-02-17

Orthoester compositions and methods of use in subterranean applications

#832
20050016772
2005-01-27

Method of drilling a borehole into an earth formation

#833
20050003968
2005-01-06

Drilling fluids

#834
18751645
2025-12-23

Dual-acting delayed filtercake breaker fluid

#835
17834295
2023-10-17

Wellbore cleaner for use in displacement trains

#836
17090145
2021-12-28

Methods of dissolving gas hydrates

#837
16746230
2020-12-29

Modified silicon dioxide material of fluorocarbon active agent type super-amphiphobic cutting-carrying agent suitable for water-based drilling fluid and preparation method thereof

#838
15459460
2018-08-14

Fracturing fluid composition and a method of fracturing a subterranean formation using the same

#839
14500295
2015-12-22

System and method for pH control of lean MEG product from MEG regeneration and reclamation packages