ClassID:

104278

C09K8/36 - 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; Non-aqueous well-drilling compositions, e.g. oil-based Water-in-oil emulsions

Recent Application in this class:
#301
20150065398
2015-03-05

NANOPARTICLE LUBRICITY AND ANTI-CORROSION AGENT

#302
20150051120
2015-02-19

Methods for producing emulsifiers for oil-based drilling fluids

#303
20150027701
2015-01-29

Methods of using oleaginous fluids for completion operations

#304
20150024975
2015-01-22

Invert emulsion fluids

#305
20150014062
2015-01-15

Composition comprising an alkoxylated amine compound and a carboxylic acid compound, use thereof in water in oil emulsions and process using the composition as or as part of a drilling fluid

#306
20140367108
2014-12-18

Acidizing compositions including ampholyte polymers

#307
20140367091
2014-12-18

Wellbore fluids incorporating magnetic carbon nanoribbons and magnetic functionalized carbon nanoribbons and methods of using the same

#308
20140357536
2014-12-04

Invert emulsion fluid containing a hygroscopic liquid, a polymeric suspending agent, and low-density solids

#309
20140352962
2014-12-04

Ampholyte polymeric compounds in subterranean applications

#310
20140352960
2014-12-04

Ampholyte polymeric compounds in subterranean applications

#311
20140349895
2014-11-27

Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent

#312
20140336085
2014-11-13

Additives for oil-based drilling fluids

#313
20140284057
2014-09-25

Methods and compositions for use in oil and/or gas wells

#314
20140284053
2014-09-25

Methods and compositions for use in oil and/or gas wells

#315
20140224485
2014-08-14

Invert emulsion gravel pack fluid and method

#316
20140144643
2014-05-29

Water-in-oil emulsion composition and method of treating subterranean formation using same

#317
20140138160
2014-05-22

Hydrocarbon-based drilling fluids containing cesium phosphate

#318
20140121135
2014-05-01

Wellbore servicing compositions and methods of making and using same

#319
20140116695
2014-05-01

EMULSIFIED ACID WITH HYDROPHOBIC NANOPARTICLES FOR WELL STIMULATION

#320
20140106992
2014-04-17

INVERT EMULSION WITH ENCAPSULATED BREAKER FOR WELL TREATMENT

#321
20140090896
2014-04-03

Method for improving high temperature rheology in drilling fluids

#322
20140087976
2014-03-27

Method of drilling boreholes with invert emulsion drilling fluids having enhanced rheology

#323
20140076635
2014-03-20

METHOD OF CARRYING OUT A WELLBORE OPERATION

#324
20140066341
2014-03-06

NON-AQUEOUS DRILLING ADDITIVE USEFUL TO IMPROVE LOW SHEAR RATE VISCOSITY

#325
20140066338
2014-03-06

Salt-free invert emulsion drilling fluids and methods of drilling boreholes

#326
20140057810
2014-02-27

Drilling fluid containing a surfactant having a high boiling point and a long chain tail group

#327
20140051620
2014-02-20

Rapidly inverting water-in-oil polymer emulsions

#328
20140051608
2014-02-20

Wellbore Servicing Compositions and Methods of Making and Using Same

#329
20140051607
2014-02-20

Particles for use in wellbore fluids

#330
20140048258
2014-02-20

DRILLING COMPOSITION, PROCESS FOR ITS PREPARATION, AND APPLICATIONS THEREOF

#331
20140011712
2014-01-09

Biodegradable Organophilic Clays for Drilling Fluids

#332
20130331303
2013-12-12

FLAT RHEOLOGY WELLBORE FLUID

#333
20130331302
2013-12-12

Fluid loss additive for oil-based muds

#334
20130310282
2013-11-21

Wellbore Servicing Fluids and Methods of Making and Using Same

#335
20130303411
2013-11-14

Methods and materials to enhance high temperature rheology in invert emulsions

#336
20130303410
2013-11-14

Invert Emulsion Drilling Fluids for Flat Rheology Drilling

#337
20130288933
2013-10-31

Rheology Modifiers

#338
20130267444
2013-10-10

Wellbore servicing fluid system and methods of use

#339
20130264057
2013-10-10

Wellbore servicing fluid system and methods of use

#340
20130248257
2013-09-26

Drilling Fluid Composition

#341
20130217604
2013-08-22

Drilling fluid containing a surfactant having a high boiling point and a long chain tail group

#342
20130098615
2013-04-25

NOVEL HIGH DENSITY BRINES FOR COMPLETION APPLICATIONS

#343
20130096036
2013-04-18

Nanoemulsions

#344
20130085086
2013-04-04

Fluid loss additives and methods of making and using same

#345
20130085085
2013-04-04

Fluid loss additives and methods of making and using same

#346
20130079258
2013-03-28

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

#347
20130045899
2013-02-21

Compositions And Methods To Stabilize Acid-In-Oil Emulsions

#348
20130025863
2013-01-31

Methods for servicing subterranean wells

#349
20130020083
2013-01-24

Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent

#350
20130020081
2013-01-24

Invert emulsion fluid containing a hygroscopic liquid, a polymeric suspending agent, and low-density solids

#351
20130005626
2013-01-03

Surfactant compositions

#352
20130000900
2013-01-03

DOWN-HOLE PLACEMENT OF WATER-SWELLABLE POLYMERS

#353
20120325492
2012-12-27

Drilling Composition, Process for its Preparation, and Applications Thereof

#354
20120318515
2012-12-20

Method of inhibiting or controlling release of well treatment agent

#355
20120295821
2012-11-22

High performance drilling fluids with submicron-size particles as the weighting agent

#356
20120277124
2012-11-01

High Performance Drilling Fluids with Submicron-Size Particles as the Weighting Agent

#357
20120264659
2012-10-18

Methods to Modify Drilling Fluids to Improve Lost Circulation Control

#358
20120264657
2012-10-18

Emulsion Stabilizing Agents for Drilling and Completion Fluids

#359
20120258893
2012-10-11

Oil based drilling fluids with enhanced stability at high temperatures

#360
20120241220
2012-09-27

Dendritic Surfactants and Extended Surfactants for Drilling Fluid Formulations

#361
20120237757
2012-09-20

Methods for Forming a Permeable and Stable Mass in a Subterranean Formation

#362
20120220501
2012-08-30

Non-aqueous, acid soluble, high-density completion fluids and process

#363
20120190594
2012-07-26

Organoclay materials for environmentally sensitive regions

#364
20120186880
2012-07-26

Invert Emulsion Fluids With High Internal Phase Concentration

#365
20120181033
2012-07-19

Nanohybrid phase interfaces for foaming in oil field applications

#366
20120181029
2012-07-19

Nanohybrid-stabilized emulsions and methods of use in oil field applications

#367
20120181019
2012-07-19

Nanohybrid phase interfaces for altering wettability in oil field applications

#368
20120165233
2012-06-28

Gravel pack fluid composition and emulsion therefor

#369
20120165231
2012-06-28

Drilling fluids having reduced sag potential and related methods

#370
20120129735
2012-05-24

NON-AQUEOUS DRILLING ADDITIVE USEFUL TO PRODUCE A FLAT TEMPERATURE-RHEOLOGY PROFILE

#371
20120122739
2012-05-17

VISCOSIFYING POLYMERS AND METHODS OF USE

#372
20120097403
2012-04-26

Invert drilling fluids having enhanced rheology and methods of drilling boreholes

#373
20120088698
2012-04-12

WATER IN OIL EMULSION, METHOD FOR THE PRODUCTION THEREOF

#374
20120080232
2012-04-05

Emulsion-based cleaning composition for oilfield applications

#375
20120080195
2012-04-05

Drilling Composition, Process for its Preparation, and Applications Thereof

#376
20120067575
2012-03-22

Methods of using invert emulsion fluids with high internal phase concentration

#377
20120004146
2012-01-05

Surfactant additives used to retain producibility while drilling

#378
20120000708
2012-01-05

Surfactant additives used to retain producibility while drilling

#379
20120000657
2012-01-05

Treatment fluid for wells drilled in oil mud, in the form of a delayed effect water-in-oil emulsion

#380
20110306523
2011-12-15

Polyamide emulsifier based on polyamines and fatty acid/carboxylic acid for oil based drilling fluid applications

#381
20110266061
2011-11-03

Drilling fluid

#382
20110254553
2011-10-20

Electrically conductive oil-based drilling fluids

#383
20110245112
2011-10-06

Reconditioning and reuse of wellbore servicing fluids

#384
20110214864
2011-09-08

Invert drilling fluids having enhanced rheology and methods of drilling boreholes

#385
20110166047
2011-07-07

NITROGEN-FREE INVERT EMULSION WELLBORE FLUID

#386
20110160103
2011-06-30

Compressible packer fluids and methods of making and using same

#387
20110160099
2011-06-30

INVERT EMULSION WELLBORE FLUIDS AND METHOD FOR REDUCING TOXICITY THEREOF

#388
20110160097
2011-06-30

VISCOSIFYING POLYMERS AND METHODS OF USE

#389
20110146983
2011-06-23

METHOD OF CARRYING OUT A WLLBORE OPERATION

#390
20110111989
2011-05-12

COMPOSITIONS AND METHODS TO STABILIZE ACID-IN-OIL EMULSIONS

#391
20110111988
2011-05-12

Electrically Conductive Oil Base Drilling Fluids Containing Carbon Nanotubes

#392
20110053808
2011-03-03

Suspension characteristics in invert emulsions

#393
20110040025
2011-02-17

Block Copolymer, Process For Making The Same, And Use In Emulsions

#394
20110036573
2011-02-17

Methods for swelling swellable elements in a portion of a well using a water-in-oil emulsion

#395
20110034583
2011-02-10

Methods for Forming a Permeable and Stable Mass in a Subterranean Formation

#396
20110021388
2011-01-27

Microemulsifiers and methods of making and using same

#397
20110021385
2011-01-27

Secondary emulsifiers for inverted emulsion fluids and methods for making and using same

#398
20110011645
2011-01-20

Crosslinked glycerol or oligoglycerol esters, and use thereof as an additive in drilling fluids

#399
20110009299
2011-01-13

EMULSION STABILIZING AGENTS FOR DRILLING AND COMPLETION FLUIDS

#400
20110000673
2011-01-06

Drilling fluid and method for reducing lost circulation

#401
20100331191
2010-12-30

Surfactant compounds

#402
20100323932
2010-12-23

METHODS FOR TREATING A WELL OR THE LIKE

#403
20100323931
2010-12-23

STABILISED EMULSIONS

#404
20100319919
2010-12-23

Application of degradable fibers in invert emulsion fluids for kill pills

#405
20100317550
2010-12-16

Drilling fluid and process of making the same

#406
20100305008
2010-12-02

Organophilic clay additives and oil well drilling fluids with less temperature dependent rheological properties

#407
20100300759
2010-12-02

Drilling fluid containing carbon nanotubes

#408
20100300694
2010-12-02

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

#409
20100298176
2010-11-25

Oligoglycerol fatty acid ester lubricant additives for drilling fluids

#410
20100294501
2010-11-25

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

#411
20100273684
2010-10-28

Method for enhancing stability of oil based drilling fluids at high temperatures

#412
20100258313
2010-10-14

Invert silicate fluids for wellbore strengthening

#413
20100258307
2010-10-14

DRILLING COMPOSITION, PROCESS FOR ITS PREPARATION, AND APPLICATIONS THEREOF

#414
20100256021
2010-10-07

Oligoglycerol fatty acid ester thickeners for oil-based drilling fluids

#415
20100248996
2010-09-30

Wellbore fluid

#416
20100216671
2010-08-26

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

#417
20100212896
2010-08-26

Gravel-packing carrier fluid with internal breaker

#418
20100210480
2010-08-19

USE OF INVERT EPOXY EMULSIONS FOR WELLBORE STABILIZATION

#419
20100193244
2010-08-05

Drilling fluid additive for reducing lost circulation in a drilling operation

#420
20100173805
2010-07-08

USE OF WAX IN OIL-BASED DRILLING FLUID

#421
20100160186
2010-06-24

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

#422
20100137168
2010-06-03

Nanoemulsions

#423
20100081587
2010-04-01

Microemulsifiers and methods of making and using same

#424
20100029516
2010-02-04

FIBER ASSISTED EMULSION SYSTEM

#425
20100022421
2010-01-28

Process for preparing thermally stable oil-in-water and water-in-oil emulsions

#426
20100009873
2010-01-14

Thermally stable compositions and use thereof in drilling fluids

#427
20090305911
2009-12-10

DOWNHOLE DRILLING COMPOSITIONS AND METHODS OF PREPARATION

#428
20090270280
2009-10-29

Water-in-oil emulsions with hydrogel droplets background

#429
20090260885
2009-10-22

Methods Of Preparing Hydrocarbon, Water And Organophilic Clay Emulsions And Compositions Thereof

#430
20090221456
2009-09-03

Microemulsion cleaning composition

#431
20090211758
2009-08-27

Method of oil recovery using a foamy oil-external emulsion

#432
20090192052
2009-07-30

High performance drilling fluids with submicron-size particles as the weighting agent

#433
20090184055
2009-07-23

Method for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid

#434
20090176666
2009-07-09

Drilling fluids containing biodegradable organophilic clay

#435
20090163386
2009-06-25

COMPOSITIONS FOR DRILLING FLUIDS USEFUL TO PRODUCE FLAT TEMPERATURE RHEOLOGY TO SUCH FLUIDS OVER A WIDE TEMPERATURE RANGE AND DRILLING FLUIDS CONTAINING SUCH COMPOSITIONS

#436
20090131281
2009-05-21

Drilling mud containing hydrophobin

#437
20080318810
2008-12-25

Self-breakable yield point enhancer for oil based drilling mud

#438
20080248975
2008-10-09

Drilling fluid containing chlorosulfonated alpha-olefin copolymers

#439
20080227670
2008-09-18

Drilling fluids containing biodegradable organophilic clay treated with an amide-containing quaternary ammonium surfactant

#440
20080194795
2008-08-14

Oxidized and maleated compounds and compositions

#441
20080194436
2008-08-14

Methods for using reversible phase oil-based drilling fluid

#442
20080194433
2008-08-14

METHOD FOR VISCOSIFYING INVERT EMULSION DRILLING FLUIDS

#443
20080194429
2008-08-14

Process for minimizing breaking of emulsion type drilling fluid systems, emulsion type drilling fluid systems, and spotting fluids

#444
20080182763
2008-07-31

Pumpable multiple phase compositions for controlled release applications downhole

#445
20080179570
2008-07-31

Maleated and oxidized fatty acids

#446
20080171671
2008-07-17

Use of Ethoxylated Amidoamines as Emulsifiers in Drilling Fluids

#447
20080171670
2008-07-17

Oil Base Fluids and Organophilic Tannin-Containing Compositions to Lower the Fluid Loss Thereof

#448
20080169130
2008-07-17

WELLBORE FLUIDS FOR CASING DRILLING

#449
20080135302
2008-06-12

High density brines for use in wellbore fluids

#450
20080113880
2008-05-15

SOLID-LIQUID SEPARATION OF OIL-BASED MUDS

#451
20080076682
2008-03-27

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

#452
20080064612
2008-03-13

Invert emulsion drilling fluid systems comprising an emulsified aqueous phase comprising dispersed integral latex particles

#453
20080061003
2008-03-13

Method for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid

#454
20080032900
2008-02-07

Method of drilling using invert emulsion drilling fluids

#455
20080015118
2008-01-17

Diesel oil-based invert emulsion drilling fluids and methods of drilling boreholes

#456
20080011485
2008-01-17

Reversible emulsions stabilized by amphiphilic polymers

#457
20080009421
2008-01-10

Fluid loss additive for oil-based muds

#458
20070298976
2007-12-27

Surfactant materials and coatings for weighting agents for use in oil based drilling fluids

#459
20070295368
2007-12-27

Surfactant System Method

#460
20070293402
2007-12-20

Highly branched polymeric materials as coating on weighting agents

#461
20070293401
2007-12-20

Highly branched polymeric materials as surfactants for oil-based muds

#462
20070287767
2007-12-13

Non-aqueous gels for consolidating and stabilizing wellbore formations

#463
20070287640
2007-12-13

Hydrophobically modified fluid loss additives and viscosifier products

#464
20070259790
2007-11-08

Metallic soaps of modified fatty acids and rosin acids and methods of making and using same

#465
20070254815
2007-11-01

Compositions and methods for delivering an organic solvent to a downhole portion of a wellbore or to a portion of a pipeline

#466
20070244013
2007-10-18

Drilling fluid and method for reducing lost circulation

#467
20070227404
2007-10-04

Method of using high-alumina cements for rheology control of liquid phases

#468
20070219098
2007-09-20

EMULSIFIERS FOR DRILLING FLUIDS

#469
20070219097
2007-09-20

Emulsifiers For Drilling Fluids

#470
20070184988
2007-08-09

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

#471
20070167333
2007-07-19

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

#472
20070155982
2007-07-05

Organophilic clays and methods for the preparation and use thereof

#473
20070155629
2007-07-05

Organophilic clays and methods for the preparation and use thereof

#474
20070142234
2007-06-21

Borehole treatment agent containing low-toxic oil phase

#475
20070129257
2007-06-07

Method for foaming a hydrocarbon drilling fluid and for producing light weight hydrocarbon fluids

#476
20070123431
2007-05-31

Polymer hydration method using microemulsions

#477
20070111902
2007-05-17

Methods for using reversible phase oil-based drilling fluid

#478
20070105725
2007-05-10

Drilling well with drilling fluid of fluid phase and weighting agent

#479
20070105724
2007-05-10

METHOD OF USING A SIZED BARITE AS A WEIGHTING AGENT FOR DRILLING FLUIDS

#480
20070093393
2007-04-26

Emulsifier based on polyamines and fatty acid/maleic anhydride

#481
20070082824
2007-04-12

Additives for imparting fragile progressive gel structure and controlled temporary viscosity to oil based drilling fluids

#482
20070082822
2007-04-12

Invert drilling fluids for use in drilling in subterranean formations

#483
20070078062
2007-04-05

Flat rheology drilling fluids

#484
20070078061
2007-04-05

Invert drilling fluids and methods of drilling boreholes

#485
20070078060
2007-04-05

Invert drilling fluids and methods of drilling boreholes

#486
20070066795
2007-03-22

Citric acid based emulsifiers for oilfield applications exhibiting low fluorescence

#487
20070049500
2007-03-01

Borehole treating substance containing ether carboxylic acids

#488
20070027253
2007-02-01

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

#489
20060272815
2006-12-07

Invert emulsion carrier fluid and oil-wetting agent and method of using same

#490
20060258543
2006-11-16

Degradable surfactants and methods for use

#491
20060252652
2006-11-09

Oil base fluids containing hydrophilic tannins

#492
20060166840
2006-07-27

Drilling fluids containing biodegradable organophilic clay

#493
20060166835
2006-07-27

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

#494
20060160705
2006-07-20

Spotting fluid compositions and associated methods

#495
20060079407
2006-04-13

Invertible well bore servicing fluid

#496
20060073987
2006-04-06

Thinners for invert emulsions

#497
20060073986
2006-04-06

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

#498
20050277553
2005-12-15

Sized barite as a weighting agent for drilling fluids

#499
20050277552
2005-12-15

Method of drilling using a sized barite as a weighting agent for drilling fluids

#500
20050277551
2005-12-15

Method of using a sized barite as a weighting agent for drilling fluids

#501
20050250652
2005-11-10

Gelled invert emulsion compositions comprising polyvalent metal salts of an organophosphonic acid ester or an organophosphinic acid and methods of use and manufacture

#502
20050239662
2005-10-27

Drilling fluids

#503
20050209107
2005-09-22

Composition and process for the treatment of hydrogen sulfide

#504
20050202978
2005-09-15

Polymer-based, surfactant-free, emulsions and methods of use thereof

#505
20050202977
2005-09-15

Surfactant-free emulsions and methods of use thereof

#506
20050175654
2005-08-11

Fiber assisted emulsion system

#507
20050155761
2005-07-21

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

#508
20050139354
2005-06-30

Method of gravel packing with oil-based carrier fluid

#509
20050137093
2005-06-23

Metallic soaps of modified tall oil acids

#510
20050113261
2005-05-26

Process for the preparation of a homogeneous, low-viscosity and long-term-stable polymer dispersion in mineral oils

#511
20050107263
2005-05-19

Pumpable multiple phase compositions for controlled release applications downhole

#512
20050092671
2005-05-05

Apparatus for recycling of oil-based drilling fluid contaminated with water and water contaminated with oil based drilling fluid

#513
20050090405
2005-04-28

Vermiculture compositions

#514
20050067350
2005-03-31

Solid-liquid separation of oil-based muds

#515
20050067194
2005-03-31

Solid-liquid separation of oil-based muds

#516
20050049147
2005-03-03

Flat rheology drilling fluid

#517
20050037929
2005-02-17

Additive for oil-based drilling fluids

#518
20050032652
2005-02-10

Method of formulating and using a drilling mud with fragile gels

#519
20050028978
2005-02-10

Gravel packing method

#520
20050014893
2005-01-20

Tris(hydroxymethyl) acrylamidomethane polymer, inverse latex and microlatex containing same, use of said polymer, inverse latex and microlatex

#521
19367640
2026-05-26

Method of drilling wellbore into subterranean geological formation

#522
18120599
2024-05-14

Methods of designing green demulsifiers

#523
18101460
2024-03-19

Curing lost circulation of oil-based drilling muds

#524
17829877
2022-10-25

Invert emulsion drilling fluid containing hydrophobic metallic zinc nanoparticles and method of drilling subterranean geological formation

#525
17829805
2022-10-25

Rhamnolipid stabilized invert emulsion drilling fluid and method of drilling subterranean geological formation

#526
17751809
2022-11-08

Vegetable oil invert emulsion hydrogen sulfide mitigating drilling fluid and method of drilling subterranean geological formation

#527
17111649
2022-05-03

Hydrolysis reactant fluids for pulse power drilling

#528
16588429
2020-08-11

Methods to manage water influx suitable for pulsed electrical discharge drilling

#529
16508886
2020-12-08

Rheology modifier for organoclay-free invert emulsion drilling fluid systems

#530
15860831
2018-11-20

N-hydroxyalkylated polyamines, methods of making N-hydroxyalkylated polyamines, and fluids containing an N-hydroxyalkylated polyamine

#531
15732033
2019-11-05

Treatment of produced water from unconventional sources of hydrocarbons

#532
15643639
2020-04-21

Additive for drilling fluids

#533
14878808
2016-06-14

Copolymer of dimer acid-organic amine and shear strength improving agent of water in oil emulsion drilling fluid and drilling fluid