ClassID:

104987

C09K2208/12 - page 2 - CPC Classification

Classification description:

Aspects relating to compositions of drilling or well treatment fluids Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating

Recent Application in this class:
#301
20120040873
2012-02-16

Glycerol based drilling fluids

#302
20120015852
2012-01-19

Nanofluids and methods of use for drilling and completion fluids

#303
20110275545
2011-11-10

Drilling fluid additive system

#304
20110269652
2011-11-03

GEMINI SURFACTANTS

#305
20110259588
2011-10-27

METHODS OF STABILIZING SHALE SURFACE TO MINIMIZE PROPPANT EMBEDMENT AND INCREASE PROPPANT-PACK CONDUCTIVITY

#306
20110190171
2011-08-04

Low toxicity shale hydration inhibition agent and method of use

#307
20110092396
2011-04-21

Copolymer for shale stabilization and method of use

#308
20110086783
2011-04-14

Air drilling misting fluid contains syrups

#309
20110061866
2011-03-17

Low conductivity water based wellbore fluid

#310
20110000672
2011-01-06

Clay Stabilization with Nanoparticles

#311
20100331221
2010-12-30

Drilling fluid additive containing heated syrup solids

#312
20100305010
2010-12-02

HIGH DENSITY PHOSPHATE BRINES AND METHODS FOR MAKING AND USING SAME

#313
20100267592
2010-10-21

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

#314
20100256020
2010-10-07

Aqueous-based wellbore fluids

#315
20100256019
2010-10-07

Aqueous-based wellbore fluids

#316
20100222241
2010-09-02

Clay Inhibitors for the Drilling Industry

#317
20100210484
2010-08-19

Clay control additive for wellbore fluids

#318
20100144561
2010-06-10

SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE

#319
20100096130
2010-04-22

Toe-to-heel gravel packing methods

#320
20100089650
2010-04-15

Drilling fluid and method for drilling in coal-containing formations

#321
20100065269
2010-03-18

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

#322
20090314549
2009-12-24

Maintaining shale stability by pore plugging

#323
20090312204
2009-12-17

Fines migration control at their sources in water reservoirs

#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
20090247429
2009-10-01

Shale hydration inhibition agent(s) and method of use

#327
20090239771
2009-09-24

Swelling Inhibitors for Clays and Shales

#328
20090175688
2009-07-09

Shale hydration inhibition agent and method of use

#329
20090143254
2009-06-04

Glycerol based drilling fluids

#330
20090131287
2009-05-21

Inhibiting hydration of shale using a polyol and potassium formate

#331
20090131280
2009-05-21

Swelling Inhibitors for Clays and Shales

#332
20090071653
2009-03-19

COMPOSITION AND METHOD FOR CLEANING FORMATION FACES

#333
20090065207
2009-03-12

Well treatment to inhibit fines migration

#334
20090036330
2009-02-05

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

#335
20090029880
2009-01-29

Method of using ionic liquids to inhibit or prevent the swelling of clay

#336
20080227671
2008-09-18

Low toxicity shale hydration inhibition agent and method of use

#337
20080132711
2008-06-05

High molecular weight polyamine salts as clay stabilizing agents

#338
20080108523
2008-05-08

Polyamine salts as clay stabilizing agents

#339
20080076681
2008-03-27

Shale hydration inhibition agent and method of use

#340
20080045420
2008-02-21

Zwitterionic Polymers Comprising Betaine-Type Units And Use Of Zwitterionic Polymers In Drilling Fluids

#341
20080039345
2008-02-14

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

#342
20080009422
2008-01-10

HIGH PERFORMANCE WATER BASE DRILLING FLUID

#343
20070261849
2007-11-15

Servicing a wellbore with an aqueous based fluid comprising a clay inhibitor

#344
20070207932
2007-09-06

Clay inhibitors for the drilling industry

#345
20070173414
2007-07-26

Well drilling fluids having clay control properties

#346
20070129258
2007-06-07

High performance water-based drilling mud and method of use

#347
20070111895
2007-05-17

Subterranean treatment fluids comprising polyoxazoline compositions and methods of use in subterranean formations

#348
20070105723
2007-05-10

Shale inhibition

#349
20070082823
2007-04-12

High performance water-based drilling mud and method of use

#350
20060289164
2006-12-28

Clay control additive for wellbore fluids

#351
20060254772
2006-11-16

High molecular weight polyamine salts as clay stabilizing agents

#352
20060194700
2006-08-31

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

#353
20060166833
2006-07-27

Additive for drilling fluids

#354
20060116296
2006-06-01

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

#355
20060073985
2006-04-06

Shale hydration inhibition agent and method of use

#356
20060073984
2006-04-06

Shale hydration inhibition agent and method of use

#357
20060073983
2006-04-06

Shale hydration inhibition agent and method of use

#358
20060073982
2006-04-06

Shale hydration inhibition agent and method of use

#359
20060032632
2006-02-16

Subterranean treatment fluids comprising polyoxazoline compositions and methods of use in subterranean formations

#360
20050256012
2005-11-17

Well drilling fluids

#361
20050215439
2005-09-29

Clay stabilization in sub-surface formations

#362
20050126782
2005-06-16

Polyamine salts as clay stabilizing agents

#363
20050096232
2005-05-05

High performance water based drilling fluids and method of use

#364
20050049150
2005-03-03

Shale hydration inhibition agent and method of use

#365
20050049149
2005-03-03

High performance water-based drilling mud and method of use

#366
20050043187
2005-02-24

Anti-accretion additives for drilling fluids

#367
19204000
2026-03-31

Amphoteric amphiphiles for shale swelling inhibition in oil and gas reservoirs

#368
18919619
2025-09-02

Compositions and methods for increasing permeability in hydrocarbon shale formations

#369
18828877
2026-02-10

Biopolymer shale inhibitors and methods of making and using same

#370
18812507
2025-10-07

Combination clay stabilizer having an alkali metal asphalt sulfonate and quaternary ammonium salt

#371
18768521
2024-12-24

Compositions and methods for increasing permeability in hydrocarbon shale formations

#372
18768483
2024-11-12

Compositions and methods for inhibiting clay swelling in hydrocarbon shale formations

#373
18664209
2025-11-18

Metal oxide nanoshale inhibitors for water-based drilling fluids

#374
18606478
2024-10-15

Method of making drilling fluid composition with functionalized carbon

#375
18606365
2024-07-16

Method of drilling hydrocarbon bearing geological formation with horizontal wellbore

#376
18352214
2023-12-19

Structural stabilizer for fiber and conventional proppant complex in efficient proppant migration and placement technology of fractured well and preparation method

#377
18339274
2024-11-19

Method of enhancing oil recovery using citric acid-based additive

#378
18315542
2024-05-14

Drilling fluid composition and method of making the composition

#379
18181711
2024-05-14

Date palm leaves extract (DPLE) as a shale swelling inhibitor in water-based drilling fluids

#380
17315971
2022-07-12

One-component type multi-functional fracturing fluid additive and process for preparing the same

#381
16257870
2019-06-04

Super-amphiphobic composite material and use of the same as inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids

#382
16043595
2019-05-14

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

#383
15952880
2019-03-19

Drilling fluid for inhibiting surface hydration of clay and preparation method thereof

#384
15489457
2017-10-10

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

#385
15489193
2017-10-17

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

#386
15488941
2017-10-10

Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells

#387
15459460
2018-08-14

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

#388
14668530
2017-01-24

Additive for drilling fluid used as a shale stabilizing agent in subterranean wellbores