ClassID:

104257

C09K8/035 - page 5 - 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; Specific additives for general use in well-drilling compositions Organic additives

Recent Application in this class:
#1201
20070281870
2007-12-06

Stimuli-degradable gels

#1202
20070277981
2007-12-06

Stimuli-degradable gels

#1203
20070244014
2007-10-18

Subterranean treatment fluids with improved fluid loss control

#1204
20070244013
2007-10-18

Drilling fluid and method for reducing lost circulation

#1205
20070213230
2007-09-13

Fast dissolving hydroxyalkyl guar derivatives

#1206
20070184988
2007-08-09

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

#1207
20070184987
2007-08-09

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

#1208
20070167333
2007-07-19

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

#1209
20070135313
2007-06-14

Water-based polymers for use as friction reducers in aqueous treatment fluids

#1210
20070135312
2007-06-14

Solvent free fluidized polymer suspensions for oilfield servicing fluids

#1211
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

#1212
20070111895
2007-05-17

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

#1213
20070100102
2007-05-03

COPOLYMER BASED ON OLEFINIC SULPHONIC ACIDS

#1214
20070088100
2007-04-19

Superabsorbent polymer aqueous paste and coating

#1215
20070066493
2007-03-22

Orthoester-based surfactants and associated methods

#1216
20070066492
2007-03-22

Orthoester-based surfactants and associated methods

#1217
20070066491
2007-03-22

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

#1218
20070062698
2007-03-22

Fluid with asphaltene control

#1219
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

#1220
20070054968
2007-03-08

Environmentally friendly defoamer

#1221
20070031370
2007-02-08

Amine N-oxide based surfactants

#1222
20070029085
2007-02-08

Prevention of Water and Condensate Blocks in Wells

#1223
20070021309
2007-01-25

Thermoset particles with enhanced crosslinking, processing for their production, and their use in oil and natural gas driliing applications

#1224
20070021307
2007-01-25

Downhole drilling compositions and methods of preparation

#1225
20070004915
2007-01-04

Process for obtaining hydroxypropylstarch (HPS) for use in the treatment of drilling wells

#1226
20060293196
2006-12-28

Bi-or multi-modal particle size distribution to improve drag reduction polymer dissolution

#1227
20060293192
2006-12-28

Lubricants for drilling fluids and methods for using the same

#1228
20060289164
2006-12-28

Clay control additive for wellbore fluids

#1229
20060270562
2006-11-30

Drilling fluids with redispersible polymer powders

#1230
20060258544
2006-11-16

Degradable surfactants and methods for use

#1231
20060254775
2006-11-16

Variable density treatment fluids

#1232
20060254772
2006-11-16

High molecular weight polyamine salts as clay stabilizing agents

#1233
20060240994
2006-10-26

Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation

#1234
20060234874
2006-10-19

Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation

#1235
20060188651
2006-08-24

Additive for increasing the density of a fluid for casing annulus pressure

#1236
20060172895
2006-08-03

Degradable particulate generation and associated methods

#1237
20060172894
2006-08-03

Degradable particulate generation and associated methods

#1238
20060169450
2006-08-03

Degradable particulate generation and associated methods

#1239
20060166833
2006-07-27

Additive for drilling fluids

#1240
20060157247
2006-07-20

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

#1241
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

#1242
20060111521
2006-05-25

Silicone resin for drilling fluid loss control

#1243
20060079408
2006-04-13

Composition for decreasing lost circulation during well operation

#1244
20060068994
2006-03-30

Fast hydrating guar powder, method of preparation, and methods of use

#1245
20060032632
2006-02-16

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

#1246
20060020145
2006-01-26

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

#1247
20060018968
2006-01-26

Use of polyethylene glycol based fluidized polymer suspension in functional systems

#1248
20050217852
2005-10-06

Method of sealing subterranean zones

#1249
20050209107
2005-09-22

Composition and process for the treatment of hydrogen sulfide

#1250
20050199428
2005-09-15

Drilling fluids

#1251
20050197255
2005-09-08

Method for lubricating and/or reducing corrosion of drilling equipment

#1252
20050178546
2005-08-18

Well bore servicing fluids comprising thermally activated viscosification compounds and methods of using the same

#1253
20050155796
2005-07-21

Permeability-modifying drilling fluids and methods of use

#1254
20050155761
2005-07-21

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

#1255
20050126782
2005-06-16

Polyamine salts as clay stabilizing agents

#1256
20050124525
2005-06-09

Anionic viscoelastic surfactant

#1257
20050113260
2005-05-26

Drilling fluids

#1258
20050107263
2005-05-19

Pumpable multiple phase compositions for controlled release applications downhole

#1259
20050080182
2005-04-14

Superabsorbent polymer aqueous paste and coating

#1260
20050037929
2005-02-17

Additive for oil-based drilling fluids

#1261
18828877
2026-02-10

Biopolymer shale inhibitors and methods of making and using same

#1262
18768483
2024-11-12

Compositions and methods for inhibiting clay swelling in hydrocarbon shale formations

#1263
18360426
2024-08-20

Bistable system for the controlled release of corrosion inhibitors

#1264
18057850
2024-01-23

Lost circulation material package with tailored particle size distribution

#1265
17959542
2023-06-13

Unfoldable device for controlling loss circulation

#1266
17949481
2023-12-19

Covalent organic frameworks as tracers for fluorescent upstream imaging

#1267
17877417
2023-10-24

Methods of forming hydrophobic surfaces for enhancing performance of geothermal operations

#1268
17866046
2023-05-02

Nanometer self-locking bentonite film-forming agent, method for preparing the same, and film-forming drilling fluid

#1269
17568193
2022-10-18

Drag reducing agent containing a great amount of an active base

#1270
17546417
2023-01-03

Wellbore servicing fluids and methods for controlling fluid losses in permeable zones

#1271
17450624
2022-11-08

Sand consolidation with a curable resin and filtercake removal fluid

#1272
17444758
2023-01-10

Citrate polyester additives for crude oil, mixtures of said additives and crude oil, and methods for producing said mixtures

#1273
17111649
2022-05-03

Hydrolysis reactant fluids for pulse power drilling

#1274
16887869
2021-01-12

Modified polyhistidine suitable for being used as a supramolecular shale inhibitor, method of preparing the same and its application in water-based drilling fluids

#1275
16842469
2021-06-22

Composition and method of manufacturing of whole and ground date palm seed lost circulation material (LCM)

#1276
16682966
2021-01-12

Composition and method of manufacturing of whole date palm seed lost circulation material (LCM)

#1277
16599308
2020-09-29

Graphene oxide coated membranes to increase the density of water base fluids

#1278
16266605
2019-06-18

Hybrid particle mix for seal and plug quality enhancement

#1279
16262386
2019-06-25

Hybrid particle mix for seal and plug quality enhancement

#1280
15889668
2019-04-23

ARC hybrid particle mix for seal and plug quality enhancement

#1281
15643639
2020-04-21

Additive for drilling fluids

#1282
15584669
2018-08-21

Plugging and sealing subterranean formations

#1283
15489457
2017-10-10

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

#1284
15489210
2017-10-17

Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells

#1285
15489193
2017-10-17

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

#1286
15466032
2017-08-29

Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof

#1287
15136504
2016-11-01

Drilling fluid additive composition and high temperature resistant clay-free whole-oil-based drilling fluid

#1288
15136496
2016-12-27

Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid

#1289
14668530
2017-01-24

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

#1290
13494743
2016-03-22

Wood-based loss circulation material and method for manufacturing same