ClassID:

104256

C09K8/032 - 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; Specific additives for general use in well-drilling compositions Inorganic additives

Recent Application in this class:
#301
20130341022
2013-12-26

Methods of Using Nanoparticle Suspension Aids in Subterranean Operations

#302
20130255944
2013-10-03

Hydrated sheet silicate minerals for reducing permeability in a well

#303
20130213638
2013-08-22

Methods of using nano-particles in wellbore operations

#304
20130168095
2013-07-04

Iodide stabilizer for viscosified fluid containing iron

#305
20130125677
2013-05-23

Classification scheme of sized bridging materials for superior drill-in fluid design

#306
20130098615
2013-04-25

NOVEL HIGH DENSITY BRINES FOR COMPLETION APPLICATIONS

#307
20130092377
2013-04-18

Use of a chopper mechanism to add fibers to a well

#308
20130079258
2013-03-28

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

#309
20130048286
2013-02-28

Methods for determining reactive index for cement kiln dust, associated compositions, and methods of use

#310
20130008352
2013-01-10

Methods and compositions comprising cement kiln dust having an altered particle size

#311
20120322694
2012-12-20

Electrically Conductive Oil-Base Fluids for Oil and Gas Applications

#312
20120305248
2012-12-06

Drilling fluid that when mixed with a cement composition enhances physical properties of the cement composition

#313
20120295821
2012-11-22

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

#314
20120277125
2012-11-01

Masterbatch for manufacturing a drilling fluid

#315
20120277124
2012-11-01

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

#316
20120267102
2012-10-25

Nano-Sized Particles for Formation Fines Fixation

#317
20120245058
2012-09-27

Graphene-Containing Fluids for Oil and Gas Exploration and Production

#318
20120244228
2012-09-27

Chlorine dioxide precursor and methods of using same

#319
20120227631
2012-09-13

Methods and compositions comprising cement kiln dust having an altered particle size

#320
20120211227
2012-08-23

Well treatment compositions and methods utilizing nano-particles

#321
20120202718
2012-08-09

Precipitated weighting agents for use in wellbore fluids

#322
20120196777
2012-08-02

Variable Pressure Weighting Material Particles

#323
20120190598
2012-07-26

Metallic nanoparticle biocide in industrial applications

#324
20120178651
2012-07-12

Clay Stabilization With Nanoparticles

#325
20120145393
2012-06-14

Methods and compositions comprising cement kiln dust having an altered particle size

#326
20120138303
2012-06-07

Methods of providing fluid loss control or diversion

#327
20120129736
2012-05-24

Highly oxidized graphene oxide and methods for production thereof

#328
20120073813
2012-03-29

Weight materials for use in cement, spacer and drilling fluids

#329
20120071371
2012-03-22

Aqueous particulate slurry compositions and methods of making same

#330
20120015852
2012-01-19

Nanofluids and methods of use for drilling and completion fluids

#331
20110297375
2011-12-08

Composition for borehole treatment

#332
20110272156
2011-11-10

Hydraulic fracturing

#333
20110232908
2011-09-29

ADDITIVE AND METHOD FOR SERVICING SUBTERRANEAN WELLS

#334
20110144386
2011-06-16

Graphene compositions and methods for production thereof

#335
20110124531
2011-05-26

Composition of Specifically Formulated Phosphate Salts, Used for Increasing Density of Completion Fluids, and as a Hi-Temperature and Easy to Use Completion Fluids in the Oil and Gas Industry

#336
20110059871
2011-03-10

Graphene compositions and drilling fluids derived therefrom

#337
20110056683
2011-03-10

Wellbore fluid comprising a base fluid and a particulate bridging agent

#338
20110042078
2011-02-24

Viscosity reducer for water-based muds

#339
20110000672
2011-01-06

Clay Stabilization with Nanoparticles

#340
20100230169
2010-09-16

COMPOSITIONS AND METHODS FOR INHIBITING LOST CIRCULATION DURING WELL OPERATIONS

#341
20100230164
2010-09-16

COMPOSITIONS AND METHODS FOR INHIBITING LOST CIRCULATION DURING WELL OPERATION

#342
20100204071
2010-08-12

Aqueous particulate slurry compositions and methods of making same

#343
20100152067
2010-06-17

Friction modifier for drilling fluids

#344
20100096135
2010-04-22

Well treatment compositions and methods utilizing nano-particles

#345
20100009874
2010-01-14

Precipitated weighting agents for use in wellbore fluids

#346
20090314549
2009-12-24

Maintaining shale stability by pore plugging

#347
20090308611
2009-12-17

Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same

#348
20090275487
2009-11-05

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

#349
20090260544
2009-10-22

Well treatment compositions and methods utilizing nano-particles

#350
20090258800
2009-10-15

Methods for minimizing the amount of graphite particles used during drilling operations

#351
20090258799
2009-10-15

WELLBORE FLUIDS POSSESSING IMPROVED RHEOLOGICAL AND ANTI-SAG PROPERTIES

#352
20090192052
2009-07-30

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

#353
20090186781
2009-07-23

Drilling fluids comprising sub-micron precipitated barite as a component of the weighting agent and associated methods

#354
20090163388
2009-06-25

Variable density treatment fluids

#355
20090124521
2009-05-14

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

#356
20090087912
2009-04-02

TAGGED PARTICLES FOR DOWNHOLE APPLICATION

#357
20090075847
2009-03-19

DRILLING FLUID LUBRICANT AND METHOD OF USE

#358
20090008095
2009-01-08

Wellbore fluid comprising a base fluid and a particulate bridging agent

#359
20090005271
2009-01-01

Reduced abrasiveness with micronized weighting material

#360
20080277116
2008-11-13

Well treatment composition and methods utilizing nano-particles

#361
20080245527
2008-10-09

Use of a chopper mechanism to add fibers to a well

#362
20080190614
2008-08-14

Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations

#363
20080115937
2008-05-22

Servicing a wellbore with wellbore fluids comprising perlite

#364
20080064613
2008-03-13

DISPERSANT COATED WEIGHTING AGENTS

#365
20080003128
2008-01-03

Granules of powdery mineral and method for production of granules

#366
20070287637
2007-12-13

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

#367
20070184987
2007-08-09

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

#368
20070167333
2007-07-19

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

#369
20070114036
2007-05-24

Silicate-containing additives for well bore treatments and associated methods

#370
20070105725
2007-05-10

Drilling well with drilling fluid of fluid phase and weighting agent

#371
20070105724
2007-05-10

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

#372
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

#373
20060258547
2006-11-16

Zeolite-containing remedial compositions

#374
20060254775
2006-11-16

Variable density treatment fluids

#375
20060213663
2006-09-28

Methods of using wellbore servicing fluids comprising resilient material

#376
20060188651
2006-08-24

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

#377
20060175060
2006-08-10

Servicing a wellbore with wellbore fluids comprising perlite

#378
20060169809
2006-08-03

Method and system for harvesting weighting agent fines

#379
20060148656
2006-07-06

Silicate-containing additives for well bore treatments and associated methods

#380
20060144594
2006-07-06

Silicate-containing additives for well bore treatments and associated methods

#381
20060127301
2006-06-15

Process for the preparation of cabr2 hydrates and uses thereof

#382
20060122070
2006-06-08

Drilling fluid systems comprising sized graphite particles

#383
20050277553
2005-12-15

Sized barite as a weighting agent for drilling fluids

#384
20050277552
2005-12-15

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

#385
20050277551
2005-12-15

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

#386
20050173117
2005-08-11

Use of substantially hydrated cement particulates in drilling and subterranean applications

#387
20050124499
2005-06-09

Drilling fluid containing microspheres and use thereof

#388
20050072599
2005-04-07

Zeolite-containing remedial compositions

#389
20050016772
2005-01-27

Method of drilling a borehole into an earth formation

#390
18966737
2025-08-26

Method for treating a well bore to remove hydrogen sulfide

#391
18792758
2025-01-14

Process for removing hydrogen sulfide from subterranean geological formations with a layered triple hydroxide material in a water-based drilling fluid

#392
17705914
2023-08-22

Thermochemical soap stick for well lifting and deliquification

#393
17505362
2022-05-31

Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof

#394
16599308
2020-09-29

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

#395
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

#396
15643639
2020-04-21

Additive for drilling fluids

#397
15584669
2018-08-21

Plugging and sealing subterranean formations

#398
14860411
2016-02-23

Protecting agent composition for high/ultra-high permeability reservoirs and drilling fluid and use thereof

#399
14668712
2017-06-20

Additive for drilling fluid used as a sealing agent to reduce seepage loss and fluid loss in subterranean wellbores