ClassID:

104361

C09K8/92 - 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; Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material

Recent Application in this class:
#301
20140045731
2014-02-13

Equipment for preparing curved fibers

#302
20130341023
2013-12-26

Use of metal silicides in hydrocarbon production and transportation

#303
20130225729
2013-08-29

Thermoset particles with enhanced crosslinking, production, and their use in oil and natural gas drilling applications

#304
20130220608
2013-08-29

MODIFIED PARTICULATE WEIGHTING AGENTS AND METHODS OF USING THE SAME

#305
20130206413
2013-08-15

Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir

#306
20130165352
2013-06-27

Well treatment fluid compositions and methods of use that include a delayed release percarbonate formulation

#307
20130140030
2013-06-06

Apparatus and method for dispensing chemicals into a well

#308
20130112413
2013-05-09

Controlled release breaker composition for oil field applications

#309
20130092377
2013-04-18

Use of a chopper mechanism to add fibers to a well

#310
20130085087
2013-04-04

Pyromellitamide gelling agents

#311
20130056215
2013-03-07

Disintegrative Particles to Release Agglomeration Agent for Water Shut-Off Downhole

#312
20130045897
2013-02-21

Amphiphilic nanoparticle, composition comprising same and method of controlling oil spill using amphiphilic nanoparticle

#313
20130023448
2013-01-24

Methods for Treating Hydrocarbon-Servicing Fluids and Wastewater and Fluids Produced Using the Same

#314
20120329683
2012-12-27

DEGRADABLE FIBER SYSTEMS FOR WELL TREATMENTS AND THEIR USE

#315
20120325471
2012-12-27

ENCAPSULATED MATERIALS AND THEIR USE IN OIL AND GAS WELLS

#316
20120285695
2012-11-15

DESTRUCTIBLE CONTAINERS FOR DOWNHOLE MATERIAL AND CHEMICAL DELIVERY

#317
20120285693
2012-11-15

Controlled release biocides in oilfield applications

#318
20120222863
2012-09-06

Alkanesulfonic acid microcapsules and use thereof in deep wells

#319
20120199347
2012-08-09

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

#320
20120184469
2012-07-19

Stimulated Liquid-Sensitive Subterranean Formations

#321
20120175120
2012-07-12

METHOD FOR INTERVENTION OPERATIONS IN SUBSURFACE HYDROCARBON FORMATIONS

#322
20120168165
2012-07-05

METHOD FOR INTERVENTION OPERATIONS IN SUBSURFACE HYDROCARBON FORMATIONS

#323
20120157356
2012-06-21

Hydraulic fracturing with slick water from dry blends

#324
20120129734
2012-05-24

Use of hydrophobically associated copolymer as an additive in specific oilfield applications

#325
20120111563
2012-05-10

METHODS TO DELIVER FLUIDS ON A WELL SITE WITH VARIABLE SOLIDS CONCENTRATION FROM SOLID SLURRIES

#326
20120048557
2012-03-01

Delivery of particulate material below ground

#327
20120048548
2012-03-01

Use of nano-sized phyllosilicate minerals in viscoelastic surfactant fluids

#328
20120043086
2012-02-23

Zero-leakoff emulsified acid

#329
20120037368
2012-02-16

CONTROLLED RELEASE PROPPANT

#330
20120037364
2012-02-16

Delayed gelling agents

#331
20120024530
2012-02-02

Increasing fracture complexity in ultra-low permeable subterranean formation using degradable particulate

#332
20110315384
2011-12-29

GELLED FOAM COMPOSITIONS AND METHODS

#333
20110278008
2011-11-17

WELL TREATMENT FLUID COMPOSITIONS AND METHODS OF USE THAT INCLUDE A DELAYED RELEASE PERCARBONATE FORMULATION

#334
20110237465
2011-09-29

Release of Chemical Systems for Oilfield Applications by Stress Activation

#335
20110214862
2011-09-08

PARTICULATE BRIDGING AGENTS USED FOR FORMING AND BREAKING FILTERCAKES ON WELLBORES

#336
20110203797
2011-08-25

Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir

#337
20110168395
2011-07-14

Methods of Fluid Loss Control and Fluid Diversion in Subterranean Formations

#338
20110136703
2011-06-09

Compositions for Stimulating Liquid-Sensitive Subterranean Formations

#339
20110082058
2011-04-07

Method for preparing curved fibers

#340
20110077445
2011-03-31

Generating natural gas from heavy hydrocarbons

#341
20110036582
2011-02-17

Solid incorporated reversible emulsion for a fracturing fluid

#342
20110028593
2011-02-03

Weighted elastomers, cement compositions comprising weighted elastomers, and methods of use

#343
20110028358
2011-02-03

Methods of Fluid Loss Control and Fluid Diversion in Subterranean Formations

#344
20100323929
2010-12-23

Methods for treating a well with a cross-linked water-soluble polymer-complexed metal cation network and an aromatic compound capable of forming a chelating agent to uncross-link the polymer

#345
20100288500
2010-11-18

Fiber aggregate

#346
20100248998
2010-09-30

Process for the production of a granule of a coated oxidizing compound such granule and uses of the granule

#347
20100200234
2010-08-12

In situ conversion of heavy hydrocarbons to catalytic gas

#348
20100197526
2010-08-05

Method for making particulate slurries and particulate slurry compositions

#349
20100193191
2010-08-05

Methods and compositions comprising a dual oil/water-swellable particle

#350
20100096139
2010-04-22

Method for Intervention Operations in Subsurface Hydrocarbon Formations

#351
20100056399
2010-03-04

Polyelectrolyte complexes for oil and gas applications

#352
20090095472
2009-04-16

Well treatment fluid compositions and methods of use that include a delayed release percarbonate formulation

#353
20090038855
2009-02-12

Variable density fluids and methods of use in subterranean formations

#354
20090014179
2009-01-15

In situ conversion of heavy hydrocarbons to catalytic gas

#355
20080248308
2008-10-09

Method of making graphite-coated particulate materials

#356
20080245527
2008-10-09

Use of a chopper mechanism to add fibers to a well

#357
20080128135
2008-06-05

DEHYDRATING TREATMENT OF OIL AND GAS WELLS

#358
20080115935
2008-05-22

IN SITU CONVERSION OF HEAVY HYDROCARBONS TO CATALYTIC GAS

#359
20080113879
2008-05-15

Lost circulation additive for drilling fluids

#360
20080058229
2008-03-06

Polyelectrolyte complexes for oil and gas applications

#361
20080011486
2008-01-17

BIODEGRADABLE FOAM COMPOSITIONS FOR OIL FIELD OPERATIONS

#362
20070238623
2007-10-11

Degradable particulates as friction reducers for the flow of solid particulates and associated methods of use

#363
20070204996
2007-09-06

Treatment fluids comprising friction reducers and antiflocculation additives and associated methods

#364
20070155630
2007-07-05

Compositions for stimulating liquid-sensitive subterranean formations

#365
20070151729
2007-07-05

Methods of stimulating liquid-sensitive subterranean formations

#366
20070054121
2007-03-08

Graphite-coated particulate materials

#367
20070021309
2007-01-25

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

#368
20060234870
2006-10-19

Methods and compositions for delaying the release of treatment chemicals

#369
20060229213
2006-10-12

Fluids comprising zirconium isopropylamine crosslinking agents and associated methods

#370
20060218905
2006-10-05

Method and system for obtaining exhaust gas for use in augmenting crude oil production

#371
20060166838
2006-07-27

Method of preparing microparticles

#372
20060142166
2006-06-29

Method using particulate chelates to stimulate production of petroleum in carbonate formations

#373
20060124302
2006-06-15

Well treating compositions for slow release of treatment agents and methods of using the same

#374
20060124301
2006-06-15

Method of inhibiting or controlling formation of inorganic scales

#375
20050202978
2005-09-15

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

#376
20050202977
2005-09-15

Surfactant-free emulsions and methods of use thereof

#377
20050159559
2005-07-21

Method for scale inhibition in oil wells

#378
20050130845
2005-06-16

Method and composition for the triggered release of polymer-degrading agents for oil field use

#379
20050113262
2005-05-26

Methods of drilling wellbores using variable density fluids comprising coated elastic particles

#380
18338816
2024-02-27

Encapsulated polymer flooding method and system for enhancing oil recovery

#381
16599308
2020-09-29

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