ClassID:

104347

C09K8/76 - 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; Compositions for forming crevices or fractures; Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing or reducing fluid loss

Recent Application in this class:
#1
20260071114
2026-03-12

SINGLE-PHASE RETARDED ACID BASED ON A CATIONIC SURFACTANT

#2
20250320405
2025-10-16

GELLED ACID COMPOSITIONS AND METHODS FOR ACID STIMULATION IN CARBONATE FORMATIONS

#3
20250243400
2025-07-31

FERRATE(VI)-BASED HYDRAULIC FRACTURING FLUID FOR CARBON DIOXIDE SEQUESTRATION AND METHODS RELATED THERETO

#4
20250163315
2025-05-22

MATERIALS AND COMPOSITIONS FOR RESERVOIR STIMULATION TREATMENT

#5
20250075123
2025-03-06

SINGLE-PHASE RETARDED ACID BASED ON A CATIONIC SURFACTANT

#6
20250002775
2025-01-02

METHOD TO USE LOSS CIRCULATION MATERIAL COMPOSITION COMPRISING ACIDIC NANOPARTICLE-BASED DISPERSION AND FORMATE BASED ACTIVATOR IN DOWNHOLE CONDITIONS

#7
20240318070
2024-09-26

Ferrate(VI)-based hydraulic fracturing fluid for carbon dioxide sequestration and methods related thereto

#8
20240067861
2024-02-29

METHODS AND COMPOSITIONS OF SYNTHETIC QUADRIPOLYMER BASED DIVERSION FLUIDS

#9
20220025752
2022-01-27

Thermally activated strong acids

#10
20210403800
2021-12-30

ANTI-CAKING OR BLOCKING AGENT FOR TREATING SOLID ACID PRECURSOR ADDITIVES USED IN TREATING SUBTERRANEAN FORMATIONS

#11
20210292639
2021-09-23

Method of acidizing a subterranean formation comprising a gelling agent

#12
20210131252
2021-05-06

FRACTURING A FORMATION WITH MORTAR SLURRY

#13
20210115760
2021-04-22

Methods for increasing wellbore strength

#14
20210115326
2021-04-22

Salt of monochloroacetic acid with chelating agent for delayed acidification in the oil field industry

#15
20210095189
2021-04-01

Settable, removable, and reusable lost circulation fluids

#16
20210062075
2021-03-04

Compositions and methods for acid diversion during acid stimulation of subterranean formations

#17
20210062074
2021-03-04

Diversion using solid particulates

#18
20210017445
2021-01-21

Carbonate reservoir filtration-loss self-reducing acid

#19
20200317995
2020-10-08

Methods, treatment fluids and systems for differential acidizing of a siliceous material

#20
20200102492
2020-04-02

Nanosized particulates for downhole applications

#21
20200095492
2020-03-26

Leak-off control in acid stimulation using dissolvable material

#22
20200002603
2020-01-02

Acid diversion in naturally fractured formations

#23
20190322924
2019-10-24

Treatment fluids for stimulation of subterranean formations

#24
20190256766
2019-08-22

Method of acidizing a subterranean formation comprising a gelling agent

#25
20190233719
2019-08-01

Polylactic acid/acid-soluble hard particulate blends as degradable diverting agents

#26
20190145223
2019-05-16

Methods for increasing wellbore strength

#27
20190106615
2019-04-11

CONTROLLING PRODUCTION OF WATER IN SUBTERRANEAN FORMATIONS

#28
20190048246
2019-02-14

AQUEOUS AMPHOLYTE POLYMER CONTAINING SOLUTIONS FOR SUBTERRANEAN APPLICATIONS

#29
20180347332
2018-12-06

Method of Enhancing Fracture Complexity Using Far-Field Divert Systems

#30
20180328147
2018-11-15

Fracturing fluids and methods of treating hydrocarbon formations

#31
20180306006
2018-10-25

Methods of using superabsorbent polymers for fracturing and sand control applications

#32
20180251673
2018-09-06

Methods, treatment fluids and systems for differential acidizing of a siliceous material

#33
20180202278
2018-07-19

Method of using diverter and proppant mixture

#34
20170275527
2017-09-28

Composition and method for improved treatment fluid

#35
20170198190
2017-07-13

Diverter composition including rheologically-modified invert emulsion and method of use

#36
20170051599
2017-02-23

Method of enhancing fracture complexity using far-field divert systems

#37
20170002623
2017-01-05

Well treatment

#38
20160339624
2016-11-24

Equipment and Methods for Preparing Curved Fibers

#39
20160289549
2016-10-06

Fracturing fluids and methods of treating hydrocarbon formations

#40
20160289547
2016-10-06

Methods of using superabsorbent polymers for fracturing and sand control applications

#41
20160289541
2016-10-06

Use of superabsorbent polymers for pressure control and diversion applications

#42
20160289530
2016-10-06

Drilling fluids with leakoff control and drill cuttings removal sweeps

#43
20160222275
2016-08-04

Wellbore fluid additives of fibrillated fibers and methods of use

#44
20160160108
2016-06-09

Solids-free diverting agents and methods related thereto

#45
20160138376
2016-05-19

Flowing fracturing fluids to subterranean zones

#46
20160009982
2016-01-14

Use of nano-sized phyllosilicate minerals in viscoelastic surfactant fluids

#47
20160009977
2016-01-14

DELAYED ENHANCEMENT OR BREAKING OF VISCOSITY FOR VISCOELASTIC SURFACTANT CONTAINING WELLBORE FLUIDS

#48
20150080271
2015-03-19

Foam or viscosified composition containing a chelating agent

#49
20150068749
2015-03-12

Method, apparatus, and composition for increased recovery of hydrocarbons by paraffin and asphaltene control from reaction of fuels and selective oxidizers in the subterranean environment

#50
20150041132
2015-02-12

Method of using diverter and proppant mixture

#51
20140367108
2014-12-18

Acidizing compositions including ampholyte polymers

#52
20140352962
2014-12-04

Ampholyte polymeric compounds in subterranean applications

#53
20140352960
2014-12-04

Ampholyte polymeric compounds in subterranean applications

#54
20140352959
2014-12-04

Diverting systems for use in low temperature well treatment operations

#55
20140116707
2014-05-01

In-situ crosslinking and calcium ion complexation for acidizing a subterranean formation

#56
20140090844
2014-04-03

Swellable elastomer and its use in acidizing or matrix stimulation

#57
20140069645
2014-03-13

Methods to deliver fluids on a well site with variable solids concentration from solid slurries

#58
20130292116
2013-11-07

Methods for Controlling Formation Fines Migration

#59
20130264055
2013-10-10

System and method for low damage fracturing

#60
20130213638
2013-08-22

Methods of using nano-particles in wellbore operations

#61
20120234543
2012-09-20

Organic acid compositions and methods of use in subterranean operations

#62
20120214715
2012-08-23

Degradable perforation balls and associated methods of use in subterranean applications

#63
20120208729
2012-08-16

Polymeric acid precursor compositions and methods

#64
20120142562
2012-06-07

ORGANIC SALTS FOR REDUCING STONE PERMEABLITIES

#65
20120048548
2012-03-01

Use of nano-sized phyllosilicate minerals in viscoelastic surfactant fluids

#66
20120043085
2012-02-23

WELLBORE SERVICE FLUID AND METHODS OF USE

#67
20110082058
2011-04-07

Method for preparing curved fibers

#68
20110079392
2011-04-07

Additives to suppress silica scale build-up and methods of use thereof

#69
20110048718
2011-03-03

Treatment fluids comprising entangled equilibrium polymer networks

#70
20110036582
2011-02-17

Solid incorporated reversible emulsion for a fracturing fluid

#71
20110005760
2011-01-13

System and method for low damage fracturing

#72
20100323932
2010-12-23

METHODS FOR TREATING A WELL OR THE LIKE

#73
20100210482
2010-08-19

Wellbore servicing fluids comprising cationic polymers and methods of using same

#74
20100200235
2010-08-12

Degradable perforation balls and associated methods of use in subterranean applications

#75
20100163228
2010-07-01

Internal breaker for oilfield treatments

#76
20100144560
2010-06-10

Methods for reducing fluid loss of a viscoelastic surfactant gel into a subterranean formation

#77
20090166038
2009-07-02

Organic acid compositions and methods of use in subterranean operations

#78
20090156433
2009-06-18

HF acidizing compositions and methods for improved placement in a subterranean formation to remediate formation damage

#79
20090042750
2009-02-12

Acidic treatment fluids comprising xanthan and associated methods

#80
20090025934
2009-01-29

System and method for low damage fracturing

#81
20080289823
2008-11-27

Degradable material assisted diversion or isolation

#82
20080139417
2008-06-12

Method of preventing or reducing fluid loss in subterranean formations

#83
20080119374
2008-05-22

Polymeric acid precursor compositions and methods

#84
20080078546
2008-04-03

Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods

#85
20080039347
2008-02-14

Treatment fluids comprising clarified xanthan and associated methods

#86
20070281868
2007-12-06

Acidic treatment fluids comprising xanthan and associated methods

#87
20070187096
2007-08-16

Organic acid compositions and methods of use in subterranean operations

#88
20070087940
2007-04-19

Method of using viscoelastic vesicular fluids to enhance productivity of formations

#89
20070032386
2007-02-08

Internal breaker for oilfield treatments

#90
20060113077
2006-06-01

Degradable material assisted diversion or isolation

#91
20060042797
2006-03-02

Methods for controlling fluid loss

#92
20050126778
2005-06-16

Hydraulic fracturing using non-ionic surfactant gelling agent

#93
20050037928
2005-02-17

Method of using viscoelastic vesicular fluids to enhance productivity of formations

#94
20050000694
2005-01-06

Methods of reducing water permeability for acidizing a subterranean formation

#95
17829877
2022-10-25

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

#96
17829805
2022-10-25

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