ClassID:

104295

C09K8/502 - 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 plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls Oil-based compositions

Recent Application in this class:
#1
20250354470
2025-11-20

METHODS FOR INCREASING THE MECHANICAL STRENGTH OF SUBTERRANEAN FORMATIONS USING MXENE-CONTAINING FLUIDS

#2
20250333634
2025-10-30

PACKER FLUIDS INCLUDING ETHYLENE GLYCOL

#3
20250198268
2025-06-19

METHODS OF TREATMENT OF SUBTERRANEAN FORMATION WITH POLYMERIC STRUCTURES FORMED IN SITU

#4
20250043656
2025-02-06

METHOD FOR IMPROVING OIL AND GAS WELL PRODUCTIVITY AND ENCAPSULATED LUBRICATING FRAC FLUID ADDITIVE BY LUBRICATION OF STIMULATED RESERVOIR VOLUME

#5
20240344418
2024-10-17

Method for improving oil and gas well productivity and encapsulated lubricating frac fluid additive by lubrication of stimulated reservoir volume

#6
20240279531
2024-08-22

Self-aggregating particles for lost circulation materials and related method

#7
20240059956
2024-02-22

Modified vegetable oil as fluid loss control additive

#8
20240026210
2024-01-25

Formulation for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

#9
20230392068
2023-12-07

Sand consolidation using asphaltene/tar with solvents and adsorption system

#10
20230203363
2023-06-29

Methods of treating lost circulation zones

#11
20220177767
2022-06-09

Oil-based fluid loss compositions

#12
20220169910
2022-06-02

Method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir

#13
20220135864
2022-05-05

Silicon dioxide Janus nanosheets relative permeability modifier (RPM) for reducing subterranean formation water permeability in carbonate and sandstone formations

#14
20220049149
2022-02-17

Engineered loss control slurry with improved performance

#15
20220033702
2022-02-03

Methods for wellbore strengthening

#16
20220010191
2022-01-13

Asphaltene solution for water shut off

#17
20210395601
2021-12-23

Silicon dioxide Janus nanosheets relative permeability modifier (RPM) for reducing subterranean formation water permeability in carbonate and sandstone formations

#18
20210395600
2021-12-23

Graphene oxide janus nanosheets relative permeability modifier (RPM) for reducing subterranean formation water permeability in carbonate formations

#19
20210340426
2021-11-04

Temporary blockage of fluid boundary between higher and lower fluid conductivity formations

#20
20210292634
2021-09-23

Composite diverting particulates

#21
20210246356
2021-08-12

Insulating fluids containing porous media

#22
20210215026
2021-07-15

METHODS OF TREATMENT OF A SUBTERRANEAN FORMATION WITH POLYMERIC STRUCTURES FORMED IN SITU

#23
20210156220
2021-05-27

Delay coating for wellbore isolation device

#24
20210139765
2021-05-13

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

#25
20210139764
2021-05-13

High temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method

#26
20210131201
2021-05-06

OIL SWELLABLE MATERIAL FOR LOW TEMPERATURE LOST CIRCULATION MATERIAL APPLICATION

#27
20210108123
2021-04-15

Compressed lost circulation materials

#28
20210040376
2021-02-11

De-oiled lost circulation materials

#29
20200399523
2020-12-24

Drilling fluids that include water-insoluble acid catalyst precursors

#30
20200399522
2020-12-24

Drilling fluids that include water-soluble acid catalyst precursors or reaction products of such and uses for such drilling fluids

#31
20200399521
2020-12-24

Drilling fluids that include water-soluble acid catalysts and uses for such

#32
20200392392
2020-12-17

Perlite containing drilling fluids and uses thereof

#33
20200283671
2020-09-10

Drilling fluid composition including viscosifier and method of using the same

#34
20200255717
2020-08-13

Oil-based drilling fluids for high pressure and high temperature drilling operations

#35
20200224078
2020-07-16

METHODS AND COMPOSITIONS FOR CONTROLLING EXCESS WATER PRODUCTION

#36
20200224077
2020-07-16

Methods and compositions for mitigating water production

#37
20200216739
2020-07-09

Additive to enhance sag stability of drilling fluid

#38
20200181474
2020-06-11

Organoclay compositions and oil-based drilling fluid comprising the clays

#39
20200048528
2020-02-13

Treatments in subterranean formations using degradable polymers in organic solvents

#40
20200024501
2020-01-23

Rheology modifier for subterranean treatment fluids

#41
20190375978
2019-12-12

Use of shape memory materials in wellbore servicing fluids

#42
20190225866
2019-07-25

Coated lost circulation materials and methods of using same

#43
20190194520
2019-06-27

Viscosifier for oil well fluids

#44
20190185734
2019-06-20

Invert emulsions having a non-aqueous based internal phase containing dissolved salts

#45
20190136683
2019-05-09

Methods of drilling with resistivity tools

#46
20190106615
2019-04-11

CONTROLLING PRODUCTION OF WATER IN SUBTERRANEAN FORMATIONS

#47
20190055449
2019-02-21

Oil-based drilling fluids for high pressure and high temperature drilling operations

#48
20190023964
2019-01-24

Additive to enhance sag stability of drilling fluid

#49
20180340111
2018-11-29

Thermal thickening in invert emulsion treatment fluids

#50
20180334609
2018-11-22

Oil-swellable, desolvated polymer gels and methods of using the same for preventing loss of non-aqueous wellbore fluids to the subterranean formation

#51
20180334608
2018-11-22

Oil-swellable, desolvated polymer gels and methods of using the same for preventing loss of non-aqueous wellbore fluids to the subterranean formation

#52
20180320048
2018-11-08

Wellbore fluids and methods of use thereof

#53
20180282607
2018-10-04

Hydrocarbon-free emulsifier

#54
20180251666
2018-09-06

Polymer-modified asphalt for drilling fluid applications

#55
20180230360
2018-08-16

Water swellable lost circulation materials

#56
20180223170
2018-08-09

Permeability modification of subterranean formation for consolidation treatments

#57
20180171209
2018-06-21

Enhancing SAG Resistance via Selection of Solids Based on Size and Material Composition

#58
20180134887
2018-05-17

Method for inhibiting the permeation of water in an extraction well of a hydrocarbon fluid from an underground reservoir

#59
20180086965
2018-03-29

Alkylpolyglucoside derivative fluid loss control additives for wellbore treatment fluids

#60
20170369760
2017-12-28

Invert emulsion treatment fluids comprising polar organic compounds and methods of use in subterranean operations

#61
20170369758
2017-12-28

Methods of using lost circulation treatment materials comprising brown mud

#62
20170369757
2017-12-28

Lost circulation materials comprising cane ash

#63
20170342786
2017-11-30

Lost circulation materials comprising red mud

#64
20170335166
2017-11-23

Methods of designing an invert emulsion fluid having high associative stability

#65
20170298264
2017-10-19

Use of nanoparticles as lubricity additive in well fluids

#66
20170283684
2017-10-05

Encapsulation of hydrophilic additives

#67
20170283683
2017-10-05

Milled fibers for fracture sealing performance improvement

#68
20170283681
2017-10-05

USE OF NANOPARTICLES AS LUBRICITY ADDITIVE IN WELL FLUIDS

#69
20170226405
2017-08-10

Fluid efficiency and flow back enhancer

#70
20170218254
2017-08-03

Low density oil external emulsion with gelled internal phase as a gravel packing carrier fluid

#71
20170137694
2017-05-18

Cementitious compositions comprising a non-aqueous fluid and an alkali-activated material

#72
20170137693
2017-05-18

Electrically activated adhesive for strengthening of a subterranean wellbore

#73
20170137690
2017-05-18

Wellbore strengthening additive and uses thereof

#74
20170130116
2017-05-11

Self-pressurizing soluble alkali silicate for use in sealing subterranean spaces

#75
20170029688
2017-02-02

Smart filter cake for strengthening formations

#76
20170015890
2017-01-19

Smart filtrate for strengthening formations

#77
20170009126
2017-01-12

Consolidation compositions comprising multipodal silane coupling agents

#78
20160369153
2016-12-22

Hydratable polymer slurry and method for water permeability control in subterranean formations

#79
20160369151
2016-12-22

Thermal thickening in invert emulsion treatment fluids

#80
20160347985
2016-12-01

FLUIDS AND METHODS FOR TREATING HYDROCARBON-BEARING FORMATIONS

#81
20160319180
2016-11-03

Self-crosslinking polymers and platelets for wellbore strengthening

#82
20160312105
2016-10-27

Multi-functional additive for oil or gas operations

#83
20160304763
2016-10-20

Wellbore service fluid

#84
20160289525
2016-10-06

Reaction products of acrylamide polymers and methods for use thereof as relative permeability modifiers

#85
20160282234
2016-09-29

Methods relating to designing wellbore strengthening fluids

#86
20160222275
2016-08-04

Wellbore fluid additives of fibrillated fibers and methods of use

#87
20160168965
2016-06-16

Compositions and methods for treating a subterranean formation

#88
20160168444
2016-06-16

Methods of designing an invert emulsion fluid having high associative stability

#89
20160152883
2016-06-02

Composition for use in conducting downhole operations in oil and gas wells

#90
20160137903
2016-05-19

Lost circulation material

#91
20160122613
2016-05-05

Drilling fluid composition including viscosifier and method of using the same

#92
20160108306
2016-04-21

Latent curing agent compatible with low pH frac fluids

#93
20160068733
2016-03-10

Wellbore fluids comprising mineral particles and methods relating thereto

#94
20160040058
2016-02-11

Accelerated swelling of oil-swellable elastomers in a well

#95
20160032168
2016-02-04

Viscosifier for oil well fluids

#96
20160024367
2016-01-28

Ethylene viscosifier polymer for treatment of a subterranean formation

#97
20150329762
2015-11-19

Use of nanoparticles as a lubricity additive in well fluids

#98
20150322744
2015-11-12

High temperature viscosifier for insulating packer fluids

#99
20150225638
2015-08-13

Fluid loss additives and methods of making and using same

#100
20150191983
2015-07-09

Wellbore fluid used with oil-swellable elements

#101
20150159074
2015-06-11

Reservoir wellbore fluid

#102
20150152315
2015-06-04

Insulating annular fluid

#103
20150152313
2015-06-04

Rheology modifier for drilling and well treatment fluids

#104
20150141300
2015-05-21

Fluorous additives for use in a fluorous-based treatment fluid

#105
20150136402
2015-05-21

Modified hydrocarbon resins as fluid loss additives

#106
20150126415
2015-05-07

Drilling fluids with nano and granular particles and their use for wellbore strengthening

#107
20150107858
2015-04-23

Fluid pressure transmission pill

#108
20150027702
2015-01-29

Methods of treatment of a subterranean formation with polymeric structures formed in situ

#109
20150008044
2015-01-08

Lost circulation drilling fluids comprising elastomeric rubber particles and a method for decreasing whole mud loss using such composition

#110
20140371114
2014-12-18

Far field diversion technique for treating subterranean formation

#111
20140338912
2014-11-20

Thermally-activated gellant for an oil or gas treatment fluid

#112
20140142004
2014-05-22

Amide branched aromatic gelling agent enhancers and breakers

#113
20140110119
2014-04-24

Wellbore fluid used with swellable elements

#114
20140110115
2014-04-24

Gelling Agents and Methods of Using the Same

#115
20140060841
2014-03-06

Fluorous additives for use in a fluorous-based treatment fluid

#116
20140041870
2014-02-13

Method for reducing permeability of a subterranean reservoir

#117
20140014332
2014-01-16

Methods relating to designing wellbore strengthening fluids

#118
20130331302
2013-12-12

Fluid loss additive for oil-based muds

#119
20130319672
2013-12-05

Methods of Using Wellbore Servicing Compositions

#120
20130312967
2013-11-28

METHOD FOR LIMITING THE WATER OR GAS CONING IN AN EXTRACTION WELL OF A HYDROCARBON FLUID

#121
20130267444
2013-10-10

Wellbore servicing fluid system and methods of use

#122
20130264057
2013-10-10

Wellbore servicing fluid system and methods of use

#123
20130085087
2013-04-04

Pyromellitamide gelling agents

#124
20130085086
2013-04-04

Fluid loss additives and methods of making and using same

#125
20130085085
2013-04-04

Fluid loss additives and methods of making and using same

#126
20130008654
2013-01-10

Method for Drilling and Completion Operations with Settable Resin Compositions

#127
20120322695
2012-12-20

Methods for controlling lost circulation in a subterranean well and materials there for

#128
20120285691
2012-11-15

Permeability modification and water shut off composition and process

#129
20120267098
2012-10-25

Process of sealing a breakthrough created during the production of hydrocarbons in a subterranean formation

#130
20120241156
2012-09-27

SELECTIVE FLUID WITH ANCHORING AGENT FOR WATER CONTROL

#131
20120237757
2012-09-20

Methods for Forming a Permeable and Stable Mass in a Subterranean Formation

#132
20120211227
2012-08-23

Well treatment compositions and methods utilizing nano-particles

#133
20120210911
2012-08-23

Stable organic-based fluid loss additive containing an organophilic clay-based suspending agent for use in a well

#134
20120202717
2012-08-09

APPLICATION OF DEGRADABLE FIBERS IN INVERT EMULSION FLUIDS FOR FLUID LOSS CONTROL

#135
20120149605
2012-06-14

Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles

#136
20120125639
2012-05-24

Method of using gelled fluids with defined specific gravity

#137
20120111564
2012-05-10

Methods and compositions for altering the viscosity of treatment fluids used in subterranean operations

#138
20120037371
2012-02-16

Well servicing fluid

#139
20110303415
2011-12-15

Far field diversion technique for treating subterranean formation

#140
20110303411
2011-12-15

Swellable/degradable “sand” plug system for horizontal wells

#141
20110297377
2011-12-08

Stable organic-based fluid loss additive containing an organophilic clay-based suspending agent for use in a well

#142
20110290489
2011-12-01

METHOD AND COMPOSITION

#143
20110284245
2011-11-24

FLUID COMPOSITION COMPRISING PARTICLES AND METHOD OF MODIFYING A WELLBORE USING THE SAME

#144
20110257051
2011-10-20

Consolidating emulsions comprising convertible surfactant compositions and methods related thereto

#145
20110214862
2011-09-08

PARTICULATE BRIDGING AGENTS USED FOR FORMING AND BREAKING FILTERCAKES ON WELLBORES

#146
20110118381
2011-05-19

Inverse emulsion polymers as lost circulation material

#147
20110065613
2011-03-17

Oil-based insulating packer fluid

#148
20110056683
2011-03-10

Wellbore fluid comprising a base fluid and a particulate bridging agent

#149
20110034583
2011-02-10

Methods for Forming a Permeable and Stable Mass in a Subterranean Formation

#150
20110030953
2011-02-10

Gelled liquid hydrocarbon treatment fluids and their associated methods of use

#151
20110017461
2011-01-27

Process for consolidating sand

#152
20110005758
2011-01-13

Method and composition for curing lost circulation

#153
20100323932
2010-12-23

METHODS FOR TREATING A WELL OR THE LIKE

#154
20100319915
2010-12-23

Application of degradable fibers in invert emulsion fluids for fluid loss control

#155
20100258313
2010-10-14

Invert silicate fluids for wellbore strengthening

#156
20100248996
2010-09-30

Wellbore fluid

#157
20100230169
2010-09-16

COMPOSITIONS AND METHODS FOR INHIBITING LOST CIRCULATION DURING WELL OPERATIONS

#158
20100210485
2010-08-19

Oil Formulation for Preventing Water Penetration in Underground Formations

#159
20100210481
2010-08-19

Drilling fluids with redispersible polymer powders

#160
20100210480
2010-08-19

USE OF INVERT EPOXY EMULSIONS FOR WELLBORE STABILIZATION

#161
20100186957
2010-07-29

Fluid pressure transmission pill

#162
20100032160
2010-02-11

Fluid loss compositions and methods of use for subterranean operations

#163
20090301714
2009-12-10

Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles

#164
20090286702
2009-11-19

Using nanoparticles for water flow control in subterranean formations

#165
20090286697
2009-11-19

LOST CIRCULATION COMPOSITION

#166
20090275489
2009-11-05

Method and chemical agent for reduction of water production from oil and gas containing wells

#167
20090181866
2009-07-16

Methods and compositions for altering the viscosity of treatment fluids used in subterranean operations

#168
20090143255
2009-06-04

Methods and Compositions for Improving Well Bore Stability in Subterranean Formations

#169
20090008095
2009-01-08

Wellbore fluid comprising a base fluid and a particulate bridging agent

#170
20080196897
2008-08-21

Methods of completing wells for controlling water and particulate production

#171
20080190614
2008-08-14

Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations

#172
20080139417
2008-06-12

Method of preventing or reducing fluid loss in subterranean formations

#173
20080023201
2008-01-31

Concentrated suspension of particulate additives for fracturing and other fluids

#174
20080009424
2008-01-10

Emulsified gelant

#175
20080009421
2008-01-10

Fluid loss additive for oil-based muds

#176
20080006406
2008-01-10

Methods of enhancing uniform placement of a resin in a subterranean formation

#177
20070149412
2007-06-28

Oil-based insulating packer fluid

#178
20070095534
2007-05-03

Well bore treatment fluid

#179
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

#180
20070017676
2007-01-25

Methods for wellbore strengthening and controlling fluid circulation loss

#181
20070012447
2007-01-18

Inverse emulsion polymers as lost circulation material

#182
20060278437
2006-12-14

Fluid loss reducer for high temperature high pressure water based-mud application

#183
20060270562
2006-11-30

Drilling fluids with redispersible polymer powders

#184
20060252652
2006-11-09

Oil base fluids containing hydrophilic tannins

#185
20060240993
2006-10-26

Fluid loss reducer for high temperature high pressure water based-mud application

#186
20060237192
2006-10-26

Lost circulation composition

#187
20060188651
2006-08-24

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

#188
20060185846
2006-08-24

Methods for forming a permeable and stable mass in a subterranean formation

#189
20050284666
2005-12-29

Geosynthetic composite for borehole strengthening

#190
20050269080
2005-12-08

Method and apparatus for performing chemical treatments of exposed geological formations

#191
20050170973
2005-08-04

Method and composition for inhibiting lost circulation during well operation

#192
20050115710
2005-06-02

Method of well treatment

#193
20050113261
2005-05-26

Process for the preparation of a homogeneous, low-viscosity and long-term-stable polymer dispersion in mineral oils

#194
20050034867
2005-02-17

Subterranean fluids and methods of cementing in subterranean formations

#195
18296281
2024-08-20

Sized bridging agents, low density pill and fluid compositions comprising said agents, and methods of controlling fluid loss and formation damage using said compositions

#196
18101460
2024-03-19

Curing lost circulation of oil-based drilling muds

#197
17536554
2022-11-15

Composition and method for controlling lost circulation

#198
16682966
2021-01-12

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

#199
16276027
2019-10-15

Oil-soluble coated particle flow modifier for fractured-vuggy carbonate reservoir and preparation method and use thereof

#200
15829532
2018-09-25

Loss circulation material composition comprising oil-swellable and desolvated polymer gels