ClassID:

104292

C09K8/493 - 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 cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes Additives for reducing or preventing gas migration

Recent Application in this class:
#1
20260132327
2026-05-14

Nanomodified Polymer with Cement Hydration-Matching Polymerization Kinetics to Modify Cement for Wellbore Applications and Methods of Makin

#2
20250197712
2025-06-19

HYDROCARBON SWELLING PARTICLES FOR WELLBORE CEMENTING

#3
20240279530
2024-08-22

HYDRAULIC CEMENT COMPOSITION, PROCESS AND USE

#4
20240067860
2024-02-29

COMPOSITIONS AND METHODS FOR CARBON DIOXIDE SOLIDIFICATION

#5
20230295483
2023-09-21

COMPOSITION, PREPARATION METHOD FOR AND APPLICATION OF COMPOSITION, AND SELF-HEALING METHOD FOR WELL CEMENTING IN OIL/GAS FIELD

#6
20220403223
2022-12-22

Hydraulic cement composition, process and use

#7
20220363973
2022-11-17

Hydrocarbon swelling particles for wellbore cementing

#8
20220306926
2022-09-29

Gas Migration Mitigation for Oil and Gas Well Cements

#9
20220081603
2022-03-17

Downhole fluids and methods of use thereof

#10
20210189217
2021-06-24

CEMENT SLURRY COMPOSITIONS RESPONSIVE TO HYDROCARBON GAS

#11
20210095180
2021-04-01

Combination for filtrate control and gas migration

#12
20210054256
2021-02-25

Material design for the encapsulation of additives and release

#13
20210053874
2021-02-25

DELAYED-EXPANSION CEMENT AND CEMENTING OPERATIONS

#14
20200199434
2020-06-25

Material design for the encapsulation of additives and release

#15
20200087565
2020-03-19

Capsule design for the capture of reagents

#16
20200087564
2020-03-19

Capsule design for the capture of reagents

#17
20200071596
2020-03-05

Cement compositions including epoxy resin systems for preventing fluid migration

#18
20200071595
2020-03-05

Cement compositions including epoxy resin systems for preventing fluid migration

#19
20200056084
2020-02-20

Cement slurry responsive to hydrocarbon gas

#20
20200002597
2020-01-02

PROCESS TO PREPARE A SOLID CEMENT COMPOSITION

#21
20190390099
2019-12-26

Downhole fluids and methods of use thereof

#22
20190270926
2019-09-05

Capsule design for the capture of reagents

#23
20190203100
2019-07-04

Method for controlled release and making of a cement additive in a wellbore

#24
20190203098
2019-07-04

Capsule design for the capture of reagents

#25
20190120012
2019-04-25

Expansive cement

#26
20180328138
2018-11-15

Crack-resistant cement composition

#27
20180208825
2018-07-26

CONTROLLABLE SEALANT COMPOSITION FOR CONFORMANCE AND CONSOLIDATION APPLICATIONS

#28
20180155605
2018-06-07

Swellable glass particles for reducing fluid flow in subterranean formations

#29
20180142136
2018-05-24

Expansive cement

#30
20180037795
2018-02-08

Downhole fluids and methods of use thereof

#31
20170369763
2017-12-28

METHYLHYDROXYETHYL CELLULOSE AS CEMENT ADDITIVE FOR USE AT ELEVATED TEMPERATURES

#32
20170015824
2017-01-19

Swellable rubber compositions

#33
20150107494
2015-04-23

High density cement formulation to prevent gas migration problems

#34
20140345866
2014-11-27

Modified cement composition, preparation and application thereof

#35
20140316026
2014-10-23

Self-adaptive cements

#36
20140054038
2014-02-27

Methods for completing subterranean wells

#37
20120267108
2012-10-25

Use of methylhydroxyethyl cellulose as cement additive

#38
20120245062
2012-09-27

USE OF HIGH RATIO AQUEOUS ALKALI SILICATES FOR PROFILE MODIFICATION, WATER CONTROL AND STABILIZATION

#39
20120214712
2012-08-23

Methods of using polysaccharide based cement additives

#40
20120205106
2012-08-16

Self-adaptive cements

#41
20120205105
2012-08-16

Self-adaptive cements

#42
20120186812
2012-07-26

Modified cement composition, preparation and application thereof

#43
20120073813
2012-03-29

Weight materials for use in cement, spacer and drilling fluids

#44
20110224109
2011-09-15

Reversible Peptide Surfactants For Oilfield Applications

#45
20110056690
2011-03-10

Well Repair Using Swellable Material in a Remedial Matrix

#46
20100292365
2010-11-18

Latex compositions comprising pozzolan and/or cement kiln dust and methods of use

#47
20100041792
2010-02-18

Latex compositions comprising pozzolan and/or cement kiln dust and methods of use

#48
20080300150
2008-12-04

Methods of using polysaccharide based cement additives

#49
20080161445
2008-07-03

Gas Migration Prevention Solid Additive Based on Crosslinked PVA Microgel for Cementing Applications

#50
20080156493
2008-07-03

Solid gas migration control additives based on latex powders for cementing applications

#51
20080011202
2008-01-17

Cement compositions comprising aromatic sulfonated polymers and methods of using the same

#52
20060169176
2006-08-03

Processes for incorporating inert gas in a cement composition containing spherical beads

#53
20060081373
2006-04-20

Cement compositions comprising aromatic sulfonated polymers and methods of using the same

#54
20050160947
2005-07-28

Process for controlling gas migration during well cementing

#55
20050098317
2005-05-12

Processes for incorporating inert gas in a cement composition containing spherical beads

#56
20050006020
2005-01-13

Method of hardening a fluid mass