ClassID:

104282

C09K8/422 - 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 specially adapted for sealing expandable pipes, e.g. of the non-hardening type

Recent Application in this class:
#1
20230407161
2023-12-21

BOP ELASTOMER SEALS WITH IMPROVED SELF-HEALING

#2
20210363836
2021-11-25

Method to attain full annular coverage during cementing or mud circulation

#3
20200263075
2020-08-20

Nanosilica dispersion for thermally insulating packer fluid

#4
20190376359
2019-12-12

HYDROPHOBIC DIELECTRIC SEALING MATERIALS

#5
20190249067
2019-08-15

Nanosilica dispersion for thermally insulating packer fluid

#6
20190226295
2019-07-25

ELASTOMER CHARACTERIZATION

#7
20190194521
2019-06-27

Nanosilica dispersion for thermally insulating packer fluid

#8
20190078010
2019-03-14

Nanosilica dispersion for thermally insulating packer fluid

#9
20180355692
2018-12-13

Method of producing resin composite with required thermal and mechanical properties to form a durable well seal in applications

#10
20150240587
2015-08-27

Method of opening an orifice in a downhole article, method for making the same and article made thereby

#11
20150240584
2015-08-27

Removable downhole article with frangible protective coating, method of making, and method of using the same

#12
20140087977
2014-03-27

High water and brine swell elastomeric compositions and method for making and using same

#13
20140083702
2014-03-27

IN SITU POLYMERIZATION FOR COMPLETIONS SEALING OR REPAIR

#14
20130037267
2013-02-14

System and method for improving zonal isolation in a well

#15
20100186955
2010-07-29

METHOD OF WELL CEMENTING

#16
20100163252
2010-07-01

Method and composition for zonal isolation of a well

#17
20080110628
2008-05-15

Method of Sealing an Annular Space in a Wellbore

#18
16223456
2020-01-07

Gellable, non-aqueous oil well treatment fluids comprising elastomeric maleic anhydride copolymers