ClassID:

104296

C09K8/504 - 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 Compositions based on water or polar solvents

Sub-classes:
Recent Application in this class:
#1
20250051630
2025-02-13

Composite gels for water shutoff in fractured reservoirs

#2
20220081603
2022-03-17

Downhole fluids and methods of use thereof

#3
20200224530
2020-07-16

Contrast enhancement agents for subterranean treatment fluids

#4
20200088012
2020-03-19

Methods and apparatuses for controlling fines migration in a wellbore

#5
20190390099
2019-12-26

Downhole fluids and methods of use thereof

#6
20180238168
2018-08-23

Contrast enhancement agents for subterranean treatment fluids

#7
20180037795
2018-02-08

Downhole fluids and methods of use thereof

#8
20180022984
2018-01-25

Activators for inorganic oxide breakers

#9
20160369154
2016-12-22

DOWNHOLE STRUCTURES INCLUDING SOLUBLE GLASS

#10
20160304764
2016-10-20

Biodegradable, food grade shale stabilizer for use in oil and gas wells

#11
20160282234
2016-09-29

Methods relating to designing wellbore strengthening fluids

#12
20140014332
2014-01-16

Methods relating to designing wellbore strengthening fluids

#13
20130240210
2013-09-19

Systems and methods for injecting a particulate mixture

#14
20120160778
2012-06-28

Sulfate molecule removal through inorganic or divalent ion nuclei seeding

#15
20110005758
2011-01-13

Method and composition for curing lost circulation

#16
20090286697
2009-11-19

LOST CIRCULATION COMPOSITION

#17
20070095534
2007-05-03

Well bore treatment fluid

#18
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

#19
20060283592
2006-12-21

Method useful for controlling fluid loss in subterranean formations

#20
20060237192
2006-10-26

Lost circulation composition

#21
20060234871
2006-10-19

Sealant composition comprising a gel system and a reduced amount of cement for a permeable zone downhole