ClassID:

104274

C09K8/265 - 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; Well-drilling compositions; Aqueous well-drilling compositions; Oil-in-water emulsions containing inorganic additives

Recent Application in this class:
#1
20250179343
2025-06-05

BIODEGRADABLE SURFACTANT FLUID LOSS CONTROL ADDITIVE

#2
20230407744
2023-12-21

MAGNETIC NANOEMULSIONS FOR FLUID CONDUCTIVITY ANALYSIS IN SUBSURFACE RESERVOIRS

#3
20230104709
2023-04-06

Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition

#4
20210246352
2021-08-12

WELLBORE DRILLING COMPOSITIONS

#5
20200392392
2020-12-17

Perlite containing drilling fluids and uses thereof

#6
20200157402
2020-05-21

Emulsifiers for direct emulsion drilling fluids

#7
20190270925
2019-09-05

METHOD OF DRILLING A SUBTERRANEAN GEOLOGICAL FORMATION

#8
20180298706
2018-10-18

Direct emulsions and methods of use

#9
20170029686
2017-02-02

Wellbore fluids for use downhole

#10
20150361325
2015-12-17

Method for recovering oil

#11
20150353808
2015-12-10

A Solid Particles-Stabilized Emulsion And Process For Preparing The Same

#12
20150315454
2015-11-05

Oil recovery method and product

#13
20140154392
2014-06-05

PROCESS FOR UPGRADING LOW VALUE RENEWABLE OILS

#14
20130096036
2013-04-18

Nanoemulsions

#15
20120181033
2012-07-19

Nanohybrid phase interfaces for foaming in oil field applications

#16
20120181029
2012-07-19

Nanohybrid-stabilized emulsions and methods of use in oil field applications

#17
20120181019
2012-07-19

Nanohybrid phase interfaces for altering wettability in oil field applications

#18
20110287159
2011-11-24

Process for upgrading low value renewable oils

#19
20110056683
2011-03-10

Wellbore fluid comprising a base fluid and a particulate bridging agent

#20
20100323931
2010-12-23

STABILISED EMULSIONS

#21
20100137168
2010-06-03

Nanoemulsions

#22
20090008095
2009-01-08

Wellbore fluid comprising a base fluid and a particulate bridging agent

#23
20070227404
2007-10-04

Method of using high-alumina cements for rheology control of liquid phases

#24
20060084581
2006-04-20

Solids-stabilized oil-in-water emulsion and a method for preparing same

#25
20060070736
2006-04-06

Solids-stabilized oil-in-water emulsion and a method for preparing same

#26
20050202978
2005-09-15

Polymer-based, surfactant-free, emulsions and methods of use thereof

#27
20050202977
2005-09-15

Surfactant-free emulsions and methods of use thereof

#28
17751822
2022-10-25

Palm oil invert emulsion hydrogen sulfide mitigating drilling fluid and method of drilling subterranean geological formation

#29
17536554
2022-11-15

Composition and method for controlling lost circulation

#30
17505362
2022-05-31

Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof