ClassID:

104352

C09K8/84 - 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 stimulating production by acting on the underground formation Compositions based on water or polar solvents

Sub-classes:
Recent Application in this class:
#1
20260071115
2026-03-12

AQUEOUS NANOBUBBLE DISPERSION AND GAS SUPERSATURATION AT ELEVATED PRESSURES

#2
20260002067
2026-01-01

SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS

#3
20260002066
2026-01-01

SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS

#4
20250207040
2025-06-26

Remediation of Rag Layer and Other Disposable Layers in Oil Tanks and Storage Equipment

#5
20240409804
2024-12-12

SCALE INHIBITOR FLUID AND METHOD FOR INHIBITING SCALE FORMATION

#6
20240279527
2024-08-22

SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS

#7
20240191146
2024-06-13

Remediation of rag layer and other disposable layers in oil tanks and storage equipment

#8
20230332036
2023-10-19

SCALE INHIBITOR FLUID AND METHOD FOR INHIBITING SCALE FORMATION

#9
20230332034
2023-10-19

SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS

#10
20230134060
2023-05-04

Remediation of rag layer and other disposable layers in oil tanks and storage equipment

#11
20220403228
2022-12-22

Fracturing fluids containing hydrophilic fibers

#12
20220127524
2022-04-28

SALT-TOLERANT SELF-SUSPENDING PROPPANTS MADE WITH NEUTRAL STARCHES

#13
20220025250
2022-01-27

LOW TEMPERATURE CURABLE PROPPANT

#14
20210277755
2021-09-09

Methodology for developing treatment fluid compositions to enhance near- and far-field diversion downhole

#15
20210130704
2021-05-06

Remediation of rag layer and other disposable layers in oil tanks and storage equipment

#16
20210095190
2021-04-01

Rotary steerable drilling tool and method

#17
20200115625
2020-04-16

Using polyaminated fatty acid-based oil compositions for controlling dust from additive particles

#18
20200063026
2020-02-27

LOW TEMPERATURE CURABLE PROPPANT

#19
20190352558
2019-11-21

Rotary steerable drilling tool and method

#20
20190284917
2019-09-19

Synthetic sweet spots in tight formations by injection of nano encapsulated reactants

#21
20180282615
2018-10-04

System and methods for delivery of multiple highly interactive stimulation treatments in single dose and single pumping stage

#22
20180201828
2018-07-19

Proppant comprising swellable coating thereon for treatment of subterranean formations

#23
20180179858
2018-06-28

Methods of microbial measuring and control

#24
20180127644
2018-05-10

Fracturing fluids containing hydrophilic fibers

#25
20180099882
2018-04-12

Method and system for the autonomous self-limiting generation of chlorine dioxide

#26
20170335170
2017-11-23

Methods and compositions for stabilizing fracture faces during hydraulic fracturing treatments

#27
20170198190
2017-07-13

Diverter composition including rheologically-modified invert emulsion and method of use

#28
20170190956
2017-07-06

AQUEOUS EMULSIONS FOR CROSSLINKING

#29
20160272870
2016-09-22

Aqueous suspensions of silica additives

#30
20160229797
2016-08-11

Low pH metal-free preparation of aminated organic acid

#31
20160003018
2016-01-07

Methods and compositions for use in oil and/or gas wells comprising a terpene alcohol

#32
20150361330
2015-12-17

Environmentally friendly stimulation fluids, processes to create wormholes in carbonate reservoirs, and processes to remove wellbore damage in carbonate reservoirs

#33
20150330198
2015-11-19

Synthetic sweet spots in tight formations by injection of nano encapsulated reactants

#34
20150225640
2015-08-13

METHODS AND COMPOSITIONS FOR DELAYED RELEASE OF CHEMICALS AND PARTICLES

#35
20150218432
2015-08-06

Heat removal in drilling and production operations

#36
20150152721
2015-06-04

Use of ionized fluid in hydraulic fracturing

#37
20140209312
2014-07-31

Use of ionized water in hydraulic fracturing

#38
20140166294
2014-06-19

Cystine proteases for bacterial control

#39
20120216990
2012-08-30

Heat removal in drilling and production operations

#40
20120202720
2012-08-09

Environmentally friendly stimulation fluids, processes to create wormholes in carbonate reservoirs, and processes to remove wellbore damage in carbonate reservoirs

#41
20100108316
2010-05-06

Method of improving recovery from hydrocarbon reservoirs

#42
20090192053
2009-07-30

Methods and compositions for delayed release of chemicals and particles

#43
14278938
2015-08-25

Electrocoagulation removal of hydrate inhibitors in produced water