ClassID:

242555

Y10S507/935 - CPC Classification

Classification description:

Earth boring, well treating, and oil field chemistry Enhanced oil recovery

Sub-classes:
Recent Application in this class:
#1
20170226408
2017-08-10

Flooding operations employing chlorine dioxide

#2
20140311734
2014-10-23

Flooding operations employing chlorine dioxide

#3
20130041094
2013-02-14

Drag reduction of asphaltenic crude oils

#4
20130037117
2013-02-14

Drag reduction of asphaltenic crude oils

#5
20120305091
2012-12-06

Drag reduction of asphaltenic crude oils

#6
20120298209
2012-11-29

Drag reduction of asphaltenic crude oils

#7
20120247758
2012-10-04

Method and apparatus to treat well stimulation fluids in-situ

#8
20110190530
2011-08-04

Polycationic viscoelastic compositions

#9
20110118154
2011-05-19

Method of making a synthetic alkylaryl sulfonate

#10
20100317549
2010-12-16

Emulsifier blend

#11
20100311622
2010-12-09

Polycationic viscoelastic compositions

#12
20100300967
2010-12-02

Breaker fluids and methods of using the same

#13
20090305925
2009-12-10

Utilization of an anhydride as a demulsifier and a solvent for demulsifier formulations

#14
20090205821
2009-08-20

Method and apparatus to treat well stimulation fluids in-situ

#15
20090036332
2009-02-05

Composition and process for enhanced oil recovery

#16
20080255009
2008-10-16

Polycationic viscoelastic compositions

#17
20080248977
2008-10-09

Polycationic viscoelastic compositions

#18
20080248976
2008-10-09

Polycationic viscoelastic compositions

#19
20080149530
2008-06-26

Drag reduction of asphaltenic crude oils

#20
20070173418
2007-07-26

Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control

#21
20060111247
2006-05-25

Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control

#22
20050224230
2005-10-13

Composition and process for enhanced oil recovery

#23
20050130849
2005-06-16

Methods of reducing fluid loss in a wellbore servicing fluid

#24
20050051363
2005-03-10

Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control