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Class Information
Number: 507/226
Name: Earth boring, well treating, and oil field chemistry > Well treating > Contains organic component > Organic component is solid synthetic resin > Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) > Polymer derived from acrylic acid monomer or derivative > Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.) > Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)
Description: Compositions wherein both nitrogen and sulfur are attached to the acrylic moiety through direct or indirect nonionic bonding (e.g., acrylamidoalkylsulfonates, etc.).


Patents under this class:
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Patent Number Title Of Patent Date Issued
7576040 Cement compositions comprising humic acid grafted fluid loss control additives Aug. 18, 2009
7484564 Delayed tackifying compositions and associated methods involving controlling particulate migration Feb. 3, 2009
7378377 Compositions for preventing coagulation of water-in-oil emulsion polymers in aqueous saline well treating fluids May. 27, 2008
7341979 Well treatment method Mar. 11, 2008
7332459 Method for scale inhibition in oil wells Feb. 19, 2008
7306039 Methods of using crosslinkable compositions Dec. 11, 2007
7271134 Water-based polymers for use as friction reducers in aqueous treatment fluids Sep. 18, 2007
7261157 Methods of controlling particulate segregation in slurries Aug. 28, 2007
7237609 Methods for producing fluids from acidized and consolidated portions of subterranean formations Jul. 3, 2007
7207387 Methods and compositions for use with spacer fluids used in subterranean well bores Apr. 24, 2007
7204311 Methods for controlling migration of particulates in a subterranean formation Apr. 17, 2007
7196039 Methods of reducing fluid loss in a wellbore servicing fluid Mar. 27, 2007
7178596 Methods for improving proppant pack permeability and fracture conductivity in a subterranean well Feb. 20, 2007
7159656 Methods of reducing the permeabilities of horizontal well bore sections Jan. 9, 2007
7150319 Method for reducing or completely eliminating water influx in an underground formation, and crosslinkable copolymers for implementing said method Dec. 19, 2006
7128148 Well treatment fluid and methods for blocking permeability of a subterranean zone Oct. 31, 2006
7117943 Friction reducers for fluids comprising carbon dioxide and methods of using friction reducers in fluids comprising carbon dioxide Oct. 10, 2006
7114568 Hydrophobically modified polymers for a well completion spacer fluid Oct. 3, 2006
7098171 Synthetic filtration control polymers for wellbore fluids Aug. 29, 2006
7087556 Compositions for treating subterranean zones penetrated by well bores Aug. 8, 2006
7073585 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications Jul. 11, 2006
7059408 Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry Jun. 13, 2006
7056868 Hydrophobe associative polymers and compositions and methods employing them Jun. 6, 2006
7004254 Subterranean treatment fluids, friction reducing copolymers, and associated methods Feb. 28, 2006
6995120 Scale control composition for high scaling environments Feb. 7, 2006
6986391 Methods of fracturing subterranean zones penetrated by well bores and fracturing fluids therefor Jan. 17, 2006
6983799 Method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation Jan. 10, 2006
6978836 Methods for controlling water and particulate production Dec. 27, 2005
6787506 Use of dispersion polymers as friction reducers in aqueous fracturing fluids Sep. 7, 2004
6770604 High temperature viscosifying and fluid loss controlling additives for well cements, well cement compositions and methods Aug. 3, 2004
6767867 Methods of treating subterranean zones penetrated by well bores Jul. 27, 2004
6767869 Well service fluid and method of making and using the same Jul. 27, 2004
6764981 Well treatment fluid and methods with oxidized chitosan-based compound Jul. 20, 2004
6729402 Method of recovering hydrocarbon fluids from a subterranean reservoir May. 4, 2004
6607035 Preventing flow through subterranean zones Aug. 19, 2003
6586371 Liquid compositions which reversibly viscosify or gel under the effect of shear Jul. 1, 2003
6465397 Synthetic crosslinked copolymer solutions and direct injection to subterranean oil and gas formations Oct. 15, 2002
6267893 Process for cleaning fluids and particulate solids Jul. 31, 2001
6265355 Gel-breaker composition and a method for breaking a gel Jul. 24, 2001
6228812 Compositions and methods for selective modification of subterranean formation permeability May. 8, 2001
6196317 Method and compositions for reducing the permeabilities of subterranean zones Mar. 6, 2001
6172010 Water-based foaming composition-method for making same Jan. 9, 2001
5874387 Method and cement-drilling fluid cement composition for cementing a wellbore Feb. 23, 1999
5866517 Method and spacer fluid composition for displacing drilling fluid from a wellbore Feb. 2, 1999
5789352 Well completion spacer fluids and methods Aug. 4, 1998
5721313 Crosslinked polymer composition Feb. 24, 1998
5654261 Permeability modifying composition for use in oil recovery Aug. 5, 1997
5607902 Method of treating shale and clay in hydrocarbon formation drilling Mar. 4, 1997
5458197 Well cleanout system and method Oct. 17, 1995
5432153 Gelling compositions useful for oil field applications Jul. 11, 1995

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