| |
 |
|
Class Information
Number: 507/130
Name: Earth boring, well treating, and oil field chemistry > Earth boring > Contains organic component > Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding > Nitrogen is part of a hetero ring
Description: Composition wherein said component contains nitrogen as part of a hetero ring (e.g., methylene blue, imidazoline, pyridine, piperidine, etc.).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7323434 |
Electropositive production well treating fluid and method of preparing the same |
Jan. 29, 2008 |
| 7178610 |
Subterranean treatment fluids comprising polyoxazoline compositions and methods of use in subterranean formations |
Feb. 20, 2007 |
| 7012043 |
Drilling fluids |
Mar. 14, 2006 |
| 6905605 |
Method for inhibiting the plugging of conduits by gas hydrates |
Jun. 14, 2005 |
| 6793025 |
Double emulsion based drilling fluids |
Sep. 21, 2004 |
| 6770602 |
Oil based well fluids with high solids content |
Aug. 3, 2004 |
| 6608005 |
Wellbore fluids and their application |
Aug. 19, 2003 |
| 6544932 |
Additives for inhibiting gas hydrate formation |
Apr. 8, 2003 |
| 6506710 |
Viscoelastic surfactants and compositions containing same |
Jan. 14, 2003 |
| 6369004 |
Additives for inhibiting gas hydrate formation |
Apr. 9, 2002 |
| 6239183 |
Method for controlling the rheology of an aqueous fluid and gelling agent therefor |
May. 29, 2001 |
| 5922653 |
Compositions and processes for treating subterranean formations |
Jul. 13, 1999 |
| 5869433 |
Non-fluorescing oil-based drilling fluid |
Feb. 9, 1999 |
| 5807810 |
Functional fluids and liquid cleaning compositions and suspending media |
Sep. 15, 1998 |
| 5756004 |
Quaternary ammonium compounds useful for inhibiting metal corrosion |
May. 26, 1998 |
| 5650374 |
Herbicidal 1-cyclopropyl tetrazolinones |
Jul. 22, 1997 |
| 5459125 |
Corrosion inhibitor composition and method of use |
Oct. 17, 1995 |
| 5411670 |
Method and composition for protecting metal surfaces from oxidative environments |
May. 2, 1995 |
| 5254531 |
Oleophilic basic amine compounds as an additive for invert drilling muds |
Oct. 19, 1993 |
| 5189012 |
Oil based synthetic hydrocarbon drilling fluid |
Feb. 23, 1993 |
| 5106516 |
Monocarboxylic acid methylesters in invert drilling muds |
Apr. 21, 1992 |
| 5094762 |
Mud drilling fluids, additives and process for making the same |
Mar. 10, 1992 |
| 5082576 |
Removal of sulfides using chlorite and an amphoteric ammonium betaine |
Jan. 21, 1992 |
| H935 |
Compositions for oil-base drilling fluids |
Jul. 2, 1991 |
| 4964615 |
Compositions for freeing jammed drill pipes |
Oct. 23, 1990 |
| 4941983 |
Fluid loss-reducing additives for oil-based well working fluids |
Jul. 17, 1990 |
| 4816303 |
Process for inhibiting corrosion of metal and corrosion-inhibiting layer use therein |
Mar. 28, 1989 |
| 4810786 |
Stabilization of xanthan gum in aqueous solution |
Mar. 7, 1989 |
| 4762625 |
Viscosifiers for brines utilizing hydrophilic polymer-mineral oil systems |
Aug. 9, 1988 |
| 4758357 |
Dispersible hydrophilic polymer compositions for use in viscosifying heavy brines |
Jul. 19, 1988 |
| 4735731 |
Process for reversible thickening of a liquid |
Apr. 5, 1988 |
| 4725372 |
Aqueous wellbore service fluids |
Feb. 16, 1988 |
| 4713183 |
Oil based drilling fluid reversion |
Dec. 15, 1987 |
| 4659676 |
Fluorescent tracers for hydrophobic fluids |
Apr. 21, 1987 |
| 4658036 |
Invert emulsifiers for oil-base drilling muds |
Apr. 14, 1987 |
| 4609476 |
High temperature stable aqueous brine fluids |
Sep. 2, 1986 |
| 4607099 |
Stabilization of xanthan gum in aqueous solution |
Aug. 19, 1986 |
| 4605505 |
Drilling fluids |
Aug. 12, 1986 |
| 4584386 |
Alkylthiomethyl substituted mono-oxazolines |
Apr. 22, 1986 |
| 4568392 |
Well treating fluid |
Feb. 4, 1986 |
| 4552591 |
Oil field biocide composition |
Nov. 12, 1985 |
| 4498994 |
High temperature stable drilling fluids containing non-aqueous solvents |
Feb. 12, 1985 |
| 4491524 |
Lubricating additive for drilling muds |
Jan. 1, 1985 |
| 4464269 |
Additive composition for release of stuck drill pipe |
Aug. 7, 1984 |
| 4455429 |
Oxazolines of 2-(alkylthio)succinic acids as an additive for drilling muds |
Jun. 19, 1984 |
| 4431551 |
Oxazolines of 2-(alkylthio)succinic acids as an additive for drilling muds |
Feb. 14, 1984 |
| 4374737 |
Nonpolluting drilling fluid composition |
Feb. 22, 1983 |
| 4252655 |
Scavenging hydrogen sulfide in an oil well |
Feb. 24, 1981 |
| 4148736 |
Oil recovery process using viscosified surfactant solutions |
Apr. 10, 1979 |
| 4064056 |
Drilling fluids containing an additive composition |
Dec. 20, 1977 |
|
|
|
