Class / Patent application number | Description | Number of patent applications / Date published |
507240000 |
Organic component is quaternary ammonium salt
| 48 |
507244000 |
Oxygen is attached directly or indirectly to carbon by nonionic bonding
| 29 |
507241000 |
Organic component contains plural carboxylic acid, ester, or salt groups attached directly or indirectly to nitrogen by nonionic bonding
| 26 |
507242000 |
Nitrogen is part of a hetero ring
| 18 |
507248000 |
Organic component consists only of carbon, hydrogen, and nitrogen | 2 |
20100267594 | Nano-encapsulated triggered-release viscosity breakers - A method for the encapsulation and triggered-release of water-soluble or water-dispersible materials. The method comprises a) providing an amount of electrolyte having a charge, b) providing an amount of counterion having a valence of at least 2, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form aggregates, d) adding a compound to be encapsulated, and e) adding nanoparticles to the solution such that nanoparticles arrange themselves around the aggregates. Release of the encapsulated species is triggered by disassembly or deformation of the microcapsules though disruption of the charge interactions. This method is specifically useful for the controlled viscosity reduction of the fracturing fluids commonly utilized in the oil field. | 10-21-2010 |
20120035086 | Methods and Compositions for Inhibiting Metal Corrosion - Methods of inhibiting the corrosion of a metal surface contacted by an aqueous acid solution. The methods combine a corrosion inhibiting composition with the aqueous acid solution, wherein the corrosion inhibiting composition comprises a reaction product of an alpha,beta-unsaturated ketone with a primary or secondary amine. The metal surface is then contacted with the aqueous acid solution comprising the corrosion inhibiting composition, thereby inhibiting corrosion thereon. | 02-09-2012 |
507247000 |
Sulfur is attached directly or indirectly to carbon by nonionic bonding | 1 |
20080214414 | Organosulfonyl Latent Acids for Petroleum Well Acidizing - Oil wells are treated with latent acids containing a sulfonyl moiety, wherein the latent acid is capable of providing an active acid after injection into an oil well. The latent acids are converted to active acids, such as mineral acids or strong organic acids, in the oil well, with resultant dissolution of acid-soluble minerals that impede oil or gas flow. RYSO2X is an exemplary latent acid, where: R is C(1)-C(30) hydrocaryl alone, or appended to an oligomeric or polymeric chain, or substituted; X is halogen; and Y is O, S, Se, or NR or a direct bond. M is a Group IVA metal, a Group IVB metal, a Group IB metal, or a Group HB metal. Other exemplary latent acids include amine functionality. | 09-04-2008 |
Entries |
Document | Title | Date |
20080227668 | Corrosion-inhibiting additives, treatment fluids, and associated methods - Among other things, corrosion-inhibiting additives that comprise certain surfactants, and associated treatment fluids and methods of use are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises a base fluid, an α,β-unsaturated aldehyde, a sulfur-containing compound, and at least one nitrogen-containing surfactant that is anionic, nonionic, amphoteric, or zwitterionic; and introducing the treatment fluid into a subterranean formation. In another embodiment, the methods comprise: providing a corrosion-inhibiting additive that comprises an α,β-unsaturated aldehyde, a sulfur-containing compound, and at least one nitrogen-containing surfactant that is anionic, nonionic, amphoteric, or zwitterionic; contacting a surface with the corrosion-inhibiting additive; and allowing the corrosion-inhibiting additive to interact with the surface, whereby corrosion of the surface is at least partially inhibited or a portion of an undesirable substance on the surface is removed. | 09-18-2008 |
20080227669 | Corrosion-inhibiting additives, treatment fluids, and associated methods - Among other things, corrosion-inhibiting additives that comprise certain surfactants, and associated treatment fluids and methods of use are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises a base fluid, an α,β-unsaturated aldehyde, a sulfur-containing compound, and at least one nitrogen-containing surfactant that is anionic, nonionic, amphoteric, or zwitterionic; and introducing the treatment fluid into a subterranean formation. In another embodiment, the methods comprise: providing a corrosion-inhibiting additive that comprises an α,β-unsaturated aldehyde, a sulfur-containing compound, and at least one nitrogen-containing surfactant that is anionic, nonionic, amphoteric, or zwitterionic; contacting a surface with the corrosion-inhibiting additive; and allowing the corrosion-inhibiting additive to interact with the surface, whereby corrosion of the surface is at least partially inhibited or a portion of an undesirable substance on the surface is removed. | 09-18-2008 |
20080300152 | Methods and Compositions for Crosslinking Polymers with Boronic Acids - The present invention provides a method of forming a viscosified treatment fluid comprising: providing a treatment fluid that comprises water and a gelling agent; contacting the treatment fluid with a boronic acid crosslinking agent so as to form a crosslinked gelling agent, wherein the boronic acid crosslinking agent comprises a compound having the formula: | 12-04-2008 |
20090192058 | COMPOSITIONS AND METHODS OF TREATING HIGH TEMPERATURE SUBTERRANEAN FORMATIONS - Compositions and methods of treating high temperature subterranean formations of up to about 500° F. (260° C.) are provided. The compositions and methods utilize a high molecular weight synthetic copolymer and a pH buffer than maintains a pH in a range of about 4.5 to about 5.25 for the compositions. The high molecular weight synthetic copolymer is derived from acrylamide, acrylamidomethylpropanesulfonic acid, and vinyl phosphonate, | 07-30-2009 |
20100022420 | COMPOSITIONS AND METHODS FOR MITIGATING OR PREVENTING EMULSION FORMATION IN HYDROCARBON BODIES - A composition for mitigating or preventing the formation of an emulsion between naphthenic acid and metal cations in a hydrocarbon body, the composition including at least one alkoxylated amine and at least one acid and/or alcohol is disclosed. | 01-28-2010 |
20100056404 | METHOD FOR TREATING HYDROGEN SULFIDE-CONTAINING FLUIDS - The present invention relates generally to a method for treating hydrogen sulfide-containing fluids, more specifically to a method of treating hydrogen sulfide associated with petroleum and/or natural gas production. | 03-04-2010 |
20100204071 | AQUEOUS PARTICULATE SLURRY COMPOSITIONS AND METHODS OF MAKING SAME - A sand slurry composition and a method for making sand slurries are disclosed. The sand slurry composition is comprised of sand, an aqueous liquid and a chemical compound that renders the surface sand of hydrophobic. The method is comprised of rendering sand surface hydrophobic during or before making the slurry. This method and composition can find many applications in different industries, especially in various oil field applications. | 08-12-2010 |
20110124534 | NON-PHOSPHORUS-BASED GELLANT FOR HYDROCARBON FLUIDS - A substantially liquid gellant formed as one or more reaction products of a metal carboxylate or metal carboxylate amine salt, one or more organic acids, an ester which drives the reaction so that the reaction products are asymmetrical in structure, and a rheology modifier which preferentially interacts between the reaction products for prevent solidifying of the gellant reaction products until such time as the gellant is mixed with the fracturing fluid containing an activator after which the reaction products preferentially interact with the activator to gel the fracturing fluid. The resulting gellant is capable of gelling a hydrocarbon base fluid in less than about 30 seconds. | 05-26-2011 |
20110287985 | METHODS AND SYSTEMS FOR TREATING SUBTERRANEAN WELLS - The present invention is directed to a method and system for treating a well having a wellbore extending from a ground surface or subsea surface downhole to an oil producing formation. Oil producing formations are capable of generating formation fluids into a wellbore. Formation fluids are comprised of at least an oil fraction and an aqueous fraction. Emulsions may form during oil production, and such emulsions may be comprised of oil and water. Inhibitor compositions may be employed to break such emulsions. | 11-24-2011 |
20150361329 | Highly Concentrated, Water-Free Amine Salts of Hydrocarbon Alkoxysulfates and Use and Method Using Aqueous Dilutions of the Same - The present invention relates to highly concentrated, anhydrous amine salts of hydrocarbon polyalkoxy sulfates, wherein the salts are selected from the group of substituted amines, preferably alkanolamines. The products obtained are of low viscosity and pumpable at room temperature. Due to the absence of water, the salts are highly resistant to hydrolysis, even at high temperatures. The invention further relates to the use of the compositions according to the invention in an aqueous dilution for use in oil reservoirs with the aim of achieving enhanced oil production, or for the recovery of hydrocarbons from tar sands or other surfaces or materials provided with hydrocarbon. | 12-17-2015 |