| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507239000 | Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding | 84 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 507240000 | Organic component is quaternary ammonium salt | 33 |
| 20100087340 | Methods and Compositions for Inhibiting Metal Corrosion - Methods and compositions are provided that inhibit the corrosion of metal surfaces by aqueous acid solutions. The inhibition is basically achieved by the addition of a reaction product of an alpha,beta-unsaturated aldehyde or ketone with a primary or secondary amine to the aqueous acid solution. | 04-08-2010 |
| 20080227670 | Drilling Fluids Containing Biodegradable Organophilic Clay - Methods are provided including methods of treating a well bore with drilling fluids comprising organophilic clays treated with quaternary ammonium surfactants having at least two amide linkages. In some embodiments, the methods comprise: providing a drilling fluid comprising a nonaqueous phase and an organophilic clay treated with a quaternary ammonium surfactant having at least two amide linkages; and placing at least a portion of the drilling fluid into the well bore. In other embodiments, the methods comprise combining an organophilic clay with a quaternary ammonium surfactant having at least one amide linkage to form a mixture, and combining the mixture with a fluid comprising a nonaqueous phase to form a drilling fluid. Additional methods are also provided. | 09-18-2008 |
| 20130035266 | COALESCENCE OF EMULSIONS - The invention relates to methods of controlling the stability of emulsions to coalescence and phase separation. Use of chaotropic counterions to promote coalescence and/or phase separation of emulsions stabilized by ionic surfactants is described. | 02-07-2013 |
| 20090156434 | Process to prepare borozirconate solution and use as cross-linker in hydraulic fracturing fluids - A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with a first alkanolamine, then glycerol and water, then with a solution of a boron compound and a second alkanolamine. The solution is particularly suitable for use in a cross-linking composition at temperatures of 275° F. (135° C.) and higher in the subterranean formation. | 06-18-2009 |
| 20130053285 | DRAG-REDUCING AGENT FOR USE IN INJECTION WATER AT OIL RECOVERY - A drag-reducing agent in an amount of 50-400 ppm in water having an electrolyte content of 0.01-7% by weight includes two zwitterionics, each including acyl containing surfactant and an anionic surfactant, where the hydrophilic group is a sulphate, a sulphonate or an ether sulphate. The water containing the drag-reducing agent is suitable to be used in injection water at oil recovery. | 02-28-2013 |
| 20130090270 | Method to Complex Metals in Aqueous Treating Fluids for Ves-Gelled Fluids - Aqueous treating fluids may include a viscoelastic surfactant (VES) and an aqueous base fluid, e.g. a drilling fluid, whereby the VES may increase and/or maintain the viscosity of the aqueous treating fluid. Metal ions may be present within the aqueous treating fluid that break, reduce, and/or digest the VES within the aqueous treating fluid. An effective amount of complexation particles may be added to the aqueous treating fluid for complexing at least a portion of these metal ions and thereby disallowing the metal ions from breaking, reducing, and/or altering the VES within the aqueous treating fluid. | 04-11-2013 |
| 20090270282 | PROCESS OF HYDRAULIC FRACTURING - Hydraulic fracturing of a subterranean hydrocarbon reservoir is carried out using an aqueous wellbore fluid which is an aqueous solution of a surfactant which has the formula(R | 10-29-2009 |
| 20090029880 | Composition containing lonic liquid clay stabilizers and/or shale inhibitors and method of using the same - An ionic liquid may be used to inhibit the swelling and/or disintegration of clay in a subterranean formation. A subterranean clay-containing formation may be treated with the ionic liquid by contacting the formation with a well treatment composition containing the ionic liquid dispersed or dissolved in a carrier fluid. Damage to the formation caused by contact with the well treating composition is reduced or substantially eliminated. | 01-29-2009 |
| 20120142562 | ORGANIC SALTS FOR REDUCING STONE PERMEABLITIES - The use of free, aromatic acids which contain at least two aromatic ring systems or at least two acid functions, and/or salts thereof, for influencing rock formations in the exploitation of underground mineral oil and/or natural gas deposits is described. The free acids are used in particular for influencing and especially controlling the flow of acid into rock formations in so-called acidizing methods. Suitable salts of said aromatic acids serve for reducing the rock permeability and in particular reducing the inflow of water into the well bore. In addition to this use, corresponding methods are also claimed. | 06-07-2012 |
| 20100056405 | SELF-DIVERTING ACID TREATMENT WITH FORMIC-ACID-FREE CORROSION INHIBITOR - A method of treating a subterranean formation penetrated by a wellbore of a well having iron-containing components is carried out by introducing a treatment fluid into the wellbore of the well. The treatment fluid is formed from an aqueous solution, a mineral acid, a viscoelastic surfactant gelling agent and corrosion inhibitor system containing at least one of an alkyl, alkenyl, alicyclic or aromatic substituted aliphatic ketone and aliphatic or aromatic aldehyde. The treatment fluid is substantially free of any formic acid or precursor formic acid. In certain embodiments, the corrosion inhibitor system comprises a mixture of at least one of an alkenyl phenone or α,β-unsaturated aldehyde, an unsaturated ketone or unsaturated aldehyde other than the alkenyl phenone and α,β-unsaturated aldehyde, a dispersing agent, an extender and an alcohol solvent. A corrosion inhibitor intensifier may also be used in certain embodiments, which may include a mixture of cuprous iodide and cuprous chloride. | 03-04-2010 |
| 20090149355 | Process to prepare borozirconate solution and use as cross-linker in hydraulic fracturing fluids - A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with alkanolamine, then glycerol and water, then with a boron compound. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at temperatures of 275° F. (135° C.) and higher in the formation. | 06-11-2009 |
| 20090247432 | DEEP EUTECTIC SOLVENTS AND APPLICATIONS - A method of solubilizing/removing cellulose or chemically-modified cellulosic polymers utilized in subterranean drilling operations such as fracturing. The method involves introducing a deep eutectic solvent (DES) into a subterranean region. Deep eutectic solvents useful as cellulose solvents include quaternary ammonium compounds, including choline chloride and chlorcholine chloride, reacted with a compound selected from amides, amines, carboxylic acids alcohols, and metal halides. The DES material can be pumped downhole after fracturing operations to remove cellulosic material used, for example, to thicken fracturing fluid which is left behind in the created fractures, on the face of the formation, along the wellbore, or elsewhere within the subterranean region. The DES can be used alone or in a sequential treatment protocol, whereby the DES is introduced into the subterranean region, followed by post-treatment introduction of water, caustic, acid or anhydride into the subterranean as a flush. | 10-01-2009 |
| 20090170732 | SCALE INHIBITING WELL TREATMENT - Provided is a method for inhibiting scale formation within a hydrocarbon producing system, said method comprising contacting said system with a polymer formed from a diallyl ammonium salt, a monomer comprising one carboxylate group and a monomer comprising at least two carboxylate groups or an anhydride group. Also provided are hydrocarbon well treatment compositions and polymers for use in connection with the provided methods. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. | 07-02-2009 |
| 20080293597 | METHOD FOR INHIBITING HYDRATE FORMATION - A sterically hindered quaternary ammonium composition is prepared by contacting a solvent having hydroxyl functionality, a halohydrin, and a sterically hindered tertiary amine, under reaction conditions sufficient to produce a sterically hindered quaternary ammonium compound. The reaction proceeds with excellent yield. The resulting compounds are particularly useful for inhibiting formation of hydrates in hydrocarbon reservoirs and pipelines. Novel compositions of matter include sterically hindered quaternary ammonium compounds conforming to the formulas C | 11-27-2008 |
| 20080248977 | POLYCATIONIC VISCOELASTIC COMPOSITIONS - Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In at least one aspect, the present technology provides polycationic quaternary ammonium compounds comprising dissymmetric bis-quaternary compounds. In another aspect, the present technology provides viscoelastic compositions comprising polycationic quaternary ammonium compounds that comprise dissymmetric bis-quaternary compounds. In yet another aspect, the present technology provides polycationic quaternary ammonium compounds comprising a carboxylate functional polycationic quaternary ammonium compound. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or about 110° C. when the amount of the one or polycationic quaternary compounds is less than about 10% by weight based on the total weight of the composition. | 10-09-2008 |
| 20080248976 | POLYCATIONIC VISCOELASTIC COMPOSITIONS - Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In at least one aspect, the present technology provides polycationic quaternary ammonium compounds comprising bis-quaternary compounds. In another aspect, the present technology provides viscoelastic compositions that comprise polycationic quaternary ammonium compounds comprising bis-quaternary compounds. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or about 110° C. when the amount of the one or polycationic quaternary compounds is less than about 10% by weight based on the total weight of the composition. | 10-09-2008 |
| 20110269652 | GEMINI SURFACTANTS - The invention relates to gemini surfactants of formula IA wherein A is a core derived from an organic polyhydroxy compound; R | 11-03-2011 |
| 20110207633 | DEEP EUTECTIC SOLVENTS AND APPLICATIONS - A method of solubilizing/removing cellulose or chemically-modified cellulosic polymers utilized in subterranean drilling operations such as fracturing. The method involves introducing a deep eutectic solvent (DES) into a subterranean region. Deep eutectic solvents useful as cellulose solvents include quaternary ammonium compounds, including choline chloride and chlorcholine chloride, reacted with a compound selected from amides, amines, carboxylic acids alcohols, and metal halides. The DES material can be pumped downhole after fracturing operations to remove cellulosic material used, for example, to thicken fracturing fluid which is left behind in the created fractures, on the face of the formation, along the wellbore, or elsewhere within the subterranean region. The DES can be used alone or in a sequential treatment protocol, whereby the DES is introduced into the subterranean region, followed by post-treatment introduction of water, caustic, acid or anhydride into the subterranean as a flush. | 08-25-2011 |
| 20100216674 | MULTICOMPONENT VISCOELASTIC SURFACTANT FLUID AND METHOD OF USING AS A FRACTURING FLUID - There is a viscoelastic fluid. The fluid has one or more cationic surfactants selected from the group consisting of certain quaternary salts, certain amines, and combinations thereof; one or more anionic polymers/anionic surfactants; one or more of certain zwitterionic/amphoteric surfactants; and water. There is also a method of fracturing a subterranean formation. The viscoelastic fluid is pumped through a wellbore and into a subterranean formation at a pressure sufficient to fracture the formation. There is also a method for gravel packing a subterranean formation. | 08-26-2010 |
| 20100331223 | Acidic Viscosity Enhancer for Viscoelastic Surfactant Fluids - The invention discloses method of treating a subterranean formation of a well bore, the method comprising: providing a treatment fluid comprising: an aqueous base fluid; a viscosity enhancer; and a viscoelastic surfactant, wherein the enhancer is acid in the aqueous base fluid and co-operates with the viscoelastic surfactant to enhance viscosity compared to viscoelastic surfactant alone in the aqueous base fluid; and introducing the treatment fluid into the well bore. | 12-30-2010 |
| 20110077174 | CORROSION INHIBITOR INTENSIFIER COMPOSITIONS AND ASSOCIATED METHODS - At least in aspect, the invention provides methods that include a method comprising: contacting a metal surface with an acidic fluid comprising an aqueous base-fluid, an acid, a corrosion inhibitor, and a corrosion inhibitor intensifier composition comprising an intensifier compound that corresponds to the following formula: | 03-31-2011 |
| 20110152137 | METHOD OF USING CORROSION INHIBITORS DERIVED FROM SPENT FLUIDS IN THE TREATMENT OF WELLS - Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine of the formula: | 06-23-2011 |
| 20090062158 | RHEOLOGY MODIFYING AGENTS AND METHODS OF MODIFYING FLUID RHEOLOGY USE IN HYDROCARBON RECOVERY - A method of modifying the rheological properties of a fluid include adding to the fluid at least one polymer that is the reaction product of at least one water soluble, allyic monomer and at least one structure inducing agent. The polymer is adapted to increase the viscosity of the fluid and to impart non-Newtonian characteristic to the fluid. Non-Newtonian characteristics are, for example, evidenced by the fluid exhibiting an n value of less than 1 upon addition of the polymer as determined by the equation τ=Kθ | 03-05-2009 |
| 20080255009 | POLYCATIONIC VISCOELASTIC COMPOSITIONS - Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In one aspect, the present technology provides polycationic quaternary ammonium compounds that comprise bis-quaternary compound. The bis-quaternary compounds of the present technology can be symmetric or dissymmetric. In another aspect, the present technology provides viscoelastic well bore treatment fluids comprising water, and at least one polycationic quaternary ammonium compound that comprises a bis-quaternary compound. In another aspect, the present technology provides polycationic carboxylates. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or 110° C. when the amount of the one or polycationic quaternary compounds is less than about 10% by weight based on the total weight of the composition. | 10-16-2008 |
| 20080200353 | Viscoelastic surfactant fluids and related methods of use - Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts. | 08-21-2008 |
| 20100285999 | Treatment fluids for reduction of water blocks, Oil blocks, and/or gas condensates and associated methods - The present invention provides treatment fluids useful for subterranean operations, and more particularly, in at least one aspect, a treatment fluid that comprises a carrier fluid and a cationic surfactant comprising a cationic head group, a polar group attached to the head group, and a hydrophobic group that is either a saturated or unsaturated, branched or straight chain alkyl, and comprises about 6 carbons to about 22 carbons. The treatment fluids of the present invention are at least suitable for use as a remedial treatment for the reduction of existing water blocks, oil blocks, and/or gas condensates. | 11-11-2010 |
| 20110177985 | Surfactants for Reduction of Water Blocks and/or Gas Condensates and Associated Methods - Improved methods of oil and/or gas production by reducing the occurrence of water blocks and/or gas condensates in the treated portion of the formation are provided. In one embodiment, the methods comprise: providing a treatment fluid comprising: an aqueous base fluid, a friction reducing agent, and a quaternary ammonium surfactant described by at least the following formula: | 07-21-2011 |
| 20110021388 | Microemulsifiers and methods of making and using same - A method comprising contacting a zwitterionic surfactant, co-surfactant, and water to form a microemulsifier, and contacting the microemulsifier with an oleaginous fluid under low shear conditions to form a microemulsion. A method comprising introducing a first wellbore servicing fluid comprising at least one oleaginous fluid into a wellbore, wherein the first wellbore servicing fluid forms oil-wet solids and/or oil-wet surfaces in the wellbore, and contacting the oil-wet solids and/or oil-wet surfaces in the wellbore with a second wellbore servicing fluid comprising a zwitterionic surfactant, a co-surfactant, and a brine to form a microemulsion. | 01-27-2011 |
| 20120157357 | DETERGENT PACKAGE FOR IMPROVED RECOVERY AND TRANSPORT OF CRUDE OIL - A detergent package for changing wettability of a hydrocarbon bearing formulation and method regarding the same, comprising, at least one surfactant selected from the group consisting of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and mixtures thereof, and additional components selected from the group consisting of corrosion inhibitors, alkaline agents, oxidizers, bleaches, secondary surfactants, divalent sequestering cations, foaming agents, inert additives and combinations thereof. | 06-21-2012 |
| 20110092398 | VISCOELASTIC SURFACTANT FLUIDS AND RELATED METHODS OF USE - Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts. | 04-21-2011 |
| 20110105369 | WELL TREATMENT FLUIDS CONTAINING A VISCOELASTIC SURFACTANT AND A CROSS-LINKING AGENT COMPRISING A WATER-SOLUBLE TRANSITION METAL COMPLEX - The invention is directed to methods for treating a portion of a well. The methods include the steps of: (A) forming a viscoelastic treatment fluid, wherein the treatment fluid comprises: (i) water; (ii) a viscoelastic surfactant (“VES”), wherein the VES is soluble in the water and wherein the VES is in the form of micelles; and (iii) a cross-linking agent for the VES molecules, wherein: (a) the cross-linking agent comprises cross-linking agent molecules having at least one complexed transition metal, wherein the transition metal has a valence state of at least three; and (b) the cross-linking agent is soluble in the water; and (B) introducing the treatment fluid into a portion of the well. According to a first aspect of the invention, (a) the VES comprises VES molecules having an alkyl group of greater than 14 carbon atoms and (b) the VES comprises VES molecules having at least one functional group selected from a carboxylate group, an amino group, an alcohol group, and an ether group. According to a second aspect of the invention, the VES comprises VES molecules having both an alkyl group of greater than 14 carbon atoms and at least one functional group selected from a carboxylate group, an amino group, an alcohol group, and an ether group. | 05-05-2011 |
| 20110212862 | MULTICOMPONENT VISCOELASTIC SURFACTANT FLUID AND METHOD OF USING AS A FRACTURING FLUID - There is a viscoelastic fluid. The fluid has one or more cationic surfactants selected from the group consisting of certain quaternary salts, certain amines, and combinations thereof; one or more anionic polymers/anionic surfactants; one or more of certain zwitterionic/amphoteric surfactants; and water. There is also a method of fracturing a subterranean formation. The viscoelastic fluid is pumped through a wellbore and into a subterranean formation at a pressure sufficient to fracture the formation. There is also a method for gravel packing a subterranean formation. | 09-01-2011 |
| 20120277129 | MULTICOMPONENT VISCOELASTIC SURFACTANT FLUID AND METHOD OF USING AS A FRACTURING FLUID - There is a viscoelastic fluid. The fluid has one or more cationic surfactants selected from the group consisting of certain quaternary salts, certain amines, and combinations thereof; one or more anionic polymers/anionic surfactants; one or more of certain zwitterionic/amphoteric surfactants; and water. There is also a method of fracturing a subterranean formation. The viscoelastic fluid is pumped through a wellbore and into a subterranean formation at a pressure sufficient to fracture the formation. There is also a method for gravel packing a subterranean formation. | 11-01-2012 |
| 507241000 | Organic component contains plural carboxylic acid, ester, or salt groups attached directly or indirectly to nitrogen by nonionic bonding | 10 |
| 20130079260 | METHOD FOR SINGLE-STAGE TREATMENT OF SILICEOUS SUBTERRANEAN FORMATIONS - In a method of treating a sandstone-containing formation penetrated by a wellbore, a treatment fluid comprising an aqueous fluid containing a Bronsted acid, a hydrogen fluoride source and an organic acid or salt thereof that is substantially soluble in the aqueous fluid is formed. The treatment fluid contains less than about 2% of fluoride (F | 03-28-2013 |
| 20110263466 | Method of Simultaneously Dissolving Calcium Carbonate, Silica, and Silicate Minerals in Subterranean Formations - A method of dissolving minerals in subterranean formations is set forth. The method includes injecting a chelating solution into a subterranean formation. The chelating solution includes a thermally stable chelating agent and sufficient caustic to elevate the pH to 10-12.5. The chelating solution is capable of simultaneously dissolving silica, silicates, and calcite present in the subterranean formation. | 10-27-2011 |
| 20110207634 | PREPARING ETHER CARBOXYLATES - The present invention relates to a process for preparing ether carboxylates. | 08-25-2011 |
| 20100160189 | Method and Composition for Removing Filter Cake - The current disclosure describes a multifunctional fluid that addresses a new concept in the removal of filter cake. A composition is disclosed comprising: a carrier fluid, a surfactant, a fluorine source and an organic stabilizer able to minimize precipitation of fluorine The associated method to remove the filter cake is also described. | 06-24-2010 |
| 20120149607 | Method for Preventing Calcium Citrate Precipitation During Citric Acid Acidizing Treatments - Methods of preventing precipitation of calcium citrate and iron-based scale during acidizing treatments and related compositions are provided as embodiments of the present invention. The acidizing treatment fluid includes citric acid and tetra-salts of EDTA. | 06-14-2012 |
| 20120202720 | ENVIRONMENTALLY FRIENDLY STIMULATION FLUIDS, PROCESSES TO CREATE WORMHOLES IN CARBONATE RESERVOIRS, AND PROCESSES TO REMOVE WELLBORE DAMAGE IN CARBONATE RESERVOIRS - The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. | 08-09-2012 |
| 20110190173 | ACIDIC TREATMENT FLUIDS AND ASSOCIATED METHODS - Treatment fluids that comprise a phosphorus component useful for inhibiting metal corrosion in acidic environments and associated methods of use are provided. An example of a method of using such treatment fluids may comprise providing a treatment fluid that comprises: an aqueous base fluid, a weak acid or salt thereof, and a phosphorus component, and introducing the treatment fluid into a subterranean formation. | 08-04-2011 |
| 20090105097 | Degradable Friction Reducer - Novel wellbore service fluids are disclosed. The fluid may include an aqueous solvent and a synthetic degradable polymer that is soluble in the solvent. In a controlled way the molecular weight of the polymer may be reduced in response to internal or external triggers at the required time and temperature. The polymers are formed by essentially non degradable polymer chains “polymer type A” copolymerized with essentially degradable polymer chains “polymer type B”. This feature of “selective degradation” is not present in any of the polymeric fluids known as friction reducers. | 04-23-2009 |
| 20120252708 | COATED PARTICLES OF A GLUTAMIC ACID N,N-DIACETATE CHELATING AGENT - Process to prepare coated particles containing a particle and a coating, wherein the particle contains glutamic acid N,N-diacetic acid or a (partial) salt thereof of the formula HnYm-GLDA, wherein Y is a cation selected from the group of sodium, potassium, lithium, and mixtures thereof, n+m=4, in which the particle is made from a solution containing glutamic acid N,N-diacetic acid or a partial salt thereof that has a p H of between 4 and 11, and subsequently or simultaneously the coating is applied on the particle, to an intermediate particle of HnYm-GLDA, wherein n is 0.1-3.2 and m is 0.8-3.9, the coated particle obtainable with the process, and the use thereof. | 10-04-2012 |
| 20120115759 | TREATMENT FLUIDS CONTAINING A BORON TRIFLUORIDE COMPLEX AND METHODS FOR USE THEREOF - Treatment fluids for use in subterranean formations, particularly sandstone and other siliceous formations, may contain a source of fluoride ions to aid in mineral dissolution. In some cases, it may be desirable to generate the fluoride ions from a fluoride ion precursor, particularly a hydrofluoric acid precursor, such as a boron trifluoride complex. Methods described herein can comprise providing a treatment fluid that comprises an aqueous base fluid, a boron trifluoride complex, and a chelating agent composition, and introducing the treatment fluid into a subterranean formation, | 05-10-2012 |
| 507242000 | Nitrogen is part of a hetero ring | 10 |
| 20100130389 | Compositions and Methods for Removal of Asphaltenes from a Portion of a Wellbore or Subterranean Formation Using Water-Organic Solvent Emulsion with Non-Polar and Polar Organic Solvents - Compositions are provided for removing an organic material, especially asphaltenes, from a portion of a wellbore or a subterranean formation. The composition comprises: (A) water; (B) an organic solvent blend further comprising: (i) a non-polar organic solvent; and (ii) at least two polar organic solvents; and (C) a surfactant adapted for forming an emulsion of the organic solvent blend and the water. According to another aspect of the invention, the compositions comprise: (A) water, wherein the water is greater than 25% by volume of the composition; (B) an organic solvent blend further comprising: (i) a non-polar organic solvent; and (ii) a polar organic solvent; and (C) a surfactant adapted for forming an emulsion of the organic solvent blend and the water. Methods are provided for removing an organic material from a portion of a wellbore or a subterranean formation. The method comprises the steps of: (A) forming a composition according to the invention; and (B) introducing the composition to the portion from which the organic material is to be removed. | 05-27-2010 |
| 20120295823 | OIL RELEASE WITH N-LAUROYL AMINO ACID-BASED COMPOUNDS - Chemical compounds that are N-lauroyl amino acids or derivatives thereof were found to have oil-releasing activity. Solutions containing these compounds may be introduced into oil reservoirs or onto oil-contaminated surface sites to release oil from oil-coated surfaces. The released oil may be recovered for further processing or waste disposal. | 11-22-2012 |
| 507243000 | Plural heteroatoms in the ring | 8 |
| 20130130950 | HYDROGEN BONDING MATERIAL FOR OILFIELD APPLICATION - Methods of treating a well, by providing a supramolecular polymer fluid comprising units connected via reversible hydrogen bonds to form a supramolecular polymer; by introducing the supramolecular polymer fluid in the well; and by treating the well with the supramolecular polymer fluid. | 05-23-2013 |
| 20090149356 | ENVIRONMENTALLY FRIENDLY BIS-QUATERNARY COMPOUNDS FOR INHIBITING CORROSION AND REMOVING HYDROCARBONACEOUS DEPOSITS IN OIL AND GAS APPLICATIONS - Environmentally friendly compounds for corrosion inhibition and hydrocarbonaceous deposit removal and methods using such compounds are disclosed and claimed. The compounds are derivatives of heterocyclic bis-quaternary molecules having an amido moiety and are applicable to a variety of oil and gas operations. | 06-11-2009 |
| 20090181867 | CORROSION INHIBITORS FOR OILFIELD APPLICATIONS - Imidazoline dimer-type compounds which are prepared by the reaction of dimer fatty acid and a dialkylene triamine, such as diethylenetriamine (DETA), are useful for corrosion inhibition in water-containing fluids contacting metal, particularly fluids containing CO | 07-16-2009 |
| 20110071059 | FOAMERS FOR DOWNHOLE INJECTION - The present invention relates to a method for introducing a foaming composition including an imidazoline-based compound to a fluid. The foaming composition comprises at least one quaternized compound having an imidazoline moiety. An example of the quaternized compound is a quaternized imidazoline. | 03-24-2011 |
| 20120010110 | Method of Using Dithiazines and Derivatives Thereof in the Treatment of Wells - Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine derivative of the formula: | 01-12-2012 |
| 20100261623 | Corrosion inhibitor compositions comprising an aldehyde and a thiol and/or an amine functionalized ring structure and associated methods - Provided herein are methods and compositions that include a method comprising contacting a metal surface with an acidic fluid comprising a corrosion inhibitor that comprises a reaction product formed from a direct or an indirect reaction of an aldehyde with a thiol and/or an amine functionalized ring structure. A composition provided includes an acidic treatment fluid that comprises an aqueous-base fluid, and acid, and a corrosion inhibitor that comprises a reaction product formed from a direct or an indirect reaction of an aldehyde with a thiol and/or an amine functionalized ring structure. | 10-14-2010 |
| 20090131283 | IMIDAZOLINE-BASED HETEROCYCLIC FOAMERS FOR DOWNHOLE INJECTION - Disclosed are imidazoline-based foamers and corrosion inhibitors for treatment of oil and gas wells for enhanced production. The invention also includes methods of foaming a fluid by introducing the disclosed foamers to oil and gas wells. | 05-21-2009 |
| 20100167966 | CORROSION INHIBITORS - Provided is an anticorrosive composition for use in aqueous salt solutions. The composition contains an antimony compound and at least two other components selected from morpholine derivatives, acetylenic alcohols, ascorbic acid derivatives, and selenium compounds. The composition is particularly useful for inhibiting corrosion of metallic surfaces of drilling devices or refrigeration systems that are in contact with salt brines at elevated temperatures. | 07-01-2010 |
| 507244000 | Oxygen is attached directly or indirectly to carbon by nonionic bonding | 19 |
| 20080227671 | LOW TOXICITY SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: | 09-18-2008 |
| 20090156435 | Defoaming Methods and Compositions - Embodiments of the present invention are directed to defoaming methods and compositions for well treatment fluids. An exemplary embodiment of the present invention provides a method of defoaming a well treatment fluid, comprising combining a defoaming composition with the well treatment fluid, wherein the defoaming composition comprises an amide of a carboxylic acid, a polypropylene glycol, an ethoxylated and propoxylated fatty alcohol, an ethoxylated alcohol comprising from 3 carbons to 6 carbons, and a hydrophobic silica in an amount of up to about 3% by weight of the defoaming composition. | 06-18-2009 |
| 20090105098 | Methods of Inhibiting and/or Preventing Corrosion in Oilfield Treatment Applications - Corrosive effects arising during oilfield treatment applications are inhibited and/or prevented by introducing into an oil or gas well at least one compound of formula I: | 04-23-2009 |
| 20090275490 | Disproportionate Permeability Reduction Using A Viscoelastic Surfactant - The invention discloses a method of for changing the water permeability of a subterranean formation of a well, the method comprising: providing a fluid comprising a liquid carrier and a viscoelastic surfactant; introducing the fluid into the well; and contacting the fluid and the subterranean formation wherein the action of the liquid carrier and the viscoelastic surfactant is able to change the water permeability of the subterranean formation. The fluid may further comprise methanol, or a salt which can be embodied within the carrier fluid. Advantageously, no further RPM polymer is used. In a first aspect the method is used for reducing the amount of water produced, in as second aspect for improving the oil recovery. | 11-05-2009 |
| 20090291864 | VISCOELASTIC COMPOSITIONS - The present invention provides aqueous viscoelastic compositions comprising a cleavable anionic surfactant which is a sulphonate and possibly also an electrolyte. The cleavable surfactants useful in the present invention comprise a chemical bond, which is capable of being broken under appropriate conditions, to produce oil soluble and water soluble products typically having no interfacial properties and surface activity compared with the original surfactant molecule. Further, the rheological properties of the aqueous viscoelastic composition are usually altered upon cleavage of the cleavable surfactant generally resulting in the elimination of the viscosifying, viscoelastic and surfactant properties of the composition. Aqueous viscoelastic compositions in accordance with the present invention are suitable for use in oil-field applications, particularly for hydraulic fracturing of subterranean formations. Thus, the present invention also relates to a wellbore service fluid and a method of fracturing a subterranean formation. | 11-26-2009 |
| 20120142563 | Corrosion Inhibitor Compositions Comprising Reaction Products of Aldehydes and Amides and Related Methods - The invention relates to corrosion inhibitor compositions comprising products of a reaction between aldehydes and amides for use in subterranean applications and methods related thereto. In general, the methods for inhibiting corrosion comprise providing a corrosive environment and adding a composition comprising a corrosion inhibitor to the corrosive environment. The corrosion inhibitor comprises a product of a reaction between at least one aldehyde and at least one amide that is not formamide or a formamide derivative. | 06-07-2012 |
| 20110224111 | BIODEGRADABLE ANIONIC ACID CORROSION INHIBITOR COMPRISING SARCOSINES - An acid treatment composition is provided including an alkyl sarcosinate as corrosion inhibitor and an optional corrosion inhibitor intensifier in an acidic solution. Methods for treating wells with these acid treatment compositions are also provided that help control corrosion of the alloy surfaces used in the wells during the acid treatment. | 09-15-2011 |
| 20080261835 | Surfactant based compositions and process for heavy oil recovery - A process for recovering heavy oil with the steps of: a) injecting into one or more injection wells an aqueous injection fluid containing one or more surfactants designed to form a pseudo-emulsion between the injection fluid and the heavy oil, and, b) recovering the oil from one or more producing wells. The process does not require the addition of outside mechanical or thermal energy or solvents to recover the heavy oil and does not form emulsions between the injection fluid and the heavy oil that may be difficult to break when brought to the surface or may cause increased viscosity and injectivity problems within the reservoir. | 10-23-2008 |
| 20120202721 | ELECTROLYZED WATER - AMINE COMPOSITIONS AND METHODS OF USE - The invention is directed to a treatment fluid comprising electrolyzed water and an amine, and methods for producing and using same in the treatment of a gas or liquid containing a contaminant such as an acid gas or a sulphur compound. | 08-09-2012 |
| 20080200354 | BREAKER AND DISPLACEMENT FLUID AND METHOD OF USE - A method of cleaning a wellbore prior to the production of oil or gas is disclosed, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake. The method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid includes an aqueous fluid, and imino diacetic acid or salt thereof. Optionally an acid buffering agent, and a weighting age are also included. The breaker fluid is formulated such that after a predetermined period of time and the filter cake present in the wellbore or on the wellbore face is substantially degraded. Other methods may also include drilling the wellbore with a water-based drilling mud that forms a water-based filter cake, wherein the method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid may include an aqueous fluid, and an iminodiacetic acid or a salt thereof. | 08-21-2008 |
| 20110065612 | LOW INTERFACIAL TENSION SURFACTANTS FOR PETROLEUM APPLICATIONS - The invention relates to a class of novel surfactants that have utility in the recovery and/or extraction of oil. | 03-17-2011 |
| 20110065613 | OIL-BASED INSULATING PACKER FLUID - A packer or annular fluid includes a hydrocarbon fluid; and a gelling agent; wherein the packer fluid is a yield power law fluid. A method for preparing a packer fluid includes preparing a mixture of a hydrocarbon fluid, and a gelling agent; heating the mixture to a selected temperature; and shearing the mixture. A method for emplacing a packer fluid into an annulus includes preparing the packer fluid that includes a hydrocarbon fluid and a gelling agent, wherein the packer fluid is a yield power law fluid; and pumping the packer fluid into the annulus. | 03-17-2011 |
| 20090131284 | Solid zirconium-based cross-linking agent and use in oil field applications - A solid zirconium cross-linking agent is prepared comprising zirconium and hydroxyalkylated ethylene diamine ligand. Use of the cross-linking agent in compositions for oil field applications such as hydraulic fracturing and plugging of permeable zones is also disclosed. | 05-21-2009 |
| 20120083430 | WELL SERVICING FLUID COMPRISING AN ORGANIC SALT BEING THE PRODUCT OF AN ORGANIC ACID AND AN ORGANIC AMINE BASE AND METHOD OF SERVICING A WELL WITH THE FLUID - A well servicing fluid is disclosed. The well servicing fluid is formulated with components comprising: an organic salt, the organic salt being the product of an organic acid and an organic amine base; and an aqueous based solvent. A method of servicing a well is also disclosed. | 04-05-2012 |
| 20090253595 | Surfactants for hydrocarbon recovery - This invention provides compositions comprising an aqueous well fluid and at least one nonionic acetylenic alcoholic surfactant. The compositions may further comprise at least one fluoroaliphatic surfactant. Methods for recovery of aqueous well fluids involving the use of at least one nonionic acetylenic alcoholic surfactant are also provided, and these methods may further comprise the use of at least one fluoroaliphatic surfactant. | 10-08-2009 |
| 20120149608 | CORROSION INHIBITORS FOR OIL AND GAS APPLICATIONS - A corrosion inhibitor composition and method of inhibiting corrosion on a surface in an oil or gas application is disclosed and claimed. The corrosion inhibitor includes at least one fatty acid; at least one alkanolamine; at least one alkylamine; and at least one organic sulfonic acid. The method of inhibiting corrosion includes on a surface in an oil or gas application comprises contacting an effective dosage of the corrosion inhibitor with the surface. | 06-14-2012 |
| 507245000 | Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.) | 2 |
| 20120283154 | Saponified Fatty Acids as Breakers for Viscoelastic Surfactant-Gelled Fluids - Fluids viscosified with viscoelastic surfactants (VESs) may have their viscosities affected (increased or reduced, e.g. gels broken) by the indirect or direct action of a composition that contains at least one fatty acid that has been affected, modified or reacted with an alkali metal base, an alkali earth metal base, ammonium base, and/or organic base compound, optionally with an alkali metal halide salt, an alkali earth metal halide salt, and/or an ammonium halide salt. The composition containing the resulting saponification product is believed to either act as a co-surfactant with the VES itself to increase viscosity and/or possibly by disaggregating or otherwise affecting the micellar structure of the VES-gelled fluid. In a specific, non-limiting instance, a brine fluid gelled with an amine oxide surfactant may have its viscosity broken with a composition containing naturally-occurring fatty acids in canola oil or corn oil affected with CaOH, MgOH, NaOH and the like. | 11-08-2012 |
| 20120329685 | Particles Slurried in Oil for Viscoelastic Surfactant Gelled Fluids - Fluids viscosified with viscoelastic surfactants (VESs) may have their fluid loss properties improved with the presence of at least one mineral oil slurried together in combination with at least one particulate fluid loss control agent that may be an alkaline earth metal oxides, alkaline earth metal hydroxides, transition metal oxides, transition metal hydroxides, and mixtures thereof. The mineral oil having the particulate fluid loss control agents slurried within it may initially be dispersed oil droplets in an internal, discontinuous phase of the fluid. In one non-limiting embodiment, the slurry is added to the fluid after it has been substantially gelled. The mineral oil/particulate slurry may enhance the ability of a particulate fluid loss control agent to reduce fluid loss. The presence of the mineral oil may also eventually reduce the viscosity of the VES-gelled aqueous fluid. | 12-27-2012 |
| 507246000 | Organic component contains an ether linkage | 1 |
| 20100016184 | Orthoester-Based Surfactants and Associated Methods - Provided are treatment fluids that comprise a base fluid and an orthoester-based surfactant. In some instances, the treatment fluid may have a pH of about 8.5 or greater. Also provided are emulsified treatment fluids that comprise an oleaginous phase, an aqueous phase having a pH of about 8.5 or greater, and an orthoester-based surfactant. Methods of using the treatment fluid and methods of facilitating flow through a conduit also are provided. | 01-21-2010 |
| 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 |
| 507248000 | Organic component consists only of carbon, hydrogen, and nitrogen | 2 |
| 507249000 | Organic component contains carbon double or triple bonded to nitrogen (e.g., cyano, nitrilo, etc.) | 1 |
| 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 |
| 507250000 | Organic component is acyclic | 1 |
| 507251000 | Organic component contains plural nitrogen atoms attached directly or indirectly to carbon by nonionic bonding | 1 |
| 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 |
