Class / Patent application number | Description | Number of patent applications / Date published |
507235000 | Organic component contains phosphorus attached directly or indirectly to carbon by nonionic bonding | 36 |
20090192057 | 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 | 07-30-2009 |
20090286701 | Compositions and Methods for the Removal of Oil-Based Filtercakes - A method of servicing a wellbore comprising providing a composition comprising a mutual solvent precursor, an acid precursor, and an aqueous fluid, and contacting the composition with oil wet solids in the wellbore. A method of servicing a wellbore comprising introducing an oil-based fluid into a wellbore, wherein the oil-based fluid forms oil wet solids in the wellbore, contacting the oil wet solids in the wellbore with a composition comprising a mutual solvent precursor; an acid precursor and an aqueous fluid, and allowing the oil wet solids to become water wet. A method of servicing a well bore comprising contacting a composition comprising a formate ester with oil wet solids in the well bore under conditions wherein the formate ester hydrolyzes to release formic acid, wherein the formic acid catalyzes the hydrolysis of additional formate ester, and wherein all or a portion of the formate ester converts at least a portion of the oil-wet solids to water-wet solids. | 11-19-2009 |
20100081587 | 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. | 04-01-2010 |
20100190666 | METHOD FOR TREATING FRACTURING WATER - A method of treating a medium for water fracturing is disclosed, the method comprises: introducing at least one biocide and at least one metabolic inhibitor in the medium, using the medium for water fracturing. In another aspect a method of controlling the post-fracture reservoir souring by the metabolic activities of sulfate reducing bacteria of a well is described: at least one biocide and at least one metabolic inhibitor are introduced in a medium made of water, the medium is used for fracturing the well, and the medium remains in the reservoir to kill and/or inhibit growth of sulfate reducing bacteria. | 07-29-2010 |
20110111991 | Gelled Hydrocarbon System and Method With Dual-Function Viscosifier/Breaker Additive - A gelled organic-based fluid system and method of forming and using the system. The fluid system is prepared by gelling an organic solvent, a viscoelastic surfactant, and a nitrogen compound having a free electron pair such as urea in an amount effective to both increase viscosity and increase a rate of breaking the viscosity, relative to the gelled system without the nitrogen compound. In a further aspect, the method is used to treat a well penetrating a subterranean formation, for example, in a coiled tubing cleanout, or the like. | 05-12-2011 |
20110124533 | METHOD OF SCALE INHIBITION - A method is disclosed to inhibit scale formation in aqueous systems whereby a threshold amount of a scale inhibiting agent, represented by an aminoacid alkylphosphonic acid, is added to the aqueous system. The aminoacid moiety can be represented by α-species or by species having, at least, two or more carbon atoms between the carboxylic moiety and the amine group. These aminoacid based inhibitors exhibit unusually superior performance and system acceptability compared to leading state-of-the-art inhibitors. | 05-26-2011 |
20110237469 | COMPOSITIONS AND METHODS FOR INHIBITING EMULSION FORMATION IN HYDROCARBON BODIES - A composition for inhibiting the formation of an emulsion between naphthenic acid and metal ions in a hydrocarbon body, the composition including at least one alkoxylated amine in an amount of up to 30% w/w, at least one acid in an amount of from 2 to 10% w/w and at least one alcohol in an amount of from 30 to 70% w/w. A method for inhibiting the formation of an emulsion between naphthenic acid and metal ions in a hydrocarbon body using such a composition is also proposed. | 09-29-2011 |
507236000 | Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding | 8 |
20100137170 | DUAL USE WELL TREATMENT COMPOSITION - Stabilized sulfide control compositions for oil well and related uses are provided which include a first ingredient selected from the group consisting of tetra (hydroxymethyl) phosphine (THP) or a salt thereof (THPS) and an amino phosophono chelant. The compositions are stabilized against cold-weather crystal formation and deposition by the presence of a morpholine-based stabilizing agent. Preferred compositions include the sulfate salt of THP, diethylenetriamine penta (methylenephosophonic acid) sodium salt, and morpholine. | 06-03-2010 |
20100197530 | OIL FIELD TREATMENT FLUIDS WITH VISCOSIFIED BRINES - The present disclosure is directed to a method comprising introducing into a well bore a fluid comprising a zwitterionic polymer. The polymer is prepared by inverse emulsion polymerization of at least one monomer A | 08-05-2010 |
20110130312 | METHOD OF SECONDARY OIL RECOVERY - A method of secondary oil recovery is disclosed wherein from 0.1 to 100 000 ppm of a medium soluble aminoalkylene phosphonic acid amine salt are used wherein both the aminoalkylene phosphonic acid moiety and the amine moiety are selected from a specifically defined class of compounds. The substantially medium soluble aminoalkylene amine phosphonates exhibit a significantly improved compatibility with the recovery medium and thus can propagate fairly freely into the medium and consequently cover a largely extended rock surface before being subject to precipitation in the form of a medium insoluble scale inhibitor. The amine compound is represented by combinations of structurally different compounds. | 06-02-2011 |
20110143971 | VOLATILE-PHOSPHORUS FREE GELLING AGENTS - A gelling agent for a hydrocarbon fracturing fluid is disclosed, comprising the general formula of: in which X is an OR | 06-16-2011 |
20130303412 | Viscosified Fluid Loss Control Agent Utilizing Chelates - Disclosed herein is a well treatment method comprising the steps of injecting into a well a fluid loss control agent comprising a chelating agent, a viscosity increasing agent, and a plurality of at least partially insoluble bridging solid particles dispersed therein, wherein the chelating agent is effective to at least partially solubilize at least a portion of the bridging solid particles over a solubilizing period of time for thereafter substantially dissolving the bridging solid particles, wherein the solubilizing period of time is controlled by the concentration of the viscosity increasing agent, the concentration of the chelating agent, the composition of the metal salt, the pH of the fluid loss control agent, or a combination thereof. A fluid loss control agent is also disclosed. | 11-14-2013 |
20140303048 | ZETA POTENTIAL MODIFIERS TO DECREASE THE RESIDUAL OIL SATURATION - Compositions comprise an amine component, an aminephosphate component and may also include a solvent component. The compositions are adapted to coat solid materials, substrates and/or surfaces of producing of reservoirs and formations and methods for making and using same, where the coating agents modify surface properties of the solid materials, substrates and/or surfaces of producing formations decreasing residual oil saturation. | 10-09-2014 |
20140336089 | Scale Inhibitor - This invention relates to a process for inhibiting scaling in a subterranean oil or gas producing formation, comprising adding to the formation a composition comprising a metal chelant, a scale inhibitor and divalent metal cations, wherein the stability constant of the metal chelant—metal cation chelate at ambient temperature is equal to or higher than the stability constant of the chelate formed from the metal cations and the scale inhibitor, and wherein the solubility of the chelate formed from the metal cations and the scale inhibitor decreases with increasing temperature. | 11-13-2014 |
20160102241 | HEAVY CRUDE OIL VISCOSITY REDUCER - A viscosity reducer based on vegetable extracts of natural origin is disclosed. The vegetable extracts include a mixture of phosphoglycerides and vegetable oils. A method of reducing the viscosity in heavy and extra heavy crude oil using the viscosity reducer is also disclosed. No aromatic base solvents are needed. A reduction in diluent usage is achieved using the viscosity reducer based on vegetable extracts. The viscosity reducer composition includes a mixture of phosphoglycerides, vegetable oil, non-aromatic solvent, polycyclic aromatic hydrocarbon and stabilizer. | 04-14-2016 |
507237000 | Organic component contains a direct carbon to phosphorous nonionic bond (e.g., phosphonate, etc.) | 11 |
20080280790 | Well Treatment with Complexed Metal Crosslinkers - Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased. | 11-13-2008 |
20090023618 | METHOD FOR RECOVERING CRUDE OIL FROM A SUBTERRANEAN FORMATION - An aqueous fluid useful for the recovery of crude oil from a subterranean formation, including water and one or more organophosphorus materials and methods for using same. | 01-22-2009 |
20090247431 | BIODEGRADABLE ANIONIC ACID CORROSION INHIBITOR COMPRISING SARCOSINES - An acid treatment composition is provided including a corrosion inhibitor and an optional corrosion inhibitor intensifier in an acidic solution. More specifically, the composition includes an anionic surfactant. Methods for treating wells with these acid treatment compositions are also provided that help control corrosion of the steel used in the wells during the acid treatment. | 10-01-2009 |
20090270281 | USE OF SURFACTANT MIXTURES FOR TERTIARY MINERAL OIL EXTRACTION - The use of a surfactant mixture comprising at least one surfactant having a hydrocarbon radical composed of from 12 to 30 carbon atoms and at least one cosurfactant having a branched hydrocarbon radical composed of from 6 to 11 carbon atoms for tertiary mineral oil extraction. | 10-29-2009 |
20090281005 | METHOD OF ACID FRACTURING A SANDSTONE FORMATION - Methods and compositions useful in acidizing a subterranean formation with an oil-in-water emulsion that includes a sulfonate ester, a fluoride salt, a proppant, and water. The reaction of the ester and fluoride salt is delayed so that hydrofluoric acid is produced in-situ. | 11-12-2009 |
20090318315 | GELLED HYDROCARBONS FOR OILFIELD PROCESSES AND METHODS OF USE - Gelled liquid hydrocarbons and methods for gelling hydrocarbons and treating subterranean wellbores employ a phosphorus compound of the formula: | 12-24-2009 |
20110105368 | Scale Inhibiting Particulates and Methods of Using Scale Inhibiting Particulates - Scale-inhibiting particulates formed from a mixture of fly ash and a phosphonic acid curing agent wherein the fly ash is cured into a solid material by the contact with the phosphonic acid curing agent. Methods of using scale-inhibiting particulates to inhibit scale formation in a subterranean formation. | 05-05-2011 |
20110143972 | Scale squeeze treatment systems and methods - An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, citric acid, maleic acid, hydrofluoric acid, and mixtures thereof. | 06-16-2011 |
20110190172 | GELLED HYDROCARBONS FOR OILFIELD PROCESSES AND METHODS OF USE - Gelled liquid hydrocarbons and methods for gelling hydrocarbons and treating subterranean wellbores employ a phosphorus compound of the formula: | 08-04-2011 |
20130102504 | PROCESS FOR PRODUCING MINERAL OIL USING SURFACTANTS BASED ON A MIXTURE OF C20 GUERBET-, C22 GUERBET-, C24 GUERBET-CONTAINING HYDROCARBYL ALKOXYLATES - The present invention relates to a surfactant mixture comprising at least three ionic surfactants which differ in terms of the hydrocarbyl moiety (R | 04-25-2013 |
20140256604 | CATIONIC VISCOELASTIC SURFACTANT WITH NON-CATIONIC CORROSION INHIBITOR AND ORGANIC ANION FOR ACIDIZING - A treatment fluid and method treating a zone of a subterranean formation penetrated by a wellbore. The treatment fluid includes: (i) water; (ii) a strong acid; (iii) a cationic viscoelastic surfactant; (iv) an anionic organic component having at least 4 carbon atoms; and (v) a non-cationic corrosion inhibitor; wherein the pH of the treatment fluid is less than 0.5. Preferably, the viscosity of the treatment fluid is less than 5 cP at 40 sec-1. The method includes the steps of: (A) forming the treatment fluid; (B) introducing the treatment fluid through the wellbore into the zone; and (C) allowing time for the strong acid in the treatment fluid to spend in the formation. Preferably, as the acid spends in the subterranean formation, the viscosity of the treatment fluid increases in the well to above 5 cP. Such a treatment fluid shows good rheological properties at temperatures above 93° C. (200° F.). | 09-11-2014 |
507238000 | Organic component is a phosphate ester | 10 |
20090203556 | GELLED HYDROCARBONS FOR OILFIELD PROCESSES, PHOSPHATE ESTER COMPOUNDS USEFUL IN GELLATION OF HYDROCARBONS AND METHODS FOR PRODUCTION AND USE THEREOF - Phosphate esters useful for gelling hydrocarbons in combination with a metal source are disclosed along with methods of preparation of the phosphate esters. Fouling in oil refinery towers has been attributed due to distillation of impurities present in phosphate esters used to gel hydrocarbons for oil well fracturing. The improved method of preparation of the phosphate ester results in a product that substantially reduces or eliminates volatile phosphorus, which is phosphorus impurities that distill up to 250° C., and increases the high temperature viscosity of the hydrocarbon gels formed using the phosphate esters. | 08-13-2009 |
20100069272 | ENHANCED CRUDE OIL RECOVERY - The present invention relates to the use of phosphate esters as surfactants in techniques for enhanced crude oil recovery from underground formations. The invention also relates to formulations that can be used in enhanced crude oil recovery methods and to be contacted with the rocks of underground formations. | 03-18-2010 |
20100075873 | Low volatile phosphorous gelling agent - Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent for use in oil recovery. Generally a proppant, delayed gel breaker and other modifiers are added to the gelled hydrocarbon to improve the oil recovery process. The phosphate ester used in this method and composition for oil recovery has low volatility and good stability during hydrocarbon distillation resulting in improved distillation efficiency in a refinery. | 03-25-2010 |
20110136705 | PHOSPHATE ESTER OIL GELLANT - A composition and method of fracturing a subterranean formation. The composition includes: about 0.25 wt. % to about 3.0 wt. %, based on a weight of the hydrocarbon liquid, of a mixture of phosphate esters, said esters selected from the group consisting of: monoester PO(OR | 06-09-2011 |
20110160103 | Compressible Packer Fluids and Methods of Making and Using Same - A method of servicing a wellbore comprising placing a composition comprising a surfactant, brine, an oleaginous fluid, and optionally a co-surfactant in an annular space of the wellbore, wherein the composition forms a microemulsion under low shear conditions. | 06-30-2011 |
20110237470 | METHOD TO DECREASE VISCOSITY OF GELLED OIL - A method of decreasing the viscosity of a gelled organic-based fluid is disclosed. The method comprises combining an organic solvent, a gelling agent, and a metal crosslinker; forming the gelled organic-based fluid; and adding a chelating agent forming a complex with the metal to decrease the viscosity of the gelled organic-based fluid. The chelating agent may be chosen within nitrilotriacetic acid (NTA), citric acid; ascorbic acid, hydroxyethylethylenediaminetriacetic acid (HEDTA) or its salts, ethylenediaminetetraacetic acid (EDTA) or its salts, diethylenetriaminepentaacetic acid (DTPA) or its salts, phosphinopolyacrylate, thioglycolates, or a combination thereof. | 09-29-2011 |
20140051611 | Crosslinking Composition for Hydrocarbon Gels - A crosslinking composition for hydrocarbon gels containing phosphate ester gelling agents comprising a modified imidazoline or pyrimidine including an alkyl group (or unsaturated carbon chain) or of 10 to 22 carbon atoms, a polyamine, and ferric sulfate. The method of making the crosslinking agent features adding the polyamine after reaction of the other ingredients; unique gels formed with the crosslinking agent are particularly effective for LNG at very cold temperatures. | 02-20-2014 |
20140106993 | SYSTEMS AND METHODS FOR PROCESSING GLYCEROL - Systems and methods for processing glycerol into one or more products and uses thereof are provided. In one or more embodiments, a method for treating soil can include applying a partially oxidized reaction product to a soil. The partially oxidized reaction product can be prepared by decreasing a pH of a mixture that includes glycerol and fatty acids to produce a mixture that includes a glycerol-rich portion and a fatty acids-rich portion. The glycerol-rich portion can be reacted with at least one of an oxidant and a catalyst at conditions sufficient to produce the partially oxidized reaction product. | 04-17-2014 |
20140235512 | LOW VOLATILE PHOSPHOROUS GELLING AGENT - Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent for use in oil recovery. Generally a proppant, delayed gel breaker and other modifiers are added to the gelled hydrocarbon to improve the oil recovery process. The phosphate ester used in this method and composition for oil recovery has low volatility and good stability during hydrocarbon distillation resulting in improved distillation efficiency in a refinery. | 08-21-2014 |
20150080276 | PHOSPHORIC ESTER PREPARATIONS WITH REDUCED HYGROSCOPICITY - The present invention relates to phosphoric ester preparations with reduced hygroscopicity, to use of these as flame retardants and hydraulic fluids, and to polyurethanes which comprise the phosphoric ester preparations of the invention. | 03-19-2015 |