A method to increase the volume of a wellbore, said method comprising:- providing a wellbore located within a rock formation;- providing a modified acid composition comprising at least two components: a first component being an amino acid and a second component being a mineral acid;wherein said first component and second component being present a molar ratio ranging from 1:3 to 1:12.5;- injecting said modified acid composition into said wellbore at a pressure below fracking pressure;- allowing the modified acid composition to be in contact with the formation for a period of time long enough to allow the modified acid to create a series of wormholes and consequently increase the surface area fluidly connected to said wellbore to enhance the absorption capacity of carbon dioxide injected into said wellbore.
An aqueous caustic composition comprising an emulsion for use in removing petroleum-contaminated barium sulfate scale from a surface contaminated with such, said composition comprising:o a chelating agent and a counterion component selected from the group consistingof: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA;TEAH4DTPA; and TBAH5DTPA;o a scale removal enhancer;o a non-ionic surfactant; and- and said emulsion portion comprising:o water;o monoethanolamine (MEA);o a sulfonate compound selected from the group consisting of: DDBSA; petroleum sulfonate; and disulfonate surfactants; or alcohol ethoxylate surfactant such as Lutensol XL9;o an alkyl polyglycolide selected from the group consisting of: Triton BG-10; Triton CG-110, Triton CG-425, Basoclean 80, Basoclean 100; ando an oil phase which can be a napthenic oil; a paraffinic oil or a terpene.
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
3.
HIGH ALKALINE HIGH FOAM CLEANER FOR MARITIME APPLICATIONS
An aqueous foaming caustic composition for cleaning a cargo hold on a ship, said composition comprising:- a caustic component;- water;- a nonionic alkyl polyglucoside surfactant;- a polyacrylate polymer surfactant; and- optionally, a polycarboxylate low-foaming anionic surfactant as a foam controlling agent.
A chelating agent-free composition for use in metalworking cleaning, wherein said composition comprises:- water;- a caustic component;- a solvent;- an anionic surfactant;- a nonionic surfactant;- optionally, a corrosion inhibitor;- a fatty alcohol polyglycol ether; and- a hydrophobic component.
B08B 3/08 - Cleaning involving contact with liquid the liquid having chemical or dissolving effect
C10M 173/00 - Lubricating compositions containing more than 10% water
C11D 1/24 - Sulfonic acids or sulfuric acid estersSalts thereof derived from aromatic compounds containing ester or ether groups directly attached to the nucleus
An aqueous caustic composition for cleaning a cargo hold on a ship, said composition comprising:- a caustic component;- water;- a polyacrylate polymer surfactant; and- a microemulsion comprising:o a nonionic alkyl polyglucoside surfactant;o water;o an alkanolamine;o DDBSA;o a hydrophobic component; and- optionally, a polycarboxylate low-foaming anionic surfactant as a foam controlling agent.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; an alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; an alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; and a metal iodide or iodate. optionally, a phosphonic acid derivative may be added.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1 and formic acid or a derivative thereof.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; and an amino acid, and optionally, a phosphonic acid derivative.
An aqueous synthetic acid composition for use in oil industry activities, said composition comprising: lysine and hydrogen chloride in a molar ratio ranging from 1:3 to 1:12.5, preferably from more than 1:5 to 1:8.5; it can also further comprise a metal iodide or iodate; an alcohol or derivative thereof. Said composition demonstrates advantageous properties over known synthetic acids at temperatures above 90.degree.C. Said composition is useful in various oil and gas industry operations. Preferred embodiments of said composition providing substantial advantages in matrix acidizing by increasing the effectiveness of wormholing compared to conventional mineral acids such as HCl.
An aqueous caustic composition comprising: a caustic component; an alkanolamine additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to acid; and water. Uses and methods of using such compositions are also disclosed.
An aqueous caustic composition comprising: a caustic component; an amino acid additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to an acid; and water, wherein the caustic component and the amino acid additive are present in a molar ratio ranging from 15:1 to 5:1. Methods of using such compositions are also disclosed.
An aqueous modified acid composition for use in oil industry activities, said composition comprising: an amino acid, an alkanolamine and strong acid wherein the mineral acid : alkanolamine/amino acid are present in a molar ratio of not more than 15:1, preferably not more than 10:1; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.
C09K 8/00 - Compositions for drilling of boreholes or wellsCompositions for treating boreholes or wells, e.g. for completion or for remedial operations
C09K 8/52 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; - removing the tool form the wellbore; and - initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
A method for the stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a location slightly beyond a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation; - removing the tool form the wellbore; and - initiating the stimulation of the perforated area using a stimulation fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.
A corrosion inhibition package for use with an aqueous acid composition, said package comprising: a terpene; a cinnamaldehyde or a derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are compositions comprising said corrosion inhibitor package. Preferably, the corrosion inhibition package meets the environmental requirements for classification as yellow according to the Norwegian North Sea offshore drilling regulatory requirements.
C09K 8/52 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/02 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions
A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; - removing the tool form the wellbore; and - initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
Method of minimizing pitting corrosion at temperatures above 130.degree.C, wherein said method comprises: providing an acidic fluid comprising an alkylsulfonic acid; providing at least one corrosion inhibitor compound comprising an organic compound comprising at least two aldehyde functional groups; combining said acidic fluid with said at least one corrosion inhibitor compound; exposing said mixed fluid to a metallic surface at a temperature of at least 130.degree.C; and allowing said mixed fluid sufficient time of exposure to a metal to accomplish a pre-determined function.
C09K 8/52 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/02 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions
E21B 43/27 - Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
An inhibition corrosion package for use with an acidic composition, where the package comprises a dialdehyde-containing hydrocarbon component; at least one surfactant; optionally, a propargyl alcohol or derivative thereof; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions.
C09K 8/52 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/02 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions
A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; - removing the tool form the wellbore; and - initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
E21B 41/02 - Equipment or details not covered by groups in situ inhibition of corrosion in boreholes or wells
22.
USE OF AN ARYLSULFONIC ACID IN OIL INDUSTRY ACTIVITIES
An organic acid composition for use in oil industry activities, said composition comprising an arylsulfonic acid in water as well as the use of said composition to perform various operations in the oil industry. There is also disclosed a solid acid composition comprising a corrosion inhibitor ready for dissolution and use.
C09K 8/52 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/02 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions
The present invention discloses a novel aqueous composition for use in removing petroleum contaminated barium sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: LisDTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a scale removal enhancer; and a non-ionic surfactant. There is also disclosed methods to use such compositions.
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 13/00 - Etching, surface-brightening or pickling compositions
C23G 1/00 - Cleaning or pickling metallic material with solutions or molten salts
A mud acid composition comprising: an inhibited hydrofluoric acid aqueous composition, said composition comprising: - hydrofluoric acid in solution; and an alkanolamine; and an acid having a pKa value of less than 3; wherein said alkanolamine and hydrofluoric acid are present in a molar ratio of at least 1.1:1. Said mud acid composition can optionally comprise a corrosion inhibitor package and be used in methods for removing silica and silicate deposits.
Method of spearheading an acid into a wellbore adapted to avoid the gelation of a friction reducer polymer, wherein said method comprises: injecting a synthetic or modified acid composition down a wellbore, said composition comprising: a synthetic or modified acid; a solvent; and a chelating agent, optionally the composition may comprise a corrosion inhibitor package; allowing sufficient time for the synthetic or modified acid composition to react with material which require acidic treatment; and injecting a fracturing composition comprising a liquid and a friction reducing polymer down the wellbore.
A novel method for the placement of spearhead acid and stimulation of a hydrocarbon -bearing formation, said method comprising the steps of: providing a wellbore in need of multiple stages of stimulation; inserting an isolation plug in the wellbore at a predetermined location; inserting a perforating tool and a spearhead or breakdown acid into the wellbore simultaneously exposing the wireline and tool to the acid; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation; removing the tool form the wellbore; and initiating the stimulation of the perforated area using a stimulation fluid.
A novel method for the placement of spearhead acid and stimulation of a hydrocarbon-bearing formation, said method comprising the steps of providing a wellbore in need of multiple stages of stimulation; inserting an isolation plug in the wellbore at a predetermined location; inserting a perforating tool and a spearhead or breakdown acid into the wellbore simultaneously exposing the wireline and tool to the acid; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation; removing the tool form the wellbore; and initiating the stimulation of the perforated area using a stimulation fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
ABSTRACT An aqueous modified or synthetic acid composition comprising: an acid; a first component comprising: an amine and a carboxylic acid group; a second component comprising: an amine and a sulfonic acid group; wherein said first component and said acid are present in a molar ratio ranging from 1:3 to 1:15, more preferably from 1:3 to 1:12.5. Said acid composition is preferably used in acidizing or stimulating dolomite formations. Disclosed also are methods involving the use of said acid composition. Date Recue/Date Received 2020-12-18
A method to increase the stability of an aqueous composition comprising alkanolamine, said method comprising the steps of: - providing a vessel; - adding a pre-determined amount of water into said vessel; - adding a pre-determined amount of an acid to said water; and - adding an alkanolamine (such as MEA) to said vessel; and - mixing the blend until resulting mixture is homogeneous; wherein the resulting aqueous composition of alkanolamine and said acid has a pH ranging from 7 to 11, is stable down to a temperature of -5 C and said resulting aqueous composition comprising said alkanolamine and HC1 in a molar ratio ranging from 1:1 to 1:0.1 of alkanolamine:acid.
Method of minimizing pitting corrosion at temperatures above 130 C, wherein said method comprises: providing an acidic fluid comprising an alkylsulfonic acid; providing at least one corrosion inhibitor compound comprising an organic compound comprising at least two aldehyde functional groups; combining said acidic fluid with said at least one corrosion inhibitor compound; exposing said mixed fluid to a metallic surface at a temperature of at least 130 C; and allowing said mixed fluid sufficient time of exposure to a metal to accomplish a pre-determined function.
A synthetic. acid composition for replacement of hydrochloric acid in industrial activities requiring large amounts of hydrochloric acid, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; and/or alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.
An organic acid composition for use in oil industry activities, said composition comprising; methane sulphonic acid; a metal iodide or iodate; and an alcohol or derivative thereof. The uses include: injection/disposal in wells; squeezes and soaks or bullheads; acid fracturing; acid washes or matrix stimulations; fracturing spearheads (breakdowns); pipeline scale treatments; cement breakdowns or perforation cleaning; pH control; and de-scaling applications.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; and an alcohol or derivative thereof optionally, it may further comprise a phosphonic acid derivative.
A synthetic acid composition for use in oil industry activities, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; cinnamaldehyde or a derivative thereof; optionally, it may further comprise a phosphonic acid derivative; as well as a metal iodide or iodate; and an alcohol or derivative thereof.
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
E21B 43/22 - Use of chemicals or bacterial activity
A synthetic caustic composition for use in oil & gas industry activities, said composition comprising: metal hydroxides; an amino acid; urea; a sodium silicate and water.
C09K 8/00 - Compositions for drilling of boreholes or wellsCompositions for treating boreholes or wells, e.g. for completion or for remedial operations
C10G 19/04 - Refining hydrocarbon oils, in the absence of hydrogen, by alkaline treatment with aqueous alkaline solutions containing solubilisers, e.g. solutisers
C10G 75/04 - Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
C23F 15/00 - Other methods of preventing corrosion or incrustation
C23G 1/00 - Cleaning or pickling metallic material with solutions or molten salts
36.
NOVEL MODIFIED ACID COMPOSITIONS AS ALTERNATIVES TO CONVENTIONAL ACIDS IN THE OIL AND GAS INDUSTRY
An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.
A23L 29/212 - StarchModified starchStarch derivatives, e.g. esters or ethers
B01J 49/00 - Regeneration or reactivation of ion-exchangersApparatus therefor
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
C09K 8/00 - Compositions for drilling of boreholes or wellsCompositions for treating boreholes or wells, e.g. for completion or for remedial operations
C11D 3/00 - Other compounding ingredients of detergent compositions covered in group
C23G 1/02 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions
An aqueous caustic composition comprising: a caustic component; an additive adapted to provide an extended buffering effect to the caustic composition when such is exposed to an acid; and water. Methods of using such compositions are also disclosed.
An aqueous caustic composition comprising: a caustic component; a caustic component present in a concentration of up to 40 wt % of the aqueous caustic composition; an additive adapted to provide an extended buffering effect to the aqueous caustic composition when such is exposed to an acid, wherein the additive is present in a concentration of between 2% wt % and 25 wt % of the aqueous caustic composition; and water, wherein said additive is glycine and the aqueous caustic composition has a freezing point ranging from ¨30 C. to ¨40 C. Such buffered caustic compositions are used to adjust the pH more precisely in a desired range to avoid breakdown of crosslinking in guar gels.
An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.
B01J 49/50 - Regeneration or reactivation of ion-exchangersApparatus therefor characterised by the regeneration reagents
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
An inhibition corrosion package for use with an acidic composition, where the package comprises a terpene component; a propargyl alcohol or derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions.
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/06 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
E21B 43/22 - Use of chemicals or bacterial activity
E21B 43/27 - Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
41.
USING SYNTHETIC ACID COMPOSITIONS AS ALTERNATIVES TO CONVENTIONAL ACIDS IN THE OIL AND GAS INDUSTRY
An aqueous synthetic acid composition for use in oil industry activities, said composition comprising: lysine and hydrogen chloride in a molar ratio ranging from 1:3 to 1:12.5, preferably from more than 1:5 to 1:8.5; it can also further comprise a metal iodide or iodate; an alcohol or derivative thereof. Said composition demonstrates advantageous properties over known synthetic acids at temperatures above 90.degree.C. Said composition is useful in various oil and gas industry operations. Preferred embodiments of said composition providing substantial advantages in matrix acidizing by increasing the effectiveness of wormholing compared to conventional mineral acids such as HCl.
An inhibited hydrofluoric acid aqueous composition, said composition comprising: hydrofluoric acid in solution; and an alkanolamine; wherein said alkanolamine and hydrofluoric acid are present in a molar ratio of at least 1:1.
An inhibited hydrofluoric acid aqueous composition, said composition comprising: hydrofluoric acid in solution; and a weak base selected from the group consisting of: lysine, arginine, histidine, glutamine, asparagine, tryptophan, and tyrosine; wherein said weak base and hydrofluoric acid are present in a molar ratio of at least 1:1. Also disclosed is a mud acid using this inhibited acid composition.
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
The present invention discloses a novel aqueous composition for use in removing mixed sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a dissolution enhancer; optionally a compound such as sodium gluconate or the like and a carboxyl-containing fructan such as carboxymethyl inulin. There is also disclosed methods to use such compositions.
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
A liquid corrosion inhibitor composition for use with acid compositions for use in industrial activities, said corrosion inhibitor composition comprising: a thiourea derivative; a first type of amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof; a second type of amphoteric surfactant; and a solvent.
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/74 - Eroding chemicals, e.g. acids combined with additives added for specific purposes
C23F 11/04 - Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
C23G 1/06 - Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
46.
PROCESS TO MANUFACTURE INHIBITED HYDROFLUORIC ACID COMPOSITION
A process for controlling the heat generated during the manufacture an inhibited hydrofluoric acid aqueous composition comprising: - hydrofluoric acid in solution; - a weak base; and - an alkanolamine; said process comprising the steps of: - providing a pre-determined amount of weak base; - adding a pre-determined amount of said hydrofluoric acid to said weak base and obtaining a solution; - adding said alkanolamine to the resulting solution of hydrofluoric acid and weak base; - mixing until all components are dissolved; wherein said alkanolamine and hydrofluoric acid are present in a molar ratio of at least 1: 1.
A method to increase the stability of an aqueous composition comprising lysine monohydrochloride, said process comprising the steps of:- providing a vessel;- adding a pre-determined amount of water into said vessel;- adding a pre-determined amount of an acid to said water; and- adding lysine monohydrochloride to said vessel;- mixing the resulting blend until said lysine monohydrochloride is fully dissolved; wherein the resulting aqueous composition of amino acid salt having a pH of no less than 2.5-3, is stable down to a temperature of 10 C, preferably, as low as 5 C, and said composition comprising lysine and HC1 in a molar ratio containing an excess of acid of up to 5 vol. %.
The present invention discloses a novel aqueous composition for use in removing petroleum- contaminated barium sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a scale removal enhancer; a non-ionic surfactant; and a hydrotrope. There is also disclosed methods to use such compositions.
C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
49.
HIGH ALKALINE HIGH FOAM CLEANERS WITH CONTROLLED FOAM LIFE
A caustic composition for cleaning apparatus, said composition comprising: a caustic component; a first low foaming anionic surfactant; a second nonionic surfactant; and a foam controlling agent comprising an amino acid. Methods of using such compositions are also disclosed.
A method to increase the temperature stability of a first blend and a second blend used in the preparation of a reconstituted aqueous composition comprising lysine monohydrochloride, said process comprising the steps of: - providing a first vessel and a second vessel; - adding to said first vessel a pre-determined amount of water; - adding to said first vessel a pre-determined amount of a first acid to said water; and - adding a pre-determined amount of lysine monohydrochloride to said first vessel; and - mixing the contents of said first vessel until said lysine monohydrochloride is fully dissolved creating said first blend; - adding to said second vessel a second pre-determined amount of a second acid; and - adding to said second vessel a second pre-determined amount of lysine monohydrochloride; and - mixing the contents of the second vessel until said lysine monohydrochloride is fully dissolved creating said second blend; wherein the first blend has a pH of no more than 1, is stable down to a temperature at least as low as -5 C and said first blend comprising lysine and HC1 in a molar ratio ranging from 1:20 to 1:15 and stable at a temperature of at least as low as -5 C and wherein the second blend has a pH of no less than 2.5, is stable down to a temperature at least as low as -5 C and said second blend comprising lysine and HC1 in a molar ratio containing an excess of HC1 of up to 0.2 mole.
C02F 5/12 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
A semi-synthetic fire-resistant hydraulic fluid composition comprising: - water in an amount ranging from 25-65wt%; - a hydrophilic co-solvent present in an amount ranging from 5 to 20wt%; - an oil component present in an amount ranging from 1-30wt%; - a lubricant present in an amount ranging from 1 to 10 wt%; - a vapor corrosion inhibitor (VCI) present in an amount ranging from 1 to 10 wt%; - a neutralizing agent which neutralizes the tall oil fatty acid) present in an amount ranging from 1 to 10 wt%; - a nonionic surfactant present in an amount ranging from 5 to 25 wt%; - an anionic surfactant present in an amount ranging from 5 to 25 wt%; - a corrosion inhibitor present in an amount ranging from 0.5wt % to 5wt%; - an anti-foaming agent present in an amount ranging from 0.5wt % to 5wt%; and - a biocide present in an amount ranging from 0.5wt % to 5wt%. A synthetic composition is also disclosed.
A synthetic acid composition for replacement of hydrochloric acid in industrial activities requiring large amounts of hydrochloric acid, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; an alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.
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