Phillips Petroleum Company

Earl Clark, Jr

Jimmie J Straw

George A Moczygemba

Howard F Efner

Rex L Bobsein

Carl A Uraneck

Lacey E Scoggins

Billy L Swanson

Howard B Irvin

W Delmar Johnson

Afif M Nesheiwat

Kenneth C Hoover

G Allan Stahl

Michael L Stephens

Clifford W Childers

Glenn F Kile

Wallace D Johnson

Roy E Reger

A process for producing a water-soluble polymer which can be useful in a subterranean formation is provided. The process comprises contacting a an olefinic compound and a thiol under a solution polymerization process for producing the water-soluble polymer.

Polymerization process

A process for removing sulfur dioxide in a fluid such as, for example, sulfolene or sulfolane, comprises circulating the fluid in a loop under conditions sufficient to effect the removal of sulfur dioxide from the fluid wherein the loop comprises at least one spraying device such as, for example, a spray nozzle.

Process for removing sulfur dioxide from fluids

A method for removing oligomers and non-polymeric impurities from poly(arylene sulfide) polymers and producing the polymers in easily recoverable granular form is provided in which a poly(arylene sulfide) polymer associated with oligomers and non-polymeric impurities is contacted with a solvent, water, and optionally, a base, at a sufficient temperature to substantially dissolve the polymer, oligomers and impurities; then the solution is cooled to a temperature at which the poly(arylene sulfide) precipitates while oligomers and impurities remain in solution, then the precipitated polymer is separated from the solution containing the oligomers and impurities. A polymer product produced by this method is also disclosed.

Production of granular poly(arylene sulfide) polymers containing reduced

A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture to an impurities removal vessel containing a freezing point depressant which comprises an aromatic compound; (3) removing the impurities; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting the impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering the sulfolane compound.

Process for producing sulfolane compounds

Poly(arylene sulfide sulfone) polymers recovered from a reaction mixture produced by contacting at least one haloaromatic sulfone, at least one sulfur source, and a polar organic compound at polymerization conditions are treated with (1) a haloaromatic sulfone mixture comprising at least one haloaromatic sulfone and a polar organic compound followed by contacting the polymer with (2) a zinc compound. The two-step treatment improves the melt stability and extrudate quality of the polymer.

Method of treating poly(arylene sulfide sulfone) polymers and polymers

A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture, at a temperature in the range of about 55.degree. C. to about 85.degree. C., to an impurities removal reactor containing a solvent; (3) removing the impurities under an elevated pressure to produce an impurities-reduced sulfolene compound; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting said impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering said sulfolane compound.

In an inverse emulsion polymerization system for producing water-soluble polymers from a monomer system comprising an N-vinyl lactam and/or a vinyl-containing sulfonic acid or salt thereof utilizing a surfactant system having (1) a surfactant with a bulky lipophilic portion and a hydrophilic portion and (2) a generally straight-chain monionic surfactant having a lipophilic hydrocarbon group and an OH-terminated hydrophilic group, i.e. an alcohol. Such a system having both the right HLB and the right chemical combination results in a stable emulsion for the polymerization of these particular water-soluble monomers.

Surfactant system of polyethoxylated compounds and glyceride compounds

A method of rapidly dissolving a water-soluble polymer into water. A water-in-oil latex having the polymer dispersed in the water phase thereof is added to the water. Phenol (C.sub.6 H.sub.5 OH) is added to the water in an amount sufficient to promote rapid inversion of the latex and release of the polymer into the water. When used in connection with certain latexes, phenol also functions to increase the viscosity of the water by as much as three times or more that achieved by complete inversion of the latex and release of the polymer into the water alone.

Use of phenol as rapid inverse latex inversion promoter and solution

In a first embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises at least one dihaloaromatic compound. The amount of alkali metal carboxylate present during the polymerization process ranges from about 0.01 to about 0.03 mole per each mole of sulfur present in the resulting arylene sulfide resin. The total amount of water present during the polymerization process ranges from about 1.02 to about 2.1 moles per each mole of sulfur present in the resulting arylene sulfide resin. In a second embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises a mixture of at least one dihaloaromatic compound and at least one polyhaloaromatic compound having more than two halogen substituents per molecule. The ranges of the amount of alkali metal carboxylate present during the polymerization process and the total amount of water present during the polymerization process are identical to those amounts disclosed in the first embodiment. The amount of polyhaloaromatic compound initially present ranges from about 0.0001 to about 0.01 mole per each mole of dihaloaromatic compound present prior to the initiation of the polymerization process.

Higher molecular weight arylene sulfide resin and process for its

Methods and compositions for acid treating subterranean formations penetrated by well bores are provided. The compositions are each comprised of an aqueous acid solution, one or more acrylamide polymers dissolved in the acid solution, a liquid hydrocarbon dispersed in the acid solution, and one or more nonionic surface active agents having at least one reactive hydroxyl group per molecule. The acrylamide polymer or polymers increase the viscosity of the acid solution and the surface active agent or agents interact with the polymer of polymers whereby stabilized high viscosity results. The subterranean formation acid treating methods of the invention are carried out by introducing the high viscosity acid compositions therein, allowing the compositions to react until spent and recovering the compositions.

Compositions for acid treating subterranean formations

In an inverse emulsion polymerization system for producing water-soluble polymers from a monomer system comprising an N-vinyl lactam and/or a vinyl-containing sulfonic acid or salt thereof utilizing a surfactant system having (1) a surfactant with a bulky lipophilic portion and a hydrophilic portion and (2) a generally straight-chain nonionic surfactant having a lipophilic hydrocarbon group and an OH-terminated hydrophilic group, i.e. an alcohol. Such a system having both the right HLB and the right chemical cobination results in a stable emulsion for the polymerization of these particular water-soluble monomers.

Inverse emulsion polymerization

An improved process for the production of high molecular weight aromatic sulfide/sulfone polymer comprising contacting under suitable polymerization conditions: (a) an organic amide, (b) an alkali metal sulfide or hydrosulfide, (c) water, and (d) a dihaloaromatic sulfone wherein the molar ratio of (a) to (b) is about 2:1 to about 24:1, the improvement comprising employing a molar ratio of (a) to (c) of about 0.4:1 to about 1.3:1.

Production of aromatic sulfide/sulfone polymers

Methods and compositions for acid treating subterranean formations penetrated by well bores are provided. The compositions are each comprised of an aqueous acid solution, one or more acrylamide polymers dissolved in the acid solution, a liquid hydrocarbon dispersed in the acid solution, and one or more nonionic surface active agents having at least one reactive hydroxyl group per molecule. The acrylamide polymer or polymers increase the viscosity of the acid solution and the surface active agent or agents interact with the polymer or polymers whereby stabilized high viscosity results. The subterranean formation acid treating methods of the invention are carried out by introducing the high viscosity acid compositions therein, allowing the compositions to react until spent and recovering the compositions.

Methods and compositions for acid treating subterranean formations

In an inverse emulsion polymerization system for producing water-soluble polymers from a monomer system comprising an N-vinyl lactam and/or a vinyl-containing sulfonic acid or salt thereof utilizing a surfactant system having (1) a surfactant with a bulky lipophilic portion and an OH-containing hydrophilic portion and (2) a generally straight-chain nonionic surfactant having a lipophilic hydrocarbon group and an OH-terminated hydrophilic group, i.e. an alcohol. Such a system having both the right HLB and the right chemical combination results in a stable emulsion for the polymerization of these particular water-soluble monomers.

Inverse emulsion polymerization with sorbitan fatty acid esters and

A water-in-oil emulsion polymerization process is provided for preparing water-in-oil latexes of water-soluble polymers of ethylenically unsaturated monomers. The process utilizes as a chain transfer agent a thiol having the formula HS-Y(Z).sub.x wherein Y is a hydrocarbyl radical having 2-5 carbons and a valence of x+1; Z is selected from the group consisting of --OH, --CO.sub.2 H and --CO.sub.2 R wherein R is an alkyl radical of 1-3 carbon atoms; x is an integer of 1 or 2 and wherein the total number of carbon atoms per molecule of the thiol is 2-7.

Growing community of inventors

Bartlesville, OK, United States of America

Earl Clark, Jr