EP3189094A1 - Hydratation améliorée de polymères associatifs - Google Patents
Hydratation améliorée de polymères associatifsInfo
- Publication number
- EP3189094A1 EP3189094A1 EP15760172.5A EP15760172A EP3189094A1 EP 3189094 A1 EP3189094 A1 EP 3189094A1 EP 15760172 A EP15760172 A EP 15760172A EP 3189094 A1 EP3189094 A1 EP 3189094A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surfactants
- polymers
- hydration
- meth
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/24—Homopolymers or copolymers of amides or imides
- C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/24—Homopolymers or copolymers of amides or imides
- C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Definitions
- the present invention relates to the field of polymers called "associative" which are used, particularly in the field of petroleum extraction, to modify the rheology of aqueous liquid media, in particular to increase the viscosity or even gel. More specifically, the invention relates to the hydration of this type of associative polymers.
- the associative polymers are generally amphiphilic polymers bearing hydrophobic groups (typically pendant hydrophobic chains bound to a hydrophilic skeleton), and which self-associate in aqueous medium by phase microseparation of these hydrophobic groups.
- the hydration of associative polymers in aqueous medium is furthermore more difficult when the aqueous medium in which it is desired to dissolve or disperse the polymers is a saline medium.
- the hydration of the associative polymers employed in petroleum extraction is often very long and difficult when a brine, for example seawater, is used to hydrate the polymers.
- An object of the present invention is to provide an effective method of hydration of associative polymers of the aforementioned type, which allows the hydration of the polymers in a reduced time, including by employing polymers with a strongly hydrophobic nature and / or presence of salts.
- the present invention proposes to use surfactants of the type envisaged in the state of the art, but under particular conditions optimizing their effect on the kinetics of hydration, namely by putting intimate contact between the polymers and surfactants.
- the subject of the present invention is a process for the hydration of associative polymers (P), leading to the preparation of an aqueous composition comprising the said polymers (P) in the form of a solution or d a gel comprising a step (E) of adding water to a solid composition (C) comprising:
- surfactants (S) capable of improving the hydration of these polymers, wherein said solid composition (C) is as obtained by drying an aqueous composition comprising a mixture of the associative polymers (P) in the hydrated state and surfactants (S).
- the solid composition (C) used in the context of the present invention is a "as obtained” or “obtainable” composition by drying an aqueous composition comprising a mixture of the associative polymers (P) and surfactants (S) in the hydrated state, which means that it has all the characteristics of a composition obtained according to such a drying, but does not necessarily imply that it is effectively obtained by drying an aqueous composition comprising a mixture of associative polymers (P) and surfactants (S) in the hydrated state.
- the solid composition (C) can be obtained by any other means, some of which are explained in more detail below.
- the work that has been done by the inventors in the context of the present application has now made it possible to demonstrate that the use of the surfactant in the form of the composition (C) above, where it is schematically "premixed" with the polymers (P), leads to an optimization of the hydration, with in particular an extremely short hydration time compared to other modes introduction of surfactants.
- This optimization of the hydration makes it possible in particular to lead the hydration in a period less than that which is necessary by not performing the premix.
- the hydration of step (E) is conducted under these conditions.
- the hydration of step (E) is conducted in less than 5 hours, or even less than three hours, typically in less than one hour.
- this composition preferably comprises the associative polymers (P) and the surfactants (S) in a state in which the hydrophobic groups of the polymers interact with surfactants on a scale phase microseparation, whereby the effect of the polymers is optimized during step (E).
- the composition (C) which is used in the context of the present invention is a particular formulation of the associative polymers (P) and the surfactants (S) which is very easy to hydrate. Formulations of this type have been incidentally described in the past (for example in US Pat. No.
- Step (E) of the method that is the subject of the present invention may therefore also be described as a use of the composition (C) to improve the hydration of the associative polymers that it contains.
- the invention particularly relates to the use of the compositions (C) to form a solution or a gel of the polymers (P) in an aqueous fluid used in the petroleum field.
- the present invention relates to certain compositions (C) of the aforementioned type which, to the knowledge of the inventors, have never been described to date.
- the subject of the invention is in particular compositions which can not be obtained according to the process described in the aforementioned US Pat. No. 4,814,096, and in particular the compositions (C) of the above type, of type obtained by post-addition of the surfactants (S) to polymers (P) resulting from a micellar polymerization of the type described later in the present description.
- compositions (C) in which the polymers have a molar mass by weight Mw greater than 500,000 g / mol, preferably greater than 1,000,000 g / mol, especially between 2,000,000 and 10,000,000. g / mol (for example between 3,000,000 and 5,000,000 g / mol).
- step (E) of the process of the invention the solid composition (C) is brought into contact with water (typically by introducing the composition into water or by pouring water on the composition) .
- water typically by introducing the composition into water or by pouring water on the composition
- the polymer is brought into contact with water or with a composition comprising water and capable of ensuring the hydration of the polymer, for example an aqueous solution comprising salts, and in particular a brine, for example seawater or even water from hydrocarbon production wells.
- the water is added in step (E) in the form of a saline solution or a brine of ionic strength between 0.3 and 15 mol IL, the method of the invention.
- a saline solution or a brine of ionic strength between 0.3 and 15 mol IL, the method of the invention.
- the hydration method of the present invention which is particularly efficient, can be used in various fields, where the associative polymers can be rapidly hydrated from the composition (C).
- the process of the invention can be used to form solutions or aqueous gels intended for petroleum extraction, for example: for the preparation of fracturing and / or stimulation fluids for the production of fluids Completion
- amphiphilic polymers capable of gelling water (and, in practice, an aqueous medium) and which generally comprise a hydrophilic backbone and hydrophobic groups bonded to this backbone (typically hydrophobic units carrying pendant hydrophobic groups , generally present in a proportion of 0.1 to 5 mol% relative to all the monomer units present in the polymer).
- the hydrophobic groups present in the polymers (P) can be distributed specifically at the ends of the backbone, or more or less randomly along the hydrophilic chain.
- the hydrophobic groups present in the polymers (P) are concentrated in microblocks (typically, the polymers (P) then have a skeleton consisting of a sequence of hydrophilic units interrupted by blocks of some hydrophobic units. consecutive (typically of the order of 2 to 40, for example between 3 and 30.)
- Polymers (P) adapted for this purpose may for example be obtained by micellar polymerization, in particular according to the method described in WO 2013/060741 .
- micellar polymerization or “micellar radical polymerization” is used herein to mean a synthesis of block polymers of the multiblock type by copolymerization of hydrophilic monomers and of hydrophobic monomers in an aqueous dispersing medium (typically water or a mixture of water and water). alcohol) which includes:
- hydrophilic monomers in the solubilized or dispersed state in said medium
- the hydrophobic monomers present within micelles of surfactants employed in micellar polymerization may be monomers which, in themselves, have the property of forming micelles without the need to add additional surfactants (so-called “auto-monomers”). -micellizable “in the following description).
- the surfactant employed can be the self-micellizable hydrophobic monomer itself, employed without any other surfactant, although the presence of such an additional surfactant is not excluded.
- hydrophobic monomers within surfactant micelles this concept also encompasses (i) hydrophobic monomers present in surfactant micelles other than these monomers (ii) ) monomers comprising at least one part or a hydrophobic block and forming by themselves the micelles in an aqueous medium.
- the two modes (i) and (ii) above are compatible and can coexist (hydrophobic monomers in micelles formed by another self-micellizable monomer for example, or else micelles comprising a combination of surfactants and self-micellizable monomers) .
- micellar solution In micellar polymerization, the hydrophobic monomers contained in the micelles are called "micellar solution".
- the micellar solution to which reference is made is a micro-heterogeneous system which is generally isotropic, optically transparent and thermodynamically stable.
- micellar solution of the type used in micellar polymerization is to be distinguished from a microemulsion.
- a micellar solution is formed at any concentration exceeding the critical micellar concentration of the surfactant employed, with the only condition that the hydrophobic monomer is soluble at least to a certain extent within the internal space of the micelles. .
- a micellar solution also differs from an emulsion due to the absence of an internal homogeneous phase: the micelles contain a very small number of molecules (less than 1000 typically, in general less than 500 and typically from 1 to 100, with the more often 1 to 50 monomers and at most a few hundred surfactant molecules when a surfactant is present) and the micellar solution generally has physical properties similar to those of surfactant micelles without monomers. Moreover, most often, a micellar solution is transparent vis-à-vis visible light, given the small size of the micelles that does not lead to refraction phenomena, unlike the drops of an emulsion, which refract the light and confers on it its hazy or characteristic white appearance.
- micellar polymerization technique results in characteristic block polymers that each contain several hydrophobic blocks of substantially the same size and where this size can be controlled. Indeed, given the quartering of hydrophobic monomers in the micelles, each hydrophobic blocks formed and controlled size and substantially contains a number n H defined hydrophobic monomers, the number n H can be calculated as follows (Macromolecular Chem. Physics , 202, 8, 1384-1397, 2001):
- N agg is the aggregation number (aggregation number) of the surfactant, which reflects the number of surfactants present in each micelle
- [M H ] is the molar concentration of hydrophobic monomer in the medium
- surfactant is the molar concentration of surfactant in the medium
- cmc is the critical micellar (molar) concentration
- micellar polymerization technique thus allows interesting control of the hydrophobic units introduced into the polymers formed, namely:
- the polymers (P) are synthesized according to a controlled micellar radical polymerization step in which an aqueous medium (M) is brought into contact with: hydrophilic monomers solubilized or dispersed in said aqueous medium (M) );
- hydrophobic monomers in the form of a micellar solution ie containing, in the dispersed state in the medium (M), micelles of surfactants (preferably distinct from the surfactants (S), although it is possible according to certain mode of using the surfactants (S) to perform this micellar polymerization) comprising these hydrophobic monomers (this dispersed state may in particular be obtained using at least one surfactant); at least one radical polymerization initiator, this initiator being typically water-soluble or water-dispersible; and
- At least one radical polymerization control agent at least one radical polymerization control agent.
- radical polymerization control agent is meant herein a compound capable of extending the life time of the growing polymer chains in a polymerization reaction and imparting to the polymerization a living or controlled character.
- This control agent is typically a reversible transfer agent as implemented in the controlled radical polymerizations designated under the terminology RAFT or MADIX, which typically implement a method of transfer reversible addition-fragmentation, such as those described for example in WO96 / 30421, WO 98/01478, WO 99/35178, WO 98/58974, WO 00/75207, WO 01/42312, WO 99/35177, WO 99/31144, FR2794464 or WO 02/26836.
- Other types of control agent may be envisaged (for example of the type used in CRP or ATRP).
- control agent employed in step (E) may be a polymer chain resulting from a controlled radical polymerization and carrying a group capable of controlling a radical polymerization (so-called "living" polymer chain ", Of a type well known in itself).
- control agent can for example answer the formula (A) below (AT)
- a polymer chain preferably hydrophilic or hydrodispersible when the agent is implemented in step (E).
- the groups R 1 or Z when substituted, may be substituted with optionally substituted phenyl groups, optionally substituted aromatic groups, saturated or unsaturated carbon rings, saturated or unsaturated heterocycles, or alkoxycarbonyl or aryloxycarbonyl groups ( -COOR), carboxy (-COOH), acyloxy (-O2CR), carbamoyl (-CONR2), cyano (-CN), alkylcarbonyl, alkylarylcarbonyl, arylcarbonyl, arylalkylcarbonyl, phthalimido, maleimido, succinimido, amidino, guanidimo, hydroxy (-OH ), amino (-NR2), halogen, perfluoroalkyl C n F 2n + 1, allyl, epoxy, alkoxy (-OR), S-alkyl, S-aryl, groups having a hydro
- the polymers (P) have a high molar mass, typically a weight average molar mass Mw of at least 500,000 g / mol, for example greater than or equal to 1 000 000 g / mol, in particular greater than 2 000 000 g / mol with theoretical weight average molar masses generally remaining below 10 000 000 g / mol (reference is made here to the theoretical molar mass because the actual measurement is generally difficult to measure for polymers of very high mass), typically between 3,000,000 and 5,000,000 g / mol.
- Mw weight average molar mass Mw of at least 500,000 g / mol
- Polymers (P) of interest according to the invention include hydrophobic microblocks of 2 to 40, for example 3 to 30, consecutive theoretical units with carbon, aliphatic (especially alkyl) or aromatic chains, typically having from 6 to 30 atoms. carbon, for example between 8 and 22 carbon atoms, especially between 10 and 18 carbon atoms.
- the associative polymers (P) may comprise:
- hydrophilic monomeric units typically constituting the "backbone” of the polymer
- monomeric units chosen from: ethylenically unsaturated carboxylic acids, sulphonic acids and phosphonic acids, and / or its derivatives such as acrylic acid (AA), methacrylic acid, ethacrylic acid, ⁇ -chloroacrylic acid, acid crotonic acid, maleic acid, maleic anhydride, itaconic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid, fumaric acid, monoesters of monoethylenically unsaturated dicarboxylic acids having 1 to 3, preferably 1 to 2, carbon atoms, for example, monomethyl maleate, vinylsulfonic acid, (meth) allylsulfonic acid, sulfoethyl acrylate, sulfoethyl methacrylate, acrylate sulfopropyl, sulfopropyl meth
- the hydrophilic monomeric units present in the polymers (P) comprise acrylic acid (AA).
- the monomer units are all acrylic acids, but it is also conceivable to use them as monomers a mixture comprising, inter alia, acrylic acid, in admixture with other hydrophilic monomers.
- the hydrophilic monomeric units present in the polymers (P) comprise (meth) acrylic acid and / or (meth) acrylamido monomers.
- the monomers employed in the process of the invention are in particular acrylic acid, methacrylic acid, and / or their salts, and / or their mixtures.
- the term "(meth) acrylic acid” includes methacrylic acid, acrylic acid and mixtures thereof.
- the term “(meth) acrylate” includes methacrylate, acrylate and mixtures thereof.
- the term “(meth) acrylamide / (meth) acylamido” includes methacrylamide / methacrylamido, acrylamide / racrylamido and mixtures thereof.
- the monomers used in step (E) comprise (and typically consist of) (meth) acrylamide monomers, or more generally (meth) acrylamido monomers, including:
- acrylamido monomers namely, acrylamide, its sulfonate derivative (AMPS), quaternary ammonium (APTAC) and sulfopropyl dimethylammonium propyl acrylamide;
- methacrylamido monomers such as, sulfopropyl dimethylammonium propyl methacrylamide (SPP), sulfohydroxypropyl dimethyl ammonium propyl methacrylamido.
- SPP sulfopropyl dimethylammonium propyl methacrylamide
- hydrophobic monomeric units As hydrophobic monomeric units (advantageously grouped into hydrophobic microblocks typically comprising from 2 to 40 consecutive units interrupting the "hydrophilic skeleton" of the polymer), monomeric units chosen from:
- each of R b and R c represents, independently:
- alkyl group preferably chlorinated and / or fluorinated, more preferably perchlorinated or perfluorinated; ⁇ , ⁇ -ethylenically unsaturated mono-, dicarboxylic acid esters with C 2 -C 30 alkanols, for example methyl ethacrylate, ethyl (meth) acrylate, ethyl ethacrylate, meth) n-propyl acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, sec-butyl (meth) acrylate, tert-butyl (meth) acrylate, ethacrylate tert-butyl, n-hexyl (meth) acrylate, n-heptyl (meth) acrylate, n-octyl (meth) acrylate, 1,1,3,3-tetramethylbutyl (meth) acrylate ⁇
- esters of vinyl or allyl alcohol with C1-C30 monocarboxylic acids for example, vinyl formate, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl laurate, vinyl stearate, vinyl propionate vinyl versatate and mixtures thereof;
- ethylenically unsaturated nitriles such as acrylonitrile, methacrylonitrile and mixtures thereof
- ⁇ , ⁇ ethylenically unsaturated mono- and di-carboxylic acid esters with C3-C30 alkanediols for example, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate , 3-hydroxypropyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, 6-hydroxyhexyl acrylate, 6-hydroxybutyl methacrylate, hydroxyhexyl, 3-hydroxy-2-ethylhexyl acrylate and 3-hydroxy-2-ethylhexyl methacrylate;
- N-vinyllactams and its derivatives such as, N-vinyl-5-ethyl-2-pyrrolidone, N-vinyl-6-methyl-2-piperidone, N-vinyl-6-ethyl-2-piperidone, N-vinyl-7-methyl-2-caprolactam and N-vinyl-7-ethyl-2-caprolactam;
- esters of ⁇ , ⁇ -ethylenically unsaturated mono- and dicarboxylic acids with amino alcohols for example N, N-dimethylaminocyclohexyl (meth) acrylate;
- amides of ⁇ , ⁇ -ethylenically unsaturated mono- and dicarboxylic acids with diamines comprising at least one primary or secondary amino group for example N- [4- (dimethylamino) butyl] acrylamide, N- [4- (dimethylamino) butyl] methacrylamide, N- [2- (diethylamino) ethyl] acrylamide, N- [4- (dimethylamino) cyclohexyl] acrylamide, N- [4- (dimethylamino) cyclohexyl] methacrylamide; and C2-C8 monoolefins and nonaromatic hydrocarbons comprising at least two conjugated double bonds, for example, ethylene, propylene, isobutylene, isoprene, butadiene.
- the hydrophobic monomers can be chosen from:
- alpha-beta unsaturated C1-C30 alkyl alkyl preferably C4-C22 alkyl, in particular alkyl acrylates and methacrylate, such as acrylates and methyl methacrylate, ethyl, butyl, 2-ethylhexyl isoactyl, lauryl, isodecyl or stearyl (lauryl methacrylate in particular is particularly interesting);
- alpha-beta unsaturated C1-C30 alkyl alkyl preferably C4-C22 alkyl, especially alkyl acrylamide and methacrylamide, such as methyl, ethyl, butyl, 2-ethylhexyl, isoactyl, lauryl isodecyl or stearyl acrylamide and methacrylamide (lauryl methacrylamide in particular is particularly interesting); vinyl or allyl alcohol esters of saturated carboxylic acids such as acetate, propionate, versatate, or vinyl or allyl stearate; alpha-beta unsaturated nitriles containing from 3 to 12 carbon atoms, such as acrylonitrile or
- alpha olefins and conjugated dienes alpha olefins and conjugated dienes
- the surfactants (S) used in the context of the present invention may vary to a large extent, provided that they are soluble, or at least dispersible, in water and preferably in the middle of the step ( E).
- the surfactants (S) used according to the invention are soluble or dispersible in water, in that, once mixed in water with a concentration of 0.5% by mass and at 20 ° C and left for one hour at this temperature:
- the surfactants (S) are generally of amphiphilic molecule having affinity for both aqueous and organic media, which can typically be neutral, anionic, cationic and / or amphoteric surfactants. Preferentially, neutral surfactants are used, typically carrying (i) hydrophobic blocks and (ii) ethoxylated and / or propoxylated blocks.
- the surfactants (S) generally have a low molecular weight, typically between 100 and 10,000 g / mol, typically between 200 and 5000 g / mol.
- the surfactants (S) are deactivatable surfactants, which lose their surfactant character under certain physical and / or chemical conditions (temperature, pH, for example).
- the method of the invention advantageously comprises, following the step (E) of hydration of the polymers, a step (E2) of deactivating all or part of the surfactants (S) where the tensiaoctives are placed in said conditions where they lose their surfactancy.
- the surfactants (S) comprise (for example consist of) labile surfactants, which are degraded under conditions -typically of temperature, pressure and / or pH- where the polymers are not not degraded, and in step (E2), the surfactants are subject to these conditions.
- surfactant of this type it is possible to use ethoxylated and / or propoxylated alkyl ester surfactants, in which the alkyl group contains from 6 to 30 carbon atoms, in particular between 8 and 22, for example alkyl ethoxylated esters. in C10-C20 and, in particular, Alkamuls PSML20 available from Solvay.
- the surfactants (S) comprise (for example consist of) point-type surfactants. trouble. Polymers of this type (described in particular in inonic No surfactants. Organic Chemistry, Ed Nico Mr.
- the step (E2) generally comprises the submission of such surfactants to a temperature above their cloud point (the cloud point depends, in a manner well known per se to the nature of the composition where the polymers are placed, in particular the ionic strength of the medium).
- surfactant with a cloud point of this type it is possible to use surfactants of alkyl type ethoxylated with an alkyl group containing from 6 to 30 carbon atoms, in particular between 8 and 22 and especially C 10 -C 20, as for example Rhodasurf BC630 available from Solvay.
- surfactants (S) can be used which has a surfactant character over a pH range only.
- step (E) is conducted by maintaining the surfactant in said pH range and, in step (E2), the pH is brought out of range.
- surfactants S are those described in See Energy & Science, Jessop et al. (2012), Volume 5, p. 7240, whose surfactant properties are inactivated in the presence of CO2 ("CO2 triggered switchable surfactants”)
- surfactants (S) they are typically employed in a proportion of 0.25 to 20%, typically 0.5 to 10% by weight relative to the weight of the polymer (P).
- step (E) of the process of the invention is obtained according to the following steps, prior to step (E):
- an aqueous composition comprising, in an intimate mixture, the polymers (P) in the hydrated state and the surfactants (S);
- step (E1) the water (and optionally other solvents) contained in the aqueous composition produced in step (E0) is removed.
- the step (E0) can be carried out by carrying out the synthesis of the polymers (P) in the presence of the surfactants (S).
- the step (EO) is carried out by mixing the surfactants (S) with the polymers (P) after the synthesis of the polymers (P), in particular by adding water or an aqueous medium which has been added with surfactants to the polymers or else water or an aqueous medium to a mixture of polymers and surfactants.
- the polymer (P) is generally available in gel form at the end of its synthesis and its intimate mixture with the surfactants (S) can be achieved, inter alia, according to the two modes set out below:
- step (EO) is performed by dissolving the polymer (P) in an aqueous medium containing surfactants, typically a water / water-soluble / surfactant solvent, wherein the solvent water-soluble may for example be acetone.
- surfactants typically a water / water-soluble / surfactant solvent, wherein the solvent water-soluble may for example be acetone.
- the polymer is dissolved in the aqueous medium, which makes it possible to ensure optimum interaction between the hydrophobic groups of the polymer (P) and the surfactants (S).
- step (EO) may be carried out using less solvent (which in particular reduces energy costs of step (E1)), by obtaining the incorporation of tensioctives into the polymer gel without dissolving the polymer in water.
- the surfactants are introduced into the polymer in the form of a gel by subjecting this gel to stirring under mechanical stress, typically in a kneader.
- an intimate physical mixture of the polymers and surfactants is obtained without having to employ a solvent, the water present in the gel generally sufficient to act as a dispersing medium. Therefore, if necessary, the surfactant can be used without being dissolved in a solvent.
- Water or a solvent preferably in reduced amounts, may be added to facilitate the mixing, but such an addition is not generally necessary.
- the solvent removal step (E1) can be carried out in any case known per se.
- step (E1) is typically carried out by drying.
- the step (E1) can in particular be carried out by pulling under vacuum the mixture resulting from the step (E0), which can for example be carried out directly in the mixer used in step (E0).
- the step (E1) may advantageously comprise a grinding after the removal of the solvents.
- composition (C) is most often in the form of a divided solid, especially in the form of a powder, granules or flakes.
- step (E) can be carried out according to any standard procedure for dissolving water-soluble products.
- compositions (C) can be used in the same way as any other water-soluble product used in the petroleum field, which constitutes another advantage of these compositions, since they do not require any particular adaptation for their implementation.
- micellar solution was obtained in a 500 ml HDPE flask.
- 73.8 g of sodium dodecyl sulphate (SDS) were introduced at room temperature (20 ° C.); 216.8g of distilled water; and 9.42g of lauryl methacrylamide (LMAM).
- SDS sodium dodecyl sulphate
- LMAM lauryl methacrylamide
- micellar solution thus prepared was introduced at room temperature (20 ° C.), 530.5 g of water, 592, 1 g of acrylamide (50% by weight aqueous solution), 477.4 g AMPS (51% by weight aqueous solution), 5.56 g of Rhodixan A1 (O-ethyl S- (1-methoxycarbonyl) ethyl xanthate- ethanol solution at 1.0% by weight) and 8.68 g of ammonium persulfate (aqueous solution at 5% by weight).
- the mixture was degassed by bubbling nitrogen for 40 minutes. 17.6 g of sodium formaldehyde sulfoxylate, as a 1% by weight aqueous solution, were added to the medium in one go. The mixture was pre-degassed by bubbling with nitrogen for 15 minutes.
- the polymerization reaction was then allowed to proceed with stirring for 16 hours, whereby the polymer (p) was obtained as a gel.
- the hydration was monitored by means of an AR 2000 rheometer supplied by TA-instruments equipped with a concentric cylinder-type geometry whose mobile is replaced by a helical geometry making it possible to homogenize the solution during the viscosity measurement.
- composition (c) was introduced into 50 g of seawater so as to form a 0.5% solution of active polymer (ie 0.25 g of polymer).
- the hydration of the powder was monitored over time by measuring viscosity at a shear rate of 100s -1 (ie a rotational speed of the helical wheel of 150 rpm).
- the polymer gel (p) was milled under the same conditions as in the example according to the invention, dried on a plate, then sieved at ⁇ . Hydration of 0.25 g of polymer was carried out in 50 g of seawater.
- the polymer gel (p) was ground under the same conditions as in the example according to the invention, dried on a plate, then sieved at ⁇ . Hydration of 0.25 g of polymer was carried out in 50 g of seawater additive of 0.025 g of surfactant. Comparative Example 3 Impregnation of Surfactant on the Polymer Powder The polymer gel (p) was milled under the same conditions as in the example according to the invention, dried on a plate and then sieved at 500 ⁇ m-1.
- the powder obtained was "impregnated" with surfactant with strong stirring in order to ensure a homogeneous distribution of the surfactant on the powder under the following conditions: 7.35 g of dried polymer without surfactant sieved at ⁇ were placed in a blender with stirring with 0.735 g of surfactant The hydration of 0.275 g of powder was carried out in 50 g of seawater.
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1401999A FR3025520A1 (fr) | 2014-09-05 | 2014-09-05 | Hydratation amelioree de polymeres associatifs |
| PCT/EP2015/070396 WO2016034743A1 (fr) | 2014-09-05 | 2015-09-07 | Hydratation améliorée de polymères associatifs |
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| EP15760172.5A Pending EP3189094A1 (fr) | 2014-09-05 | 2015-09-07 | Hydratation améliorée de polymères associatifs |
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| EP (1) | EP3189094A1 (fr) |
| CN (1) | CN106661232B (fr) |
| CA (1) | CA2953048C (fr) |
| FR (1) | FR3025520A1 (fr) |
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| FR3043083B1 (fr) * | 2015-10-30 | 2019-04-19 | Rhodia Operations | Polymeres sequences amphiphiles solubles en milieu fortement salin |
| FR3070043B1 (fr) * | 2017-08-09 | 2019-08-16 | Rhodia Operations | Formulation contenant un polymere associatif |
| CN111566184B (zh) * | 2017-12-19 | 2023-08-01 | 罗地亚经营管理公司 | 用于辅助开采石油的表面活性剂和缔合聚合物的水性配制品 |
| US11332563B2 (en) | 2018-07-30 | 2022-05-17 | Ecolab Usa Inc. | Fast dissolving, water soluble, hydrophobically-modified polyelectrolytes |
| US11220624B2 (en) | 2018-07-30 | 2022-01-11 | Championx Usa Inc. | Salt-tolerant, fast-dissolving, water-soluble rheology modifiers |
| CN109503756B (zh) * | 2018-10-29 | 2021-04-30 | 东营市诺尔化工有限责任公司 | 一种油包水型阴离子聚丙烯酰胺乳液及其方法 |
| WO2020131546A1 (fr) * | 2018-12-19 | 2020-06-25 | Rhodia Operations | Systèmes polymères pour dispersion de particules |
| FR3093514A1 (fr) * | 2019-03-05 | 2020-09-11 | Rhodia Operations | Suspension de polymères associatifs pour le traitement de formations souterraines |
| MX2021010694A (es) * | 2019-03-15 | 2021-10-01 | Rhodia Operations | Composiciones de polimero y uso de las mismas. |
| CN114773539B (zh) * | 2022-05-06 | 2023-03-21 | 中国石油大学(华东) | 一种水基钻井液用抗高温耐高盐微交联疏水缔合增粘降滤失剂及其制备方法 |
| CN119978221A (zh) * | 2023-11-13 | 2025-05-13 | 中国石油天然气股份有限公司 | 聚合物及其制备方法和应用 |
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| US4814096A (en) * | 1981-02-06 | 1989-03-21 | The Dow Chemical Company | Enhanced oil recovery process using a hydrophobic associative composition containing a hydrophilic/hydrophobic polymer |
| US6433056B1 (en) * | 1997-10-17 | 2002-08-13 | Hercules Incorporated | Fluidized polymer suspension of hydrophobically modified poly(acetal- or ketal-polyether) polyurethane and polyacrylate |
| RU2276675C2 (ru) * | 2002-10-09 | 2006-05-20 | Физический факультет Московского государственного университета им. М.В. Ломоносова | Способ селективного ингибирования гелеобразования гидрофобно ассоциирующих веществ |
| CN100354341C (zh) * | 2005-11-08 | 2007-12-12 | 中国海洋石油总公司 | 疏水缔合聚合物的溶解方法 |
| CN102353616B (zh) * | 2011-06-23 | 2013-02-13 | 中国石油天然气股份有限公司 | 驱油用聚丙烯酰胺类聚合物特性粘数测定方法 |
| MX354132B (es) * | 2011-10-24 | 2018-02-14 | Rhodia Operations | Preparacion de los polimeros en bloques anfifilicos por medio de la polimerizacion micelar por radicales controlada. |
| PH12014500893A1 (en) * | 2011-11-11 | 2014-02-06 | Basf Se | Thickener containing at least one cationic polymer which can be obtained by inverse emulsion poylmerisation. |
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2014
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- 2015-09-07 CA CA2953048A patent/CA2953048C/fr active Active
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- 2015-09-07 WO PCT/EP2015/070396 patent/WO2016034743A1/fr not_active Ceased
- 2015-09-07 CN CN201580047471.0A patent/CN106661232B/zh active Active
- 2015-09-07 US US15/507,903 patent/US10457862B2/en active Active
- 2015-09-07 RU RU2017111043A patent/RU2735523C2/ru active
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| See also references of WO2016034743A1 * |
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| Publication number | Publication date |
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| CN106661232B (zh) | 2021-02-23 |
| RU2017111043A (ru) | 2018-10-05 |
| CN106661232A (zh) | 2017-05-10 |
| FR3025520A1 (fr) | 2016-03-11 |
| WO2016034743A1 (fr) | 2016-03-10 |
| CA2953048A1 (fr) | 2016-03-10 |
| RU2017111043A3 (fr) | 2019-03-12 |
| US10457862B2 (en) | 2019-10-29 |
| CA2953048C (fr) | 2022-10-18 |
| RU2735523C2 (ru) | 2020-11-03 |
| US20170298269A1 (en) | 2017-10-19 |
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