EP3535337A1 - Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmitteln - Google Patents
Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmittelnInfo
- Publication number
- EP3535337A1 EP3535337A1 EP16793799.4A EP16793799A EP3535337A1 EP 3535337 A1 EP3535337 A1 EP 3535337A1 EP 16793799 A EP16793799 A EP 16793799A EP 3535337 A1 EP3535337 A1 EP 3535337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radicals
- reactive resin
- mol
- resin composition
- radical
- 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.)
- Withdrawn
Links
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- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 2
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- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
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- IQYMRQZTDOLQHC-ZQTLJVIJSA-N [(1R,4S)-2-bicyclo[2.2.1]heptanyl] prop-2-enoate Chemical compound C1C[C@H]2C(OC(=O)C=C)C[C@@H]1C2 IQYMRQZTDOLQHC-ZQTLJVIJSA-N 0.000 description 2
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- 239000012745 toughening agent Substances 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- C09K8/805—Coated proppants
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
Definitions
- the present invention relates to modified
- Reactive resin compositions and their use as
- the fracking process is used in the extraction of oil and gas and is a method for the generation, widening and stabilization of cracks in the rock of a deposit in the deep underground, with the aim of increasing the permeability of
- uncoated proppants are brittle and do not have the necessary compressive strength to deliver at great depths.
- the breakage of the proppant under the high pressure releases fines which clog the cracks and reduce the oil or gas flow rate.
- Supporting agents have improved resistance compared to the uncoated proppants.
- the effect of the coating e.g. with organic resins, but is limited by the fact that the available coatings themselves are very brittle and also tend to break or flake.
- WO2008088449 A2 discloses a possibility for reducing the brittleness of coatings of such particles, wherein thermosetting reactive resins such as epoxy resins with block copolymers and coupling agents are added so as to achieve an improvement in the impact resistance of the coating.
- thermosetting reactive resins such as epoxy resins with block copolymers and coupling agents are added so as to achieve an improvement in the impact resistance of the coating.
- the toughener is also an expensive and expensive to produce block polymers.
- a disadvantage is the complicated process.
- various resins such as phenolic resins are used, which contain, for example, as reinforcing fillers pyrogenic silicic acids.
- US5422183A discloses particles for use as support materials in fracking processes, which are also a two-layer
- US20140124200A discloses the use of hybrid materials made by chemically combining organic resins and silicone resins to coat supporting materials.
- the disadvantage here is an additional, complicated process for chemical modification and difficult to control product quality in the reaction of two branched polymers.
- US2012088699A discloses a coated particle having at least two oleophilic and hydrophobic resins in proportion 1: 0.1-10, whereby, among other things, silicone resins can be used.
- the disadvantage is the use of silicone resins in very high amounts of at least 10 wt .-%, which is economical
- Epoxy resin at least one organopolysiloxane homogeneously distributed by means of a silicone organocopolymer which as
- Dispersant serves.
- the object of the present invention was therefore to provide cost-effective coating compositions for proppants, a process for coating proppant and the
- coated proppant These proppants after coating and curing should have the necessary hardness and at the same time show elastic properties such as good impact resistance, so that there is no breakage or spalling of the coating.
- the reactive resin compositions according to the invention contain
- R 17 is the same or different from each other different monovalent, substituted or unsubstituted
- organic radicals which carry or do not carry functional groups an -OH or a hydrogen radical
- Reactive resin composition only one reactive resin (A).
- the reactive resins (A) must have a solid non-sticky
- the coating can be essentially
- Coating can also be only partially cured or provided with other reactive groups, so that a
- reaction resins (A) all polymeric or oligomeric organic compounds are suitable, with a for a curing reaction of sufficient number of suitable reactive groups are provided.
- reaction resins all known in the art reaction resins are suitable, which can be processed into thermosets, regardless of the respective
- Reaction resin proceeds. Basically, they can be divided into three groups according to the type of
- Reaction resins (A) are preferably one or more
- Epoxy resins, urethane resins and / or air-drying alkyd resins are selected as the starting material. Epoxy and urethane resins are usually made by adding stoichiometric amounts of a
- Crosslinking agent containing hydroxyl, amino, carboxyl or carboxylic anhydride groups, wherein the curing reaction takes place by addition of the oxirane or isocyanate groups of the resin to the corresponding groups of the curing agent.
- the so-called catalytic curing by polyaddition of the oxirane groups themselves is also possible.
- Air-drying alkyd resins crosslink by autoxidation with atmospheric oxygen. Also
- addition-curing silicone resins are known, preferably those with the proviso that no further free silanes are included.
- Examples of the second group of the polycondensation-crosslinked reaction resins (A) are preferable.
- aromatic compounds such as phenol, resorcinol, cresol, etc., furan resins, saturated polyester resins, and
- condensation-curing silicone resins are usually carried out by increasing the temperature with elimination of water, low molecular weight alcohols or other low molecular weight compounds.
- From the third group of crosslinked by polymerization reaction resins are one or more homo- or copolymers of acrylic acid and / or methacrylic acid or its esters, further unsaturated polyester resins, vinyl ester resins and / or
- Maleimide resins are preferred as starting resins for the invention modified reactive resins. These resins have polymerizable double bonds through which
- the three-dimensional crosslinking is effected.
- initiators compounds capable of forming free radicals, e.g. peroxides,
- reaction resins (A) but also all others which are suitable for the production of thermosetting plastics, can be modified in the manner proposed according to the invention and can be obtained according to
- thermosets with significantly improved resistance to breakage and impact, with other essential properties characteristic of the thermosets, such as strength, heat resistance and chemical resistance, in the
- the preferred reactive resins (A) are the phenol-formaldehyde
- Resins. These reactive resins (A) include thermosetting ones
- Resole type phenolic resins and phenolic novolac resins which can be rendered heat reactive by the addition of catalyst and formaldehyde.
- the reactive resins (A) can either be completely cured during the coating of the proppant particles be cured or only partially cured. Supporting agents with only partially hardened coating harden only after the
- Particularly preferred reactive resins (A) are phenol novolak resins. These are available for example from Plastics
- Hexamethylenetetramine is the preferred material as (C) for this function because it serves as both catalyst and formaldehyde source.
- (A) is used in amounts of 80-99.5 wt .-%. Preferably in amounts of 88-99% by weight and more preferably of 94-98% by weight.
- the reactive resin compositions according to the invention comprise at least one silicone resin (B) in amounts of from 0.5 to 8% by weight, preferably in amounts of from 0.5 to 7% by weight, more preferably in amounts of from 1 to 6% by weight.
- the silicone resins (B) may be solid or liquid at room temperature.
- the silicone resins (B) are preferably those containing a
- the silicone resins (B) contain at least 20 mol%, preferably at least 25 mol%, particularly preferably at least 30 mol%, in particular at least 35 mol% of repeating units of the formula (Ia) or (Ib) or a mixture of the formulas (Ia) and (Ib ), wherein recurring units of the formula (Ib) are contained in an amount of at most 50 mol%, preferably at most 40 mol%, particularly preferably at most 20 mol%. In a particularly preferred embodiment, no units (Ib) are contained in the silicone resins (B).
- Repeating units of formula (Id) may be present in an amount of up to 80 mol%, preferably up to 70 mol%, especially
- silicone resins (B) preferably up to 60 mol%, in particular up to 50 mol%, in the silicone resins (B).
- Embodiment are not units (Id) in the
- the silicone resins (B) contain alkoxy groups as R 17
- At least 5% by weight preferably at least 8.5% by weight, and particularly preferably at least 12% by weight.
- All other R 17 can independently be monovalent hydrocarbon radicals substituted or
- Hydrocarbon radicals preferably with 1 to 16
- Hydrocarbon radicals R 17 are alkyl radicals, such as
- Aralkyl radicals such as the benzyl radical and the ß-phenylethyl radical.
- Preferred hydrocarbon radicals as radicals R 17 are methyl, n-propyl, iso-propyl, phenyl, n-octyl, or iso-octyl radicals, the methyl, the n-propyl, the phenyl and the iso-octyl Residue is particularly preferred, and the methyl and the phenyl radical is particularly preferred.
- Silicone resin (B) in a preferred embodiment at least 10 mol% of all radicals R 17 are independently identical or different monovalent, substituted or unsubstituted organic radicals having at least 3 C-atoms. Preferably at least 15 mol%, particularly preferably at least 20 mol%, particularly preferably at least 25 mol%.
- Hydrocarbon radicals preferably have 3 to 18 C atoms.
- organic substituted radicals having at least 3 C atoms are also polyether radicals of the general formula (XIX)
- R 9 denotes a hydrocarbon radical having 1 to 6 carbon atoms or H, preferably Me or H,
- u is 0 or an integer from 1 to 16, preferably 1 to 4
- v is 0 or an integer from 1 to 35, preferably 1 to 25,
- w is 0 or an integer from 1 to 35, preferably 1 to 25,
- x is 0 or an integer from 1 to 35, preferably 1 to 25
- the silicone resins (B) of the radicals R 17 independently carry at least 1 mol%, preferably at least 2 mol%, more preferably at least 3 mol%, in particular at least 4 mol%, most especially at least 6 mol% of independently functional groups or silicon-bonded hydrogen, only in combination with the aforementioned alkoxy groups.
- Silicone resins (B) independently of the radicals R 17 still carry at least 1 mol%, preferably at least 2 mol%,
- Hydrogen in combination with the aforementioned alkoxy groups and simultaneously with the monovalent, substituted or unsubstituted organic radicals having at least 3 C-atoms.
- radicals R 17 having functional groups are glycol radicals and hydrocarbon radicals having functional organic groups selected from the group of
- Phosphoric acid esters Phosphoric acid esters, phosphonic acid esters, epoxide functions, amino functions, methacrylate functions, carboxyl functions, acrylate functions, olefinically or acetylenically unsaturated hydrocarbons.
- the respective functional groups may optionally be substituted.
- radicals R 17 may optionally hydroxy, alkyloxy or
- non-adjacent carbon atoms may be replaced by oxygen atoms.
- R 17 The functional groups in R 17 are usually not directly attached to the silicon atom.
- An exception to this are the olefinic or acetylenic groups, which may also be present directly bonded to silicon, especially the
- R 17 Vinyl group.
- the remaining functional groups in R 17 are attached to the silicon atom via spacer groups, the spacer always being Si-C bonded.
- the spacer is one
- divalent hydrocarbon radical 1 to 30
- Carbon atoms may be replaced by oxygen atoms and may also contain other heteroatoms or heteroatom groups, which is not preferred.
- the preferred functional groups methacrylate, acrylate and epoxy are preferably bonded to the silicon atom via a spacer, the spacer being composed of 3 to 15 carbon atoms, preferably 3 to 8 carbon atoms, in particular 3
- the likewise preferred carboxyl group is preferably bonded to the silicon atom via a spacer, the spacer being composed of 3 to 30 carbon atoms, preferably 3 to 20 carbon atoms
- R 17 radicals which carry carboxyl radicals as the functional group are described by the general formula (VIII) Y 1 - COOH (VIII), where Y 1 is preferably a divalent linear or
- branched hydrocarbon radical means with up to 30
- the rest Y 2 generally means one
- Y 2 can also contain other heteroatoms and
- Y 2 are hydrocarbon radicals, such as, for example, alkyl radicals, such as the methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, tert. Butyl, n-pentyl, iso-pentyl, neo-pentyl, tert.
- -Pentyl radical hexyl radicals such as the n-hexyl radical, heptyl radicals such as the n-heptyl radical, octyl radicals such as the n-octyl radical and iso-octyl radicals such as the 2, 2, 4-trimethylpentyl radical, nonyl radicals such as the n-nonyl radical, decyl radicals such as the n-decyl radical, dodecyl radicals, such as the n-dodecyl radical, and octadecyl radicals, such as the n-octadecyl radical, cycloalkyl radicals, such as cyclopentyl, cyclohexyl, cycloheptyl and methylcyclohexyl radicals, aryl radicals, such as phenyl, naphthyl, anthryl and phenanthryl, alkaryl,
- Aralkyl radicals such as the benzyl radical and the ß-phenylethyl radical.
- Particularly preferred hydrocarbon radicals Y 2 are the methyl, the n-propyl, iso-propyl, the phenyl, the n-octyl and the iso-octyl radical.
- Carboxylic anhydride radicals of the general formulas (X) or (XI) be
- radicals R 17 carrying functional groups are phosphonic acid radicals and phosphonic ester radicals of the general formula (XII) Y 1 -P 2 O) (OR 1S ) 2 (XII), where Y 1 has the abovementioned meaning, and the radicals R le are preferably independently from each other hydrogen or
- Hydrocarbon radicals mean with up to 18
- Preferred phosphonic acid radicals are those in which R 16 is hydrogen, methyl or ethyl, although this list is not intended to be limiting.
- radicals R 17 which carry further functional groups are acryloxy or methacryloxy radicals of the methacrylic acid esters or acrylic acid esters, such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate,
- radicals R 17 carrying functional groups are the preferred olefinically unsaturated radicals
- Y 1 has the abovementioned meaning or in a further embodiment in the formulas (XIII) and (XIV) is not present, and the radicals R 7 , R 8 , R 9 and R 10 is independent each other is a hydrogen atom or a C 1 -C 8 hydrocarbon radical which may optionally contain heteroatoms, the hydrogen atom being the most preferred radical.
- Particularly preferred radicals (XIII) are the vinyl radical, the propenyl radical and the butenyl radical, in particular the vinyl radical.
- the radical (XIII) can also be a dienyl radical bound via a spacer, such as the 1,3-butadienyl or the isoprenyl radical bonded via a spacer.
- Further examples of radicals R 17 carrying functional groups are those having epoxy groups of the formulas (XV) and (XVI),
- R 12 is a divalent hydrocarbon radical having 1 to 10
- Ether oxygen atom may be interrupted
- R 13 is a hydrogen atom or a monovalent one
- Hydrocarbon radical having 1 to 10 carbon atoms per radical which may be interrupted by an ether oxygen atom,
- R 11 is a trivalent hydrocarbon radical having 3 to 12
- z is 0 or 1.
- Preferred epoxy radicals R 17 are the 3-glycidoxypropyl radical and the 3,4-epoxycyclohexylethyl radical.
- radicals R 17 carrying functional groups are those having amino groups of the general formula (XVIII)
- R 20 [NR 21 -R 22 -] n NR 21 2 (XVIII), wherein R 20 is a divalent linear or branched
- Hydrocarbon radical having 3 to 18 carbon atoms preferably an alkylene radical having 3 to 10 carbon atoms, means
- R 21 is a hydrogen atom, an alkyl radical having 1 to 8
- R 22 is a divalent hydrocarbon radical having 1 to 6
- Carbon atoms preferably an alkylene radical having 1 to 6 carbon atoms,
- n 0, 1, 2, 3 or 4, preferably 0 or 1.
- Particularly preferred functional groups carrying radicals R 17 are carboxylic acid functional, amino-functional and
- epoxy functional radicals In particular, amino-functional and epoxy-functional radicals.
- the silicone resins (B) can carry different functional groups. However, this is only possible if the chosen groups are not among each other Conditions of regular storage react, ie one
- Unit of the formula (VII) present these may independently of each other for different radicals within the specified group of possible radicals, wherein the aforementioned conditions for the functional groups must be observed.
- Another object of the present invention is the
- Solvents are known to the person skilled in the art and are described in
- suitable solvents are, for example, ethyl acetate and acetone. Which solvents are suitable for which reactive resins is described, for example, in the following textbook: Polymer Handbook. Volume 2, 4 Ed .; J. Brandrup, EH Immergut, EA Grulke; John Wiley & Sons, Inc., 1999 (ISBN 0-471-48172-6).
- Suitable mixers are, for example, laboratory stirrers, planetary mixers or dissolvers, or rotor-stator systems, or else extruders, rolls, 3-roll stools, etc.
- B) can dissolve completely or partially in (A) during dispersion. Undissolved components are present as the second phase in (A) dispersed. The mean size of these domains is
- Another object of the present invention is the
- Reactive resin composition used for coating proppants.
- Another object of the present invention is the
- Reactive resin compositions are used.
- the reactive resin composition according to the invention in a flowable form - that is flowable already at 20 ° C or by heating to 250 ° C.
- the reactive resin composition according to the invention is melted by heating to 250 ° C and therefore flowable together with or without at least one curing agent (C) and with or without at least one additive (D), applied to the proppant
- (B) is mixed and cured together with molten (A) and the proppant and optionally addition of hardener (C) and optionally other additives (D).
- the order of addition of the components (A), (B), (C) and (D) is variable.
- coated according to the invention support (A) with a suitable solvent, proppant and (B).
- Mixture can optionally hardener (C) and possibly different
- Additives (D) are added. Subsequently, the
- the order of addition of components (A), (B), (C) and (D) is variable.
- a suitable proppant such as sand is preheated to about 170-260 ° C. In a mixer is then the
- Reactive resin composition according to the invention a suitable hardener (C) and optionally various additives (D) are added.
- a suitable proppant such as sand is preheated to about 170-260 ° C.
- A a suitable hardener (C) and optionally various additives (D) are added.
- this layer is first partially or completely cured.
- Reactive resin composition in portions in several steps without substantial intermediate curing of the individual portions and only at the end of a partial or complete curing. This therefore only leads to a single layer.
- Suitable proppants have long been known to the person skilled in the art and can be used for the coating according to the invention.
- Supporting agents are usually hard, high-strength particles such as sand or gravel from rocks such as limestone, marble, dolomite, granite, etc., but also glass beads, ceramic particles, ceramic balls and
- the proppant particles have a substantially spherical or spherical shape, since they leave enough space for the crude oil or gas
- sand can flow past. Therefore, coarse-grained sand, glass beads and glass bubbles (so-called microballoons) as a proppant prefers. Sand is particularly preferably used as a proppant.
- the proppant particles have an average size of 5,000 to 50 ⁇ , more preferably an average size of 1,500 to 100 ⁇ .
- they preferably show an aspect ratio of length to width of
- Suitable hardeners have long been known to the person skilled in the art and are selected according to the reactive resin used.
- Novolac is urotropin.
- (C) and thus also urotropin is typically used in amounts of between 8 and 20% by weight, based on the amount of reactive resin composition according to the invention.
- urotopin is applied as an aqueous solution to the melt of the reactive resin.
- Such methods are also known to those skilled in the art and described for example in US4732920.
- Suitable additives (D) have also long been known to the person skilled in the art.
- Non-exhaustive examples are anti-static agents, release agents, adhesion promoters, etc.
- Suitable proppants, hardeners (C) and additives (D) are described for example in US4732920 and US2007 / 0036977 AI. For optimum performance of the invention coated
- a change in the proppant may require an adjustment of the coating process and / or the hardener used (C) and additives (D).
- the surface of the proppant may be completely or partially coated. Preferably appear in the investigation with the
- Reactive resin composition coated more preferably at least 50%.
- the essential part of the coating on the support means according to the invention is 0.1 to 100 micrometers thick, preferably 0.1 to 30 ⁇ ⁇ , particularly preferably 1 to 20 ⁇ . Preference is given to the proppants of the invention having less than three layers of the invention
- Reactive resin composition coated Particularly preferred with only one layer.
- the reactive resin composition according to the invention is preferably used in amounts of 0.1-20% by weight, based on the weight of the
- Supporting agent used Preferably from 0.5-10% by weight and more preferably from 1-5% by weight.
- Another object of the present invention is the
- the reactive resin composition according to the invention has
- the reactive resin compositions according to the invention show advantages in coating of proppants, in that the scrap is considerably reduced by bonding the proppant.
- the reactive resin composition of the present invention has improved as a hardened coating for proppant
- the coating has a reduced tendency to break and flake and more effectively and permanently protects the proppant from high pressures and impacts. Thus, the durability of the whole improves
- Supporting agent more resistant to stress, such as Impact, deformation or pressure and thus have a lower tendency to break.
- Another advantage of the coating according to the invention lies in its deformability, so that it often does not break even when breaking the brittle proppant grains themselves and thus encloses the resulting fines such as a plastic shell or holds together and thus their total release is reduced.
- the oil or gas flow can be maintained longer. This results in decisive economic and environmental benefits.
- Epoxy equivalent weight 660-680 g / mol; Epoxide number 1.85 mmol / g) were added and stirred at 420 rpm for 10 minutes.
- the liquid mass is poured hot onto a PTFE film and mechanically comminuted, thus producing a granulate.
- silicone resin 2 of the composition [PhSi0 3/2] 7 were 30 [(2-amino-ethyl) -3 - aminopropyl-Si0 3/2] 2, 62 [Me 2 Si0 2/2 ] 3 , 8e [MeOi / 2 ] 5 , 88 [BuO 1 2 ] 0 , 57
- SEC eluent THF
- Viscosity (dynamic, 25 ° C) 25 mPa.s) instead of silicone resin 1 incorporated and produced a granulate.
- Comparative Example VI is not finely dispersible and forms uneven chunks and splinters in the phenolic resin
- the samples were placed in a cold oven, heated to 160 ° C with rinsing with nitrogen within 3 hours, kept at this temperature for 2 h and cooled to 23 ° C overnight.
- Coating be considered in isolated form. One receives a statement to the elasticity, impact resistance and
- Comparative Examples A 50 ⁇ thick, hardened layer of the unmodified resin Resin 14772 (Plastics Engineering Company, Sheboygan, USA) and the non-inventive resin of Comparative Example V2.
- the coated sheets were tested on an Erichsen ball impact tester, Model 304-ASTM and the results visually evaluated by a trained examiner: For this purpose, a ball is dropped on the back of the sheet from a defined, variable drop height (in each case double tests at different positions). The impact energy is calculated from the height of fall multiplied by
- Impact energy is changed as follows: 5, 10, 15, 20, 25, 30, 35, 40 (in x lbs).
- the dentate impact sites are visually inspected for cracks and cracks and rated relative to the reference.
- Table 1 shows the evaluation of the resin coating on Q-PA EL test panels and their resistance by means of
- Example 3 of the invention has a substantially improved
- Example 8 was tested according to DIN EN ISO 13503-2 at 14000 PSI and 18000 PSI pressure. The result is shown in Table 2. Table 2
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Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2016/076383 WO2018082765A1 (de) | 2016-11-02 | 2016-11-02 | Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmitteln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3535337A1 true EP3535337A1 (de) | 2019-09-11 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16793799.4A Withdrawn EP3535337A1 (de) | 2016-11-02 | 2016-11-02 | Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmitteln |
| EP17737512.8A Active EP3535338B1 (de) | 2016-11-02 | 2017-06-29 | Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmitteln |
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| Application Number | Title | Priority Date | Filing Date |
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| EP17737512.8A Active EP3535338B1 (de) | 2016-11-02 | 2017-06-29 | Modifizierte reaktivharzzusammensetzungen und deren verwendung zur beschichtung von stützmitteln |
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| Country | Link |
|---|---|
| US (2) | US20190256767A1 (de) |
| EP (2) | EP3535337A1 (de) |
| JP (2) | JP2020513428A (de) |
| KR (2) | KR20190057128A (de) |
| CN (2) | CN109890919A (de) |
| WO (2) | WO2018082765A1 (de) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732920A (en) | 1981-08-20 | 1988-03-22 | Graham John W | High strength particulates |
| JP3363484B2 (ja) * | 1992-03-13 | 2003-01-08 | 東レ・ダウコーニング・シリコーン株式会社 | 硬化性樹脂組成物 |
| JP3339910B2 (ja) * | 1993-04-15 | 2002-10-28 | 東レ・ダウコーニング・シリコーン株式会社 | 硬化性樹脂組成物 |
| US5952439A (en) * | 1993-04-15 | 1999-09-14 | Dow Corning Toray Silicone Co., Ltd. | Epoxy group-containing silicone resin and compositions based thereon |
| US5422183A (en) | 1993-06-01 | 1995-06-06 | Santrol, Inc. | Composite and reinforced coatings on proppants and particles |
| JP3466239B2 (ja) * | 1993-08-18 | 2003-11-10 | 東レ・ダウコーニング・シリコーン株式会社 | 硬化性樹脂組成物 |
| US7135231B1 (en) | 2003-07-01 | 2006-11-14 | Fairmont Minerals, Ltd. | Process for incremental coating of proppants for hydraulic fracturing and proppants produced therefrom |
| BRPI0719413A2 (pt) | 2006-12-19 | 2014-03-18 | Dow Global Technologies Inc | "propante revestido" |
| CN101586024A (zh) | 2008-05-21 | 2009-11-25 | 北京仁创科技集团有限公司 | 采油用覆膜颗粒、压裂支撑剂及采油方法 |
| DE102008044199A1 (de) | 2008-11-28 | 2010-06-02 | Wacker Chemie Ag | Siloxan-Mischungen enthaltende Epoxidharze und Verfahren zu ihrer Herstellung und deren Verwendung |
| DE102008044396A1 (de) * | 2008-12-05 | 2010-06-10 | Wacker Chemie Ag | Hochhydrophobe Beschichtungen |
| US8993489B2 (en) * | 2011-05-03 | 2015-03-31 | Preferred Technology, Llc | Coated and cured proppants |
| US9725645B2 (en) * | 2011-05-03 | 2017-08-08 | Preferred Technology, Llc | Proppant with composite coating |
| JP2013023661A (ja) * | 2011-07-25 | 2013-02-04 | Nitto Denko Corp | 半導体封止用エポキシ樹脂組成物およびそれを用いた半導体装置 |
| CN102942334B (zh) * | 2012-10-24 | 2016-02-17 | 亿利沙材料科技有限责任公司 | 一种覆膜改性支撑剂及其制备方法和应用 |
| US9803131B2 (en) * | 2012-11-02 | 2017-10-31 | Wacker Chemical Corporation | Oil and gas well proppants of silicone-resin-modified phenolic resins |
| US20150322335A1 (en) * | 2014-05-11 | 2015-11-12 | Clarence Resins & Chemicals, Inc. | Silicone-phenolic compositions, coatings and proppants made thereof, methods of making and using said compositions, coatings and proppants, methods of fracturing |
| CN105985767A (zh) * | 2015-02-04 | 2016-10-05 | 北京仁创科技集团有限公司 | 支撑剂及其制备方法 |
-
2016
- 2016-11-02 CN CN201680090568.4A patent/CN109890919A/zh not_active Withdrawn
- 2016-11-02 US US16/346,977 patent/US20190256767A1/en not_active Abandoned
- 2016-11-02 EP EP16793799.4A patent/EP3535337A1/de not_active Withdrawn
- 2016-11-02 KR KR1020197012628A patent/KR20190057128A/ko not_active Withdrawn
- 2016-11-02 JP JP2019523036A patent/JP2020513428A/ja active Pending
- 2016-11-02 WO PCT/EP2016/076383 patent/WO2018082765A1/de not_active Ceased
-
2017
- 2017-06-29 EP EP17737512.8A patent/EP3535338B1/de active Active
- 2017-06-29 CN CN201780068178.1A patent/CN109906255B/zh active Active
- 2017-06-29 WO PCT/EP2017/066220 patent/WO2018082818A1/de not_active Ceased
- 2017-06-29 US US16/346,991 patent/US10844279B2/en active Active
- 2017-06-29 KR KR1020197012621A patent/KR102208913B1/ko active Active
- 2017-06-29 JP JP2019523087A patent/JP6794543B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR20190057127A (ko) | 2019-05-27 |
| EP3535338B1 (de) | 2020-02-12 |
| JP2020513428A (ja) | 2020-05-14 |
| JP2020502296A (ja) | 2020-01-23 |
| WO2018082818A1 (de) | 2018-05-11 |
| WO2018082765A1 (de) | 2018-05-11 |
| KR102208913B1 (ko) | 2021-01-28 |
| US20200063024A1 (en) | 2020-02-27 |
| CN109890919A (zh) | 2019-06-14 |
| CN109906255A (zh) | 2019-06-18 |
| US20190256767A1 (en) | 2019-08-22 |
| JP6794543B2 (ja) | 2020-12-02 |
| EP3535338A1 (de) | 2019-09-11 |
| KR20190057128A (ko) | 2019-05-27 |
| US10844279B2 (en) | 2020-11-24 |
| CN109906255B (zh) | 2021-04-16 |
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