WO2018210902A1 - Composition comprenant des particules mésoporeuses de dioxyde de silicium - Google Patents

Composition comprenant des particules mésoporeuses de dioxyde de silicium Download PDF

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Publication number
WO2018210902A1
WO2018210902A1 PCT/EP2018/062655 EP2018062655W WO2018210902A1 WO 2018210902 A1 WO2018210902 A1 WO 2018210902A1 EP 2018062655 W EP2018062655 W EP 2018062655W WO 2018210902 A1 WO2018210902 A1 WO 2018210902A1
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additive
silicon dioxide
dioxide particles
mesoporous silicon
composition according
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PCT/EP2018/062655
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English (en)
Inventor
Radoslaw Kierat
Piotr Antoni Bazula
Maik SCHLESINGER
Peter LEIDINGER
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Basf Se
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1022—Non-macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1029—Macromolecular compounds
    • C04B20/1048—Polysaccharides, e.g. cellulose, or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials
    • C04B20/1066—Oxides, Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials
    • C04B20/107—Acids or salts thereof
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
    • 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
    • C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/504—Compositions based on water or polar solvents
    • C09K8/506—Compositions based on water or polar solvents containing organic compounds
    • C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • 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
    • C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
    • 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
    • C09K8/62—Compositions for forming crevices or fractures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/10—Accelerators; Activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/20—Retarders
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/32—Anticorrosion additives

Definitions

  • a composition comprising mesoporous silicon dioxide particles
  • the present invention is directed to a composition comprising mesoporous silicon dioxide particles and at least one additive for oil field applications incorporated therein.
  • the present invention is further directed to a method for preparing said composition by contacting mesoporous silicon dioxide particles with the at least one additive and the use of mesoporous silicon dioxide particles as a carrier for additives.
  • a time-delayed release of additives is often of high interest.
  • a time-delayed release is advantageous during the introduction of additives into oil wells or oil production systems since it is desired that the effect of the additives does not occur during transportation.
  • the additive should be released effectively at the location inside the well or oil production system where its effect is required.
  • hydraulic fracturing for instance, an aqueous solution is pressed under high pressure into a rock for the mechanical loosening of rock formations.
  • proppants For the extraction of oil and natural gas from reservoir terranes with extraordinary bad permeability, this process is usually accompanied by the formation of cracks in the rock which are prevented from closing by addition of sand or other particulate materials known as "proppants".
  • a good transport of the proppants is crucial and can be achieved by thickening agents.
  • the thickening effect has to be repealed after transport by the addition of a breaker which enables a continuous and effective runoff of the liquid. Therefore, a time-delayed breakdown of viscosity enables a better placement of the proppants and an enhanced effect of hydraulic fracturing. With the application of non-time-delayed breakers, the transport of the proppants into the drilling well is not feasible.
  • One approach for the time-delayed release of proppants is the use of acrylate encapsulated peroxides which, however, show an explosive reaction profile.
  • time-delayed release of additives is also advantageous in the field of well cementing wherein cement is introduced into the well in order to support the casing.
  • it is often required to accelerate or delay the setting time of the cement which is achieved by the application of additives. Since the effect of the additives on the setting time should occur after the cement has been introduced into the well and not during transportation, a time-delayed release of the additives is of high interest.
  • a time-delayed release of scale inhibitors and other additives could be useful as well.
  • nanosilica particles per se are also applicable in the field of well cementing as promoters of the pozzolanic reaction.
  • the microstructure of the cement paste is also improved by the presence of the nanosilica particles.
  • US 6,209,646 B1 is related to a method of controlling the release of chemical additives in well treating fluids by incorporating said additives into precipitated silica.
  • US 2012/0015852 A1 describes the encapsulation of drilling fluid additives into nanoparticles, preferably latex nanoparticles. Said encapsulated additives are released by a specific triggering mechanism.
  • US 6,209,646 B1 and US 2012/0015852 A1 do not describe the application of mesoporous silica particles as carriers for the time-delayed release of additives.
  • mesoporous silica particles applicable for a time-delayed release of additives in the field of oil production.
  • a composition comprising mesoporous silicon dioxide particles and at least one additive for oil field applications incorporated in said mesoporous silicon dioxide particles is provided.
  • the composition comprises the mesoporous silicon dioxide particles and the at least one additive for oil field applications in a weight ratio of 45 : 55 to 99.5 : 0.5.
  • the mesoporous silicon dioxide particles have an average particle size in the range from 0.1 to 100 ⁇ , preferably from 10 to 70 pm.
  • the mesoporous silicon dioxide particles have a pore size in the range from 1 to 25 nm, preferably from 2 to 10 nm. According to still another embodiment of the present invention, the mesoporous silicon dioxide particles have a surface area in the range from 500 to 1350 m 2 /g, preferably from 700 to
  • mesoporous silicon dioxide particles are of the BA- ' lb type.
  • the additive is a rheology modifier, a well cementing additive, an oilfield production scale additive or a mixture of two or more thereof.
  • the additive is selected from a breaker and/or a crosslinker, an accelerator, retarder or expansion additive for cement, a scale inhibitor, a corrosion inhibitor, a shut-off control additive, a shale inhibitor and mixtures of two or more thereof.
  • the additive is selected from organic and inorganic peroxides, organic and inorganic acids, enzymes, amines, borates, zirconium compounds, titanium compounds, aluminum compounds, terpenes, CaCI 2 , Ca(N0 3 ) 2 , NaN0 3 , lignosulphonates, hydroxycarboxylic acids, saccharide compounds, cellulose derivatives, organophosphates, sodium chloride, zinc oxide, lead oxide, CaO, MgO, scale inhibitors, corrosion inhibitors, shut-off control additives, shale inhibitors, and mixtures of two or more thereof.
  • the additive is selected from methane sulfonic acid, p-toluene sulfonic acid, benzoyl peroxide, sodium peroxide, K 2 S 2 0 8 , triethanolamine, borax,
  • the additive is a rheology modifier, preferably a rheology modifier for hydraulic fracturing applications.
  • the rheology modifier is a breaker and/or a crosslinker.
  • the breaker is selected from organic and inorganic peroxides, organic and inorganic acids, enzymes, and mixtures of two or more thereof, and/or
  • the crosslinker is selected from amines, borates, zirconium compounds, titanium
  • the breaker is selected from methane sulfonic acid, p-toluene sulfonic acid, benzoyl
  • the crosslinker is selected from triethanolamine, borax, zirconiumchloride dioxide, and
  • the additive is a well cementing additive, preferably an accelerator, retarder or expansion additive for cement.
  • the accelerator is selected from CaCI 2 , Ca(N0 3 ) 2 , NaN0 3 , and mixtures of two or more thereof,
  • the retarder is selected from lignosulphonates, hydroxycarboxylic acids, saccharide
  • the expansion additive is selected from CaO, MgO, and mixtures thereof.
  • the additive is an oilfield production scale additive selected from scale inhibitors, corrosion inhibitors, shut-off control additives, shale inhibitors, and mixtures of two or more thereof.
  • the additive is not an enzyme.
  • the present invention is also directed to a method for preparing the composition as defined above, comprising the steps of
  • mesoporous silicon dioxide particles by calcinating a composition comprising a poly(ethylene oxide)-poly(alkylene oxide)-poly(ethylene oxide) triblock copolymer and an inorganic compound selected from tetraalkylsilicates and/or alkali silicates, and ii) contacting the mesoporous silicon dioxide particles obtained in step i) with an additive as defined above.
  • Said tetraalkylsilicates may preferably be tetraalkylorthosilicates.
  • tetraalkylorthosilicates may preferably be tetramethylorthosilicates or tetraethylorthosilicates. More preferably, said tetraalkylorthosilicates are tetraethylorthosilicates. Accordingly, said tetraalkylsilicates are selected from tetramethylorthosilicate,
  • tetraethylorthosilicate or mixtures thereof. It is especially preferred that said tetraalkylsilicate is tetraethylorthosilicate.
  • Said alkali silicates may be lithium silicates, sodium silicates and/or potassium silicates. More preferably, said alkali silicates may be sodium silicates and/or potassium silicates. It is especially preferred that said alkali silicates are sodium silicates. Further, said alkali silicates may be alkali orthosilicates or alkali metasilicates, the latter being preferred. Accordingly, it is especially preferred that the alkali silicate is sodium metasilicate.
  • the inorganic compound is selected from tetramethylorthosilicate, tetraethylorthosilicate, lithium orthosilicate, sodium orthosilicate, potassium orthosilicate, lithium metasilicate, sodium metasilicate, potassium metasilicate, and mixtures of two or more thereof. It is especially preferred that the inorganic compound is tetraethylorthosilicate or sodium metasilicate.
  • the present invention is further directed to the use of mesoporous silicon dioxide particles as a carrier for rheology modifiers, well cementing additives, and oilfield production scale additives as defined above.
  • the present invention is directed to a composition comprising mesoporous silicon dioxide particles and at least one additive incorporated therein.
  • the mesoporous silicon dioxide particles may have a pore size in the range from 1 to 25 nm, preferably from 1.5 to 15 nm, and in particular from 2 to 10 nm.
  • the pore size may be determined by Barrett-Joyner-Halenda (BJH) analysis.
  • the mesoporous silicon dioxide particles may have a pore volume in the range from 1 to 25 cmVg, preferably from 2 to 15 cm 3 /g, and in particular from 3 to 10 cm 3 /g- In another embodiment the mesoporous silicon dioxide particles may have a pore volume in the range from 0.5 to 10 cmVg, preferably from 0.5 to 5 cm 3 /g, and in particular from 0.8 to 2 cm 3 /g- The pore volume may be determined by Barrett-Joyner-Halenda (BJH) analysis.
  • BJH Barrett-Joyner-Halenda
  • the mesoporous silicon dioxide particles may have an average particle size in the range from 1 to 100 ⁇ , preferably from 5 to 70 ⁇ , in particular from 10 to 50 ⁇ . In another embodiment the mesoporous silicon dioxide particles may have an average particle size in the range from 0.1 to 100 ⁇ , preferably from 1 to 70 ⁇ , in particular from 10 to 50 ⁇ . The average particle size may be determined by laser diffraction.
  • the mesoporous silicon dioxide particles may have a surface area in the range from 500 to 1350 m 2 /g, preferably from 700 to 1150 m 2 /g- The surface area may be determined by BET analysis.
  • the mesoporous silicon dioxide particles are mesostructured with a hexagonal symmetry, such as hexagonally close packed cylindrical pore channels belonging to the p6mm space group.
  • Typical examples of mesoporous silicon dioxide particles with a hexagonal symmetry are MCM-41, FSM-16, SBA-3 and SBA-15.
  • the mesoporous silicon dioxide particles are preferably MCM-41 and SBA-15, wherein the BA- ' lb type is particularly preferred.
  • the preparation of SBA-15 is known from US 6,592,764 B1.
  • mesoporous silicon dioxide particles there are chemically modified mesoporous silicon dioxide particles known in the art.
  • the free hydroxy groups of the silicon dioxide surface may form chemical bonds with other functional groups in such chemically modified mesoporous silicon dioxide particles.
  • chemically modified mesoporous silicon dioxide particles have a different chemical structure compared to mesoporous silicon dioxide particles, which can be analyzed by 1 H-NMR or infrared spectroscopy.
  • the term “mesoporous silicon dioxide particles” may also be understood as “mesoporous silicon dioxide particles free of chemical modifications” or “mesoporous silicon dioxide particles with pristine surfaces", respectively.
  • the chemically modified mesoporous silicon dioxide particles may offer some disadvantages compared to mesoporous silicon dioxide particles, depending on the intended application: In case, the interaction of the loaded material with the silica material is enhanced by chemical modification, the release would be much slower, and additional chemical modification steps are indisputably required.
  • the mesoporous silicon dioxide particles are obtainable by contacting a surfactant (e.g. an amphiphilic block copolymer), an inorganic compound selected from tetraalkylsilicates and/or alkali silicates as defined above, and an acidifying agent.
  • a surfactant e.g. an amphiphilic block copolymer
  • an inorganic compound selected from tetraalkylsilicates and/or alkali silicates as defined above e.g. an amphiphilic block copolymer
  • the weight ratio of the mesoporous silicon dioxide particles to the additive may be in the range from 45 : 55 to 99.5 : 0.5, more preferably in the range from 65 : 35 to 99 : 1, still more preferably in the range from 80 : 20 to 98.5 : 1.5, like in the range from 85 : 15 to 98 : 2.
  • the inventive composition comprises, more preferably consists of, 0.5 to 55.0 wt.-%, more preferably 1.0 to 35.0 wt.-%, still more preferably 1.5 to 20.0 wt.-%, like 2.0 to 5.0 wt.-% of the additive and 45.0 to 99.5 wt.-%, more preferably 65.0 to 99.0 wt.-%, still more preferably 80.0 to 98.5 wt.-%, like 85.0 to 98 wt.-% of the mesoporous silicon dioxide particles, based on the overall weight of the composition.
  • the mesoporous silicon dioxide particles (e.g. of the SBA-15 type) have a pore size in the range from 1 to 25 nm and a surface area in the range from 500 to 1350 m 2 /g.
  • the mesoporous silicon dioxide particles (e.g. of the SBA-15 type) have a pore size in the range from 1.5 to 15 nm and a surface area in the range from 700to 1350 m 2 /g. In another preferred embodiment the mesoporous silicon dioxide particles (e.g. of the SBA-15 type) have a pore size in the range from 2 to 10 nm and a surface area in the range from 700 to 1350 m 2 /g.
  • the mesoporous silicon dioxide particles (e.g. of the SBA-15 type) have a pore size in the range from 2 to 10 nm and a surface area in the range from 500 to 1350 m 2 /g.
  • the additive e.g. of the SBA-15 type
  • the additive incorporated into the mesoporous silicon dioxide particles is an additive applied in oil field applications. Accordingly, it is preferred that the additive is a rheology modifier, a well cementing additive, an oilfield production scale additive or a mixture of two or more thereof.
  • the additive is selected from a breaker and/or a crosslinker, an accelerator, retarder or expansion additive for cement, a scale inhibitor, a corrosion inhibitor, a shut-off control additive, a shale inhibitor and mixtures of two or more thereof.
  • the additive is selected from organic and inorganic peroxides, organic and inorganic acids, enzymes, amines, borates, zirconium compounds, titanium compounds, aluminum compounds, terpenes, CaCI 2 , Ca(N0 3 ) 2 , NaN0 3 , lignosulphonates, hydroxycarboxylic acids, saccharide compounds, cellulose derivatives, organophosphates, sodium chloride, zinc oxide, lead oxide, CaO, MgO, scale inhibitors, corrosion inhibitors, shut-off control additives, shale inhibitors, and mixtures of two or more thereof.
  • the additive is not an enzyme.
  • enzymes are excluded from the term "additive" as used herein.
  • the additive is selected from organic and inorganic peroxides, organic and inorganic acids, amines, borates, zirconium compounds, titanium compounds, aluminum compounds, terpenes, CaCI 2 , Ca(N0 3 ) 2 , NaN0 3 , lignosulphonates, hydroxycarboxylic acids, saccharide compounds, cellulose derivatives, organophosphates, sodium chloride, zinc oxide, lead oxide, CaO, MgO, scale inhibitors, corrosion inhibitors, shut-off control additives, shale inhibitors, and mixtures of two or more thereof.
  • the additive is selected from methane sulfonic acid, p-toluene sulfonic acid, benzoyl peroxide, sodium peroxide, K 2 S 2 0 8 , triethanolamine, borax,
  • zirconiumchloride dioxide CaCI 2 , Ca(N0 3 ) 2 , NaN0 3 , lignosulphonates, hydroxycarboxylic acids, saccharide compounds, cellulose derivatives, organophosphates, sodium chloride, zinc oxide, lead oxide, CaO, MgO, scale inhibitors, corrosion inhibitors, shut-off control additives, shale inhibitors, and mixtures of two or more thereof.
  • additives used in the field of hydraulic fracturing are incorporated into the mesoporous silicon dioxide particles.
  • fracking fluid usually contains water and sand or other proppants and is injected into a wellbore in order to create fractures allowing natural gas and petroleum to flow more freely.
  • the proppants are transported into the fractures with the fracking fluid and hold the fractures open.
  • fouling fluid as used herein is related to a composition used for high-pressure injection into a wellbore, said composition containing proppants and optionally further additives such as polymers, surfactants, friction reducers, guar gum, biocides, emulsion breakers, and emulsifiers.
  • proppant as used herein is related to a solid material applicable for keeping a fracture induced by hydraulic fracturing open. Non-limiting examples for proppants used in hydraulic fracturing are sand and ceramic materials.
  • the fracking fluid usually contains additives having an influence on the viscosity of the fracking fluid.
  • the fracking fluid is usually thickened to allow a good transport of the proppant, but said thickening effect has to be repealed in order to enable an effective runoff of the liquid after the proppant has filled the fractures.
  • the fracking fluid usually contains at least one rheology modifier in order to adapt the viscosity of the fracking fluid to the respective environment and requirements within the well.
  • rheology modifier as used herein is related to an additive having the effect of increasing or decreasing the viscosity of a fluid.
  • said fluid is preferably a fracking fluid.
  • the inventive composition comprises mesoporous silicon dioxide particles and a rheology modifier incorporated in said mesoporous silicon dioxide particles.
  • Said rheology modifier preferably is a crosslinker and/or a breaker.
  • a crosslinker effectively increases the molecular weight of polymeric additives in the fracturing fluid whereupon the viscosity is increased.
  • Non-limiting examples for crosslinkers used in fracking fluids are amines, borates, zirconium compounds, titanium compounds, aluminum compounds, and terpenes. Therefore, according to a preferred embodiment of the present invention, the rheology modifier incorporated into the mesoporous silicon dioxide particles can be a borate, a zirconium compound, a titanium compound, an aluminum compound, a terpene or a mixture of two or more thereof.
  • Particularly preferred crosslinkers are triethanolamine, borax, and zirconiumchloride dioxide.
  • An especially preferred crosslinker is borax.
  • the application of a breaker decreases the molecular weight of polymeric additives whereupon the viscosity of the fracturing fluid is decreased.
  • breakers are organic and inorganic peroxides, organic and inorganic acids, and enzymes. Therefore, additionally or alternatively to the previous paragraph, the rheology modifier incorporated into the mesoporous silicon dioxide particles according to a preferred embodiment of the present invention can be an organic or inorganic peroxide, an organic or inorganic acid, an enzyme or a mixture of two or more thereof.
  • breakers are methane sulfonic acid, p-toluene sulfonic acid, benzoyl peroxide, sodium peroxide, K 2 S 2 0 8 or mixtures of two or more thereof.
  • the rheology modifier incorporated into the mesoporous silicon dioxide particles is selected from amines, borates, zirconium compounds, titanium compounds, aluminum compounds, terpenes, organic and inorganic peroxides, organic and inorganic acids, enzymes, and mixtures of two or more thereof.
  • the rheology modifier is selected from triethanolamine, borax, zirconiumchloride dioxide, methane sulfonic acid, p- toluene sulfonic acid, benzoyl peroxide, sodium peroxide, K 2 S 2 0 8 , and mixtures of two or more thereof.
  • additives used in the field of well cementing are incorporated into the mesoporous silicon dioxide particles.
  • the process of well cementing involves introducing cement into the annular space between the wellbore and the casing.
  • a wet cement composition is introduced into the well.
  • Suitable cement compositions are known in the art and can be used in combination with additives which affect the hardening process in order to cover a wide range of well depths and temperatures.
  • Typical additives in the field of well cementing are accelerators, retarders or expansion additives.
  • the term "accelerator” is related to an additive that accelerates the hardening process and/or shortens the setting time of a cement composition.
  • Non-limiting examples for accelerators are alkali or earth alkali metal salts such as CaCI 2 , Ca(N0 3 ) 2 or NaN0 3 .
  • the additive used in the field of well cementing incorporated into the mesoporous silicon dioxide particles is an alkali or earth alkali metal salt such as CaCI 2 , Ca(N0 3 ) 2 or NaN0 3 .
  • retarder is related to an additive that delays the setting time of a cement composition.
  • Non-limiting examples for retarders are lignosulphonates,
  • hydroxycarboxylic acids saccharide compounds, cellulose derivatives, organophosphates, sodium chloride, zinc oxide or lead oxide.
  • the additive used in the field of well cementing incorporated into the mesoporous silicon dioxide particles is a lignosulphonate, hydroxycarboxylic acid, saccharide compound, cellulose derivative,
  • organophosphate sodium chloride, zinc oxide, lead oxide or a mixture of two or more thereof.
  • expansion additives is related to an additive that compensates the shrinkage of a cement composition.
  • Non-limiting examples for expansion additives are earth alkali metal oxides such as CaO or MgO.
  • the additive used in the field of well cementing incorporated into the mesoporous silicon dioxide particles is CaO and/or MgO.
  • additives used in the field of oilfield production scale are incorporated into the mesoporous silicon dioxide particles.
  • Oilfield scale inhibition is known in the art as a process of preventing the formation of scale.
  • scale is related to a hard solid resulting from the aggregation and precipitation of mineral compounds present in water and occurs in pipelines, valves and pumps used in oil production and processing where it blocks or hinders the fluid flow. It may consist of one or more types of mineral compounds deposited with other debris such as organic material and sand. Scale that commonly occurs in oilfield production comprises calcite, barite, gypsum, siderite, FeS, sodium chloride, and calcium sulfate. To prevent the formation of scale in oilfield production, scale inhibitors are applied. As used herein, the term “scale inhibitor” is related to an additive which is added to oil production systems to delay, reduce and/or prevent the formation of scale.
  • the additive used in the field of oilfield production scale incorporated into the mesoporous silicon dioxide particles is a scale inhibitor selected from PBTC (phosphonobutane-1,2,4-tricarboxylic acid), ATMP (amino- trimethylene phosphonic acid) and HEDP (1-hydroxyethylidene-1,1-diphosphonic acid), polyacrylic acid (PAA), phosphinopolyacrylates (such as PPCA), polymaleic acids (PMA), maleic acid terpolymers (MAT), sulfonic acid copolymers, such as SPOCA (sulfonated phosphonocarboxylic acid), polyvinyl sulfonates, poly-phosphono carboxylic acid (PPCA),
  • PBTC phosphonobutane-1,2,4-tricarboxylic acid
  • ATMP amino- trimethylene phosphonic acid
  • HEDP 1-hydroxyethylidene-1,1-diphosphonic acid
  • PAA polyacrylic acid
  • DTPMP diethylenetriaminepenta(methylene phosphonic acid)
  • the mesoporous silicon dioxide particles may also contain corrosion inhibitors.
  • the term "corrosion inhibitor” is related to an additive that protects metal equipment of oil production systems from corrosion.
  • Non-limiting examples for corrosion inhibitors are lower alcohols, ammonium salts, sulfites and acetylene derivatives. Therefore, according to a preferred embodiment of the present invention, the additive used in the field of oilfield production scale incorporated into the mesoporous silicon dioxide particles is a corrosion inhibitor selected from lower alcohols, ammonium salts, sulfites, acetylene derivatives, and mixtures of two or more thereof.
  • the control of production water is also important in the field of production scale.
  • the handling of the excess water leads to higher production costs.
  • unwanted fluid production can be prevented by the application of shut-off control additives.
  • shut-off control additives is related to additives capable of preventing the formation or absorbing excess water produced in oil wells.
  • Preferred shut-off control additives are water absorbing polymers.
  • the mesoporous silicon dioxide particles may also contain water absorbing polymers. Therefore, according to a preferred embodiment of the present invention, the additive used in the field of oilfield production scale incorporated into the mesoporous silicon dioxide particles is a water absorbing polymer selected from polyacrylamides.
  • shale inhibitors are applied to increase the efficiency of the drilling process.
  • shale inhibitor is related to an additive that prevents shale trom swelling.
  • Non-limiting examples for shale inhibitors are oligomeric cationic amines, partially hydrolyzed polyacrylamide and polyglycols.
  • the additive used in the field of oilfield production scale incorporated into the mesoporous silicon dioxide particles is selected from oligomeric cationic amines, partially hydrolyzed polyacrylamide, polyglycols, and mixtures of two or more thereof.
  • XRD measurements were performed on a AXS D8 (Co. Bruker). The machine was equipped with a Cu-X-ray generator and SolX-detector in ⁇ / ⁇ -geometry. The samples were measured in the range 0.8° ⁇ 2 ⁇ ⁇ 80°. The data were analyzed by the Rietveld-method employing the software- package Bruker DIFFRAC.TOPAS. SEM/EDX measurements were performed on a Phenom X pro desktop electron microscope (Co. LOT-QuantumDesign).
  • TGA measurements were performed on a TGA/SDTA851e (Co. Mettler Toledo). pH measurements were performed using an ALMEMO® 2590A (Co. Ahlborn) equipped with a pH electrode.
  • a dry powder of mesoporous silicon dioxide particles was prepared according to literature from an aqueous solution of either sodium silicate, potassium silicate or tetraethoxysilane and
  • Pluronic® P123 (amphiphilic block copolymer of EO/PO/EO structure, average molecular weight 5750 g/mol, 30 wt.-% EO), which was acidified and dried to yield SBA-15 type.
  • the surface area of the mesoporous silicon dioxide particles was 728 m 2 /g as determined by BET analysis.
  • the pore size of the mesoporous silicon dioxide particles was 6.9 nm as determined by Barrett-Joyner-Halenda (BJH) analysis.
  • the pore volume of the mesoporous silicon dioxide particles was 0.966 cm 3 /g as determined by Barrett-Joyner-Halenda (BJH) analysis.
  • the average particle size of the mesoporous silicon dioxide particles was 10 to 50 ⁇ as determined by laser diffraction. Examples 2-7: Loading of mesoporous silica with additives
  • Mesoporous silicon dioxide particles loaded with CaO, MgO, methane sulfonic acid (MSA), CaCI 2 , K2S2O8, and borax were prepared using the incipient wetness approach. Solutions of the additives in water with concentrations as indicated in Table 1 were prepared. 10 g samples of the dry powder obtained according to Example 1 were soaked with the solutions of the additives and slowly dried in a rotary evaporator. CaO and MgO were obtained from calcination of the encapsulated metal salts Ca(N0 3 )2 and Mg(N0 3 ) 2 -6 H 2 0. In case of CaCI 2 , K 2 S 2 08, and borax, the remaining powder was dried at lower temperatures.
  • Loading of the mesoporous silicon dioxide particles was proven by XRD and SEM/EDX. In case of borax, release of borax was additionally tested by guar gelation. Loaded mesoporous silicon dioxide particles could be approved by XRD. After calcination to 550 °C of loaded mesoporous silicon dioxide particles, formation of the appropriate metal oxide occurs (e.g. CaO from Ca(N0 3 ) 2 ). If all of the metal salt is located inside the pores of the loaded mesoporous silicon dioxide particles, small metal oxide nanoparticles will be created within the pores. As the pore size is below 10 nm, no nanoparticles with diameters larger than 10 nm will be obtained. Such particles do not show sharp peaks in XRD as it is the case in all XRD patterns taken.
  • FIG. 1 shows similar surfaces (SBET), pore sizes, and pore volumes (Vtot) in case of Ex3, Ex4, and Ex7 if compared to a non-loaded reference. Surface values and pore volumes are a little bit lower compared to the reference. This is a result of the fact that the loading blocks some parts of the pores in the loaded mesoporous silicon dioxide particles.
  • Figure 2 shows a representative SEM image of as- pre pa red mesoporous silicon dioxide particles. As only inner pores of loaded mesoporous silicon dioxide particles are loaded, SEM images from all samples are similar to the image shown by Figure 2.
  • EDX is a method to detect elements with an atomic number higher than 10 which allows validation of loading by the detection of corresponding atoms (e.g. Ca in Ex2). The resulting values c(M)/c(Si) are summarized in Table 2.
  • Examples 8-11 Loading of mesoporous silica with additives
  • Loading of mesoporous silicon dioxide particles with methane sulfonic acid (MSA), p-toluene sulfonic acid (PTSA), benzoyl peroxide (BPO), and sodium peroxide was performed in water, tetrahydrofuran (THF) or mixtures thereof using the incipient wetness approach.
  • MSA methane sulfonic acid
  • PTSA p-toluene sulfonic acid
  • BPO benzoyl peroxide
  • sodium peroxide was performed in water, tetrahydrofuran (THF) or mixtures thereof using the incipient wetness approach.
  • 5 g of mesoporous silicon dioxide particles prepared according to Example 1 were soaked in the appropriate solution of the precursors (10 wt.-% additive based on the amount of mesoporous silicon dioxide particles) and slowly dried in
  • FIGS 3, 4, and 5 show time dependent pH measurements of the compositions obtained according to Examples 8 to 10.

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Abstract

La présente invention porte sur une composition comprenant des particules mésoporeuses de dioxyde de silicium et au moins un additif pour des applications en champ pétrolifère incorporé dans celles-ci. La présente invention porte en outre sur un procédé pour la préparation de ladite composition par la mise en contact de particules mésoporeuses de dioxyde de silicium avec ledit ou lesdits additifs et sur l'utilisation de particules mésoporeuses de dioxyde de silicium en tant que support pour des additifs.
PCT/EP2018/062655 2017-05-17 2018-05-16 Composition comprenant des particules mésoporeuses de dioxyde de silicium WO2018210902A1 (fr)

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CN111154470A (zh) * 2020-02-21 2020-05-15 四川振邦石油科技有限公司 一种缓释型固体缓蚀剂、制备方法及应用
CN111228512A (zh) * 2020-01-19 2020-06-05 齐鲁工业大学 一种pH响应型搭载β-榄香烯介孔二氧化硅纳米粒及其制备方法与应用
CN112680207A (zh) * 2020-12-25 2021-04-20 河北峻极化工科技有限公司 油田采油用表面活性剂组合物及其制备方法
CN114516988A (zh) * 2022-02-24 2022-05-20 天津金发新材料有限公司 一种中频吸音的聚丙烯组合物及其制备方法和应用
CN115784663A (zh) * 2021-09-10 2023-03-14 中国石油化工股份有限公司 一种活性组分缓释材料及其制备方法和应用
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CN109943303A (zh) * 2019-04-16 2019-06-28 中国石油集团长城钻探工程有限公司固井公司 一种油井水泥无氯促凝早强剂及其制备方法和应用
CN111228512A (zh) * 2020-01-19 2020-06-05 齐鲁工业大学 一种pH响应型搭载β-榄香烯介孔二氧化硅纳米粒及其制备方法与应用
CN111154470A (zh) * 2020-02-21 2020-05-15 四川振邦石油科技有限公司 一种缓释型固体缓蚀剂、制备方法及应用
CN112680207A (zh) * 2020-12-25 2021-04-20 河北峻极化工科技有限公司 油田采油用表面活性剂组合物及其制备方法
CN115784663A (zh) * 2021-09-10 2023-03-14 中国石油化工股份有限公司 一种活性组分缓释材料及其制备方法和应用
CN115784656A (zh) * 2021-09-10 2023-03-14 中国石油化工股份有限公司 负载型多孔材料及其制备方法与在油田固井领域的应用
CN114516988A (zh) * 2022-02-24 2022-05-20 天津金发新材料有限公司 一种中频吸音的聚丙烯组合物及其制备方法和应用
CN114516988B (zh) * 2022-02-24 2023-06-06 天津金发新材料有限公司 一种中频吸音的聚丙烯组合物及其制备方法和应用

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