CN108517205B - Low-friction composite nano proppant and preparation method thereof - Google Patents
Low-friction composite nano proppant and preparation method thereof Download PDFInfo
- Publication number
- CN108517205B CN108517205B CN201810469590.0A CN201810469590A CN108517205B CN 108517205 B CN108517205 B CN 108517205B CN 201810469590 A CN201810469590 A CN 201810469590A CN 108517205 B CN108517205 B CN 108517205B
- Authority
- CN
- China
- Prior art keywords
- composite nano
- proppant
- aggregate
- polyacrylamide
- nano
- 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.)
- Active
Links
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
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/18—Suspension polymerisation
-
- 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
- C08F212/00—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 an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- 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
-
- 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
- C09K2208/34—Lubricant additives
Abstract
The invention belongs to the technical field of organic polymer materials, and discloses a preparation method of a low-friction composite nano proppant, which comprises the following steps: (1) taking styrene derivatives, acrylic acid derivatives and divinylbenzene as comonomers, adding modified nano-fillers, and carrying out suspension polymerization to form a high molecular polymer to obtain a composite nano aggregate; (2) carrying out suction filtration on the composite nano aggregate until the water content is less than 20%; (3) preparing a drag reducer; (4) adding polyacrylamide, drag reducer and surfactant into the dried composite nano aggregate, mixing uniformly, drying and curing. Compared with the prior art, the proppant prepared by the method quickly releases water-soluble substances for reducing friction resistance in clear water, so that the friction resistance is lower when clear water is used as fracturing sand-carrying liquid in fracturing construction by using the proppant compared with when pure clear water is used for fracturing sand-carrying liquid, the process for fracturing by using the traditional fracturing liquid is further simplified and simple, and the use cost of the fracturing liquid is low.
Description
Technical Field
The invention belongs to the technical field of organic polymer materials, and particularly discloses a low-friction composite nano proppant and a preparation method thereof.
Background
The proppant is natural sand or artificial high-strength ceramic particles with certain granularity and gradation, has high fracturing strength, is mainly used for underground support of oil fields to increase the yield of petroleum and natural gas, and belongs to an environment-friendly product. The proppant is totally divided into two categories, one category is the composite proppant which is prepared from complete inorganic materials and does not contain any organic matter, and the proppant is usually quartz sand and artificial ceramsite sand; the other is a resin coated proppant prepared by coating an organic matter layer outside an inorganic material, and the coated proppant is generally divided into two categories according to the function difference of a resin film, namely a curable coated proppant and a precured coated proppant.
The proppant, regardless of whether it is uncoated or coated, can be classified into quartz proppant and ceramsite proppant according to the aggregate used. The quartz sand proppant mainly comprises more than 90 percent of silicon dioxide, and the rest of contained metal oxides belong to an associated phase or a surface attachment phase in a quartz sand crystal phase, so that the appearance of the quartz sand proppant is poorer in sphericity and higher in acid solubility compared with artificial ceramsite. The phase of the artificial ceramsite is mainly a composite crystalline phase such as a mullite phase and a silicon-aluminum phase formed by melting silica and alumina at high temperature under the action of a cosolvent, so that the artificial ceramsite has the characteristics of relatively high crushing resistance, good sphericity, low acid solubility and the like.
The proppant is used in the fracturing process of petroleum production, and the fracturing fluid prepared from water carries the proppant into a bottom layer fracture to perform the fracturing action on the petroleum production. The common fracturing fluid comprises a guanidine gum system and a slickwater system, and because the clear water has poor sand carrying capacity and high friction resistance, various additives are added into the clear water, so that the prepared fracturing fluid can improve the sand carrying capacity and reduce the friction resistance, thereby reducing the requirement on equipment and reducing the energy consumption of the fracturing fluid in the pipeline conveying process. However, the suspension property of the existing proppant in water is poor, and the friction resistance of water cannot be reduced, so that the friction resistance of the existing fracturing fluid needs to be reduced and the sand carrying capacity of the fracturing fluid needs to be improved by adding some components, and the preparation process of the fracturing fluid is complex and high in cost.
Disclosure of Invention
The invention aims to provide a low-friction composite nano proppant and a preparation method thereof, and aims to solve the problems that the friction resistance of the prepared fracturing fluid is high, the fracturing effect is poor, the preparation process is complex and the cost is high due to the fact that the conventional proppant cannot reduce the friction resistance in water.
In order to achieve the purpose, the basic scheme of the invention is as follows: a preparation method of a low-friction composite nano proppant comprises the following steps:
(1) taking styrene derivatives and/or acrylic acid derivatives and divinylbenzene as comonomers, adding modified nano-fillers, and carrying out suspension polymerization to form a high molecular polymer to obtain a composite nano aggregate;
(2) after the polymerization reaction of the composite nano aggregate is finished, filtering water, and carrying out vacuum filtration until the water content is less than 20% for later use, or drying until the water content is less than 1% for later use; (ii) a
(3) Preparing a drag reducer, namely initiating acrylamide, acrylamide derivatives, acrylic acid, methacrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and sodium methallylsulfonate in water by an initiator to prepare a high molecular polymer aqueous solution, namely the drag reducer; the content of solid substances in the drag reducer is 8-15%, the number average molecular weight is not less than 100000, and the viscosity is 10-1000 cp;
(4) adding polyacrylamide, a drag reducer and a surfactant into the standby composite nano aggregate, wherein the polyacrylamide accounts for 0.01-0.2% of the mass fraction of the composite nano aggregate, the drag reducer accounts for 0.02-1% of the mass fraction of the composite nano aggregate, and the surfactant accounts for 0.01-0.5% of the mass fraction of the composite nano aggregate; mixing to make the added components adhere to the surface of the composite nanometer aggregate, drying and curing.
The beneficial effect of this basic scheme lies in:
1. in the method, the filler in the composite nano proppant is the modified nano filler, so that the apparent density of the composite nano proppant is less than 1.1g/cm3The sand-carrying agent has better suspension property in clear water, so that high sand-carrying capacity can be realized by directly using the clear water; the fracturing fluid prepared by the proppant has low friction resistance, thereby reducing the requirements on equipment in the use process of the fracturing fluid and reducing the energy consumption of the fracturing fluid in the pipeline conveying process.
2. According to the proppant prepared by the method, a layer of mixed substance of polyacrylamide, a drag reducer and a surfactant is attached to the outside of the proppant, so that the water solubility of drag reduction components of the prepared proppant is good, water-soluble substances for reducing friction can be quickly released in clear water, the friction of the fracturing fluid prepared by using the proppant is further low, the requirement on equipment in the use process of the fracturing fluid is reduced, and the energy consumption of the fracturing fluid in the pipeline conveying process is reduced.
3. The self-made drag reducer is attached to the outer surface of the composite nano proppant, the water solubility of the self-made drag reducer is better, and the prepared proppant can further quickly release water-soluble substances for reducing the friction resistance in clear water, so that the friction resistance of the fracturing fluid is reduced, and various performances of the fracturing fluid are better.
4. The proppant prepared by the method can quickly release water-soluble substances for reducing friction resistance in clear water, so that additives are not required to be prepared in the fracturing preparation process, the preparation process of the fracturing fluid is simplified, the friction resistance in fracturing construction is reduced, the required pumping power is reduced, the good suspension property of the proppant is combined, and the exploitation of unconventional low-permeability reservoirs is facilitated.
Compared with the prior art, the proppant prepared by the method quickly releases water-soluble substances for reducing friction resistance in clear water, so that the friction resistance is lower when clear water is used as fracturing sand-carrying liquid in fracturing construction using the proppant compared with when pure clear water is used for fracturing sand-carrying liquid, the process for fracturing using the traditional fracturing liquid is further simplified and simple, the use cost of the fracturing liquid is low, and the clear water can be used for completely replacing the traditional slickwater to be used as the sand-carrying liquid.
Further, in the step (1), the styrene derivative includes one or more of styrene, methyl styrene, ethyl styrene and dimethyl styrene; the acrylic acid derivative comprises one or more than two of methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, octadecyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, octadecyl methacrylate, methoxy polyethylene glycol methacrylate, methacrylic acid and allyl methacrylate; the modified nano filler comprises a nano material compositely modified by a surfactant, a silane coupling agent, a titanate coupling agent, cellulose modified glass fiber, a simple substance of silicon, titanium, iron, aluminum and carbon or an oxide (or nitride) compound of any one of the components.
The materials are easy to obtain, have low cost and are suitable for serving as styrene derivatives, acrylic acid derivatives and modified nano fillers required by the method.
Further, the nano material comprises one or more than two of carbon nano tube, carbon nano fiber, nano carbon black, nano glass fiber, nano talcum powder, nano nitride, nano carbide, nano sulfide, nano boride, nano salt compound, nano alloy, nano metal oxide, nano metal and nano rare earth compound.
The materials are easy to obtain, have low cost and are suitable for being used as the nano materials required by the method.
Further, in the step (3), the acrylamide derivative comprises one or more of methacrylamide, N-methylolacrylamide, N-isopropylacrylamide, N-dimethylacrylamide and diacetone acrylamide; the initiator comprises one or two mixtures of water-soluble azo initiator and persulfate.
The above materials are easily available and low in cost, and are suitable for being used as the acrylamide derivative and the initiator required in the step (3) of the method.
Further, in the step (3), the water-soluble azo initiator comprises one or more of azobisisobutylamidine hydrochloride, azobisisobutylimidazoline hydrochloride, azobiscyanovaleric acid and azobisisopropylimidazoline; the persulfate comprises one or more than two of potassium persulfate, sodium persulfate and ammonium persulfate, and the viscosity of the drag reducer is 15-800 cp.
The viscosity of the drag reducer is 15-800cp, so that the prepared proppant has better water solubility and can be quickly released in clear water to reduce the friction resistance.
Further, the viscosity of the drag reducer in the step (3) is 20-100 cp.
Further, preparing the drag reducer in the step (3), adding 85-93% of water, 5-10% of acrylamide and acrylamide derivatives, 0.5-2% of acrylic acid and methacrylic acid, 1-5% of 2-acrylamide-2-methylpropanesulfonic acid and 0.5-3% of sodium methallylsulfonate according to mass fraction, stirring at 220rpm for 150 ℃, heating to 40-70 ℃, adding the initiator accounting for 0.3-2% of the total mass, reacting for 3-40min, and cooling to normal temperature for later use.
Further, in the step (3), the polyacrylamide is one of cationic polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide and zwitterionic polyacrylamide, or a mixture of nonionic polyacrylamide and any one of the other polyacrylamide.
Further, in the step (4), the surfactant includes one or more of organic chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, and sodium dodecyl sulfate, and the organic fluoride includes one or more of epichlorohydrin, chlorobenzene, chloroacetic acid, and benzyl chloride.
Further, in the step (4), before or after the components are dried, polyvinyl alcohol polymer emulsion is added, and then the components are dried.
The composite nano proppant is more firm because the water-soluble film is coated outside after the anti-drag component is attached to the composite nano proppant, and the anti-drag component cannot fall off after screening or other treatment processes.
The invention also provides a low-friction composite nano proppant prepared by the method according to any one of claims 1 to 9. The low-friction composite nano proppant prepared by the preparation method has low friction resistance of the prepared fracturing fluid and simple preparation process.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
example 1
The embodiment discloses a preparation method of a low-friction composite nano proppant, which comprises the following steps:
(1) taking styrene derivatives and/or acrylic acid derivatives and divinylbenzene as comonomers, adding modified nano-fillers, and carrying out suspension polymerization to form a high molecular polymer to obtain a composite nano aggregate;
the styrene derivative comprises one or more of styrene, methyl styrene, ethyl styrene and dimethyl styrene;
the acrylic acid derivative comprises one or more of methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, stearyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, stearyl methacrylate, methoxypolyethylene glycol methacrylate, methacrylic acid and allyl methacrylate;
the modified nano filler comprises a nano material which is compositely modified by a surfactant, a silane coupling agent, a titanate coupling agent, cellulose modification, glass fiber, a simple substance of silicon-titanium-iron-aluminum-carbon or an oxide (or nitride) compound or any component;
the nano material comprises one or more than two of carbon nano tube, carbon nano fiber, nano carbon black, nano glass fiber, nano talcum powder, nano nitride, nano carbide, nano sulfide, nano boride, nano salt compound, nano alloy, nano metal oxide, nano metal and nano rare earth compound.
(2) And (3) after the polymerization reaction of the composite nano aggregate is finished, filtering water, and carrying out vacuum filtration until the water content is less than 20% for later use, or drying until the water content is less than 1% for later use.
(3) Preparing a drag reducer, adding 85-93% of water, 5-10% of acrylamide and acrylamide derivatives, 0.5-2% of acrylic acid and methacrylic acid, 1-5% of 2-acrylamide-2-methylpropanesulfonic acid and 0.5-3% of sodium methallylsulfonate according to mass fraction, stirring at 150-220rpm, heating to 40-70 ℃, adding an initiator accounting for 0.3-2% of the total mass, reacting for 3-40min, and cooling to normal temperature to obtain the drag reducer for later use;
the content of solid substances in the drag reducer is 8-15%, the drag reducer is transparent and viscous, the number average molecular weight is not less than 100000, and the viscosity is 10-1000 cp;
the acrylamide derivative comprises one or more of methacrylamide, N-hydroxymethyl acrylamide, N-isopropyl acrylamide, N-dimethyl acrylamide and diacetone acrylamide;
the initiator comprises one or two mixtures of water-soluble azo initiator and persulfate; the water-soluble azo initiator comprises one or more of azodiisobutyl amidine hydrochloride, azodiisobutyl imidazoline hydrochloride, azodicyano valeric acid and azodiisopropyl imidazoline; the persulfate includes one or more of potassium persulfate, sodium persulfate and ammonium persulfate.
(4) Adding polyacrylamide, a drag reducer and a surfactant into the standby composite nano aggregate, wherein the polyacrylamide accounts for 0.01 percent of the mass fraction of the composite nano aggregate, the drag reducer accounts for 0.02 percent of the mass fraction of the composite nano aggregate, and the surfactant accounts for 0.01 percent of the mass fraction of the composite nano aggregate; and uniformly mixing, so that the added components are mutually matched and cooperate to disperse, infiltrate, adsorb and permeate on the surface of the aggregate into a polymer grid body of the aggregate, and are combined to form an anchoring structure through intermolecular forces (van der Waals force, dispersion force and the like) generated by charged groups among molecules, thereby forming a distribution layer of each component on the aggregate from inside to outside. The micromolecule component is arranged on the innermost layer of the aggregate surface and partially permeates into the polymer mesh body of the aggregate, the surfactant component is distributed between the aggregate and a liquid phase interface, the high molecular weight material is arranged on the outermost layer to form a compound surface distribution state attached to the compound nanometer aggregate, and finally, the drying and the curing are carried out;
the polyacrylamide is one of cationic polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide and zwitterionic polyacrylamide, or a mixture of the nonionic polyacrylamide and any one of the cationic polyacrylamide and the anionic polyacrylamide, and the cationic polyacrylamide is preferred in the embodiment;
the surfactant comprises one or more than two of organic chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate, and the organic chloride comprises one or more than two of epichlorohydrin, chlorobenzene, chloroacetic acid and benzyl chloride; in this example the surfactant is preferably epichlorohydrin.
The progenitor reducing efficiency in the clear water fracturing fluid of the low-friction composite nano proppant obtained by the preparation method is reduced by more than 40 percent, and the clear water fracturing fluid can replace slickwater fracturing construction of the existing fracturing construction, wherein the apparent density of the proppant reaches 1.03-1.36g/m3。
Example 2
Example 2 differs from example 1 in that: in the step (4), the polyacrylamide is anionic polyacrylamide with the content of 0.2%; the drag reducer content was 1%, and the surfactant content was 0.5%.
Example 3
Example 3 differs from example 1 in that: in the step (4), the polyacrylamide is anionic polyacrylamide with the content of 0.1%; the drag reducer content is 0.8%; the surfactant is benzyl chloride, and the content of the benzyl chloride is 0.08%.
Example 4
Example 4 differs from example 1 in that: in the step (4), the polyacrylamide is amphoteric polyacrylamide with the content of 0.1%; the drag reducer content was 0.5%, and the surfactant content was 0.1%.
Example 5
Example 5 differs from example 4 in that: in the step (4), adding polyacrylamide, a drag reducer and a surfactant into the composite nano aggregate, adding polyvinyl alcohol polymer emulsion before or after drying, and drying; the added polymer emulsion is polyvinyl alcohol polymer emulsion, and the content of the added polymer emulsion is 0.02 percent.
Comparative example 1
Comparative example 1 differs from example 1 in that: the composite nano aggregate is directly used as the composite nano proppant without being treated in the step (4).
Comparative example 2
Comparative example 2 differs from example 1 in that: this comparative example used quartz or ceramsite as aggregate.
According to the methods of examples 1 to 5, and comparative examples 1 and 2, proppants were prepared separately, and the prepared proppants were classified into groups a and B. Respectively mixing the group A proppant with clean water according to the proportion of 1:4, stirring for 1min, and respectively measuring the friction resistance. Vibrating the group B proppants on a vibrating screen for 30min respectively, mixing and stirring the group B proppants and clear water according to the proportion of 1:4 respectively for 1min, and measuring the friction resistance of the group B proppants respectively. The results are shown in the following table.
And (4) comparing and concluding:
1. as can be seen by comparing the example 1 with the comparative example 2, the proppant prepared by using the composite nano aggregate has better suspension property in clear water, so that the friction resistance of fracturing construction can be greatly reduced on the basis of high sand carrying capacity by directly using the clear water. Although both proppants can reduce the friction resistance of water, the proppant prepared by using the composite nano aggregate has better suspension property in clear water. Unlike quartz or ceramsite which needs to be added with components for increasing sand carrying capacity in water to achieve better fracturing effect, the proppant prepared from the composite nano aggregate can achieve high sand carrying capacity and drag reduction effect by directly using clear water, so that the fracturing cost is greatly reduced.
2. As can be seen by comparing examples 1-4 with comparative example 1, the drag reducer, the polyacrylamide and the surfactant are attached to the outside of the composite nano aggregate, so that the drag reduction component of the prepared proppant has better water solubility, and a water-soluble substance for reducing the friction resistance can be quickly released in clear water, so that the friction resistance of the fracturing construction using the proppant is further low, the requirement on equipment in the use process of the fracturing fluid is reduced, and the energy consumption of the fracturing fluid in the pipeline conveying process is reduced.
3. By comparing examples 2 and 4 with example 5 and comparative example 2, it can be seen that the proppant can be made more firm by coating a water-soluble film on the outside of the composite nano proppant after attaching the drag reducing component, and the drag reducing component will not fall off after sieving or other treatment processes.
Claims (10)
1. A preparation method of a low-friction composite nano proppant is characterized by comprising the following steps:
(1) taking styrene derivatives and/or acrylic acid derivatives and divinylbenzene as comonomers, adding modified nano-fillers, and carrying out suspension polymerization to form a high molecular polymer to obtain a composite nano aggregate;
(2) after the polymerization reaction of the composite nano aggregate is finished, filtering water, and carrying out vacuum filtration until the water content is less than 20% for later use, or drying until the water content is less than 1% for later use;
(3) preparing a drag reducer: adding 85-93% of water, 5-10% of acrylamide and acrylamide derivatives, 0.5-2% of acrylic acid and methacrylic acid, 1-5% of 2-acrylamide-2-methylpropanesulfonic acid and 0.5-3% of sodium methallylsulfonate according to the mass fraction, stirring at the speed of 150-220rpm, heating to 40-70 ℃, adding an initiator accounting for 0.3-2% of the total mass, reacting for 3-40min, and cooling to the normal temperature; the content of solid substances in the drag reducer is 8-15%, the number average molecular weight is not less than 100000, and the viscosity is 10-1000 cp;
(4) adding polyacrylamide, a drag reducer and a surfactant into the standby composite nano aggregate, wherein the polyacrylamide accounts for 0.01-0.2% of the mass fraction of the composite nano aggregate, the drag reducer accounts for 0.02-1% of the mass fraction of the composite nano aggregate, and the surfactant accounts for 0.01-0.5% of the mass fraction of the composite nano aggregate; mixing to make the added components adhere to the surface of the composite nanometer aggregate, drying and curing.
2. The method for preparing a low-friction composite nano proppant as claimed in claim 1, wherein in the step (1), the styrene derivative comprises one or more of styrene, methyl styrene, ethyl styrene and dimethyl styrene; the acrylic acid derivative comprises one or more than two of methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, octadecyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, octadecyl methacrylate, methoxy polyethylene glycol methacrylate, methacrylic acid and allyl methacrylate; the modified nano filler comprises a nano material compositely modified by a surfactant, a silane coupling agent, a titanate coupling agent, cellulose modified glass fiber, a simple substance of silicon, titanium, iron, aluminum and carbon, or oxygen or nitride or any component.
3. The method of claim 2, wherein the nano-materials comprise one or more of carbon nanotubes, carbon nanofibers, carbon blacks, glass nanofibers, talc nanoparticles, nitrides nanoparticles, carbides, sulfides, borides, salts, alloys, metal oxides, metals, and rare earth nanoparticles.
4. The method of claim 1, wherein in step (3), the acrylamide derivative comprises one or more of methacrylamide, N-methylolacrylamide, N-isopropylacrylamide, N-dimethylacrylamide and diacetone acrylamide; the initiator comprises one or two mixtures of water-soluble azo initiator and persulfate.
5. The method of claim 4, wherein in step (3), the water-soluble azo initiator comprises one or more of azobisisobutylamidine hydrochloride, azobisisobutylimidazoline hydrochloride, azobiscyanovaleric acid, and azobisdiisopropylimidazoline; the persulfate comprises one or more than two of potassium persulfate, sodium persulfate and ammonium persulfate, and the viscosity of the drag reducer is 15-800 cp.
6. The method of claim 5, wherein the viscosity of the drag reducer in step (3) is 20-100 cp.
7. The method of claim 1, wherein in step (4), the polyacrylamide is selected from cationic polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide, zwitterionic polyacrylamide, and a mixture of nonionic polyacrylamide and any other one.
8. The method for preparing a low-friction composite nano proppant as claimed in claim 7, wherein in the step (4), the surfactant comprises one or more of organic chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate, and the organic chloride comprises one or more of epichlorohydrin, chloroacetic acid and benzyl chloride.
9. The method for preparing a low-friction composite nano proppant as claimed in claim 8, wherein in step (4), after the components are added to the composite nano aggregate, the polyvinyl alcohol polymer emulsion is added before or after drying, and then drying is carried out.
10. A low friction composite nano proppant prepared by the method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469590.0A CN108517205B (en) | 2018-05-16 | 2018-05-16 | Low-friction composite nano proppant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469590.0A CN108517205B (en) | 2018-05-16 | 2018-05-16 | Low-friction composite nano proppant and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108517205A CN108517205A (en) | 2018-09-11 |
| CN108517205B true CN108517205B (en) | 2020-07-28 |
Family
ID=63427137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810469590.0A Active CN108517205B (en) | 2018-05-16 | 2018-05-16 | Low-friction composite nano proppant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108517205B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109135721A (en) * | 2018-09-30 | 2019-01-04 | 重庆长江造型材料（集团）股份有限公司 | A kind of preparation process from suspension covering material |
| CN109111911A (en) * | 2018-09-30 | 2019-01-01 | 重庆长江造型材料（集团）股份有限公司 | A kind of preparation process from suspension overlay film backing material |
| CN109181676A (en) * | 2018-09-30 | 2019-01-11 | 重庆长江造型材料（集团）股份有限公司 | A kind of overlay film backing material |
| CN109181675A (en) * | 2018-09-30 | 2019-01-11 | 重庆长江造型材料（集团）股份有限公司 | A kind of preparation method of overlay film backing material |
| CN109337668A (en) * | 2018-09-30 | 2019-02-15 | 重庆长江造型材料（集团）股份有限公司 | One kind is from suspension covering material |
| CN109233789A (en) * | 2018-09-30 | 2019-01-18 | 重庆长江造型材料（集团）股份有限公司 | One kind is from suspension overlay film backing material |
| CN113234430A (en) * | 2021-03-31 | 2021-08-10 | 宁波锋成先进能源材料研究院有限公司 | Nano drag reducer and preparation method and application thereof |
| CN115746192A (en) * | 2022-12-31 | 2023-03-07 | 西南石油大学 | Low-density high-strength proppant and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275694A (en) * | 2013-05-21 | 2013-09-04 | 中国地质大学（武汉） | Clean-water-carrying petroleum proppant for petroleum production of low-permeability petroleum reservoir and preparation method thereof |
| CN104151482A (en) * | 2014-08-13 | 2014-11-19 | 中国地质大学（武汉） | Preparation method of high-strength low-density fracturing propping agent |
| CN104364343A (en) * | 2012-04-19 | 2015-02-18 | 自悬浮支撑有限公司 | Self-suspending proppants for hydraulic fracturing |
| CN104946235A (en) * | 2014-03-28 | 2015-09-30 | 北京仁创科技集团有限公司 | Preparation method of self-suspension proppant and prepared proppant |
| CN105705609A (en) * | 2013-11-15 | 2016-06-22 | 陶氏环球技术有限责任公司 | Proppants with improved dust control |
-
2018
- 2018-05-16 CN CN201810469590.0A patent/CN108517205B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104364343A (en) * | 2012-04-19 | 2015-02-18 | 自悬浮支撑有限公司 | Self-suspending proppants for hydraulic fracturing |
| CN103275694A (en) * | 2013-05-21 | 2013-09-04 | 中国地质大学（武汉） | Clean-water-carrying petroleum proppant for petroleum production of low-permeability petroleum reservoir and preparation method thereof |
| CN105705609A (en) * | 2013-11-15 | 2016-06-22 | 陶氏环球技术有限责任公司 | Proppants with improved dust control |
| CN104946235A (en) * | 2014-03-28 | 2015-09-30 | 北京仁创科技集团有限公司 | Preparation method of self-suspension proppant and prepared proppant |
| CN104151482A (en) * | 2014-08-13 | 2014-11-19 | 中国地质大学（武汉） | Preparation method of high-strength low-density fracturing propping agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108517205A (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108517205B (en) | Low-friction composite nano proppant and preparation method thereof | |
| CN110157405B (en) | Tectorial membrane proppant for unconventional reservoir hydraulic fracturing, preparation and application | |
| EP1130215B1 (en) | Stimulating fluid production from unconsolidated formations | |
| CN108084989B (en) | Effervescent gas suspension proppant for slickwater fracturing and preparation method thereof | |
| CN110105933B (en) | High-temperature-resistant core/shell structure gel particle plugging agent and preparation method and application thereof | |
| CN110746956B (en) | Self-suspension hydraulic fracturing coated proppant with targeting function and preparation and application thereof | |
| CN112939527B (en) | Ultra-high-strength tough cement slurry system for well cementation and preparation and application thereof | |
| CN103254888A (en) | Clean-water carrying fracturing supporting agent and preparation method | |
| CN109777387B (en) | Repeated fracturing temporary plugging agent and preparation method and application thereof | |
| CN104893707A (en) | Self-suspension proppant for hydraulic fracturing and preparation method thereof | |
| CN109971451B (en) | Graphene oxide nano cross-linking agent for fracturing fluid and preparation method thereof | |
| CN103275694A (en) | Clean-water-carrying petroleum proppant for petroleum production of low-permeability petroleum reservoir and preparation method thereof | |
| CN109097019A (en) | A kind of Nanocomposites high temperature guar gum fracturing fluid | |
| CN106566516A (en) | Preparation method for guanidine gum fracturing fluid nanometer cross-linking agent with controllable structure | |
| CN108976366A (en) | A kind of hydrophobicity overlay film proppant and its preparation method and application | |
| CN108841372A (en) | Water-absorbing resins overlay film is from suspended prop and preparation method thereof | |
| CN115707721B (en) | Underground secondary cross-linked gel particles and preparation method and application thereof | |
| CN109679640A (en) | A kind of good fracturing fluid system of small, the outstanding sand of frictional resistance | |
| CN103980404B (en) | A kind of high-strength polymer microballoon and its preparation method and application | |
| CN107629771B (en) | Preparation method of low-viscosity high-shear oil well cement suspension stabilizer for large-temperature-difference well cementation | |
| CN109777394B (en) | Preparation method of self-suspending self-degrading proppant | |
| CN110700808B (en) | End sand-removing fracturing method | |
| CN110845175A (en) | Cement nano flexibilizer for natural gas-solid well | |
| CN111944499B (en) | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate and ultrafine particles and preparation method thereof | |
| WO2023020189A1 (en) | Oil-gas well, well cementation method, and cement composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |