CN108795404B - Self-suspending proppant for clean water fracturing and preparation method thereof - Google Patents
Self-suspending proppant for clean water fracturing and preparation method thereof Download PDFInfo
- Publication number
- CN108795404B CN108795404B CN201710284936.5A CN201710284936A CN108795404B CN 108795404 B CN108795404 B CN 108795404B CN 201710284936 A CN201710284936 A CN 201710284936A CN 108795404 B CN108795404 B CN 108795404B
- Authority
- CN
- China
- Prior art keywords
- kettle
- water
- fracturing
- soluble
- opening
- 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
Images
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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Removal Of Floating Material (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a self-suspending proppant for clear water fracturing and a preparation method thereof, wherein the self-suspending proppant for clear water fracturing comprises core base material particles, and an adsorption permeation layer, an isolation layer and an anti-adhesion layer which are sequentially coated from the core base material particles to the outside; the substance of the adsorption and permeation layer partially permeates into the inner core base material and is partially adsorbed on the surface of the inner core base material. The substances permeating from the surface of the self-suspending proppant and the inside of the base core have the performance of quickly dissolving out and dissolving in clear water, and in the dissolving out and dissolving process, all components have synergistic effect to complete the procedures of swelling, crosslinking and sand mixing of the traditional fracturing working fluid, so that a sand mixing truck directly pumps the fracturing working fluid to a rock stratum fracture area by using the clear water, the fracturing construction is easier, the hydraulic fracturing operation is simplified, and the fracturing cost is reduced; high flow conductivity and pressure resistance are kept at the crack, the production efficiency of the oil-gas well is improved, and the method has a good application prospect.
Description
Technical Field
The invention belongs to the technical field of proppants for oil and gas exploitation, and particularly relates to a self-suspending proppant for clean water fracturing and a preparation method thereof.
Background
The exploitation of petroleum and natural gas usually requires the adoption of hydraulic fracturing technology, and the proppant is a key material for fracturing construction. The proppant is also called as petroleum fracturing proppant, when petroleum and natural gas deep well is exploited, after high closure pressure and low permeability deposit is subjected to fracturing treatment, the petroleum-containing rock stratum is cracked, oil and gas are collected from a channel formed by the crack, at the moment, fluid is required to be injected into the rock base layer to exceed the pressure of the fracture strength of the stratum, so that the rock stratum around the shaft is cracked, and a channel with high flow conductivity is formed. In order to keep the fracture formed after fracturing and ensure that oil and gas products can smoothly pass through, the mixture of the propping agent and the fracturing fluid is pumped into the bottom of the well at high pressure and high speed through hydraulic fracturing and enters the stratum to be filled in the cracks of the rock stratum, and a good flow guide channel is formed by utilizing the pressure resistance of the propping agent, so that the effect of supporting the cracks not to be closed due to stress release is achieved, high flow guide capacity is kept, oil and gas are smooth, and the yield is increased.
In traditional fracturing, a propping agent is easy to settle and carry in a fracturing fluid, a target area in a fracture of a rock stratum is easy to accumulate, the sand carrying performance of a fracturing fluid system is improved by adopting a method for improving the viscosity of the fracturing fluid, the viscosity of the fracturing fluid is too high, the fracturing fluid cannot enter a low-permeability layer, and the construction effect is influenced.
Disclosure of Invention
The self-suspending proppant for the clear water fracturing has the characteristic of completing liquid preparation, crosslinking and sand mulling at one time, is convenient for clear water pumping, and can keep high flow conductivity at the crack.
In a first aspect, the invention provides a self-suspending proppant for clear water fracturing, which comprises core base material particles, and an adsorption permeation layer, an isolation layer and an anti-adhesion layer which are sequentially coated from the core base material particles to the outside; the substance of the adsorption and permeation layer partially permeates into the inner core base material and is partially adsorbed on the surface of the inner core base material.
The dissolution of the anti-adhesion layer substance is interfered by the substance of the adsorption permeation layer; the adsorption permeation layer and the anti-adhesion layer are separated by the isolation layer, and after the anti-adhesion layer substance is dissolved, the adsorption layer substance is dissolved out again to react with the solution of the anti-adhesion layer substance, so that the technical requirements of field application can be completely met, and the effect is better. In addition, the reaction of the adsorption permeation layer substance and the anti-adhesion layer substance needs a gradual process from a small amount of contact to the whole contact reaction, otherwise, the reaction rate is too high, so that the product strength is low; in the invention, the penetrating substance of the adsorption layer exists in the inner part and on the surface of the inner core base material particle simultaneously, and a gradual process is generated when the penetrating substance is dissolved, so that the requirement that the penetrating substance is in contact reaction with the anti-blocking layer substance from a small amount to all of the contact reaction conditions is met.
Preferably, the inner core base material particles are ceramsite. More preferably, the ceramsite is general ceramsite or porous ceramsite meeting the technical requirements of hydraulic fracturing.
Preferably, the osmotic absorbent layer comprises one or more water-soluble viscoelastic surfactants.
Preferably, the water-soluble viscoelastic surfactant is one or more of cetyl trimethyl ammonium salicylate, cetyl pyridine halide, eicosyl methyl dihydroxyethyl ammonium chloride, dodecyl tributyl ammonium bromide, dihydroxyethyl dodecylamine, tetradecyl dimethyl ammonium chloride, octadecylamidopropyl betaine, erucamide hydroxypropyl betaine, oleamidopropyl betaine, cocamidopropyl betaine, dioctadecyl dimethyl ammonium chloride and dioctadecyl tetraol ethyl dibromoethylenediamine.
Preferably, the barrier layer comprises one or more water-soluble film-forming resins.
Preferably, the water-soluble film-forming resin is one or more of water-soluble modified oil resin, water-soluble modified polybutadiene resin, water-soluble epoxy resin, water-soluble phenol resin, water-soluble amino resin, water-soluble polyester resin, water-soluble phenolic resin, water-soluble acrylic resin, water-soluble polyurethane resin, water-soluble organic silicon resin and water-soluble organic fluorine resin.
Preferably, the antiblocking layer comprises one or more organic or inorganic salts.
Preferably, the organic salt or inorganic salt is one or more of calcium chloride, magnesium chloride, potassium chloride, sodium chloride, aluminum chloride, sodium salicylate, potassium salicylate, sodium citrate, potassium citrate, lithium citrate, sodium formate, potassium formate, lithium formate, calcium formate, sodium sulfate, potassium sulfate, lithium sulfate, calcium bromide, potassium bromide, sodium bromide, lithium bromide, potassium iodide, sodium iodide, lithium iodide, sodium acetate, potassium acetate, lithium acetate, sodium salicylate, potassium salicylate, and lithium salicylate.
Preferably, the mass of the core base material particles is 92.5-99% of the total mass; the mass of the adsorption and permeation layer is 0.3-3% of the total mass; the mass of the isolation layer is 0.15-3% of the total mass; the mass of the anti-adhesion layer is 0.5-2% of the total mass.
In a second aspect, the invention also provides a preparation method of the self-suspending proppant for hydraulic fracturing, which comprises the following steps:
(1) putting the kernel base material particles into a stirring kettle, starting stirring, and heating to 35 ℃;
(2) adding the raw material solution of the permeation and adsorption layer into a core base material of a stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, and recovering the solvent;
(3) opening the reaction kettle mouth after the solvent is completely discharged, continuously stirring, maintaining the temperature in the kettle, adding the raw material solution of the isolation layer, sealing the kettle mouth, vacuumizing, and recovering the solvent;
(4) and (3) opening the opening of the reaction kettle after the solvent is completely discharged, continuously stirring, maintaining the temperature in the kettle, adding the anti-adhesion layer raw material powder, closing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, and discharging the material to obtain the finished product.
The invention has the advantages and positive effects that: the self-suspending proppant for the clear water fracturing has the characteristics that substances permeating on the surface and inside the basal core of the self-suspending proppant have the performance of being quickly dissolved out and dissolved in clear water, all components have synergistic effect in the dissolution and dissolution process to complete the procedures of swelling, crosslinking and sand mixing of the traditional fracturing working fluid, the self-suspending proppant has the characteristic of being prepared at one time, can be in a suspending state in water and is convenient for pumping clear water, the proppant can be pumped to a stratum fracture area by using the clear water, the damage to fracturing equipment is reduced, the fracturing construction is easier, the service life of the fracturing equipment is prolonged, the hydraulic fracturing operation is simplified, and the fracturing cost is reduced; the viscosity of the fracturing fluid can be increased by utilizing the characteristics of the fracturing fluid, the suspension capacity of the fracturing fluid in water is improved, the high flow conductivity is kept at the fracture, the pressure resistance is high in the fracture, the fracture is kept not to be closed, a good flow guide channel is formed, and the production efficiency of an oil-gas well is improved; the material has good chemical corrosion resistance of the stratum, does not change the performance due to the chemical action of the stratum, reduces the damage to the environment, improves the hydraulic fracturing performance, is a high-performance fracturing material, and has good application prospect.
The self-suspending proppant for the clear water fracturing is suitable for the clear water fracturing; the stable suspension state can be achieved, the settling time is long, the fracturing can be performed by using clear water, the abrasion to fracturing equipment is reduced, and the accumulation is not easy to generate in a rock stratum target area; the viscosity of the fracturing fluid is improved without using a large amount of organic materials, the damage to the stratum environment is small, the compressive strength is high, and the good flow conductivity can be kept under the high closing pressure of a deeper oil-gas well, so that the fracturing cost is greatly reduced, and the production efficiency of oil gas is improved.
The invention provides a preparation method of a self-suspending proppant for clear water fracturing, which comprises the steps of putting core base material particles into a stirring kettle according to a fixed proportion, starting stirring, heating to 35 ℃, sequentially and respectively adding a penetration adsorption layer raw material solution, an isolation layer raw material solution and anti-adhesion layer raw material powder in the corresponding proportion into a reaction kettle, maintaining the temperature, stirring, stopping stirring, and finishing the reaction to obtain the self-suspending proppant for clear water fracturing. The preparation method has the advantages of simple process, convenient operation, convenient raw material acquisition, controllable process parameters and suitability for large-scale industrial production.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be described in further detail below.
Drawings
FIG. 1 is a rheological curve of a self-suspending proppant of 20% sand ratio as provided in example 1 of the present invention;
FIG. 2 is a rheological curve of a self-suspending proppant of 15% sand ratio as provided by example 2 of the present invention;
FIG. 3 is a rheological curve for a self-suspending proppant of 30% sand ratio as provided by example 3 of the present invention;
FIG. 4 is a rheological curve of a self-suspending proppant 25% sand ratio provided by example 4 of the present invention;
FIG. 5 is a rheological curve for a self-suspending proppant of 35% sand ratio as provided by example 5 of the present invention;
FIG. 6 is a rheological curve of a self-suspending proppant of 15% sand ratio as provided by example 6 of the present invention;
FIG. 7 is a rheological curve of 10% sand ratio for self-suspending proppant provided in example 7 of the present invention;
FIG. 8 is a rheological curve for a self-suspending proppant 50% sand ratio as provided by example 8 of the present invention;
fig. 9 is a schematic structural view of a self-suspending proppant provided by the present invention.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following examples are illustrated in detail as follows:
example 1
Putting 1600kg of 20/40 MW ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 5kg of oleamide propyl betaine solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, closing the kettle opening, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 2.5kg of water-soluble phenolic resin solution, closing the kettle opening, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 8kg of sodium sulfate powder, closing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, discharging the material, and obtaining the self-suspending proppant for fracturing by clear water.
The self-suspending proppant provided in this example was tested at 20% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at a corresponding temperature and shear rate of 170 reverse seconds, to produce a rheological curve as shown in fig. 1. As can be seen from fig. 1, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 2
1600kg of 20/40 of the mixed powder, putting an LW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 25kg of dioctadecyl dimethyl ammonium chloride solution and 25kg of dioctadecyl tetraol ethyl dibromo ethyl diammonium into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 50kg of water-soluble epoxy resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 30kg of potassium sodium chloride powder, sealing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, and discharging the materials to obtain the self-suspending proppant for clear water fracturing.
The self-suspending proppant provided in this example was tested at 15% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 2. As can be seen from fig. 2, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 3
Putting 1600kg of 40/70 LW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 10kg of cocamidopropyl betaine solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 3kg of water-soluble organic silicon resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 12kg of calcium sodium chloride powder, sealing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, discharging the material, and obtaining the self-suspending proppant for clear water fracturing.
The self-suspending proppant provided in this example was tested at 30% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at a corresponding temperature and shear rate of 170 reverse seconds, to produce a rheological curve as shown in fig. 3. As can be seen from fig. 3, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 4
1600kg of 40/70 of the mixed powder, putting MW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 5kg of dihydroxyethyl dodecylamine solution and 15kg of eicosylmethyl dihydroxyethyl ammonium chloride solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 5kg of water-soluble polyurethane resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, discharging all the solvent, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 20kg of sodium salicylate powder, sealing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, discharging the materials, and obtaining the self-suspending proppant for clear water fracturing.
The self-suspending proppant provided in this example was tested at 25% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 4. As can be seen from fig. 4, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 5
1600kg of 30/50 of the mixed powder, putting MW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 30kg of hexadecyl trimethyl salicylamine solution into the ceramsite proppant in the stirring kettle, continuing stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, recovering the solvent, after the solvent is completely discharged, opening the reaction kettle opening, continuing stirring, maintaining the temperature in the kettle, adding 2.0kg of water-soluble acrylic resin solution and 1.5kg of water-soluble organic silicon resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, after the solvent is completely discharged, opening the reaction kettle opening, continuing stirring, maintaining the temperature in the kettle, adding 25kg of potassium chloride powder, sealing the kettle opening, continuing stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuing stirring for 10 minutes, stopping stirring, and discharging the material to obtain the self-suspending proppant for clear water fracturing.
The self-suspending proppant provided in this example was tested at 35% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 5. As can be seen from fig. 5, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 6
1600kg of 30/50 of the mixed powder, putting the LW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 40kg of octadecanamide propyl betaine solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing a kettle opening, vacuumizing, recovering the solvent, after the solvent is completely discharged, opening a reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 2kg of water-soluble organic fluororesin solution and 2kg of water-soluble alcohol phenol resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, after the solvent is completely discharged, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 5kg of sodium acetate powder and 9kg of potassium formate powder, sealing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, and discharging the materials to obtain the self-suspending proppant for clear water fracturing.
The self-suspending proppant provided in this example was tested at 15% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 6. As can be seen from fig. 6, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 7
Putting 1600kg of 70/140 MW ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 20kg of dodecyl tributyl ammonium bromide solution and 15kg of tetradecyl dimethyl amine chloride solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 2.5kg of water-soluble amino resin solution and 2.5kg of water-soluble modified polybutadiene resin solution, sealing the kettle opening, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle opening, continuously stirring, maintaining the temperature in the kettle, adding 8kg of potassium iodide powder and 7kg of magnesium chloride powder, sealing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, discharging the materials, thus obtaining the self-suspending proppant for the hydraulic fracturing.
The self-suspending proppant provided in this example was tested at 10% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 7. As can be seen from fig. 7, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
Example 8
Putting 1600kg of 70/140 LW type ceramsite proppant into a stirring kettle, starting stirring, heating to 35 ℃, adding 17.5kg of erucamide hydroxypropyl betaine solution and 13kg of hexadecyl pyridine halide solution into the ceramsite proppant in the stirring kettle, continuously stirring, maintaining the temperature in the kettle, closing the kettle mouth, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle mouth, continuously stirring, maintaining the temperature in the kettle, adding 1.5kg of water-soluble modified oil resin solution and 3.5kg of water-soluble polyester resin solution, closing the kettle mouth, vacuumizing, recovering the solvent, discharging the solvent completely, opening the reaction kettle mouth, continuously stirring, maintaining the temperature in the kettle, adding 10kg of calcium bromide powder and 8kg of lithium citrate powder, closing the kettle mouth, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, discharging the material, thus obtaining the self-suspending proppant for the hydraulic fracturing.
The self-suspending proppant provided in this example was tested at 50% sand (by volume) using a controlled stress rheometer, HAAKE-RS 600, at corresponding temperatures and shear rates of 170 reverse seconds, to produce a rheological curve as shown in fig. 8. As can be seen from fig. 8, the product obtained in this embodiment completely meets the quality standards required by hydraulic fracturing operations in the petroleum industry.
As shown in fig. 9, the products obtained in examples 1 to 8 of the present invention each have a 4-layer structure, which comprises, in order from the inside to the outside, an inner core base material pellet 1, an adsorption permeation layer 2 which permeates into the inner core base material pellet 1 and is adsorbed on the surface of the inner core base material pellet 1, a separation layer 3, and an anti-blocking layer 4. The adsorption permeation layer and the anti-adhesion layer are separated by the isolation layer, and after the anti-adhesion layer substance is dissolved, the adsorption layer substance is dissolved out again to react with the solution of the anti-adhesion layer substance, so that the effect is better. The absorbent layer penetrating substance exists in the inner part and on the surface of the core base material particle simultaneously, and when the absorbent layer penetrating substance is dissolved, a gradual process is generated, and the requirement that the contact reaction condition of the absorbent layer penetrating substance is met from a small amount to the whole contact reaction condition is met.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (3)
1. A self-suspending proppant for clear water fracturing is characterized by comprising inner core base material particles, and an adsorption permeation layer, an isolation layer and an anti-adhesion layer which are sequentially coated from the inner core base material particles to the outside; the adsorption permeable layer material partially permeates into the inner core base material and is partially adsorbed on the surface of the inner core base material;
the mass of the inner core base material particles is 92.5-99% of the total mass;
the mass of the adsorption and permeation layer is 0.3-3% of the total mass, and the adsorption and permeation layer is formed by compounding one or more of the following components: cetyl trimethyl salicylamine, eicosylmethyl dihydroxyethyl ammonium chloride, dodecyl tributyl ammonium bromide, dihydroxyethyl dodecylamine, tetradecyl dimethyl ammonium chloride, octadecylamidopropyl betaine, erucamide hydroxypropyl betaine, oleamidopropyl betaine, cocamidopropyl betaine, dioctadecyl dimethyl ammonium chloride, dioctadecyl tetraol ethyl dibromoethylenediamine;
the isolation layer is 0.15-3% of the total mass, and the isolation layer is formed by compounding one or more water-soluble film-forming resins: the water-soluble film-forming resin is water-soluble modified oil resin, water-soluble modified polybutadiene resin, water-soluble epoxy resin, water-soluble alcohol phenol resin, water-soluble amino resin, water-soluble polyester resin, water-soluble phenolic resin, water-soluble acrylic resin, water-soluble polyurethane resin, water-soluble organic silicon resin and water-soluble organic fluororesin;
the mass of the anti-adhesion layer is 0.5-2% of the total mass, and the anti-adhesion layer is formed by compounding one or more of the following components: sodium sulfate powder, potassium chloride powder, calcium chloride powder, sodium acetate powder, potassium formate powder, potassium iodide powder, magnesium chloride powder, calcium bromide powder, and lithium citrate powder.
2. The self-suspending proppant for hydraulic fracturing as claimed in claim 1, wherein the core base particles are ceramsite.
3. A method of making a self-suspending proppant for hydraulic fracturing as claimed in any one of claims 1-2, comprising the steps of:
(1) putting the kernel base material particles into a stirring kettle, starting stirring, and heating to 35 ℃;
(2) adding the raw material solution of the permeation and adsorption layer into a core base material of a stirring kettle, continuously stirring, maintaining the temperature in the kettle, sealing the kettle opening, vacuumizing, and recovering the solvent;
(3) opening the reaction kettle mouth after the solvent is completely discharged, continuously stirring, maintaining the temperature in the kettle, adding the raw material solution of the isolation layer, sealing the kettle mouth, vacuumizing, and recovering the solvent;
(4) and (3) opening the opening of the reaction kettle after the solvent is completely discharged, continuously stirring, maintaining the temperature in the kettle, adding the anti-adhesion layer raw material powder, closing the kettle opening, continuously stirring for 10 minutes, opening the reaction kettle, naturally cooling, continuously stirring for 10 minutes, stopping stirring, and discharging the material to obtain the finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284936.5A CN108795404B (en) | 2017-04-27 | 2017-04-27 | Self-suspending proppant for clean water fracturing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284936.5A CN108795404B (en) | 2017-04-27 | 2017-04-27 | Self-suspending proppant for clean water fracturing and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108795404A CN108795404A (en) | 2018-11-13 |
| CN108795404B true CN108795404B (en) | 2021-09-28 |
Family
ID=64069884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710284936.5A Active CN108795404B (en) | 2017-04-27 | 2017-04-27 | Self-suspending proppant for clean water fracturing and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108795404B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174244B (en) * | 2021-05-13 | 2022-10-14 | 北京昆仑隆源石油开采技术有限公司 | Tectorial membrane proppant and preparation method thereof |
| CN114891492B (en) * | 2022-05-24 | 2023-10-27 | 中国地质科学院勘探技术研究所 | Low-temperature self-suspension curing sand and preparation method thereof |
| CN116836071A (en) * | 2023-07-03 | 2023-10-03 | 广州市米粒科技信息有限公司 | Moisturizing surfactant, preparation method and moisturizing skin care liquid |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752173A (en) * | 2004-09-23 | 2006-03-29 | 中国石油天然气股份有限公司 | Composition of clean fracturing fluid additive and method for fracturing stratum |
| CN102031102A (en) * | 2010-11-18 | 2011-04-27 | 陕西延长石油(集团)有限责任公司研究院 | Preparation method and fracturing construction method of locally and continuously mixed clean fracturing fluid additive |
| CN102786923A (en) * | 2012-08-27 | 2012-11-21 | 山东鲲鹏新材料科技股份有限公司 | Method for modifying surface of ceramsites for fracturing |
| CN104379697A (en) * | 2012-04-19 | 2015-02-25 | 自悬浮支撑有限公司 | Self-suspending proppants for hydraulic fracturing |
| CN104893707A (en) * | 2015-05-22 | 2015-09-09 | 巩义市天祥耐材有限公司 | Self-suspension proppant for hydraulic fracturing and preparation method thereof |
| CN105505362A (en) * | 2015-12-02 | 2016-04-20 | 中国石油天然气股份有限公司 | Selective water-blocking oil-permeable sand-prevention proppant and preparation method and application thereof |
| CN105754580A (en) * | 2016-03-25 | 2016-07-13 | 山东诺尔生物科技有限公司 | Preparation method of low-friction self-suspending proppant for fracturing |
| CN106281298A (en) * | 2016-08-17 | 2017-01-04 | 常熟理工学院 | A kind of new method prepared from suspension haydite |
| CN106675548A (en) * | 2016-11-25 | 2017-05-17 | 北京昆仑隆源石油开采技术有限公司 | Self-suspension propping agent and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150267105A1 (en) * | 2014-03-18 | 2015-09-24 | Baker Hughes Incorporated | Anionic polysaccharide polymers for viscosified fluids |
-
2017
- 2017-04-27 CN CN201710284936.5A patent/CN108795404B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752173A (en) * | 2004-09-23 | 2006-03-29 | 中国石油天然气股份有限公司 | Composition of clean fracturing fluid additive and method for fracturing stratum |
| CN102031102A (en) * | 2010-11-18 | 2011-04-27 | 陕西延长石油(集团)有限责任公司研究院 | Preparation method and fracturing construction method of locally and continuously mixed clean fracturing fluid additive |
| CN104379697A (en) * | 2012-04-19 | 2015-02-25 | 自悬浮支撑有限公司 | Self-suspending proppants for hydraulic fracturing |
| CN102786923A (en) * | 2012-08-27 | 2012-11-21 | 山东鲲鹏新材料科技股份有限公司 | Method for modifying surface of ceramsites for fracturing |
| CN104893707A (en) * | 2015-05-22 | 2015-09-09 | 巩义市天祥耐材有限公司 | Self-suspension proppant for hydraulic fracturing and preparation method thereof |
| CN105505362A (en) * | 2015-12-02 | 2016-04-20 | 中国石油天然气股份有限公司 | Selective water-blocking oil-permeable sand-prevention proppant and preparation method and application thereof |
| CN105754580A (en) * | 2016-03-25 | 2016-07-13 | 山东诺尔生物科技有限公司 | Preparation method of low-friction self-suspending proppant for fracturing |
| CN106281298A (en) * | 2016-08-17 | 2017-01-04 | 常熟理工学院 | A kind of new method prepared from suspension haydite |
| CN106675548A (en) * | 2016-11-25 | 2017-05-17 | 北京昆仑隆源石油开采技术有限公司 | Self-suspension propping agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108795404A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108795404B (en) | Self-suspending proppant for clean water fracturing and preparation method thereof | |
| CN104893707B (en) | It is a kind of for riverfrac treatment from suspended prop and preparation method thereof | |
| CN102093874B (en) | Anion type nano compound clean fracturing fluid and preparation method thereof | |
| RU2524227C2 (en) | Underground formation treatment liquid additive and underground formation treatment method | |
| EP3212732B1 (en) | Polymer compositions | |
| US20120227967A1 (en) | Coated proppants | |
| CN102796507A (en) | Xanthan gum fracturing fluid, and preparation method and application thereof | |
| CN102329600B (en) | Nanoparticle sealing channeling water shutoff agent for oil wells | |
| CN105482795B (en) | Temporary plugging workover fluid suitable for fractured reservoir and preparation method thereof | |
| CN102757778A (en) | Fracturing fluid capable of resisting high salinity water quality | |
| AU2014399900A1 (en) | Surfactant formulations for reduced and delayed adsorption | |
| CN102926701B (en) | Continuous mixed type water plugging process method | |
| CN106318358A (en) | Green and environmentally friendly foam oil displacement system based on alkyl glycoside and preparation method and application thereof | |
| US20160369162A1 (en) | Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials | |
| CN107868660B (en) | Emulsified acid liquid for acidification of oil and gas reservoir and preparation method thereof | |
| CN102120929A (en) | Preparation method of gas-well water controlling agent | |
| CN114106810A (en) | Nano silicon dioxide, nano composite slickwater fracturing fluid, preparation method and application | |
| CN103911139B (en) | Capsule parcel solid hydrochloric acid preparation method | |
| RU2485301C1 (en) | Oil production method | |
| CA3023343A1 (en) | Methods of strengthening and consolidating subterranean formations with silicate-aluminum geopolymers | |
| CN106753294B (en) | A kind of leak-stopping cement mortar | |
| CN106010496A (en) | CO2 energy-increasing acid clean fracturing fluid and preparation method thereof | |
| CN108625836A (en) | A kind of highly aqueous well control water method for increasing of hyposmosis bottom water reservoir | |
| CN112961667A (en) | Slow-release tracing proppant and preparation method and application thereof | |
| CN103666440B (en) | A kind of acid solution instant dissolving viscosifier and its preparation method |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20181113 Assignee: ZHOUJI STRAIT ENERGY TECHNOLOGY Co.,Ltd. Assignor: Guan Zhongyuan Contract record no.: X2023990000780 Denomination of invention: A self suspending proppant for water fracturing and its preparation method Granted publication date: 20210928 License type: Exclusive License Record date: 20230825 |
|
| EE01 | Entry into force of recordation of patent licensing contract |