CN109652055B - Complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals and preparation method thereof - Google Patents
Complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals and preparation method thereof Download PDFInfo
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 51
- 239000003208 petroleum Substances 0.000 title claims abstract description 48
- 239000013078 crystal Substances 0.000 title claims abstract description 46
- 229910001753 sapphirine Inorganic materials 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004927 clay Substances 0.000 claims abstract description 44
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 36
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 36
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims description 65
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 44
- 229910052593 corundum Inorganic materials 0.000 claims description 42
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 42
- 238000010304 firing Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000000498 ball milling Methods 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 229910052681 coesite Inorganic materials 0.000 claims description 22
- 229910052906 cristobalite Inorganic materials 0.000 claims description 22
- 239000000377 silicon dioxide Substances 0.000 claims description 22
- 229910052682 stishovite Inorganic materials 0.000 claims description 22
- 229910052905 tridymite Inorganic materials 0.000 claims description 22
- 238000003723 Smelting Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 16
- 239000000395 magnesium oxide Substances 0.000 claims description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 14
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 14
- 229910000514 dolomite Inorganic materials 0.000 claims description 14
- 239000010459 dolomite Substances 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 229910052748 manganese Inorganic materials 0.000 claims description 14
- 239000011572 manganese Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- 239000010433 feldspar Substances 0.000 claims description 2
- 229940072033 potash Drugs 0.000 claims description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 2
- 235000015320 potassium carbonate Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000005245 sintering Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 14
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 12
- 239000012798 spherical particle Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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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
- C09K8/60—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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals and a preparation method thereof. The ceramsite oil fracturing propping agent contains sapphirine crystals with high hardness and excellent performance, and is prepared by mixing 40-60 parts of smelted high-carbon ferrochrome tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of composite mineralizer according to a certain proportion by weight, then preparing into ball materials, wherein the sintering temperature is 1300-1340 ℃, the heat preservation time is 15-30 minutes, and the product is naturally cooled to room temperature. The breaking rate of the manufactured finished product is 52MPa when the mesh is 30-50<8% apparent density<2.9g·cm‑3Bulk density of<1.6g·cm‑3. Has the advantages of high compressive strength, low density, low production cost and the like.
Description
Technical Field
The invention belongs to the technical field of petroleum proppants, and particularly relates to a complex-phase ceramsite petroleum fracturing propping agent containing sapphirine crystals and a preparation method thereof.
Background
The ceramsite fracturing propping agent is a particle prepared by sintering bauxite as a main raw material through various processing technologies. The using process is as follows: under the action of a high-pressure pump, the ceramsite fracturing propping agent and fracturing fluid are injected together to be adhered to the fracture rock wall of the stratum, the fracture is opened before the fracture is closed, and the fracture is converged into a high-flow-guide channel, so that stratum oil gas flows to the ground along the channel.
Petroleum proppants have been conventionally produced using high alumina materials (e.g., bauxite) as the primary raw material. Currently, with the decrease of bauxite resources, attempts to use various solid wastes including fly ash, coal gangue, and the like have been increasingly made. The tailings of the high-carbon ferrochrome smelting process is solid crystal which is left after the high-carbon ferrochrome is extracted by mixing chromium ores with different particle sizes and smelting at the high temperature of 1800-2000 ℃ in a submerged arc furnace, and the main phase of the solid crystal is magnesia-alumina spinel which is black granular. The slag of smelting high-carbon ferrochrome contains toxic Cr6+The large amount of stacked ions not only can harm the environment, but also can harm the health of people. Although a plurality of methods are proposed in the treatment of the tailings of the high-carbon ferrochrome alloy, the problems are not fundamentally solved. At present, the petroleum fracturing propping agent is not prepared by taking the tailings of the smelted high-carbon ferrochrome alloy as a main raw material, and the petroleum fracturing propping agent prepared by matching bauxite, clay and a composite mineralizer according to the chemical composition characteristics of the tailings of the smelted high-carbon ferrochrome alloy has very important significance for reducing the cost and protecting the environment.
Disclosure of Invention
The invention provides a complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals and a preparation method thereof, which solve the problem that the preparation process of the petroleum propping agent in the prior art is not beneficial to environmental protection.
The invention is realized by the following technical scheme:
the complex-phase ceramsite oil fracturing propping agent containing sapphirine crystals comprises, by weight, 40-60 parts of smelted high-carbon ferrochrome tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of a composite mineralizer, wherein the composite mineralizer is manganese ore powder, dolomite, potassium feldspar and iron ore powder, and the weight ratio of the composite mineralizer is 10-30: 20-40: 0-15: 10-20 by weight.
Smelting high-carbon ferrochrome tailings made of SiO2、Al2O3MgO and Cr2O3Composition of SiO236 to 40 percent of Al2O3The mass percentage of the component (A) is 24-28%, the mass percentage of MgO is 20-25%, and Cr2O3The mass percentage of the components is 6-8%, the ignition loss is less than 1%, and the sum of the percentages of the components is 100%.
Bauxite from SiO2And Al2O3Composition of SiO28 to 10 percent of Al2O3The weight percentage content of the components is 68-72 percent, the ignition loss is 12-14 percent, and the sum of the weight percentage of the components is 100 percent.
The clay is a plastic clay with strong binding force and is made of SiO2And Al2O3Composition of, wherein SiO 240 to 45 percent of Al2O3The weight percentage content of the components is 35-40%, the ignition loss is 12-14%, and the sum of the weight percentage of the components is 100%.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized by comprising the following specific steps of:
step 1: weighing 40-60 parts of smelting high-carbon ferrochrome alloy tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of composite mineralizer according to the weight ratio, and mixing;
step 2: ball-milling the mixed raw materials until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m;
and step 3: introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the fine powder along with the ball forming mill, and gradually agglomerating the fine powder into balls to finally obtain spherical proppant particles with compact texture and smooth surfaces;
and 4, step 4: and (4) firing and forming the proppant particles obtained in the step (3) to obtain the product.
In the step 4, the firing forming is specifically that the manufactured proppant particles are sent into a kiln, the temperature is increased to 1200 ℃ at the heating rate of 10-12 ℃/min in the air atmosphere, then the temperature is increased to 1300-1340 ℃ at the heating rate of 1-2 ℃/min, the temperature is kept for 15-30 min, and finally the product is obtained after natural cooling to the normal temperature.
In the step 1, the composite mineralizer is manganese ore powder, dolomite, potassium feldspar and iron ore powder according to the weight ratio of 10-30: 20-40: 0-15: 10-20 by weight.
Compared with the prior art, the invention has the following beneficial technical effects:
the multiphase ceramsite petroleum fracturing propping agent containing sapphirine crystals improves the components and the proportion of raw materials and auxiliary materials, particularly adds environmental pollutants-smelting high-carbon ferrochrome tailings, so that the production cost is reduced, and the addition of a proper amount of clay can effectively enhance the sphericity of a finished product and improve the backflow capacity of the finished product; meanwhile, the composite mineralizer is added, so that low-temperature sintering is facilitated, and the production cost is further reduced. The breaking rate of the manufactured finished product is 52MPa when the mesh is 30-50<8% apparent density<2.9g·cm-3Bulk density of<1.6g·cm-3. Has the advantages of high compressive strength, low density, low production cost and the like.
Drawings
FIG. 1 is a ceramsite XRD diffraction pattern in the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The complex-phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized by comprising, by weight, 40-60 parts of smelted high-carbon ferrochrome tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of a composite mineralizer, wherein the composite mineralizer is manganese ore powder, dolomite, potash feldspar and iron ore powder, and the weight ratio of the composite mineralizer is 10-30: 20-40: 0-15: 10-20 by weight.
Smelting high-carbon ferrochrome tailings made of SiO2、Al2O3MgO and Cr2O3Composition of SiO236 to 40 percent of Al2O3The mass percentage of the component (A) is 24-28%, the mass percentage of MgO is 20-25%, and Cr2O3The mass percentage of the components is 6-8%, the ignition loss is less than 1%, and the sum of the percentages of the components is 100%.
Bauxite from SiO2And Al2O3Composition of SiO28 to 10 percent of Al2O3The weight percentage content of the components is 68-72 percent, the ignition loss is 12-14 percent, and the sum of the weight percentage of the components is 100 percent.
The clay is a plastic clay with strong binding force and is made of SiO2And Al2O3Composition of, wherein SiO 240 to 45 percent of Al2O3The weight percentage content of the components is 35-40%, the ignition loss is 12-14%, and the sum of the weight percentage of the components is 100%.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized by comprising the following specific steps of:
step 1: weighing 40-60 parts of smelting high-carbon ferrochrome alloy tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of composite mineralizer according to the weight ratio, and mixing;
step 2: ball-milling the mixed raw materials until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m;
and step 3: introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the fine powder along with the ball forming mill, and gradually agglomerating the fine powder into balls to finally obtain spherical proppant particles with compact texture and smooth surfaces;
and 4, step 4: and (4) firing and forming the proppant particles obtained in the step (3) to obtain the product.
In the step 4, the firing forming is specifically that the manufactured proppant particles are sent into a kiln, the temperature is increased to 1200 ℃ at the heating rate of 10-12 ℃/min in the air atmosphere, then the temperature is increased to 1300-1340 ℃ at the heating rate of 1-2 ℃/min, the temperature is kept for 15-30 min, and finally the product is obtained after natural cooling to the normal temperature.
In the step 1, the composite mineralizer is manganese ore powder, dolomite, potassium feldspar and iron ore powder according to the weight ratio of 10-30: 20-40: 0-15: 10-20 by weight.
Example 1
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy236 percent by mass of Al2O3Is 24 percent, MgO is 20 percent, and Cr2O3The mass percentage of the catalyst is 6 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO2Is 10% by mass, Al2O3The weight percentage content of the catalyst is 72 percent, and the ignition loss is 14 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is245 percent by mass of Al2O3The mass percentage of the components is 40 percent, and the ignition loss is 14 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 30min, and finally naturally cooling to the normal temperature to obtain the product.
Example 2
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy237 percent by mass of Al2O325 percent by mass, 21 percent by mass of MgO and Cr2O3The mass percentage of the catalyst is 6 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO29% by mass of Al2O3The mass percentage of the components is 69 percent, and the ignition loss is 13 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 41% by mass, Al2O3The mass percentage of the components is 36 percent, and the ignition loss is 12 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in an air atmosphere, firstly raising the temperature to 1200 ℃ at a temperature rise rate of 12 ℃/min, then raising the temperature to 1320 ℃ at a temperature rise rate of 2 ℃/min, preserving the heat for 30min, and finally naturally cooling to the normal temperature to obtain the product.
Example 3
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy236 to 40 percent of Al2O326 percent by mass, 22 percent by mass of MgO and Cr2O3The mass percentage of the components is 8 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO29% by mass of Al2O3The mass percentage of the components is 68 percent, and the ignition loss is 14 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 44 percent by mass, Al2O3The mass percentage of the components is 36 percent, and the ignition loss is 13 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1340 ℃ at the temperature rise rate of 2 ℃/min, preserving the temperature for 30min, and finally naturally cooling to the normal temperature to obtain the product.
Example 4
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy238 percent by mass of Al2O327% by mass, 23% by mass of MgO, and Cr2O3The mass percentage of the components is 8 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO2Is 10% by mass, Al2O3The mass percentage of the components is 68 percent, and the ignition loss is 13 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 42 percent by mass, Al2O3The mass percentage of the components is 38 percent, and the ignition loss is 14 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 15min, and finally naturally cooling to the normal temperature to obtain the product.
Example 5
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy 240% by mass of Al2O326 percent by mass, 22 percent by mass of MgO and Cr2O3The mass percentage of the components is 8 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO29% by mass of Al2O3The mass percentage of the components is 70 percent, and the ignition loss is 13 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 42 percent by mass, Al2O3The mass percentage of the components is 37 percent, and the ignition loss is 12 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 20min, and finally naturally cooling to the normal temperature to obtain the product.
Example 6
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 40 parts of smelted high-carbon ferrochrome tailings, 53 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy239% by mass of Al2O327% by mass, 24% by mass of MgO, and Cr2O3The mass percentage of the components is 8 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO29% by mass of Al2O3The mass percentage of the components is 70 percent, and the ignition loss is 12 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 41% by mass, Al2O3The mass percentage of the components is 39 percent, and the ignition loss is 12 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 25min, and finally naturally cooling to the normal temperature to obtain the product.
Example 7
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 45 parts of smelted high-carbon ferrochrome tailings, 48 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy236 to 40 percent of Al2O326 percent by mass, 24 percent by mass of MgO and Cr2O3The mass percentage of the catalyst is 6 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO2Is 10% by mass, Al2O3The mass percentage of the components is 70 percent, and the ignition loss is 12 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is243% by mass of Al2O3The mass percentage of the components is 38 percent, and the ignition loss is 13 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 30min, and finally naturally cooling to the normal temperature to obtain the product.
Example 8
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 55 parts of smelted high-carbon ferrochrome tailings, 38 parts of bauxite, 2 parts of clay and 5 parts of a composite mineralizer according to the weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy239% by mass of Al2O327% by mass, 24% by mass of MgO, and Cr2O3The mass percentage of the catalyst is 6 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO28% by mass of Al2O3The mass percentage of the components is 71 percent, and the ignition loss is 13 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 42 percent by mass, Al2O3The mass percentage of the components is 37 percent, and the ignition loss is 13 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 30min, and finally naturally cooling to the normal temperature to obtain the product.
Example 9
The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized in that: the ceramsite petroleum fracturing propping agent contains sapphirine crystals with higher hardness and excellent performance, and is formed by firing 52 parts of smelted high-carbon ferrochrome tailings, 38 parts of bauxite, 2 parts of clay and 8 parts of composite mineralizer according to weight ratio, wherein the composite mineralizer is formed by mixing manganese ore powder, dolomite, potassium feldspar and iron ore powder according to a certain proportion.
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy238 percent by mass of Al2O326 percent by mass, 21 percent by mass of MgO and Cr2O3The mass percentage of the catalyst is 7 percent, and the ignition loss is less than 1 percent.
In the bauxite, SiO29% by mass of Al2O3The mass percentage of the components is 71 percent, and the ignition loss is 13 percent.
The clay is a plastic clay with strong bonding force, wherein SiO is2Is 42 percent by mass, Al2O3The mass percentage of the components is 38 percent, and the ignition loss is 12 percent.
The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals. Firstly, selecting and weighing all the components according to the proportion, mixing the components, mixing the processed raw materials according to the proportion, and then carrying out ball milling until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m; introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the ultrafine powder along with the ball forming mill to gradually agglomerate the ultrafine powder into balls, finally obtaining spherical particles with compact texture and smooth surface, and finally firing and forming. The firing forming means: and (3) sending the manufactured proppant particles into a kiln, in the air atmosphere, firstly raising the temperature to 1200 ℃ at the temperature rise rate of 12 ℃/min, then raising the temperature to 1300 ℃ at the temperature rise rate of 2 ℃/min, preserving the heat for 30min, and finally naturally cooling to the normal temperature to obtain the product.
In the invention, a large amount of smelting high-carbon ferrochrome tailings with high magnesium oxide content are used as main raw materials, a proper amount of bauxite, clay and composite mineralizer are matched, and the mixture is subjected to ball milling treatment, so that a sapphirine phase with strength and hardness higher than those of a mullite phase is introduced into a ceramic system, and the service performance index of the propping agent is achieved. In addition, the strength and the surface hardness of a proppant semi-finished product (raw material ball) can be effectively ensured under the cooperation of the proppant and the clay, and the raw material ball is favorable for preventing powder falling in the conveying and drying processes, and further preventing the surface from being rough and the sphericity from being reduced. Finally, the composite mineralizer with a proper proportion can effectively reduce the sintering temperature of the ceramsite petroleum fracturing propping agent and reduce the production cost.
Claims (5)
1. The complex-phase ceramsite petroleum fracturing propping agent containing sapphirine crystals is characterized by comprising, by weight, 40-60 parts of smelted high-carbon ferrochrome tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of a composite mineralizer, wherein the composite mineralizer is manganese ore powder, dolomite, potash feldspar and iron ore powder, and the weight ratio of the composite mineralizer is 10-30: 20-40: 0-15: 10-20 parts by weight;
SiO in the tailings of the smelting of the high-carbon ferrochrome alloy239% by mass of Al2O327% by mass, 24% by mass of MgO, and Cr2O3The mass percentage of the catalyst is 6 percent, and the ignition loss is less than 1 percent.
2. The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals as claimed in claim 1, wherein: in the bauxite, SiO28% by mass of Al2O3The mass percentage of the components is 71 percent, and the ignition loss is 13 percent.
3. The complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals as claimed in claim 1, wherein: the clay is a plastic clay with strong bonding force, wherein SiO is2Is 42 percent by mass, Al2O3The mass percentage of the components is 37 percent, and the ignition loss is 13 percent.
4. The preparation method of the multiphase ceramsite petroleum fracturing propping agent containing sapphirine crystals according to any one of claims 1 to 3 is characterized by comprising the following specific steps of:
step 1: weighing 40-60 parts of smelting high-carbon ferrochrome alloy tailings, 30-55 parts of bauxite, 1-3 parts of clay and 1-10 parts of composite mineralizer according to the weight ratio, and mixing;
step 2: ball-milling the mixed raw materials until the particle size D50 of the mixture reaches 3.4 mu m and the particle size is distributed in the range of 1-8 mu m;
and step 3: introducing the fine powder obtained after ball milling into a ball forming mill, spraying atomized water while rotating the fine powder along with the ball forming mill, and gradually agglomerating the fine powder into balls to finally obtain spherical proppant particles with compact texture and smooth surfaces;
and 4, step 4: and (4) firing and forming the proppant particles obtained in the step (3) to obtain the product.
5. The preparation method of the complex phase ceramsite petroleum fracturing propping agent containing sapphirine crystals as claimed in claim 4, is characterized in that: in the step 4, the firing and forming are specifically carried out by feeding the manufactured proppant particles into a kiln, raising the temperature to 1200 ℃ at a heating rate of 10-12 ℃/min in an air atmosphere, raising the temperature to 1300-1340 ℃ at a heating rate of 1-2 ℃/min, preserving the heat for 15-30 min, and naturally cooling to normal temperature to obtain the product.
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| CN116536039B (en) * | 2023-05-06 | 2024-06-25 | 郑州德赛尔陶粒有限公司 | Light acid-resistant high-strength fracturing propping agent and preparation method thereof |
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