CN113278410A - Method for preparing proppant production raw material by using oil-based rock debris - Google Patents
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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- 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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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
- C04B38/0025—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors starting from inorganic materials only, e.g. metal foam; Lanxide type products
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention discloses a method for preparing a proppant production raw material by using oil-based rock debris, which comprises the following steps: (1) determining and quantitatively characterizing components of the oil-based rock debris; (2) heavy component BaSO4Separating and collecting; (3) separating and collecting heavy component magnetic minerals; (4) supplementing framework materials; (5) adding a pore-forming agent; (6) and (5) ball milling and mixing. The invention can mix oilProcessing the base rock debris into a low-density proppant production raw material and recycling BaSO4The harmless treatment and resource utilization of the oil-based rock debris are realized, the risk of environmental pollution of the oil-based rock debris and the production cost of the proppant are reduced, and the production benefit and the popularization value are high.
Description
Technical Field
The invention relates to the technical field of solid waste treatment, in particular to a method for preparing a proppant production raw material by using oil-based rock debris.
Background
In order to maintain the stability of the well wall during drilling of the horizontal section of the shale gas well, an oil-based drilling fluid system is often adopted, and the generated rock debris is oil-based rock debris. According to statistics, the oil-based detritus production of shale gas single well in south China is about 130-300 m3More than 20X 10 oil-based rock debris is newly added every year4t. Heavy metals and hydrocarbon organic matters in the oil-based rock debris seriously affect the ecological environment. A series of methods such as an in-pit burying method, thermal desorption treatment, incineration treatment, biodegradation treatment, stratum reinjection and the like are derived around the degradation of hydrocarbon organic matters in the oil-based rock debris, the oil-based rock debris stacked in the treatment process occupies a large area of land, the treatment cost is high, the resource utilization degree is low, and the risk of secondary pollution exists.
On the other hand, proppants are in great demand as key materials for hydraulic fracturing, and the cost thereof is an important ring in the development cost of shale gas wells. The traditional ceramsite proppant takes high-grade bauxite or kaolin as a raw material. With the increasing difficulty of unconventional oil and gas development and the decreasing amount of high-grade bauxite resources, the oil and gas industry puts higher demands on the production cost and performance of the proppant, and how to provide a cost-reducing and efficiency-improving method for preparing a production raw material of the proppant by using oil-based rock debris is a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a method for preparing a low-density proppant production raw material by using oil-based rock debris, which can reduce the risk of environmental pollution caused by the oil-based rock debris and the production cost of the proppant, and realize harmless treatment and resource utilization of the oil-based rock debris.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for preparing a proppant production raw material by using oil-based rock debris comprises the following steps:
(1) oil-based cuttings composition determination and quantitative characterization
Determination of SiO in oil-based rock debris2Content, Al2O3Content, BaSO4Content, CaCO3Content, water content and oil content;
(2) heavy component BaSO4Separation and collection of
The oil-based rock debris is subjected to rotary vibration screening separation to separate BaSO4Recovering to obtain oil-based rock debris I for later use;
(3) separation and collection of heavy component magnetic minerals
Carrying out magnetic separation on the oil-based detritus residue I, and separating heavy component magnetic minerals to obtain an oil-based detritus residue II for later use;
(4) skeletal material supplement
According to SiO in step (1)2And Al2O3Content determination result, and supplementing framework material SiO in oil-based rock debris remainder II2And Al2O3Obtaining oil-based rock debris III for later use after the mass ratio is (0.8-1) to (1.2-1.5);
(5) pore former addition
According to CaCO in step (1)3Content determination result, pore-forming agent CaCO is supplemented in oil-based rock debris residual material III3Obtaining oil-based detritus excess material IV;
(6) ball milling mixing material
And carrying out wet ball milling on the oil-based rock debris IV to obtain the proppant production raw material.
The invention has the beneficial effects that: the method comprises the steps of processing the drilling solid waste oil-based rock debris into raw materials for producing the low-density proppant, realizing harmless treatment and resource utilization of the oil-based rock debris, carrying out quantitative characterization on the content of various components in the oil-based rock debris, providing data support for subsequent addition of a framework material and a pore-forming agent, and then recovering BaSO (barium SO) through a rotary vibration separation process4Removing heavy component magnetic minerals in the oil-based rock debris by a magnetic separation process, supplementing a framework material and a pore-forming agent into the oil-based rock debris according to a quantitative characterization result so as to ensure that a porous SiC dispersion-reinforced mullite-phase-containing proppant can be produced by using the raw material, the apparent density of the proppant can be reduced through a porous structure while high strength is formed, and finally, a mixed material of low-density proppants is obtained through ball milling and mixing.
Preferably, in step (1), the determination method is X-ray diffraction, distillation method and difference Soxhlet extraction method.
Preferably, in the step (2), the rotational vibration is performed by using a ternary rotational vibration sieve, wherein the adopted sieve is a hydrophilic sieve, and the mesh number of the sieve is 200-600 meshes.
Adopt above-mentioned technical scheme's beneficial effect: the screen is a primary-secondary net structure made of hydrophilic materials, and wet materials (oil-based rock debris) with different densities and particle sizes can be screened and separated through horizontal, vertical and inclined three-dimensional motions of the rotary vibrating screen and ball slapping in the primary-secondary net.
Preferably, the step (3) further comprises drying, and the specific operations are as follows: drying the oil-based rock debris I at the temperature of 150-180 ℃ for 1-2h, and then carrying out magnetic separation.
Preferably, in the step (3), the heavy magnetic mineral is a mineral containing Cr, Fe, Mn and Cu ions;
the times of the magnetic separation are 2-4 times.
Preferably, in the step (4), the framework material SiO2And Al2O3All the powders have the particle size of less than 0.0374 mm.
Preferably, in step (5), the pore-forming agent CaCO3Is powder with the grain diameter less than 0.0374 mm.
Preferably, in the step (6), the wet ball milling specifically comprises: adding alcohol into the oil-based rock debris IV, and ball-milling for 1-2h at the speed of 380-420 r/min.
Preferably, the volume ratio of the alcohol to the oil-based detritus remainder IV is (1-1.5): 1; wherein the concentration of the alcohol is more than or equal to 95 percent.
Adopt above-mentioned technical scheme's beneficial effect: ethanol is used as a dispersing agent for wet grinding, so that the materials are uniformly mixed, and can be ground and have uniform particle size.
Preferably, the low-density proppant produced in the step (6) comprises the following components in percentage by mass: oil 10-20%, SiO220％-30％、Al2O325.4％-38％、CaCO320-25 percent of clay mineral, 10-44 percent of clay mineral, and the balance of compounds of Mg and Fe elements and water.
According to the technical scheme, compared with the prior art, the invention discloses the method for preparing the production raw material of the proppant by using the oil-based rock debris, breaks through the oil-based rock debris treatment mode mainly aiming at removing the oil-based rock debris hydrocarbon organic matters, retains the hydrocarbon organic matters as the carbon source of the low-density proppant and fully utilizes SiO in the oil-based rock debris2、Al2O3、CaCO3Processing the components to obtain a low-density proppant production raw material and recycling BaSO4The production cost of the low-density propping agent is reduced, and the harmless treatment and resource utilization of the oil-based rock debris are realized; in addition, the raw materials in the invention are wide in source and easy to obtain, and the preparation method in the invention is simple, easy to operate and more suitable for large-scale industrial production.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The method for preparing the proppant production raw material by using the oil-based rock debris comprises the following steps:
(1) oil-based cuttings composition determination and quantitative characterization
Determination of SiO in oil-based rock debris by X-ray diffraction2Content, Al2O3Content, BaSO4Content, CaCO3Measuring the water content and the oil content in the oil-based rock debris by a distillation method and a Soxhlet extraction difference method;
(2) heavy component BaSO4Separation and collection of
Placing oil-based rock debris into a ternary rotary vibration sieve for wet material screening separation, and separating BaSO after rotary vibration for 30min4Recovering to obtain oil-based rock debris I for later use; wherein, the screen of the ternary rotary vibration screen is a hydrophilic screen, and the mesh number of the screen is 200 meshes;
(3) separation and collection of heavy component magnetic minerals
Putting the oil-based detritus residue I into an oven with the temperature of 150 ℃ for drying treatment for 2h, then putting the oil-based detritus residue I into a magnetic separator for magnetic separation of magnetic minerals for 2 times, and screening and separating heavy component magnetic minerals to obtain an oil-based detritus residue II for later use; wherein the magnetic mineral is a mineral containing Cr, Fe, Mn and Cu ions;
(4) skeletal material supplement
According to SiO in step (1)2、Al2O3Content determination result, and supplementing framework material SiO in oil-based rock debris remainder II2And Al2O3Until the mass ratio is 1:1.27, and then standby; wherein, the framework material SiO2And Al2O3Is powder with the diameter less than 0.0374 mm;
(5) pore former addition
According to CaCO in step (1)3Content determination result, namely adding a pore-forming agent CaCO into the oil-based rock debris treated in the step (4)3To a content of 20%; wherein, pore-forming agent CaCO3Is powder with the particle size less than 0.0374 mm.
(6) Ball milling mixing material
Putting the oil-based rock debris surplus material IV into a planetary ball mill, adding alcohol according to the volume ratio of the alcohol amount to the oil-based rock debris surplus material IV of 1:1 for wet ball milling, carrying out ball milling for 2 hours at the speed of 380r/min, and taking out to obtain a low-density proppant production raw material; wherein the concentration of the alcohol is more than or equal to 95 percent.
Example 2
The method for preparing the proppant production raw material by using the oil-based rock debris comprises the following steps:
(1) oil-based cuttings composition determination and quantitative characterization
Determination of SiO in oil-based rock debris by X-ray diffraction2Content, Al2O3Content, BaSO4Content, CaCO3Measuring the water content and the oil content in the oil-based rock debris by a distillation method and a Soxhlet extraction difference method; (2) heavy component BaSO4Separation and collection of
Placing oil-based rock debris into a ternary rotary vibration sieve for sieving and separating wet materials, and separating BaSO after rotary vibration for 45min4Recovering to obtain oil-based rock debris I for later use; wherein, the screen of the ternary rotary vibration screen is a hydrophilic screen with 400 meshes;
(3) separation and collection of heavy component magnetic minerals
Putting the oil-based detritus residue I into an oven with the temperature of 165 ℃ for drying treatment for 1.5h, then putting the oil-based detritus residue I into a magnetic separator for magnetic separation of magnetic minerals for 3 times, and screening and separating heavy component magnetic minerals to obtain an oil-based detritus residue II for later use; wherein the magnetic mineral is a mineral containing Cr, Fe, Mn and Cu ions;
(4) skeletal material supplement
According to SiO in step (1)2、Al2O3Content determination result, and supplementing framework material SiO in oil-based rock debris remainder II2And Al2O3Until the mass ratio is 1:1.27, and then standby; wherein, the framework material SiO2And Al2O3Powder less than 0.0374mm
(5) Pore former addition
According to CaCO in step (1)3Content determination result, namely adding a pore-forming agent CaCO into the oil-based rock debris treated in the step (4)3To a content of 23%; wherein, pore-forming agent CaCO3Is powder with the diameter less than 0.0374 mm;
(6) ball milling mixing material
Putting the oil-based rock debris surplus material IV into a planetary ball mill, adding alcohol according to the volume ratio of the alcohol amount to the oil-based rock debris surplus material IV of 1:1 for wet ball milling, carrying out ball milling for 1.5h at the speed of 400r/min, and taking out to obtain a low-density proppant production raw material; wherein the concentration of the alcohol is more than or equal to 95 percent.
Example 3
The method for preparing the proppant production raw material by using the oil-based rock debris comprises the following steps:
(1) oil-based cuttings composition determination and quantitative characterization
Determination of SiO in oil-based rock debris by X-ray diffraction2Content, Al2O3Content, BaSO4Content, CaCO3Measuring the water content and the oil content in the oil-based rock debris by a distillation method and a Soxhlet extraction difference method;
(2) heavy component BaSO4Separation and collection of
Placing oil-based rock debris into a ternary rotary vibration sieve for wet material screening separation, and separating BaSO after rotary vibration for 60min4Recovering to obtain oil-based rock debris I for later use; wherein, the screen of the ternary rotary vibration screen is a hydrophilic screen, and the mesh number of the screen is 600 meshes;
(3) separation and collection of heavy component magnetic minerals
Putting the oil-based detritus residue I into an oven with the temperature of 180 ℃ for drying treatment for 1h, then putting the oil-based detritus residue I into a magnetic separator for magnetic separation of magnetic minerals for 4 times, and screening and separating heavy component magnetic minerals to obtain an oil-based detritus residue II for later use; wherein the magnetic mineral is a mineral containing Cr, Fe, Mn and Cu ions;
(4) skeletal material supplement
According to SiO in step (1)2、Al2O3Content determination results in oil-based detritus residue IIMiddle-supplement framework material SiO2And Al2O3Until the mass ratio is 1:1.27, and then standby; wherein, the framework material SiO2And Al2O3Is powder with the diameter less than 0.0374 mm;
(5) pore former addition
According to CaCO in step (1)3Content determination result, namely adding a pore-forming agent CaCO into the oil-based rock debris treated in the step (4)3To a content of 25%; wherein, pore-forming agent CaCO3Powder less than 0.0374mm
(6) Ball milling mixing material
Putting the oil-based rock debris surplus material IV into a planetary ball mill, adding alcohol for wet ball milling according to the volume ratio of the alcohol amount to the oil-based rock debris surplus material IV of 1:1, carrying out ball milling for 1h at the speed of 420r/min, and taking out to obtain a low-density proppant production raw material; wherein the concentration of the alcohol is more than or equal to 95 percent.
Product content determination
The mass percentages of the components of the proppant production raw materials prepared in examples 1-3 were determined by X-ray diffraction and difference soxhlet extraction, and the test results are shown in table 1 below:
TABLE 1 proppant production raw materials prepared in examples 1-3, the compositions of which are in percent by mass
The raw material components of the control groups 1-3 for preparing the ceramsite proppant by using the waste material as the raw material are shown in the following table 2:
TABLE 2 raw material composition for preparing ceramsite proppant by comparison of groups 1-3
As can be seen from the data in the table, compared with the technical scheme in the prior art, the raw material effective components for producing the proppant are more comprehensive.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for preparing a proppant production raw material by using oil-based rock debris is characterized by comprising the following steps:
(1) oil-based cuttings composition determination and quantitative characterization
Determination of SiO in oil-based rock debris2Content, Al2O3Content, BaSO4Content, CaCO3Content, water content and oil content;
(2) heavy component BaSO4Separation and collection of
The oil-based rock debris is subjected to rotary vibration screening separation to separate BaSO4Recovering to obtain oil-based rock debris I for later use;
(3) separation and collection of heavy component magnetic minerals
Carrying out magnetic separation on the oil-based detritus residue I, and separating heavy component magnetic minerals to obtain an oil-based detritus residue II for later use;
(4) skeletal material supplement
According to SiO in step (1)2And Al2O3Content determination result, and supplementing framework material SiO in oil-based rock debris remainder II2And Al2O3Obtaining oil-based rock debris III for later use after the mass ratio is (0.8-1) to (1.2-1.5);
(5) pore former addition
According to CaCO in step (1)3Content determination result, pore-forming agent CaCO is supplemented in oil-based rock debris residual material III3Obtaining oil-based detritus excess material IV;
(6) ball milling mixing material
And carrying out wet ball milling on the oil-based rock debris IV to obtain the proppant production raw material.
2. The method for preparing a raw material for producing proppant by using oil-based rock debris as claimed in claim 1, wherein in the step (1), the determination method is X-ray diffraction, distillation and difference Soxhlet extraction.
3. The method for preparing the raw material for producing the proppant by using the oil-based rock debris as claimed in claim 1, wherein in the step (2), the rotational vibration is performed by using a ternary rotational vibration sieve, wherein the adopted sieve is a hydrophilic sieve, and the sieve mesh number is 200-600 meshes.
4. The method for preparing the raw material for producing the proppant by using the oil-based rock debris as claimed in claim 1, wherein the step (3) further comprises drying, and the specific operations are as follows: drying the oil-based rock debris I at the temperature of 150-180 ℃ for 1-2h, and then carrying out magnetic separation.
5. The method for preparing the raw material for producing the proppant by using the oil-based rock debris as claimed in claim 1, wherein in the step (3), the heavy magnetic mineral is a mineral containing Cr, Fe, Mn and Cu ions;
the times of the magnetic separation are 2-4 times.
6. The method for preparing raw materials for producing proppant by using oil-based rock debris as claimed in claim 1, wherein in the step (4), the framework materialSiO2And Al2O3All the powders have the particle size of less than 0.0374 mm.
7. The method for preparing a proppant production raw material by using oil-based rock debris as claimed in claim 1, wherein in the step (5), the pore-forming agent CaCO3Is powder with the grain diameter less than 0.0374 mm.
8. The method for preparing the raw material for producing the proppant by using the oil-based rock debris as claimed in claim 1, wherein in the step (6), the wet ball milling is carried out by the following specific operations: adding alcohol into the oil-based detritus residue IV, and ball-milling for 1-2h at the speed of 380-420 r/min.
9. The method for preparing the raw material for producing the propping agent by using the oil-based rock debris as claimed in claim 8, wherein the volume ratio of the alcohol to the oil-based rock debris IV is (1-1.5): 1.
10. The method for preparing the proppant production raw material by using the oil-based rock debris as claimed in claim 1, wherein the low-density proppant production raw material in the step (6) comprises the following components in percentage by mass: oil 10-20%, SiO220％-30％、Al2O325.4％-38％、CaCO320-25 percent of clay mineral, 10-44 percent of clay mineral, and the balance of Mg compound, Fe compound and water.
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Cited By (8)
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| CN114804844A (en) * | 2022-03-17 | 2022-07-29 | 河南龙德福新材料科技研究院有限公司 | Method for comprehensively utilizing water-based rock debris through SiC template method |
| CN115055486A (en) * | 2022-06-01 | 2022-09-16 | 四川君和环保股份有限公司 | Method and system for recycling barium sulfate from shale gas drilling oil sludge dry slag |
| CN116177882A (en) * | 2023-02-22 | 2023-05-30 | 四川君和环保股份有限公司 | Low-cost ceramsite propping agent and preparation method thereof |
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| CN116177881A (en) * | 2023-02-22 | 2023-05-30 | 四川君和环保股份有限公司 | Ultralow-density ceramsite fracturing propping agent and preparation method thereof |
| CN116177883A (en) * | 2023-02-22 | 2023-05-30 | 四川君和环保股份有限公司 | High-strength ceramsite fracturing propping agent and preparation method thereof |
| CN116177881B (en) * | 2023-02-22 | 2023-11-28 | 四川君和环保股份有限公司 | Ultralow-density ceramsite fracturing propping agent and preparation method thereof |
| CN116177882B (en) * | 2023-02-22 | 2023-11-28 | 四川君和环保股份有限公司 | Low-cost ceramsite propping agent and preparation method thereof |
| CN116177883B (en) * | 2023-02-22 | 2023-12-12 | 四川君和环保股份有限公司 | High-strength ceramsite fracturing propping agent and preparation method thereof |
| CN116177882A (en) * | 2023-02-22 | 2023-05-30 | 四川君和环保股份有限公司 | Low-cost ceramsite propping agent and preparation method thereof |
| CN117720902A (en) * | 2023-12-14 | 2024-03-19 | 四川君和环保股份有限公司 | Ultralow-acid-solubility propping agent prepared from high-barium dry slag and preparation method thereof |
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