CN109536158A - A kind of low-density ceramic proppant and preparation method thereof - Google Patents
A kind of low-density ceramic proppant and preparation method thereof Download PDFInfo
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- CN109536158A CN109536158A CN201710862659.1A CN201710862659A CN109536158A CN 109536158 A CN109536158 A CN 109536158A CN 201710862659 A CN201710862659 A CN 201710862659A CN 109536158 A CN109536158 A CN 109536158A
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- 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
Abstract
The invention discloses a kind of low-density ceramic proppant, preparation methods are as follows: (1) part haydite materials with high molecular polymer microballoon are mixed, it is spraying to soak, and it stands, balling-up of pelletizing；(2) haydite materials of surplus are added, continue to pelletize；(3) 300 DEG C are warming up to, be then sintered at 1300~1400 DEG C to get.High molecular polymer microballoon is prepared from the following raw materials: tasteless kerosene or white oil 20%~30%, emulsifier 3%~12%, acrylamide 5%~30%, acrylic acid 5%~30%, N, N- methene base bisacrylamide 3%~7%, initiator 0.01%~0.1%, surplus are water.Ceramsite propping agent of the invention, density is in 1.8~2.0g/cm3Average grain diameter 0.83mm, compressive resistance with higher (inside the hollow ball uniform pack haydite of rule, can be effectively reduced haydite density, its original compression strength is maintained to greatest extent), it can be used as fracture in oil and water wells and applied with proppant.
Description
Technical field
The present invention relates to a kind of low-density ceramic proppant and preparation method thereof, and as fracture in oil and water wells proppant
In application.
Background technique
Deep-seated oil, gas well are developed, yield is improved, fracturing technology is widely adopted.To ensure having for underground deep layer pressure-break
Effect struts, suitable proppant be it is necessary, it can increase the flow conductivity on stratum, improve the yield of oil or gas, be pressure break work
One key factor of skill application quality.Common fracturing propping agents domestic at present are quartz sand and haydite.Wherein quartz sand
Cheap, relative density is low, and convenient for construction pumping, but the intensity of quartz sand is low, sphericity is poor, percentage of damage is high, to drop
The low flow conductivity in crack, is not particularly well suited for the high deep-well of clossing pressure.For sintering ceramsite due to intensity height, sphericity is good,
For the fracturing propping agents that people preferentially select, it is constantly subjected to pay much attention to.
The density of conventional proppants is larger, easily settles to form whaleback near wellbore in pressure break pumping procedure, finally have
Effect supporting crack is shorter, and the oil-gas reservoir volume of communication is less, and to improving, oil well output is unfavorable.When proppant density is smaller, splitting
Laid in seam it is more uniform, effectively support seam it is longer.Therefore, reducing proppant density becomes the Main way of proppant development.
Super-low-density proppant refers to apparent density less than 2.0 at present, other performances meet the proppant of pressing crack construction requirement.
Two classes: inorganic material proppant, including hollow haydite, porous ceramic grain, hollow glass micro-ball etc. are broadly divided into, its advantage is that resistance to
Temperature, but intensity contrast solid support agent reduction is larger, limits application.Organic material proppant, including resin coating haydite and
High molecular polymer proppant, its advantage is that density is lower, but heat resisting and pressure resisting is inadequate, there is a small amount of application in shallow-layer pressure break.
Summary of the invention
For the above-mentioned prior art, the present invention provides a kind of low-density, high-strength ceramic proppant, the present invention also provides
Preparation method.
The present invention is achieved by the following technical solutions:
A kind of preparation method of low-density ceramic proppant, comprising the following steps:
(1) haydite materials and high molecular polymer microballoon of haydite materials total amount 78%~81% (preferably 79.5%) will be accounted for
The volume ratio of mixing, the haydite materials (referring to total amount) and high molecular polymer microballoon is 2.8~3.2:1, wherein being excellent with 3:1
Scheme is selected, is soaked by spraying in mixing, stands 10 hours after wetting, be placed in sugar coating machine balling-up of pelletizing, spherolite to be averaged later
After diameter reaches 0.78mm, drying 24 hours is taken out, semi-finished product are obtained；
(2) semi-finished product are placed in sugar coating machine, be added surplus haydite materials (the 19%~22% of haydite materials total amount,
In with 20.5% be optimal case), continue to pelletize (purpose is the high molecular polymer micro-spheres surface), it is to be averaged
After partial size reaches 0.83mm, drying 24 hours is taken out, precast ceramsite is obtained；
(3) precast ceramsite is preheated, is warming up to 300 DEG C ± 20 DEG C, heating rate control 20~30 DEG C/it is small
When, to ensure high molecular polymer slowly decomposition gasification, the hole left is the sphere of rule；After preheating, it is placed in sintering machine
Be sintered, 1300~1400 DEG C of sintering temperature to get.
The haydite materials refer to the general raw material of manufacture haydite, can be selected from bauxite, kaolin, industrial waste (such as red mud
Flyash, ceramic rod waste material etc.), preferred bauxite.
The high molecular polymer microballoon, partial size be 40~60 μm, 50 μm of average grain diameter, density 0.8g/cm3, be by
Made of the raw material of following weight percent: tasteless kerosene or white oil 20%~30%, emulsifier 3%~12%, acrylamide
5%~30%, acrylic acid 5%~30%, N, N- methene base bisacrylamide 3%~7%, initiator 0.01%~0.1% is remaining
Amount is water (preferably deionized water)；It is prepared by the following method to obtain:
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, strong stirring 30min, addition is drawn
Agent is sent out, is caused at 8 DEG C, fully reacting after 6h obtains polymer emulsion, is milky or translucent flowable liquids, polymer
Effective content 30%~40%；
The emulsifier is conven-tional adjuvants in the prior art, can be selected from alkyl phenol polyoxyethylene ether (TX, OP series), rouge
Fat alcohol polyoxyethylene ether (MOA series), isomery fatty alcohol polyoxyethylene ether, carboxylate fatty alcohol, carboxylate fatty amine, sulfate
Fatty alcohol, sulfate fatty amine, sulfonate fatty alcohol, any one or two or more combinations in sulfonate fatty amine；
The initiator is radical initiator in the prior art, can be selected from azo-initiator (hot initiator system, packet
Include: persulfate, water-soluble azo class), redox initiator (oxidation-reduction trigger system)；It may make up redox body
There are benzoyl peroxide/sucrose, tert-butyl hydroperoxide/rongalite, tert-butyl hydroperoxide/sodium pyrosulfite, peroxide in system
Change benzoyl/n,N-Dimethylaniline, ammonium persulfate/sodium hydrogensulfite, potassium peroxydisulfate/sodium hydrogensulfite, hydrogen peroxide/winestone
Acid, hydrogen peroxide/sodium formaldehyde sulfoxylate, ammonium persulfate/ferrous sulfate, hydrogen peroxide/sulfuric acid ferrous iron, benzoyl peroxide //N, N- diethyl
Base aniline, benzoyl peroxide/ferrous pyrophosphate, potassium peroxydisulfate/silver nitrate, persulfate/mercaptan, isopropyl benzene hydroperoxide/
Frerrous chloride, potassium peroxydisulfate/frerrous chloride, hydrogen peroxide/frerrous chloride, isopropyl benzene hydroperoxide/tetra- aziridines etc.；
Preferably, it is made of the raw material of following weight percent: tasteless kerosene or white oil 25%, emulsifier 5%~
8%, acrylamide 20%~30%, acrylic acid 5%~15%, N, N- methene base bisacrylamide 5%, initiator 0.01%~
0.1%, surplus is water；
It is furthermore preferred that being made of the raw material of following weight percent: tasteless kerosene or white oil 25%, emulsifier 6%,
Acrylamide 25%, acrylic acid 10%, N, N- methene base bisacrylamide 5%, initiator 0.01%~0.1%, surplus are to go
Ionized water；
Preferably, the strong stirring refers to and stirs at 2000r/min；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 3~4 times, at 40 DEG C after powdered
Drying is to get high molecular polymer microballoon is arrived, and 40~60 μm of particle diameter distribution, average grain diameter is 50 μm, density 0.8g/cm3, have
Certain elasticity, circularity sphericity are high.
The low-density high-strength ceramic granule propping agent being prepared using the above method, density is in 1.8~2.0g/cm3, average
Partial size 0.83mm, compressive resistance (resistance to compression 68MPa) with higher.
Low-density ceramic proppant of the invention can be used as fracture in oil and water wells and be applied with proppant.
Low-density ceramic proppant of the invention can be effectively inside the hollow ball uniform pack haydite of rule
Haydite density is reduced, maintains its original compression strength to greatest extent.
Detailed description of the invention
Fig. 1: porous ceramic grain electromicroscopic photograph.
Fig. 2: solid haydite stress analysis schematic diagram.
Fig. 3: inside is the haydite stress analysis schematic diagram of regular circle shapes hole.
Fig. 4: inside there is the haydite stress analysis schematic diagram of irregular holes.
Fig. 5: concentrated stress and spherical hole number relational graph.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Instrument involved in following embodiments, reagent, material etc. are unless otherwise noted existing in the prior art
Conventional instrument, reagent, material etc., can be obtained by regular commercial sources.Experimental method involved in following embodiments, inspection
Survey method etc. is unless otherwise noted existing routine experiment method in the prior art, detection method etc..
The development of 1 low-density ceramic proppant of embodiment
1, the reason of porous ceramic grain compressive resistance reduces:
The hole of porous ceramic grain is very irregular, and shape is varied, as shown in Figure 1, inside is easy to out in stress
Existing stress is concentrated, and is caused to be crushed, is thus caused chain reaction, significantly reduces compressive resistance.
Force analysis: for solid haydite in pressure-resistant 65MPa, internal stress is 27MPa or so, stress concentration does not occur,
As shown in Figure 2.When porous ceramic grain hole is regular circle shapes, pressure-resistant 65MPa, the stress that 75MPa occurs in inside is concentrated, and is such as schemed
Shown in 3.When haydite inner void is irregular, pressure-resistant 65MPa will appear the stress collection of 170MPa in inner void irregularity
In, it is broken so as to cause haydite, as shown in Figure 4.It can be seen that directly affecting haydite whether the hole rule of porous ceramic grain
Compression strength.
2, low-density high-strength haydite invention thinking
Invention thinking: inside the hollow ball uniform pack haydite of rule, can be effectively reduced haydite density, maximum
Its original compression strength of the maintenance of limit.By taking effective hollow volume accounts for the 1/3 of haydite total volume as an example, pressure-resistant 65MPa is carried out
Finite element analysis has to draw a conclusion, as shown in table 1, Fig. 5.
Table 1
By table 1, Fig. 5 it is found that the spherical hole of porous ceramic grain is more, radius is smaller, then the stress of the inside of porous ceramic grain
Concentrate it is smaller, so that the compressive resistance of porous ceramic grain is higher.
3, preparation method
Using bauxite as raw material (bulk density 1.7g/cm3), the solid haydite of the partial size 0.83mm of conventional method preparation,
Its apparent density 2.7g/cm3, pressure-resistant 68MPa；As a comparison, high molecular polymer microballoon is filler, system using bauxite as raw material
It is standby with the low-density ceramsite of partial size, identical compression strength, apparent density is down to 1.85g/cm3。
Steps are as follows:
(1) high molecular polymer microballoon: raw material composition is prepared are as follows: white oil 25%, emulsifier 6%, acrylamide 25%, third
Olefin(e) acid 10%, N, N- methene base bisacrylamide 5%, initiator 0.05%, surplus is deionized water；
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, 2000r/min strong stirring
Initiator is added in 30min, causes at 8 DEG C, and fully reacting after 6h obtains polymer emulsion；
The emulsifier is emulsifier op-10；
The initiator is ammonium persulfate/sodium hydrogensulfite；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 4 times, at 40 DEG C of bakings after powdered
It does to get high molecular polymer microballoon is arrived, 40~60 μm of particle diameter distribution, average grain diameter is 50 μm, density 0.8g/cm3, there is one
Fixed elasticity, circularity sphericity are high.
(2) calculate the dosage of microballoon: compared with solid haydite, density reduces 1/3 (by 2.7g/cm3It is reduced to 1.85g/
cm3), then (bauxite bulk density is 1.7g/cm to haydite materials3) and polymer microballoon (density 0.8g/cm3) volume ratio be
3:1, reduced mass ratio are as follows: (explanation: bauxite needs to grind could carefully use 6.38:1 very much, and bulk density is after grinding
1.7g/cm3, the density of bauxite ore is very high).
Inner integrated stress can be found from Fig. 5 and is up to 57MPa or so, less than the broken pressure break of itself.
According to reduced density, then different raw materials will lead to the matter of different raw material and microballoon because density is different
Amount ratio.
(3) haydite is prepared:
1. the haydite materials for accounting for haydite materials total amount 79.5% are mixed with high molecular polymer microballoon, it is sprayed in mixing
Wetting, stands 10 hours after wetting, is placed in sugar coating machine balling-up of pelletizing later, after ball average grain diameter reaches 0.78mm, takes out
It is 24 hours dry, obtain semi-finished product；
2. semi-finished product are placed in sugar coating machine, be added remaining haydite materials continue granulation (purpose is the macromolecule surface
Polymer microballoon cladding is got up), after partial size to be averaged reaches 0.83mm, drying 24 hours is taken out, precast ceramsite is obtained；
3. preheating to precast ceramsite, 300 DEG C are warming up to, heating rate is controlled at 25 DEG C/h, to ensure high score
Slowly decomposition gasification, the hole left are the sphere of rule to sub- polymer；After preheating, merging sintering machine is sintered, and is sintered
1350 DEG C of temperature to get.
Embodiment 2 prepares low-density ceramic proppant
Steps are as follows:
(1) high molecular polymer microballoon: raw material composition is prepared are as follows: white oil 25%, emulsifier 5%, acrylamide 30%, third
Olefin(e) acid 5%, N, N- methene base bisacrylamide 5%, initiator 0.1%, surplus is deionized water；
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, 2000r/min strong stirring
Initiator is added in 30min, causes at 8 DEG C, and fully reacting after 6h obtains polymer emulsion；
The emulsifier is isomery fatty alcohol polyoxyethylene ether；
The initiator is that hydrogen peroxide/sulfuric acid is ferrous；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 4 times, at 40 DEG C of bakings after powdered
It does to get high molecular polymer microballoon is arrived.
(2) calculate the dosage of microballoon: the volume ratio of haydite materials (bauxite) and polymer microballoon is 3:1.
(3) haydite is prepared:
1. the haydite materials for accounting for haydite materials total amount 80% are mixed with high molecular polymer microballoon, moisten by spraying in mixing
It is wet, 10 hours are stood after wetting, is placed in sugar coating machine balling-up of pelletizing later, after ball average grain diameter reaches 0.78mm, is taken out dry
Dry 24 hours, obtain semi-finished product；
2. semi-finished product are placed in sugar coating machine, remaining haydite materials are added and continue to pelletize, partial size to be averaged reaches 0.83mm
Afterwards, drying 24 hours is taken out, precast ceramsite is obtained；
3. preheating to precast ceramsite, 300 DEG C are warming up to, heating rate is controlled at 25 DEG C/h, to ensure high score
Slowly decomposition gasification, the hole left are the sphere of rule to sub- polymer；After preheating, merging sintering machine is sintered, and is sintered
1350 DEG C of temperature to get.
Embodiment 3 prepares low-density ceramic proppant
Steps are as follows:
(1) high molecular polymer microballoon: raw material composition are as follows: tasteless kerosene 25%, emulsifier 8%, acrylamide is prepared
20%, acrylic acid 15%, N, N- methene base bisacrylamide 5%, initiator 0.02%, surplus is deionized water；
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, 2000r/min strong stirring
Initiator is added in 30min, causes at 8 DEG C, and fully reacting after 6h obtains polymer emulsion；
The emulsifier is carboxylate fatty alcohol；
The initiator is potassium peroxydisulfate/frerrous chloride；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 4 times, at 40 DEG C of bakings after powdered
It does to get high molecular polymer microballoon is arrived.
(2) calculate the dosage of microballoon: the volume ratio of haydite materials (bauxite) and polymer microballoon is 3:1.
(3) haydite is prepared:
1. the haydite materials for accounting for haydite materials total amount 78% are mixed with high molecular polymer microballoon, moisten by spraying in mixing
It is wet, 10 hours are stood after wetting, is placed in sugar coating machine balling-up of pelletizing later, after ball average grain diameter reaches 0.78mm, is taken out dry
Dry 24 hours, obtain semi-finished product；
2. semi-finished product are placed in sugar coating machine, remaining haydite materials are added and continue to pelletize, partial size to be averaged reaches 0.83mm
Afterwards, drying 24 hours is taken out, precast ceramsite is obtained；
3. preheating to precast ceramsite, 300 DEG C are warming up to, heating rate is controlled at 25 DEG C/h, to ensure high score
Slowly decomposition gasification, the hole left are the sphere of rule to sub- polymer；After preheating, merging sintering machine is sintered, and is sintered
1350 DEG C of temperature to get.
Embodiment 4 prepares low-density ceramic proppant
Steps are as follows:
(1) high molecular polymer microballoon: raw material composition is prepared are as follows: white oil 20%, emulsifier 12%, acrylamide 5%, third
Olefin(e) acid 30%, N, N- methene base bisacrylamide 3%, initiator 0.08%, surplus is deionized water；
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, 2000r/min strong stirring
Initiator is added in 30min, causes at 8 DEG C, and fully reacting after 6h obtains polymer emulsion；
The emulsifier is sulfate fatty alcohol；
The initiator is that hydrogen peroxide/sulfuric acid is ferrous；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 4 times, at 40 DEG C of bakings after powdered
It does to get high molecular polymer microballoon is arrived.
(2) calculate the dosage of microballoon: the volume ratio of haydite materials (kaolin) and polymer microballoon is 3.2:1.
(3) haydite is prepared:
1. the haydite materials for accounting for haydite materials total amount 81% are mixed with high molecular polymer microballoon, moisten by spraying in mixing
It is wet, 10 hours are stood after wetting, is placed in sugar coating machine balling-up of pelletizing later, after ball average grain diameter reaches 0.78mm, is taken out dry
Dry 24 hours, obtain semi-finished product；
2. semi-finished product are placed in sugar coating machine, remaining haydite materials are added and continue to pelletize, partial size to be averaged reaches 0.83mm
Afterwards, drying 24 hours is taken out, precast ceramsite is obtained；
3. preheating to precast ceramsite, 300 DEG C are warming up to, heating rate is controlled at 20 DEG C/h, to ensure high score
Slowly decomposition gasification, the hole left are the sphere of rule to sub- polymer；After preheating, merging sintering machine is sintered, and is sintered
1300 DEG C of temperature to get.
Embodiment 5 prepares low-density ceramic proppant
Steps are as follows:
(1) high molecular polymer microballoon: raw material composition are as follows: tasteless kerosene 30%, emulsifier 3%, acrylamide is prepared
30%, acrylic acid 5%, N, N- methene base bisacrylamide 3%, initiator 0.01%, surplus is deionized water；
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, 2000r/min strong stirring
Initiator is added in 30min, causes at 8 DEG C, and fully reacting after 6h obtains polymer emulsion；
The emulsifier is sulfonate fatty alcohol；
The initiator is isopropyl benzene hydroperoxide/frerrous chloride；
2. polymer emulsion excess ethyl alcohol obtained above is deep, washing of precipitate 3 times, at 40 DEG C of bakings after powdered
It does to get high molecular polymer microballoon is arrived.
(2) calculate the dosage of microballoon: the volume ratio of haydite materials (red-mud coal ash) and polymer microballoon is 2.8:1.
(3) haydite is prepared:
1. the haydite materials for accounting for haydite materials total amount 79% are mixed with high molecular polymer microballoon, moisten by spraying in mixing
It is wet, 10 hours are stood after wetting, is placed in sugar coating machine balling-up of pelletizing later, after ball average grain diameter reaches 0.78mm, is taken out dry
Dry 24 hours, obtain semi-finished product；
2. semi-finished product are placed in sugar coating machine, remaining haydite materials are added and continue to pelletize, partial size to be averaged reaches 0.83mm
Afterwards, drying 24 hours is taken out, precast ceramsite is obtained；
3. preheating to precast ceramsite, 300 DEG C are warming up to, heating rate is controlled at 30 DEG C/h, to ensure high score
Slowly decomposition gasification, the hole left are the sphere of rule to sub- polymer；After preheating, merging sintering machine is sintered, and is sintered
1400 DEG C of temperature to get.
Above-mentioned, although specific embodiments of the present invention have been described in conjunction with the embodiments, not protects to the present invention
The limitation of range, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art
The various modifications or changes that can be made are not needed to make the creative labor still within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of low-density ceramic proppant, it is characterised in that: the following steps are included:
(1) haydite materials for accounting for haydite materials total amount 78%~81% are mixed with high molecular polymer microballoon, the haydite is former
The volume ratio of material and high molecular polymer microballoon is 2.8~3.2:1, soaks by spraying in mixing, stands after wetting, be placed in later
It pelletizes in sugar coating machine balling-up, takes out drying, obtain semi-finished product；
(2) semi-finished product are placed in sugar coating machine, the haydite materials of surplus is added, continue to pelletize, taken out drying, obtain precast ceramsite；
(3) precast ceramsite is preheated, is warming up to 300 DEG C ± 20 DEG C, heating rate is controlled at 20~30 DEG C/h；In advance
After heating, merging sintering machine is sintered, 1300~1400 DEG C of sintering temperature to get；
The high molecular polymer microballoon is made of the raw material of following weight percent: tasteless kerosene or white oil 20%~
30%, emulsifier 3%~12%, acrylamide 5%~30%, acrylic acid 5%~30%, N, N- methene base bisacrylamide
3%~7%, initiator 0.01%~0.1%, surplus is water；It is prepared by the following method to obtain:
1. emulsion polymerization prepares microsphere precursor: removing each raw material outside initiator, mix, stirring is added initiator, draws at 8 DEG C
Hair, obtains polymer emulsion after fully reacting；
2. polymer emulsion excess ethyl alcohol is deep, it washing of precipitate 3~4 times, dries to get high molecular polymer microballoon is arrived.
2. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: the haydite materials,
Selected from bauxite, kaolin, industrial waste.
3. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: in the step (1),
The volume ratio of haydite materials and high molecular polymer microballoon is 3:1.
4. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: in the step (1),
The haydite materials for accounting for haydite materials total amount 79.5% are mixed with high molecular polymer microballoon.
5. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: in the step (1),
10 hours are stood after wetting, is placed in sugar coating machine balling-up of pelletizing later, after spherolite diameter reaches 0.78mm, it is small to take out dry 24
When, obtain semi-finished product；
In the step (2), continue to pelletize, after partial size to be averaged reaches 0.83mm, takes out drying, obtain precast ceramsite.
6. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: the high molecular polymerization
Object microballoon is made of the raw material of following weight percent: tasteless kerosene or white oil 25%, emulsifier 5%~8%, propylene
Amide 20%~30%, acrylic acid 5%~15%, N, N- methene base bisacrylamide 5%, initiator 0.01%~0.1% is remaining
Amount is water.
7. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: the high molecular polymerization
Object microballoon is made of the raw material of following weight percent: tasteless kerosene or white oil 25%, emulsifier 6%, acrylamide
25%, acrylic acid 10%, N, N- methene base bisacrylamide 5%, initiator 0.01%~0.1%, surplus is deionized water.
8. the preparation method of low-density ceramic proppant according to claim 1, it is characterised in that: the emulsifier is selected from
Alkyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, isomery fatty alcohol polyoxyethylene ether, carboxylate fatty alcohol, carboxylate rouge
Fat amine, sulfate fatty alcohol, sulfate fatty amine, sulfonate fatty alcohol, any one or two kinds in sulfonate fatty amine with
On combination；
The initiator is selected from azo-initiator, redox initiator.
9. being prepared using the preparation method of low-density ceramic proppant described in any one of claim 1~8 low close
Spend high-strength ceramic granule propping agent.
10. low-density ceramic proppant as claimed in claim 9 is as the application in fracture in oil and water wells proppant.
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| CN115974525A (en) * | 2023-01-12 | 2023-04-18 | 重庆聚源塑料股份有限公司 | Light ceramsite and preparation method and application thereof |
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