CN107056267A - Fracturing propping agents and preparation method thereof - Google Patents
Fracturing propping agents and preparation method thereof Download PDFInfo
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- CN107056267A CN107056267A CN201710329191.XA CN201710329191A CN107056267A CN 107056267 A CN107056267 A CN 107056267A CN 201710329191 A CN201710329191 A CN 201710329191A CN 107056267 A CN107056267 A CN 107056267A
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Abstract
The invention provides a kind of fracturing propping agents and preparation method thereof, it is related to technical field of petrochemical industry, the fracturing propping agents use sericite, bauxite proppant waste material, silica and additive for raw material, wherein, sericite and silica resource reserves are big, cheap, compare high-order product bauxite (such as Al used in the prior art2O3Content is more than 73%), consider that fracturing propping agents cost can be greatly reduced from cost of material, simultaneously, the fracturing propping agents have bulk density, apparent density, acid solubility and the low advantage of percentage of damage, production cost and pressure break cost can not only be reduced, also help oil gas field volume increase, alleviate used in the production of existing fracturing propping agents cast alumin(i)um alumina or light-burned bauxite for main raw material production cost it is too high the problem of.
Description
Technical field
The present invention relates to technical field of petrochemical industry, more particularly, to a kind of fracturing propping agents and preparation method thereof.
Background technology
Fracturing propping agents are a kind of ceramic particle products, with very high fracturing strengh, are mainly used in oil field well support,
To increase the yield of petroleum gas, during petroleum gas deep mining, high closure pressure break deposits of low permeability is through frac treatment
Afterwards, Oil gas-containing rock layer is made to split, oil gas collects from the passage of cracking initiation.With haydite backing material in company with high-pressure solution
Into Filling in rock crack, playing a part of support crack, stress does not discharge and closed, so as to keep high water conservancy diversion
Ability, makes oil gas unimpeded, increases yield.It was verified that yield 30-50% can be improved using the oil well of ceramsite propping agent pressure break,
And support ground not sink, and then extend the Oil/gas Well length of service.
Current oil market price continues low price tendency, oil exploitation is produced to form larger cost pressure break, especially
It is oil field at home, cost of winning is very high always, each oil field proposes economical haydite in recent years, it is intended that reduction cost of winning, from
And the procurement price to ceramsite propping agent is constantly demanded a lower price, this it is also proposed new direction to ceramsite propping agent production.
The method of production fracturing propping agents has many kinds at present, but uses cast alumin(i)um alumina or light-burned bauxite to be main former
Material, AL2O3Content adds part rare earth ore concentrate more than 73%, and both cost of material are more expensive, and reserves have been approached
Exhaustion, is difficult to buy.Maximum temperature has all reached 1500 DEG C in terms of firing temperature, also occupies the fuel cost needed for burning till high
Under not.
Therefore, a kind of prices of raw materials are researched and developed low, and energy consumption is low in process, with good economy
Fracturing propping agents become very necessary and urgent.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of fracturing propping agents, and the fracturing propping agents are using sericite to be main former
Material, has the advantages that cost of material is low, in addition, the fracturing propping agents prepared also have bulk density, apparent density, acid solubility
With the low advantage of percentage of damage.
The second object of the present invention is to provide a kind of preparation method of fracturing propping agents, to alleviate system of the prior art
High and high energy consumption the technical problem of Preparation Method sintering temperature.
A kind of fracturing propping agents that the present invention is provided, are counted by weight, and the fracturing propping agents are main by following raw material
It is made：5~15 parts of 35~45 parts of sericite, 15~30 parts of bauxite proppant waste material and silica and 5~25 parts of additive.
Further, count by weight, the fracturing propping agents are mainly made up of following raw material：Sericite 38~42
Part, 18~25 parts of bauxite proppant waste material and 10~22 parts of 8~12 parts of silica and additive.
Further, count by weight, the fracturing propping agents are mainly made up of following raw material：40 parts of sericite,
20 parts of bauxite proppant waste material and 15 parts of 10 parts of silica and additive.
Further, the additive is mainly made up of following components：60~65 parts of bauxite, 8~12 parts of lanthanide rare,
0.3~1 part of 2~6 parts of kaolin, fluxing agent 8~12 and manganese ore；
Wherein, the fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Further, count by weight, the additive is mainly made up of following raw material：62~64 parts of bauxite, lanthanum
It is 0.4~0.8 part of 9~11 parts of rare earth, 3~5 parts of kaolin, fluxing agent 9~11 and manganese ore.
Further, count by weight, the additive is mainly made up of following raw material：63 parts of bauxite, group of the lanthanides
0.6 part of 10 parts of rare earth, 4 parts of kaolin, fluxing agent 10 and manganese ore.
What the present invention was provided, a kind of preparation method of fracturing propping agents comprises the following steps：By sericite, bauxite branch
Support agent waste material, silica and additive together to granulate after ball milling, be then sintered and obtain fracturing propping agents.
Further, the powder after ball milling is first crossed 300~500 mesh sieves by raw material after ball milling, then is granulated.
Further, the granulation is to be granulated using water atomization, then screening obtain particle diameter be 0.212~
0.425mm spherical particle.
Further, the sintering temperature is 1250~1300 DEG C.
Further, the preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, sericite, bauxite proppant waste material, silica and additive are subjected to ball milling, obtain mesh number
For 300~500 targeted fine powders；
Step (b)：It is spherical of 0.212~0.425mm by particle diameter is made in fine powder input nodulizer made from step (a)
Grain, then, obtained spherical particle is sintered at a temperature of 1250~1300 DEG C, and fracturing propping agents are made.
Compared with prior art, beneficial effects of the present invention are：
1st, the fracturing propping agents that the present invention is provided, above-mentioned fracturing propping agents use sericite, bauxite proppant waste material, silicon
Stone and additive are raw material, wherein, sericite and silica resource reserves are big, cheap, phase high bit product bauxite (such as Al2O3
Content is more than 73%), consider greatly reduce cost from cost of material, meanwhile, the present invention by using sericite as major ingredient,
The proportioning of science is carried out to raw material, the temperature burnt and made is reduced, and then reduces energy consumption, cost has been saved.In addition, the pressure break branch
Support agent there is bulk density, apparent density, acid solubility and the low advantage of percentage of damage, can not only reduce production cost and pressure break into
This, also helps oil gas field volume increase, alleviates and is used in existing fracturing propping agents production based on cast alumin(i)um alumina or light-burned bauxite
Want the problem of raw material production cost is too high.
2nd, the preparation method for the fracturing propping agents that the present invention is provided, this method has technological process simple, suitable for industrialization
Production and the low advantage of firing temperature.The sintering temperature of fracturing propping agents is 1250~1300 DEG C in the present invention, and conventionally employed
Al2O3When bauxite of the content more than 73% cooks major ingredient, fracturing propping agents sintering temperature is 1500 DEG C or so, system of the invention
Preparation Method has the advantages that to burn that to make temperature low, and then saves fuel cost, alleviates in prepared by existing fracturing propping agents and fires
Temperature is high, the problem of consuming energy big.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of embodiment of the invention to apply example, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
According to an aspect of the present invention, a kind of fracturing propping agents, are counted by weight, the fracturing propping agents it is main by
Following raw material is made：5~15 parts of 35~45 parts of sericite, 15~30 parts of bauxite proppant waste material and silica and additive 5~
25 parts.
In the present invention fracturing propping agents use the function of raw material for：
Sericite：It is one kind of mica, it belongs to the silicate mineral with layer structure, can be split into very thin piece
Shape, footpath thickness is big, and wear resistence and wearability are good, while high temperature insulation, is insoluble in acid-base solution, chemical property is stable.Other thin,tough silk
The chemical composition of mica, structure and kaolin are close, some characteristics with clay mineral.Therefore, sericite has mica concurrently
The various features of class mineral and clay minerals.The present invention uses sericite substantially to be reduced for major ingredient production fracturing propping agents
The cost of raw material.
Bauxite proppant waste material：Refer to the waste material produced in original bauxite proppant production process.The present invention is utilized
Bauxite proppant waste material does auxiliary material and sepiolite reaction production skeleton structure, makes what is produced in bauxite proppant production process
Bauxite proppant waste material is re-used, and reduces the reprocessing process of bauxite proppant waste material.Aluminium alum in the present invention
The production process of native proppant includes that Al will be contained2O3Other auxiliary materials such as bauxite and metal oxide mix after ball milling, granulation,
The process such as screening and sintering, after sintering because sintering temperature, sintering time are improper or particle occurs in sintering furnace in itself
Roll, rupture or some waste materials can be produced the problems such as performance not up to standard, this is that alleged bauxite proppant in the present invention gives up
Material.
In the present invention, typical but non-limiting bauxite proppant waste material preparation process is：
Step 1：By Al2O3Content is more than 75% bauxite.The particle for 3mm is crushed after being calcined at 800 DEG C, A material are obtained；
Step 2：With 100 parts by weight A material for base-material, following auxiliary material is added in base-material：4 parts of bentonite, fluoro-carbon-cerium ore concentrate 2
Part, 0.6 part of manganese dioxide, 0.5 part of magnesia；Particle diameter is worn into altogether into grinding machine after base, auxiliary material are mixed is less than the micro- of 0.05mm
Powder, obtains B material；
Step 3：To B material add water, after loosening rotating speed be 20r/min and with the horizontal 60 degree of inclination angles water chestnut type into
It is 0.6mm that particle diameter is made in ball machine, and circularity and sphericity are all higher than 0.9 spherolite, obtains C material；
Step 4：Load tunnel cave or rotary kiln sintering after C material are sieved, sintering temperature is controlled at 1500 DEG C, during sintering
Between for 2 hours, then again polished, dedusting, sieve to obtain finished product.
The bauxite branch of particle diameter or circularity and sphericity requirement is not met after being sintered in above-mentioned preparation method, step 4 through screening
Support agent, as bauxite proppant waste material.
Silica：It is the general name of vein quartz, quartzite, quartzy sandstone.It is mainly used in the acid brick of metallurgical industry.It is pure
Silica can make quartz glass or refine to be used to prepare silicon compound and silicate on monocrystalline silicon, chemical industry, can also make sulfuric acid tower
Filler.It is used for glass, ceramics, portland cement etc. in building materials industry, it is also possible to make the original of the ferroalloy smeltings such as industrial silicon
Material.The present invention uses silica substantially to reduce the cost of raw material for raw material production fracturing propping agents.
Additive：Fracturing propping agents additive of the present invention, which has the intensity of auxiliary raising fracturing propping agents and reduces burning, to be made
The advantage of temperature.
In the present invention, the typical but non-limiting mass fraction of sericite is：35 parts, 38 parts, 40 parts, 42 parts or 45 parts；
The typical but non-limiting mass fraction of bauxite proppant waste material is：15 parts, 18 parts, 20 parts, 25 parts or 30 parts；Silica typical case
But nonrestrictive mass fraction is：5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts；Add
Plus the typical but non-limiting mass fraction of agent is：5 parts, 10 parts, 15 parts, 20 parts or 25 parts.
In the present invention, above-mentioned fracturing propping agents use sericite, bauxite proppant waste material, silica and additive for original
Material, wherein, sericite and silica resource reserves are big, cheap, phase high bit product bauxite (such as Al2O3Content 73% with
On), consider greatly reduce cost from cost of material, meanwhile, the fracturing propping agents have bulk density, apparent density, acid molten
Xie Du and the low advantage of percentage of damage, can not only reduce production cost and pressure break cost, also help oil gas field volume increase, alleviate existing
Have fracturing propping agents production in use cast alumin(i)um alumina or light-burned bauxite for main raw material production cost it is too high the problem of.
In the preferred embodiment of the present invention, count by weight, the fracturing propping agents are main by following original
Material is made：8~12 parts of 38~42 parts of sericite, 18~25 parts of bauxite proppant waste material and silica and 10~22 parts of additive.
In above-mentioned preferred embodiment, count by weight, the fracturing propping agents are mainly made up of following raw material：Thin,tough silk
10 parts of 40 parts of mica, 20 parts of bauxite proppant waste material and silica and 15 parts of additive.
In the present invention, by the further adjustment and optimization to above-mentioned fracturing propping agents each component raw material dosage ratio, from
And further optimize the effect of fracturing propping agents of the present invention.
In the preferred embodiment of the present invention, the additive is mainly made up of following components：Bauxite 60~
0.3~1 part of 65 parts, 8~12 parts of lanthanide rare, 2~6 parts of kaolin, fluxing agent 8~12 and manganese ore；
Wherein, the fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
In the present invention, above-mentioned additive uses bauxite, lanthanide rare, kaolin, fluxing agent and manganese ore for raw material, its
In, bauxite, lanthanide rare and kaolinic addition can significantly improve the intensity of fracturing propping agents, and the addition of fluxing agent can be with
The burning of reduction fracturing propping agents makes temperature, and manganese ore can improve the outward appearance intensity of fracturing propping agents and reduce burning as mineralizer
Make temperature.Therefore, above-mentioned additive being added in fracturing propping agents, there is auxiliary to improve the intensity of fracturing propping agents and burning is reduced
Make the advantage of temperature.
In the present invention, the typical but non-limiting mass fraction of bauxite is：60 parts, 61 parts, 62 parts, 63 parts, 64 parts or
65 parts；The typical but non-limiting mass fraction of lanthanide rare is：8 parts, 9 parts, 10 parts, 11 parts or 12 parts；Kaolin typical case but
Nonrestrictive mass fraction is：2 parts, 3 parts, 4 parts, 5 parts or 6 parts；The typical but non-limiting mass fraction of fluxing agent is：8
Part, 9 parts, 10 parts, 11 parts or 12 parts；The typical but non-limiting mass fraction of manganese ore is：0.3 part, 0.4 part, 0.5 part, 0.6
Part, 0.7 part, 0.8 part, 0.9 part or 1 part.
It is preferred that, above-mentioned bauxite is made a living bauxite and the mixture of light-burned bauxite, and cast alumin(i)um alumina and light-burned aluminium alum
The mass ratio of soil is 1：1.
In above-mentioned preferred embodiment, count by weight, the additive is mainly made up of following raw material：Bauxite
0.4~0.8 part of 62~64 parts, 9~11 parts of lanthanide rare, 3~5 parts of kaolin, fluxing agent 9~11 and manganese ore；
It is preferred that, count by weight, the additive is mainly made up of following raw material：63 parts of bauxite, lanthanide rare
0.6 part of 10 parts, 4 parts of kaolin, fluxing agent 10 and manganese ore.
In the present invention, by the further adjustment and optimization to above-mentioned additive each component raw material dosage ratio, so as to enter
The one-step optimization effect of fracturing propping agents additive of the present invention.
In the present invention, above-mentioned attaclay reactivity is big, easy aquation, and Mg (OH) can be generated with water effect2And harden, have
There is certain cementitiousness, above-mentioned attaclay is acted on bentonite, silicon ash and borate complex, can not only accelerate combustion reaction
Speed, the intensity and case hardness of proppant can also be effectively ensured.
According to an aspect of the present invention, a kind of preparation method of fracturing propping agents, sericite, bauxite proppant are given up
Material, silica and additive are together granulated after ball milling, are then sintered at a temperature of 1250~1300 DEG C and are obtained pressure break support
Agent.
In the present invention, the preparation method of above-mentioned fracturing propping agents has technological process simple, suitable for industrialized production and burning
The low advantage of temperature processed.The sintering temperature of fracturing propping agents is 1250~1300 DEG C in the present invention, and conventionally employed Al2O3Content
When bauxite more than 73% cooks major ingredient, fracturing propping agents sintering temperature is 1500 DEG C or so, preparation method tool of the invention
Have the advantages that burning makes temperature low.And then fuel cost is saved, alleviate firing temperature height, consumption in prepared by existing fracturing propping agents
Can be big the problem of.
In the preferred embodiment of the present invention, the powder after ball milling is first crossed 300~500 mesh by raw material after ball milling
Sieve, then granulated.
As a kind of preferred embodiment, the mesh number of fine powder is 300~500 mesh after ball milling processing, is conducive to follow-up in ball
Processing in grinding machine, is more beneficial for improving the aesthetic finish of product.
In the preferred embodiment of the present invention, granulate to be granulated using water atomization, then screening is obtained
Particle diameter is 0.212~0.425mm spherical particle.
As a kind of preferred embodiment, 0.212~0.425mm small particle spherical particle is conducive to improving pressure break support
Density and reduction Integral-crushing rate when agent is used.
In the preferred embodiment of the present invention, the preparation method of the fracturing propping agents, specifically includes following step
Suddenly：
Step (a)：Sericite, bauxite proppant waste material, silica and additive are subjected to ball milling, it is 300 to obtain mesh number
~500 targeted fine powders；
Step (b)：It is spherical of 0.212~0.425mm by particle diameter is made in fine powder input nodulizer made from step (a)
Grain, then, obtained spherical particle is sintered at a temperature of 1150~1250 DEG C, and fracturing propping agents are made.
It is described further below in conjunction with embodiment 1~13 and comparative example 1 and 2 pairs of technical schemes.
Embodiment 1
A kind of additive, is counted by weight, and the additive is mainly made up of following raw material：60 parts of bauxite, group of the lanthanides
0.3 part of 8 parts of rare earth, 2 parts of kaolin, 8 parts of fluxing agent and manganese ore；
Wherein, above-mentioned fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Embodiment 2
A kind of additive, is counted by weight, and the additive is mainly made up of following raw material：65 parts of bauxite, group of the lanthanides
1 part of 12 parts of rare earth, 6 parts of kaolin, fluxing agent 12 and manganese ore；
Wherein, above-mentioned fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Embodiment 3
A kind of additive, is counted by weight, and the additive is mainly made up of following raw material：62 parts of bauxite, group of the lanthanides
0.4 part of 9 parts of rare earth, 3 parts of kaolin, fluxing agent 9 and manganese ore；
Wherein, above-mentioned fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Embodiment 4
A kind of additive, is counted by weight, and the additive is mainly made up of following raw material：64 parts of bauxite, group of the lanthanides
0.8 part of 11 parts of rare earth, 5 parts of kaolin, fluxing agent 11 and manganese ore；
Wherein, above-mentioned fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Embodiment 5
A kind of additive, is counted by weight, and the additive is mainly made up of following raw material：63 parts of bauxite, group of the lanthanides
0.6 part of 10 parts of rare earth, 4 parts of kaolin, fluxing agent 10 and manganese ore；
Wherein, above-mentioned fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, magnesia viscous
The mass ratio of soil, silicon ash and boric acid is 1：1：1：1.
Embodiment 6
A kind of fracturing propping agents, are counted by weight, and fracturing propping agents are mainly made up of following raw material：35 parts of sericite,
15 parts of bauxite proppant waste material and 5 parts of silica and 5 parts of the additive of embodiment 1；
The preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, the additive of sericite, bauxite proppant waste material, silica and embodiment 1 is sufficiently mixed,
Then crushing is the particle that particle diameter is 40mm, then carries out ball milling to the particle after crushing, obtains mesh number for 400 targeted fine powders；
Step (b)：It is 0.318mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), then,
Obtained spherical particle is sintered at a temperature of 1250 DEG C, fracturing propping agents are made.
Embodiment 7
A kind of fracturing propping agents, are counted by weight, and fracturing propping agents are mainly made up of following raw material：35 parts of sericite,
15 parts of bauxite proppant waste material and 5 parts of silica and 5 parts of the additive of embodiment 2；
The preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, the additive of sericite, bauxite proppant waste material, silica and embodiment 2 is sufficiently mixed,
Then crushing is the particle that particle diameter is 40mm, then carries out ball milling to the particle after crushing, obtains mesh number for 400 targeted fine powders；
Step (b)：It is 0.318mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), then,
Obtained spherical particle is sintered at a temperature of 1250 DEG C, fracturing propping agents are made.
Embodiment 8
A kind of fracturing propping agents, are counted by weight, and fracturing propping agents are mainly made up of following raw material：35 parts of sericite,
15 parts of bauxite proppant waste material and 5 parts of silica and 5 parts of the additive of embodiment 3；
The preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, the additive of sericite, bauxite proppant waste material, silica and embodiment 3 is sufficiently mixed,
Then crushing is the particle that particle diameter is 40mm, then carries out ball milling to the particle after crushing, obtains mesh number for 400 targeted fine powders；
Step (b)：It is 0.318mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), then,
Obtained spherical particle is sintered at a temperature of 1250 DEG C, fracturing propping agents are made.
Embodiment 9
A kind of fracturing propping agents, are counted by weight, and fracturing propping agents are mainly made up of following raw material：35 parts of sericite,
15 parts of bauxite proppant waste material and 5 parts of silica and 5 parts of the additive of embodiment 4；
The preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, the additive of sericite, bauxite proppant waste material, silica and embodiment 4 is sufficiently mixed,
Then crushing is the particle that particle diameter is 40mm, then carries out ball milling to the particle after crushing, obtains mesh number for 400 targeted fine powders；
Step (b)：It is 0.318mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), then,
Obtained spherical particle is sintered at a temperature of 1250 DEG C, fracturing propping agents are made.
Embodiment 10
A kind of fracturing propping agents, are counted by weight, and the fracturing propping agents are mainly made up of following raw material：Sericite 35
Part, 15 parts of bauxite proppant waste material and 5 parts of 5 parts of silica and the additive of embodiment 5；
The preparation method of above-mentioned fracturing propping agents, specifically includes following steps：
Step (a)：First, the additive of sericite, bauxite proppant waste material, silica and embodiment 5 is sufficiently mixed,
Then crushing is the particle that particle diameter is 40mm, then carries out ball milling to the particle after crushing, obtains mesh number for 400 targeted fine powders；
Step (b)：It is 0.318mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), then,
Obtained spherical particle is sintered at a temperature of 1150~1250 DEG C, fracturing propping agents are made.
Embodiment 11
A kind of fracturing propping agents, are counted by weight, and the fracturing propping agents are mainly made up of following raw material：Sericite 45
Part, 30 parts of bauxite proppant waste material and 25 parts of 15 parts of silica and the additive of embodiment 5；
The preparation method be the same as Example 6 of above-mentioned fracturing propping agents.
Embodiment 12
A kind of fracturing propping agents, are counted by weight, and the fracturing propping agents are mainly made up of following raw material：Sericite 45
Part, 20 parts of bauxite proppant waste material and 10 parts of 15 parts of silica and the additive of embodiment 5；
The preparation method be the same as Example 6 of above-mentioned fracturing propping agents.
Embodiment 13
A kind of fracturing propping agents, are counted by weight, and the fracturing propping agents are mainly made up of following raw material：Sericite 38
Part, 20 parts of bauxite proppant waste material and 2 parts of 15 parts of silica and the additive of embodiment 5；
The preparation method be the same as Example 6 of above-mentioned fracturing propping agents.
Comparative example 1
A kind of fracturing propping agents, its preparation method comprises the following steps：
Step 1：By Al2O3The bauxite that content is more than 75% is broken for the particle that particle diameter is less than 5mm, obtains major ingredient；
Step 2：Above-mentioned 100 parts of major ingredient is sufficiently mixed 5 with 0.5 part of rare earth ore concentrate, 10 parts of charcoal, industrial 0.05 part of dextrin
Minute, obtain compound；
Step 3：Above-mentioned compound is milled to the powder that granularity is less than 300 mesh；
Step 4：Obtain circularity with above-mentioned powder balling and sphericity reach 0.9 base ball；
Step 5：Base ball is sieved with double deck screen, the upper mesh of sieve aperture 18, the lower mesh of sieve aperture 30, particle diameter is more than to the sieve of 18 mesh
Upper base ball is crushed, and is then back to step 4；
Step 6：Semi-finished product ball is calcined 4 hours at 1300 DEG C；
Step 7：Base ball made from step 6 is sieved with double deck screen, the upper mesh of sieve aperture 20, the lower mesh of sieve aperture 40 obtains 20
The certified products of~40 mesh, then be polished, dust removal process；
Step 8：Certified products after step 7 is handled are wrapped up with phenol-formaldehyde resin, with obtaining production of the invention after 120 thermosettings
Product.
Comparative example 2
A kind of fracturing propping agents, its preparation method comprises the following steps：
Step 1：By Al2O3Content is more than 75% bauxite.The particle for 3mm is crushed after being calcined at 800 DEG C, A material are obtained；
Step 2：With 100 parts by weight A material for base-material, following auxiliary material is added in base-material：4 parts of bentonite, fluoro-carbon-cerium ore concentrate 2
Part, 0.6 part of manganese dioxide, 0.5 part of magnesia；Particle diameter is worn into altogether into grinding machine after base, auxiliary material are mixed is less than the micro- of 0.05mm
Powder, obtains B material；
Step 3：To B material add water, after loosening rotating speed be 20r/min and with the horizontal 60 degree of inclination angles water chestnut type into
It is 0.6mm that particle diameter is made in ball machine, and circularity and sphericity are all higher than 0.9 spherolite, obtains C material；
Step 4：Load tunnel cave after C material are sieved or rotary kiln is fired, sintering temperature is controlled at 1500 DEG C, during sintering
Between for 2 hours, then again polished, dedusting, sieve to obtain finished product.
Effect example 1
To show that fracturing propping agents intensity height of the present invention, density are big, oil gas field is conducive to increase production, now by embodiment 12 and 13
And fracturing propping agents prepared by comparative example 1 and 2 are according to People's Republic of China (PRC) oil and gas industry standard SY/T5108-
2006《Fracturing propping agents performance indications and test recommendation method》Detection, performance parameter refers to following table.
As seen from the above table, the bulk density of the embodiment of the present invention 12 and 13 is significantly less than comparative example 1 and 2, due in oil gas
Exploit in pressing crack construction, the use of ceramsite propping agent design is by cube calculating, and to purchase and calculated by ton, therefore, bulk density
Greatly, the use cost of unit volume is just high；The apparent density of the embodiment of the present invention 12 and 13 is significantly less than comparative example 1 and 2, apparent density
It is the Primary Reference data of preparing fracturing fluid, the cost of the bigger preparing fracturing fluid of apparent density is higher, and in fracturing fluid to oil gas
Well stratum is not readily portable during injecting；The acid solubility and percentage of damage of the embodiment of the present invention 12 and 13 are significantly less than contrast
Example 1 and 2, acid solubility is higher, and acid-resisting is poorer, easily by fracturing fluid corrosion failure, so as to be polluted to stratum；Percentage of damage
Higher, the crushed particles that pressure break is produced are more, and the effect for improving flow conductivity is poorer.Opposite, acid solubility and percentage of damage are got over
It is low, be conducive to fracturing yield increasing.
In summary, the fracturing propping agents that the present invention is provided have bulk density, apparent density, acid solubility and percentage of damage low
The advantages of, production cost and pressure break cost can not only be reduced, oil gas field volume increase is also helped, existing fracturing propping agents life is alleviated
Used in production cast alumin(i)um alumina or light-burned bauxite for main raw material production cost it is too high the problem of.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of fracturing propping agents, it is characterised in that count by weight, the fracturing propping agents are main by following raw material system
Into：5~15 parts of 35~45 parts of sericite, 15~30 parts of bauxite proppant waste material and silica and 5~25 parts of additive.
2. fracturing propping agents according to claim 1, it is characterised in that count by weight, the fracturing propping agents master
To be made up of following raw material：38~42 parts of sericite, 18~25 parts of bauxite proppant waste material and 8~12 parts of silica and additive
10~22 parts.
3. fracturing propping agents according to claim 1, it is characterised in that count by weight, the fracturing propping agents master
To be made up of following raw material：10 parts of 40 parts of sericite, 20 parts of bauxite proppant waste material and silica and 15 parts of additive.
4. the fracturing propping agents according to any one of claims 1 to 3, it is characterised in that count by weight, the addition
Agent is mainly made up of following components：60~65 parts of bauxite, 8~12 parts of lanthanide rare, 2~6 parts of kaolin, fluxing agent 8~12
With 0.3~1 part of manganese ore；
Wherein, the fluxing agent is the mixture of bentonite, attaclay, silicon ash and boric acid, and bentonite, attaclay, silicon
The mass ratio of ash and boric acid is 1：1：1：1.
5. fracturing propping agents according to claim 4, it is characterised in that count by weight, the additive it is main by with
Lower component is made：62~64 parts of bauxite, 9~11 parts of lanthanide rare, 3~5 parts of kaolin, fluxing agent 9~11 and manganese ore 0.4~
0.8 part；
It is preferred that, count by weight, the additive is mainly made up of following components：63 parts of bauxite, 10 parts of lanthanide rare,
0.6 part of 4 parts of kaolin, fluxing agent 10 and manganese ore.
6. a kind of preparation method of fracturing propping agents according to any one of Claims 1 to 5, it is characterised in that including with
Lower step：It will be granulated after sericite, bauxite proppant waste material, silica and additive together ball milling, be then sintered, obtain
Fracturing propping agents.
7. the preparation method of fracturing propping agents according to claim 6, it is characterised in that raw material is after ball milling first by ball milling
Powder afterwards crosses 300~500 mesh sieves, then is granulated.
8. the preparation method of fracturing propping agents according to claim 6, it is characterised in that the granulation is to use water atomization
Method is granulated, and then screening obtains the spherical particle that particle diameter is 0.212~0.425mm.
9. the preparation method of fracturing propping agents according to claim 6, it is characterised in that the sintering temperature is 1250~
1300℃。
10. the preparation method of fracturing propping agents according to claim 6, it is characterised in that specifically include following steps：
Step (a)：Sericite, bauxite proppant waste material, silica and additive are subjected to ball milling, it is 300~500 to obtain mesh number
Targeted fine powder；
Step (b)：It is 0.212~0.425mm spherical particles by particle diameter is made in fine powder input nodulizer made from step (a), so
Afterwards, obtained spherical particle is sintered at a temperature of 1250~1300 DEG C, fracturing propping agents is made.
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