CN106167700A - A kind of super light ceramisite proppant, prepare and apply and shale oil gas recovery method - Google Patents
A kind of super light ceramisite proppant, prepare and apply and shale oil gas recovery method Download PDFInfo
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- CN106167700A CN106167700A CN201610586076.6A CN201610586076A CN106167700A CN 106167700 A CN106167700 A CN 106167700A CN 201610586076 A CN201610586076 A CN 201610586076A CN 106167700 A CN106167700 A CN 106167700A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000003079 shale oil Substances 0.000 title claims abstract description 19
- 238000011084 recovery Methods 0.000 title abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 67
- 239000010883 coal ash Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims description 64
- 239000002893 slag Substances 0.000 claims description 32
- 239000005995 Aluminium silicate Substances 0.000 claims description 31
- 235000012211 aluminium silicate Nutrition 0.000 claims description 31
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 31
- 239000008187 granular material Substances 0.000 claims description 26
- 238000005245 sintering Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 13
- 238000012216 screening Methods 0.000 claims description 12
- 238000000889 atomisation Methods 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000010298 pulverizing process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 claims 1
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 abstract description 7
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 22
- 238000000227 grinding Methods 0.000 description 18
- 239000000203 mixture Substances 0.000 description 15
- 239000000047 product Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000005303 weighing Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Combustion & Propulsion (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a kind of super light ceramisite proppant, prepare and apply and shale oil gas recovery method.In proppant of the present invention, with coal ash as primary raw material, thus reduce the consumption of other Ores, and reduce manufacturing cost；Simultaneously as using low-density coal ash etc. as primary raw material in the present invention, thus also reduce further the density of obtained proppant.Proppant of the present invention has the advantages such as low in raw material price, obtained ceramsite propping agent density is low, intensity is good, and shale oil gas reservoir exploitation can be effective to, and the consumption of the related product such as guanidine glue in exploitation reducig, while reducing cost of winning, additionally it is possible to the environmental pollution that exploitation reducig is brought.
Description
Technical field
The present invention relates to oil-gas mining field, in particular to a kind of super light ceramisite proppant, prepare and apply and
Shale oil gas recovery method.
Background technology
Hydrofracturing method is also referred to as hydraulic crushing method, a kind of drilling technology used when being to exploit unconventional shale oil gas, main
Wanting target is to make well production increment.The principle of hydrofracturing method is to utilize ground high-pressure pump by a large amount of chemical substances doping water, sand
Etc. making fracturing fluid, Reperfu-sion rock depths pressure break rock, oil or natural gas are derived from fine and close rock stratum, thus will
The oil and natural gas resource being stored in flood tide in shale gas discharges.
Currently, natural gas well effect of increasing production is become apparent from by hydrofracturing method.Although technique has existed exceedes 60 years,
But apply in the U.S. recently in the production of shale oil gas greatly.Shale production technology helps the U.S. to surmount
Saudi Arabia and Russia, and Oil Producing Countries maximum in the world was become in 2014.
Ending 2015, China's shale gas yield has reached 65 billion cubic meters, but still limited on the impact of combustion gas general layout.I
At present or supply falls short of demand for state's natural gas, needs to be up to 3000 billion cubic meters to the year two thousand twenty China's natural gas, it is contemplated that 2020
Annual production is up to 2000 billion cubic meters, and insufficiency of supply-demand 1000 billion cubic meter, external dependence degree is up to 33%.By 2015
The end, China's shale gas resource exploration and yield be continuously increased, respectively in Jiangxi, Sichuan, Chongqing, Henan yield everywhere the most
Breaking through, this external Guizhou, Hunan, Gansu, Hubei and Anhui, Shanxi have found and have explored.
Use hydrofracturing method to exploit in the construction of unconventional shale oil gas, the most all can use proppant, the most normal
A kind of proppant be exactly ceramic particle proppant.
Ceramsite propping agent be by several Ores through dispensing, grind to form powder body, be agglomerated into spherical particles, drying, high temperature burn
Tie, cool down, by a kind of ceramic material after the screening of regulation particle diameter.It can as the filler of oil-gas mining process, and
The life-span of the yield of oil gas, flow conductivity, permeability and Oil/gas Well can be increased.
Ceramsite propping agent is divided into 4 kinds of products by the height of its bulk density (bulk density) and apparent density (real density)
Product, i.e. high density, Midst density, low-density and Ultralight.The density of ceramsite propping agent is the lowest, pass used in work progress
Joint product (such as guanidine glue) are the fewest, thus reduce shale oil gas cost of winning, and reduce chemicals use environment is produced
Pollution.
Thus, super light ceramisite proppant has just become the focus place of research and development.But, although existing product name on market
For super light ceramisite, but it is mostly that bulk density and apparent density (real density) actually do not reach requirement；Meanwhile, existing on market
There are the mineral resources such as raw material many employings fine aluminum Alumina of formula for a product, manganese powder, dolomite, high-quality flint clay, these Ores
A large amount of exploitations not only ecological environment is damaged, and also further cause oil fracturing owing to cost of material is too high and prop up
The cost of support remains high.
In view of this, the special proposition present invention.
Summary of the invention
The first object of the present invention is to provide a kind of super light ceramisite proppant, in described proppant, with coal ash is
Primary raw material, thus reduce the consumption of other Ores, and reduce manufacturing cost, and then solve the support of prior art haydite
Agent preparation uses the problem such as the environment brought and manufacturing cost height due to ore.Simultaneously as in the present invention with
Low-density coal ash etc. are as primary raw material, thus also reduce further the density of obtained proppant.Proppant of the present invention has
There are the advantages such as low in raw material price, obtained ceramsite propping agent density is low, intensity is good.
The second object of the present invention is to provide the preparation method of a kind of described super light ceramisite proppant, described method
In, by the most described formula as raw material, and pass through pulverizing, homogenizing, dispensing, grind and dry the steps such as sintering
Suddenly prepare super light ceramisite proppant, there is preparation method convenient, the advantages such as obtained ceramsite propping agent resistance to pressure is good.
Third object of the present invention is that provide described super light ceramisite proppant in shale oil gas reservoir exploitation answers
With.Super light ceramisite proppant density of the present invention is low and resistance to pressure good, it is possible to is effective to shale oil gas reservoir exploitation, and reduces
(such as guanidine glue) consumption of other related products in exploitation, while reducing cost of winning, additionally it is possible to exploitation reducig is brought
Environmental pollution.
In order to realize the above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of super light ceramisite proppant, according to percent by weight, described proppant is mainly made up of following raw material: high
Ridge soil 20～50%, slag 10～45% and coal ash 30～70%.
In the present invention, by using lightweight and the cheap raw materials such as coal ash, such that it is able to reducing proppant preparation cost
While, additionally it is possible to make obtained proppant have relatively low density and preferable intensity such that it is able to effectively to apply
In shale oil gas reservoir exploitation, and reduce the chemical reagent such as the guanidine glue that added in further recovery process.
Optionally, in the present invention, described proppant is made up of following raw material: Kaolin 20～50%, can be such as but
It is not limited to 22%, 25%, 27%, 30%, 32%, 35%, 37%, 40%, 43%, 45%, 47% etc.；Slag 20～45%,
Can be such as but be not limited to 23%, 25%, 27%, 30%, 32%, 35%, 42% or 43% etc.；And coal ash 30～
55%, can be such as but be not limited to 32%, 35%, 37%, 40%, 42%, 45%, 47%, 50% or 53% etc..
Optionally, in the present invention, the density of described proppant is 1.1-1.3g/cm3。
Optionally, in the present invention, according to percent by weight, described proppant is mainly made up of following raw material: Kaolin
30～50%, slag 30～40% and coal ash 30～40%.
In the present invention, by adjusting further and optimizing each raw material dosage, thus optimize institute of the present invention further
Prepare the performance of proppant.
Optionally, in the present invention, according to percent by weight, described proppant is made up of following raw material: Kaolin 30～
50%, slag 30～40% and coal ash 30～40%.
Meanwhile, present invention also offers the preparation method of described super light ceramisite proppant, described method includes walking as follows
Rapid:
(1) take Kaolin, slag and coal ash respectively, and pulverize；
(2) according to material rate of the present invention, weigh Kaolin, slag and the coal ash after appropriate pulverizing respectively, and mix
Homogenizing；
(3) by after the mixing raw mill after mixing homogenizing, heavy rotten homogenizing is carried out；
(4) the mixing atomizing raw materials after heavy rotten homogenizing is pelletized, then will be dried after prepared particle screening, and carry out table
Face processes, and then the granule that surface processes is stored homogenizing；
(5) the granule sintering of homogenizing will be stored, and then cool down homogenizing, and again sieve, after screening, again carry out surface
Reason, obtains described super light ceramisite proppant.
In the present invention, by the most described component as raw material, and through dispensing, grinding and drying and sintering
Prepare super light ceramisite proppant of the present invention etc. step procedure, thus can sinter at a lower temperature and prepare have good
The ceramsite propping agent of resistance to pressure；Meanwhile, in the present invention, by arranging repeatedly homogenizing and heavy corruption operation, it is also possible to make the present invention
Raw material chemical constituent composition is more uniform, it is also possible to reduce the internal stress of raw mixture powder body, thus after increasing pelletize
The viscosity of grain and degree of compaction, and increase obtained proppant strength further.
In the present invention, weigh Kaolin, slag and coal ash after pulverizing described in step (2) respectively for using computer control
Measure and weigh each raw material.
In the present invention, described in be prepared as multiple batches of continuous preparation；Further, in the present invention, mix described in step (2)
Stand after all turning to again mix multiple batches of mixed raw material, be then ground.
In the present invention, heavy corruption described in step (3) all turns to the raw material intimate mixing again that will grind, and then stands laggard
Row homogenizing.
In the present invention, described in step (4), store the granule storage all turned to after being processed on surface, and homogenizing.
In the present invention, cool down the granule after all turning to sintering described in step (5) and cool down under field conditions (factors), and all
Change.
In the present invention, described in step (5), again carry out surface process, for the granule after sintering is carried out surface burnishing part
Reason.
Optionally, in the present invention, it is ground to repeatedly grind described in step (3), and is ground to the mixing after mixing homogenizing
The particle diameter of raw material is less than or equal to 21 μm；Such as 2,3,4 or grind more times.
In the present invention, the method repeatedly ground by employing, and control the particle diameter of raw mixture, such that it is able to improve mist
Change the cohesive of granule after pelletize, can also make simultaneously raw material in sintering process response speed faster and raw material reaction more
Fully, improve crystal grain proportion, and make crystal grain arrangement closely knit；Further, repeatedly grinding can also improve product surface
Fineness, and reduce the breakage rate of product, the intensity of obtained proppant can also be improved simultaneously.
Optionally, in the present invention, described grinding is carried out in ball mill.
Optionally, in the present invention, atomization described in step (4) pelletize for after making water fogging with heavy corruption homogenizing after mixing former
After material mixes, in rotation, agglomerate is pelletized；
Wherein, the quality grams of water is the 5～20% of the quality grams of the mixing raw material after heavy rotten homogenizing, such as, can be
But it is not limited to 6%, 8%, 10%, 12%, 15%, 17% or 19% etc..
In the present invention, by the selection of institute's water consumption in atomization steps and adjustment, so that obtained
Grain has preferable viscosity.
Optionally, in the present invention, the quality grams of described water is the 10 of the quality grams of the mixing raw material after heavy rotten homogenizing
～15%.
In the present invention, by the further of institute's water consumption in atomization steps is adjusted and optimizes, such that it is able to carry further
The viscosity of high obtained granule.
Optionally, in the present invention, surface described in step (4) is processed as the particle surface hair into removing dried gained
Thorn.
Optionally, in the present invention, described in step (5), the temperature of sintering is 1000～1500 DEG C, and the time of sintering is 0.5
～2h；Preferably, in the present invention, described in step (5) sintering temperature be 1200～1300 DEG C, the time of sintering be 1～
1.5h；The temperature such as sintered can be 1230 DEG C, 1250 DEG C, 1270 DEG C or 1290 DEG C etc.；The time such as sintered is permissible
For 1.2h, 1.3h or 1.4h etc..
In the present invention, by sintering time and temperature being selected and adjusting, thus can be by semi-finished product proppant particles
Fully while sintering, the structural deterioration of the ceramsite propping agent granule that also will not be caused due to excess agglomeration or resistance to pressure fall
Low.
Meanwhile, present invention also offers the application in shale oil gas reservoir exploitation of the described super light ceramisite proppant.
Super light ceramisite proppant density of the present invention is low and resistance to pressure good, it is possible to be effective to shale oil gas reservoir exploitation, and
And (such as guanidine glue) consumption of related product in exploitation reducig, while reducing cost of winning, additionally it is possible to exploitation reducig is carried
The environmental pollution come.
Further, a kind of method that present invention also offers shale oil gas reservoir exploitation, described method uses the present invention
Described super light ceramisite proppant.
Compared with prior art, the invention have the benefit that
(1) in the present invention, super light ceramisite proppant raw material is cheap and easy to get, it is possible to reduce the use of ore, simultaneously
It sinters preparation further and can also carry out at a lower temperature, can not only save the energy, additionally it is possible to reduce preparation cost；With
Time, proppant strength of the present invention is higher but density is relatively low, uses guanidine glue etc. conventional in oil-gas mining such that it is able to greatly reduce
Chemical products, and then while reducing cost of winning, additionally it is possible to reduce the pollution to environment；
(2) in the present invention, by the most described component as raw material, and through dispensing, grind and dry
The step procedure such as sintering prepare super light ceramisite proppant of the present invention, thus can sinter at a lower temperature and prepare have good
The ceramsite propping agent of good resistance to pressure；Meanwhile, in the present invention, by repeatedly homogenizing in preparation process, not only make the present invention
Raw material chemical constituent composition is more uniform, also reduces the internal stress of raw mixture powder body, thus granule after increasing pelletize
Viscosity and degree of compaction, and increase the intensity of obtained proppant further.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described.
Fig. 1 is to sinter gained particle appearance figure in the embodiment of the present invention after grinding；
Fig. 2 is the electron-microscope scanning figure sintering gained granule in the embodiment of the present invention after grinding；
Fig. 3 is without grinding and sintering gained particle appearance figure in comparative example of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
Understanding, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.In embodiment unreceipted specifically
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument unreceipted production firm person, be
Can be by the commercially available conventional products bought and obtain.
Embodiment 1
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 25%, slag 25% and coal ash 50%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1250 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of embodiment illustrated in fig. 11.
Further the super light ceramisite proppant obtained by embodiment 1 is scanned Electronic Speculum detection, testing result such as Fig. 3
Shown in.In super light ceramisite proppant acicular mullite surface texture obtained by the present invention, crystal grain accounting raises, and crystal grain arrangement is close
Real.
The super light ceramisite proppant density of embodiment 1 is relatively low, thus is pressing used by further shale oil gas reservoir exploitation
Split in agent, it is only necessary to use minimal amount or without using guanidine glue, this can not only save pressure break agent cost, additionally it is possible to avoid by
Environmental system pollution in the subsoil water etc. that the use of pressure break agent is brought.
Embodiment 2
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 20%, slag 10% and coal ash 70%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1260 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of embodiment 2.
Embodiment 3
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 40%, slag 30% and coal ash 30%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1270 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of embodiment 3.
Comparative example 1
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 60%, slag 20% and coal ash 20%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1280 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of comparative example 1.
Comparative example 2
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 15%, slag 60% and coal ash 25%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1230 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of comparative example 2.
Comparative example 3
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 15%, slag 12% and coal ash 73%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) by the mixing raw material after mixing homogenizing after secondary grinds, the particle diameter of grinding mixing raw material is detected,
Mean diameter≤21 μm of result display gained powder body；
Then mixing raw material is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1240 DEG C, then cool down homogenizing, and again sieve, then
Granule after sintering is carried out surface grinding process again, obtains the super light ceramisite proppant of comparative example 3.
Comparative example 4
(1) take appropriate Kaolin, slag and coal ash respectively, and pulverize；
(2) according to percetage by weight: Kaolin 25%, slag 35% and coal ash 40%, after weighing appropriate pulverizing respectively
Kaolin, slag and coal ash, and mix homogenizing；
(3) the mixing raw material after mixing homogenizing is carried out heavy rotten homogenizing；
(4) after making water fogging, mixing with the mixing raw material after heavy rotten homogenizing, in rotation, agglomerate is pelletized, and then will
The particle screening post-drying prepared, and remove the particle surface burr of dried gained, then by remove after surface spikes
Grain stores homogenizing；
Wherein, the 15% of the quality grams of the mixing raw material after the quality grams of the water used by atomization is heavy rotten homogenizing；
(5) granule storing homogenizing is sintered 1h under the conditions of 1250 DEG C, then cool down homogenizing, and again sieve, to obtain final product
The super light ceramisite proppant of comparative example 4 shown in Fig. 3.
Experimental example 1
Equivalent haydite is weighed at random respectively from the Lightweight ceramsite proppant obtained by embodiment 1-3 and comparative example 1-4,
Line density of going forward side by side and percentage of damage test, result is as follows:
Lightweight ceramsite proppant obtained by proportioning raw materials of the present invention and preparation method have relatively low bulk density and
Apparent density, the most also has good mechanical strength, it is possible to be applicable to shale oil gas reservoir exploitation.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
May be made that in the case of spirit and scope many other change and amendment.It is, therefore, intended that in the following claims
Including all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. a super light ceramisite proppant, it is characterised in that according to percent by weight, described proppant is mainly by following former
Material is made: Kaolin 20～50%, slag 10～45% and coal ash 30～70%.
Proppant the most according to claim 1, it is characterised in that according to percent by weight, described proppant mainly by
Following raw material is made: Kaolin 30～50%, slag 30～40% and coal ash 30～40%.
3. the preparation method of proppant described in claim 1 or 2, it is characterised in that described method comprises the steps:
(1) take Kaolin, slag and coal ash respectively, and pulverize；
(2) according to the material rate described in claim 1 or 2, Kaolin, slag and the coal after appropriate pulverizing is weighed respectively
Ash, and mix homogenizing；
(3) by after the mixing raw mill after mixing homogenizing, heavy rotten homogenizing is carried out；
(4) the mixing atomizing raw materials after heavy rotten homogenizing is pelletized, then will be dried after prepared particle screening, and carry out surface
Reason, then stores homogenizing by the granule that surface processes；
(5) the granule sintering of homogenizing will be stored, and then cool down homogenizing, and again sieve, again carry out surface process after screening, i.e.
Obtain described super light ceramisite proppant.
Method the most according to claim 3, it is characterised in that be ground to repeatedly grind described in step (3), and be ground to
The particle diameter of the mixing raw material after mixing homogenizing is less than or equal to 21 μm.
Method the most according to claim 3, it is characterised in that atomization described in step (4) pelletize as after making water fogging and
After mixing raw material after heavy rotten homogenizing mixes, in rotation, agglomerate is pelletized；
Wherein, the 5～20% of the quality grams of the mixing raw material after the quality grams of water is heavy rotten homogenizing.
Method the most according to claim 5, it is characterised in that the quality grams of described water is that the mixing after heavy rotten homogenizing is former
The 10～15% of the quality grams of material.
Method the most according to claim 3, it is characterised in that surface described in step (4) is processed as removing dried institute
Obtain the surface spikes of granule.
Method the most according to claim 3, it is characterised in that described in step (5), the temperature of sintering is 1000～1500
DEG C, the time of sintering is 0.5～2h.
9. super light ceramisite proppant application in shale oil gas reservoir exploitation described in claim 1 or 2.
10. a shale oil gas reservoir exploitation method, it is characterised in that use Ultralight described in claim 1 or 2 in described method
Ceramsite propping agent.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286315A (en) * | 1999-08-26 | 2001-03-07 | 徐欣 | Process for comprehensive utilization of blast furnace top gas mud containing Zn |
| CN102718525A (en) * | 2012-06-18 | 2012-10-10 | 陕西科技大学 | Method for preparing fracturing propping agent using slag |
| CN103288425A (en) * | 2013-05-16 | 2013-09-11 | 陕西科技大学 | Method for preparing fracturing propping agent special for shale gas from waste slag |
| CN103288426A (en) * | 2013-05-28 | 2013-09-11 | 陕西科技大学 | Method for preparing special fracturing propping agent for shale gas by utilizing industrial waste |
-
2016
- 2016-07-25 CN CN201610586076.6A patent/CN106167700B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286315A (en) * | 1999-08-26 | 2001-03-07 | 徐欣 | Process for comprehensive utilization of blast furnace top gas mud containing Zn |
| CN102718525A (en) * | 2012-06-18 | 2012-10-10 | 陕西科技大学 | Method for preparing fracturing propping agent using slag |
| CN103288425A (en) * | 2013-05-16 | 2013-09-11 | 陕西科技大学 | Method for preparing fracturing propping agent special for shale gas from waste slag |
| CN103288426A (en) * | 2013-05-28 | 2013-09-11 | 陕西科技大学 | Method for preparing special fracturing propping agent for shale gas by utilizing industrial waste |
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