CN107033871B - One kind is from suspended prop and preparation method thereof - Google Patents
One kind is from suspended prop and preparation method thereof Download PDFInfo
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- CN107033871B CN107033871B CN201710427002.2A CN201710427002A CN107033871B CN 107033871 B CN107033871 B CN 107033871B CN 201710427002 A CN201710427002 A CN 201710427002A CN 107033871 B CN107033871 B CN 107033871B
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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
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Abstract
The present invention provides a kind of preparation methods from suspended prop, silane coupler solution is sprayed onto in mixture by the proppant matrix of preheating and the mixed with polymers of water-swellable in whipping process, it reacts 3~4 hours, is obtained from suspended prop at a temperature of 60~80 DEG C.The present invention coats proppant matrix using the polymer of silane coupling agent and water-swellable, play the role of crosslinking agent, silane coupling agent was both attached with proppant matrix using siloxanes chemical bond, chemical reaction is carried out with polymer again and forms chemical bond, what is provided has good anti-shear ability, buoyancy big from suspended prop, suspension time is long in clear water, without adding toxic organic solvent, broken colloidality can be good, breaking glue solution, which has, preferably prevents swollen performance, and ability is flow backwards in crack can be strong.
Description
Technical field
The present invention relates to fluid minerals to exploit field, more particularly to a kind of from suspended prop and preparation method thereof.
Background technology
In recent years, with the fast development of world economy, demand of the human society to oil and gas is continuously increased, often
Rule petroleum reserves increasingly reduce, cannot meet the rapid growth of Demand of Oil ＆ Gas, for this purpose, people sight is turned to one after another it is hypotonic
(densification) petroleum resources and unconventional petroleum resources thoroughly.Hyposmosis (densification) petroleum resources and unconventional petroleum resources will be China
The main object of the following oil-gas exploration and development.It has confirmed, hydraulic fracturing transformation is to improve Low permeable oil and gas reservoirs, unconventionaloil pool
The important technical of production capacity and development effectiveness and benefit is hidden, thus hydraulic fracturing technology is for Low Permeability Oil/gas resource, non-
The effective means of conventional gas and oil resource exploitation.Hydraulic fracturing is borrowed in fluid high-speed injection well by ground high pressure pump truck vehicle group
The high pressure that main opening bottom has been suppressed makes reservoir rock rupture generate crack.After preventing pump truck to be stopped, pressure declines, and crack is again
Voluntarily close up, in the injection liquid after formation fracture, the sand of the big several times of mixing ratio density of earth formations enters with fluid and splits together
Seam, and permanently rest in crack, supporting crack is in open state, and oil stream environment is made to be improved for a long time.
Fracturing fluid is an important component of Fracturing Technology.Aqueous fracturing fluid is situated between with water as solvent or dispersion
Thickening agent is added thereto in matter, additive is formulated.According to the difference of water-based fracturing fluid viscosity and effect, can generally incite somebody to action
It is divided into slippery water, linear gel and cross-linked gel three types.The modification of proppant particles is advantageously used for improving it
Performance in fracturing system.
In the prior art, CN104944840A disclose it is a kind of for natural hydraulic fracturing construction from suspended prop,
Using the particle of 6~200 mesh as aggregate, phenolic resin and epoxy resin and water-soluble high-molecular material are added into aggregate；
CN105754580A discloses a kind of pressure break with low frictional resistance from suspended prop, and surface conditioning agent is evenly distributed on proppant table
Face；CN104946235A is disclosed water-soluble high-molecular material being scattered in aggregate and is made from suspended prop；
CN104364343A, CN103764948A disclose the surface applied hydrogel coating and be overlying on proppant particles, and in the table
Face colocalization is to produce modified proppant.But it is existing these from suspended prop in acetone, second involved in implementation process
The organic solvents such as acetoacetic ester, methyl acetate inevitably cause personnel, environment certain harm；And from suspended prop
Polymer and proppant matrix are only subjected to physical mixed, cannot meet the needs of pressure break.
Invention content
In view of this, the purpose of the present invention is to provide one kind from suspended prop and preparation method thereof, using silane idol
The polymer of connection agent and water-swellable coats proppant matrix, does not use other organic solvents, environmentally protective, favorably
In genesis analysis of the proppant in crack, improves proppant in hydraulically created fracture and be laid with efficiency.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
A kind of preparation method from suspended prop includes the following steps：
(1) by the proppant matrix of preheating and the mixed with polymers of water-swellable, mixture is obtained；
(2) under agitation, silane coupler solution is sprayed onto in the mixture that the step (1) obtains, 60
It reacts 3~4 hours, is obtained from suspended prop at a temperature of~80 DEG C.
Preferably, the mass ratio of the polymer of proppant matrix and water-swellable is 1000 in the step (1):5~15.
Preferably, the preheating temperature of proppant matrix is 60~80 DEG C in the step (1).
Preferably, the polymer of water-swellable includes polyacrylamide, modified polyacrylamide, shallow lake in the step (1)
Powder grafted propylene Barbiturates, graft acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose grafting third
One or more of acrylamide, cross-linking type hydroxyethyl cellulose graft acrylamide polymer and poly- (methyl) acrylates
Mixture.
Preferably, the grain size of the polymer of water-swellable is 100~200 mesh in the step (1).
Preferably, proppant matrix includes quartz sand, bauxite, sintered bauxite, ceramics in the step (1).
Preferably, the grain size of proppant matrix is 16~70 mesh in the step (1).
Preferably, in the step (2) in silane coupler solution silane coupling agent include KH470, KH530, KH550,
KH560, KH561, KH570 or KH792.
Preferably, the mass ratio of silane coupler solution and proppant matrix is 1~5 in the step (2):100；It is described
The mass fraction of silane coupler solution is 5~20%.
The present invention also provides preparation method described in above-mentioned technical proposal obtain from suspended prop.
The present invention provides a kind of preparation method from suspended prop, by the proppant matrix of preheating and water-swellable
Mixed with polymers obtains mixture, and under agitation, silane coupler solution is sprayed onto in mixture, and it is anti-that chemistry occurs
It answers, obtains from suspended prop.
The invention has the advantages that and good effect：
1. the present invention coats proppant matrix using the polymer of silane coupling agent and water-swellable, play
The effect of crosslinking agent, silane coupling agent are a kind of in the molecule while containing there are two types of the organosilicon compounds of different chemical property groups
Object, general formula YSiX3, X is hydrolyzable groups in formula, and the ends X hydrolyze to form silanol Y-Si (OH)3, silanol and proppant matrix into
Row condensation reaction forms siloxanes, i.e. silane coupling agent is attached with proppant matrix using siloxanes chemical bond；Y is non-aqueous
Group, including alkenyl are solved, such as vinyl and end carry Cl, NH2, SH, epoxy group, N3, it is (methyl) acryloxy, different
The alkyl of the functional groups such as cyanic acid ester group, i.e. carbon functional group；It is anti-that the ends Y of silane coupling agent and the polymer of water-swellable carry out chemistry
Chemical bond, e.g. ,-NH should be formed2It is reacted with the carboxyl in the polymer of water-swellable and generates amide groups, epoxy group and water-swellable
Polymer in amino reaction generate the olefinic double bonds in the polymer of amide groups, (methyl) acryloxy and water-swellable
Carry out addition reaction.Therefore, the chemical reaction of the polymer three of proppant matrix, silane coupling agent and water-swellable, finally
Make the polymer of proppant matrix surface that there is good anti-shear ability.
2. it is provided by the invention from suspended prop more added with buoyancy, the suspension fluid of the smaller viscosity of use still can be with
It transports to target area, it is easier to be pumped into stratum.
3. without adding acetone, ethyl acetate, methyl acetate chlorine in the preparation process provided by the invention from suspended prop
Imitative, the organic solvents such as dimethylformamide, tetrahydrofuran, ethyl alcohol, the influence to personnel health, environmental injury is preferably minimized.
4. provided by the invention, from suspension fracturing propping agents, suspension time is long in clear water, can better meet pressure break
It needs.
5. provided by the invention can be good from the broken colloidality of suspension fracturing propping agents, breaking glue solution, which has, preferably prevents swollen performance, splits
Stitching refluence ability can be strong.
Specific implementation mode
The present invention provides a kind of preparation methods from suspended prop, include the following steps：
(1) by the proppant matrix of preheating and the mixed with polymers of water-swellable, mixture is obtained；
(2) under agitation, silane coupler solution is sprayed onto in the mixture that the step (1) obtains, 60
It reacts 3~4 hours, is obtained from suspended prop at a temperature of~80 DEG C.
The proppant matrix of preheating and the mixed with polymers of water-swellable are obtained mixture by the present invention.In the present invention,
The mass ratio of the polymer of the proppant matrix and water-swellable is preferably 1000:5~15, more preferably 1000:8~10.
In the present invention, the support substrate preheating can accelerate silane coupling agent in proppant surface reaction speed；
In the present invention, the preheating temperature of the proppant matrix is preferably 60~80 DEG C, more preferably 65~75 DEG C；The present invention is to described
The preheating method of proppant matrix does not have special restriction, using preheating method well known to those skilled in the art, at this
In inventive embodiments preferably by the way of heating.
In the present invention, the grain size of the polymer of the water-swellable is preferably 100~200 mesh, more preferably 150~
200 mesh, most preferably 180~200 mesh.
In the present invention, the polymer of the water-swellable preferably includes polyacrylamide, modified polyacrylamide, starch
Grafted propylene Barbiturates, graft acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose grafted propylene
One or more of amide, cross-linking type hydroxyethyl cellulose graft acrylamide polymer and poly- (methyl) acrylates mix
Close object, poly- more preferably poly- (methyl) the acrylic acid sylvite of (methyl) acrylates；When the polymer of the water-swellable is excellent
When choosing includes mixture, the present invention does not have special restriction to the mass ratio of each component in the mixture, using arbitrary quality
The mixture of ratio.
In the present invention, the grain size of the proppant matrix is preferably 16~70 mesh, more preferably 30~40 mesh.
In the present invention, the proppant matrix preferably includes quartz sand, bauxite, sintered bauxite, ceramics.
The present invention does not have special restriction to the source of the polymer of the proppant matrix and water-swellable, using ability
Commercial goods known to field technique personnel.
The present invention does not have the mode of the mixing special restriction, and use is well known to those skilled in the art, can incite somebody to action
The uniformly mixed mode of raw material；It is preferably mixed by the way of stirring in embodiments of the present invention.
The present invention without not special restriction, is used for the device of the mixing using well known to those skilled in the art
Mixed device；It is preferably mixed in rotating fluidized bed in embodiments of the present invention.
After obtaining mixture, under agitation, silane coupler solution is sprayed onto in the mixture by the present invention,
It reacts 3~4 hours, is obtained from suspended prop at a temperature of 60~80 DEG C.In the present invention, the spraying time is proppant base
Body mixes 3~4 times of required time under agitation.In the present invention, the sprinkling can make silane coupling agent while fill
Tap touches the polymer of proppant matrix and water-swellable, it is ensured that silane coupling agent respectively with proppant matrix and water-swellable
Polymer forms chemical bond.
In the present invention, in the silane coupler solution silane coupling agent preferably include KH470, KH530, KH550,
KH560, KH561, KH570 or KH792；The present invention does not have the source of the silane coupling agent special restriction, using ability
Commercial goods known to field technique personnel.
In the present invention, the silane coupler solution and the mass ratio of proppant matrix are preferably 1~5:100, it is more excellent
It is selected as 3:100；The mass fraction of the silane coupler solution is preferably 5~20%, and more preferably 10%.
In the present invention, the solvent of the silane coupler solution preferably includes water, organic alcohols solvent or inorganic alkaline
Aqueous solution；The organic alcohols solvent more preferably includes absolute ethyl alcohol, ethylene glycol；The inorganic alkaline aqueous solution is more preferably matter
Measure the sodium hydroxide solution that score is 10%.
The present invention does not have the mode of the mixing special restriction, and use is well known to those skilled in the art, can incite somebody to action
The mode that material after the completion of sprinkling is uniformly mixed；It is preferably mixed by the way of stirring in embodiments of the present invention
It closes.
In the present invention, the temperature of the reaction is 60~80 DEG C, preferably 65~75 DEG C, more preferably 70 DEG C；It is described
The time of reaction is 3~4 hours, more preferably 3.5 hours.In the present invention, in the reaction process, silane coupling agent one
End is hydrolyzable groups, hydrolyzes to form silanol Y-Si (OH)3, silanol and proppant matrix carry out condensation reaction and form siloxanes；
The other end of silane coupling agent is non-hydrolytic group, including alkenyl, and such as vinyl and end carry Cl, NH2, SH, epoxy
Base, N3, (methyl) acryloxy, the functional groups such as isocyanate group alkyl, it is anti-to carry out chemistry with the polymer of water-swellable
Chemical bond should be formed, the chemical reaction of the polymer three of proppant matrix, silane coupling agent and water-swellable finally makes support
The polymer of agent matrix surface has good anti-shear ability.
After the completion of the reaction, the material obtained after reaction is preferably cooled down and is sieved successively by the present invention, is obtained certainly
Suspended prop.The present invention does not have special restriction to the mode or rate of the cooling, using cooled to room temperature.
The present invention preferably obtains 16~70 purposes from suspended prop, more preferably 30~40 mesh by screening.Described in the present invention carries out
The purpose of screening is to remove the undesirable product of grain size, such as the polymer of responseless water-swellable or multiple glutinous
Proppant matrix together.
The present invention also provides preparation method described in above-mentioned technical proposal obtain from suspended prop.
The present invention provides a kind of preparation method from suspended prop, by the proppant matrix of preheating and water-swellable
Mixed with polymers obtains mixture, and under agitation, silane coupler solution is sprayed onto in mixture, and it is anti-that chemistry occurs
It answers, obtains from suspended prop.
The invention has the advantages that and good effect：
1. the present invention coats proppant matrix using the polymer of silane coupling agent and water-swellable, play
The effect of crosslinking agent, silane coupling agent are a kind of in the molecule while containing there are two types of the organosilicon compounds of different chemical property groups
Object, general formula YSiX3, X is hydrolyzable groups in formula, and the ends X hydrolyze to form silanol Y-Si (OH)3, silanol and proppant matrix into
Row condensation reaction forms siloxanes, i.e. silane coupling agent is attached with proppant matrix using siloxanes chemical bond；Y is non-aqueous
Group, including alkenyl are solved, such as vinyl and end carry Cl, NH2, SH, epoxy group, N3, it is (methyl) acryloxy, different
The alkyl of the functional groups such as cyanic acid ester group, i.e. carbon functional group；It is anti-that the ends Y of silane coupling agent and the polymer of water-swellable carry out chemistry
Chemical bond, e.g. ,-NH should be formed2It is reacted with the carboxyl in the polymer of water-swellable and generates amide groups, epoxy group and water-swellable
Polymer in amino reaction generate the olefinic double bonds in the polymer of amide groups, (methyl) acryloxy and water-swellable
Carry out addition reaction.Therefore, the chemical reaction of the polymer three of proppant matrix, silane coupling agent and water-swellable, finally
Make the polymer of proppant matrix surface that there is good anti-shear ability.
2. it is provided by the invention from suspended prop more added with buoyancy, the suspension fluid of the smaller viscosity of use still can be with
It transports to target area, it is easier to be pumped into stratum.
3. without adding acetone, ethyl acetate, methyl acetate chlorine in the preparation process provided by the invention from suspended prop
Imitative, the organic solvents such as dimethylformamide, tetrahydrofuran, ethyl alcohol, the influence to personnel health, environmental injury is preferably minimized.
4. provided by the invention, from suspension fracturing propping agents, suspension time is long in clear water, can better meet pressure break
It needs.
5. provided by the invention can be good from the broken colloidality of suspension fracturing propping agents, breaking glue solution, which has, preferably prevents swollen performance, splits
Stitching refluence ability can be strong.
It is described in detail from suspended prop and preparation method thereof to provided by the invention with reference to embodiment, but
It is that they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
1) it is proppant matrix to choose 16/20 mesh (i.e. by 16 mesh screens, cannot pass through 20 mesh screens) ceramic particle；Choosing
It is the polymer of water-swellable to take poly- (methyl) the acrylic acid sylvite of 100~200 purposes；Silane coupling agent KH550 is selected, distilled water is used
It is configured to 10% silane coupler solution.
2) the ceramic particle 1000g of 16/20 mesh is added in rotating fluidized bed, by ceramic particle heating to 60 DEG C, by 10g
Size is that poly- (methyl) the acrylic acid sylvite of 100 mesh is added in fluid bed, stirs evenly, obtains mixture；By 30g mass fractions
For 10% silane coupler solution in from fluid bed top spray to the mixture, it is sprayed after by ceramic particle, poly-
(methyl) acrylic acid sylvite and silane coupler solution stop stirring after being uniformly mixed, and in the environment of 60 DEG C, constant temperature is anti-
It answers 3 hours.Then cooled to room temperature sieve up to 16~70 purposes from suspended prop.
Example 1 prepare from suspended prop carry out different sand than, at a temperature of suspension time measure, as a result such as table
Shown in 1.As can be seen from Table 1, good from the suspendability of suspended prop, in 5% sand ratio, deposition time reaches
50 minutes；When sand ratio is more than 10%, suspends, do not settled completely from suspended prop.
1 embodiment 1 of table prepare from suspended prop difference sand than, at a temperature of suspension time
| Sand ratio (%) | Temperature (DEG C) | Suspension time (s) | Deposition time (s) |
| 5 | 20 | 67 | 3440 |
| 10 | 20 | 40 | 6000 |
| 15 | 20 | 32 | It does not settle |
| 20 | 20 | 26 | It does not settle |
| 30 | 20 | 19 | It does not settle |
| 5 | 60 | 34 | 3250 |
| 10 | 60 | 25 | 5760 |
| 15 | 60 | 18 | It does not settle |
| 20 | 60 | 13 | It does not settle |
| 30 | 60 | 8 | It does not settle |
Prepared by Example 1 carries out swelling multiple test, knot in identical sand ratio, different salinity water from suspended prop
Fruit is as shown in table 2, as can be seen from Table 2, from suspended prop distilled water, tap water, river water and 10000mg/L KCl salt
Expansion can be realized in water.
Prepared by 2 embodiment 1 of table is swollen multiple test from suspended prop difference salinity water
| Water source | Salinity (mg/L) | Sand ratio (%) | Expansion multiple f |
| Distilled water | 1.06 | 15 | 9.55 |
| Tap water | 79.8 | 15 | 6.8 |
| River water (duck river) | 88.4 | 15 | 6.4 |
| Prepare KCl water | 10000 | 15 | 2.6 |
Prepared by Example 1 tests being inhaled from suspended prop for different sand ratios from suspended prop at 25 DEG C and 50 DEG C
Solution is in 170s after water fully expands-1Viscosity, structure is as shown in table 3, as can be seen from Table 3, from suspended prop originally
Water medium viscosity is relatively low；In 40% sand ratio, viscosity is only 66mPas.
3 embodiment 1 of table prepare from suspended prop in 170s-1Viscosity
The test from suspended prop, 80 DEG C prepared by Example 1 should be from suspended prop in 10%~40% sand ratio
Under concentration, the breaking glue solution viscosity under different ammonium persulfate breaker concentrations, the results are shown in Table 4, as can be seen from Table 4, from
The broken glue of suspended prop is simple, and the ammonium persulfate of 250-500mg/L can meet broken glue requirement.
Breaking glue solution viscosity from suspended prop prepared by 4 embodiment 1 of table
| Water source | Sand ratio (%) | Gel breaker amount (mg/L) | Viscosity (mPa.s) |
| Tap water | 10 | 250 | 1.8 |
| Tap water | 10 | 350 | 1.6 |
| Tap water | 10 | 500 | 1.5 |
| Tap water | 20 | 250 | 2.5 |
| Tap water | 20 | 350 | 1.8 |
| Tap water | 20 | 500 | 1.7 |
| Tap water | 30 | 250 | 2.7 |
| Tap water | 30 | 350 | 2.2 |
| Tap water | 30 | 500 | 1.6 |
| Tap water | 40 | 250 | 3.0 |
| Tap water | 40 | 350 | 2.4 |
| Tap water | 40 | 500 | 2.0 |
Above-mentioned breaking glue solution is taken, according to《SY/T5762-1995 fracture acidizings clay stabilizer performance measurement method》, to broken
Glue carries out preventing swollen performance test, and the results are shown in Table 5, as can be seen from Table 5, has from suspended prop breaking glue solution good
Anti-dilative, anti-dilative can reach 66.7%.
Prepared by 5 embodiment 1 of table prevents swollen the performance test results from suspended prop
Embodiment 2
1) it is proppant matrix to choose 40/70 mesh (i.e. by 40 mesh screens, cannot pass through 70 mesh screens) quartz sand；It chooses
The cross-linked carboxymethyl cellulose graft acrylamide of 100~200 mesh is the polymer of water-swellable；Silane coupling agent KH570 is selected,
20% silane coupler solution is configured to distilled water.
2) the quartz sand 1000g of 40/70 mesh is added in rotating fluidized bed, quartz sand is heated to 80 DEG C, by 15g sizes
It is added in fluid bed for 200 mesh cross-linked carboxymethyl cellulose graft acrylamides, stirs evenly, obtain mixture；By 50g matter
Measure the silane coupler solution in from fluid bed top spray to the mixture that score is 5%, it is sprayed after by quartz sand,
Cross-linked carboxymethyl cellulose graft acrylamide and silane coupler solution stop stirring after being uniformly mixed, in 80 DEG C of ring
Under border, constant temperature 4 hours.Then it after natural cooling, is sieved to obtain the final product.
Example 1 and embodiment 2 are obtained from suspended prop, reference《SY/T 6302-2009 fracturing propping agents fill
The short-term flow conductivity of packing course evaluates recommendation method》, the fracture condudtiviy under different clossing pressures is measured, the results are shown in Table 6,
As can be seen from Table 6, the crack refluence ability from suspended prop under different clossing pressures is good, in the closure pressure of 69MPa
Under power, 40/70 purpose reaches 11Dc.cm from the flow conductivity of suspended prop.
6 Examples 1 and 2 of table prepare from the fracture condudtiviy under suspended prop difference clossing pressure
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method from suspended prop includes the following steps：
(1) by the proppant matrix of preheating and the mixed with polymers of water-swellable, mixture is obtained；
(2) under agitation, silane coupler solution is sprayed onto in the mixture that the step (1) obtains, 60~80
It reacts 3~4 hours, is obtained from suspended prop at a temperature of DEG C.
2. preparation method according to claim 1, which is characterized in that proppant matrix and water soluble in the step (1)
The mass ratio of swollen polymer is 1000:5~15.
3. preparation method according to claim 1, which is characterized in that the preheating temperature of proppant matrix in the step (1)
Degree is 60~80 DEG C.
4. preparation method according to claim 1, which is characterized in that the polymer packet of water-swellable in the step (1)
Include polyacrylamide, modified polyacrylamide, starch grafted acrylate Type of Collective object, modified propylene amide, carboxymethyl cellulose
Element, cross-linked carboxymethyl cellulose graft acrylamide, cross-linking type hydroxyethyl cellulose graft acrylamide polymer and poly- (first
Base) one or more of acrylates mixture.
5. preparation method according to claim 1 or 4, which is characterized in that the polymer of water-swellable in the step (1)
Grain size be 100~200 mesh.
6. preparation method according to claim 1, which is characterized in that proppant matrix includes quartz in the step (1)
Sand, bauxite, sintered bauxite, ceramics.
7. preparation method according to claim 1 or 6, which is characterized in that the grain size of proppant matrix in the step (1)
For 16~70 mesh.
8. preparation method according to claim 1, which is characterized in that in the step (2) in silane coupler solution
Silane coupling agent includes KH470, KH530, KH550, KH560, KH561, KH570 or KH792.
9. preparation method according to claim 1, which is characterized in that silane coupler solution and branch in the step (2)
The mass ratio for supportting agent matrix is 1~5:100；The mass fraction of the silane coupler solution is 5~20%.
10. preparation method as described in any one of claim 1 to 9 obtain from suspended prop.
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| CN109536158B (en) * | 2017-09-21 | 2021-11-26 | 中国石油化工股份有限公司 | Low-density ceramsite proppant and preparation method thereof |
| CN107586539A (en) * | 2017-10-30 | 2018-01-16 | 中国石油集团渤海钻探工程有限公司 | Variable density thickens proppant and preparation method thereof certainly |
| CN111961460B (en) * | 2020-09-22 | 2021-08-03 | 西南石油大学 | High-efficiency energy-saving bridge channel fully-coupled fiber proppant system and application method thereof |
| CN113755154A (en) * | 2021-10-29 | 2021-12-07 | 江苏臻诚能源科技有限公司 | Preparation method of full-crack propping agent |
| CN116814237B (en) * | 2023-05-12 | 2024-08-23 | 北京仁创科技集团有限公司 | Multifunctional composite propping agent and preparation method thereof |
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| AU2013249741A1 (en) * | 2012-04-19 | 2014-11-06 | Self-Suspending Proppant Llc | Self-suspending proppants for hydraulic fracturing |
| CN104946234A (en) * | 2014-03-28 | 2015-09-30 | 北京仁创科技集团有限公司 | Self-suspended propping agent and preparation method thereof |
| CN107532078A (en) * | 2015-04-08 | 2018-01-02 | 自悬浮支撑有限公司 | Resistance to hard water and salt solution from suspended prop |
| US9862881B2 (en) * | 2015-05-13 | 2018-01-09 | Preferred Technology, Llc | Hydrophobic coating of particulates for enhanced well productivity |
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