CN109021960A - From suspended prop - Google Patents
From suspended prop Download PDFInfo
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- CN109021960A CN109021960A CN201811159641.6A CN201811159641A CN109021960A CN 109021960 A CN109021960 A CN 109021960A CN 201811159641 A CN201811159641 A CN 201811159641A CN 109021960 A CN109021960 A CN 109021960A
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- resin
- layer
- suspended prop
- proppant
- polyalcohols
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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
- C09K8/805—Coated proppants
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to specifically disclose one kind from suspended prop, including aggregate and for the resin layer of package aggregate for drilling or the mixture field of drilling well；The resin layer is divided into inner resin layer and outer resin layer, the outer resin layer includes polyurethane resin and amines additives, the inner resin layer is synthesized by internal layer synthetic material, and the internal layer synthetic material includes inner layer resin, and the inner layer resin is the mixture of epoxy resin and phenolic resin.The proppant can suspend naturally in clear water, while the pressure break index for meeting conventional proppants, do not need to add any thickener in fracturing process, reduce pressure break cost, simplify fracturing technology, reduce the pollution to environment.
Description
Technical field
The present invention relates to for drilling or the mixture field of drilling well, and in particular to a kind of from suspended prop.
Background technique
Hydraulic fracturing is the well production increment measure having wide application prospects, and hydrofracturing method is that current exploitation is natural
The principal mode of gas, it is desirable that pour into rammell with the water of a large amount of incorporation chemical substances and carry out hydraulic fragmentation to discharge natural gas.
Hydraulic fracturing technology at home and abroad comparative maturity, petroleum fracturing propping agent must can not as fracturing process China
One of few article, performance superiority and inferiority will directly influence fracturing effect, and apparent density is the important of evaluation proppant performance
One of index, apparent density is lower, and it is lower relative to the relative density of fracturing fluid, after proppant, which carries liquid with pressure break, to be mixed,
The lower apparent density the easier to suspend in fracturing fluid, to greatly reduce reduction of speed rate, will pump farther in pumping procedure.
High pumping pressure pumps fluid into well, while rock stratum of splitting is to allow hydrocarbons preferably to pass through.However, removing non-pressure
It keeps, the aperture otherwise newly formed is closed.In order to open and keep path, support is injected simultaneously during pumping fluid
Agent, support needed for keeping aperture with generation.When forming crack, biography when proppant passes through release hydraulic pressure in the slurry
It passs, proppant forms the filling or support for staying open crack herein.It is general in order to make proppant enter rock stratum with fluid
Method be that these particles suspend in a fluid.
Country's fracturing technology also has part to prepare proppant using coating technique at present, and one layer is generally all only covered in overlay film
Film, in overlay film, resin used is mostly epoxy resin or phenolic resin.Also there is part proppant using two layers of coating technique, inside
After layer epoxy resin or coating phenolic resin, then in outer layer polyurethane resin overlay film.Polyurethane resin is one great
System is to be reacted to be formed with hydroxyl by isocyanate group.
The effect for being currently used for the polyurethane resin of proppant overlay film is to improve the hardness of proppant and reduce proppant
Percentage of damage, but this proppant only meets the requirement of intensity and hardness, still cannot be from suspending.It is still needed when construction
It prepares the carrying liquid with toughness again, carries the chemical gel substance contained in liquid, there is injury to subsurface reservoir and can be right
Environment pollutes, while increasing use cost.
Summary of the invention
The purpose of the present invention is to provide one kind from suspended prop, which can suspend naturally in clear water, full
While the pressure break index of sufficient conventional proppants, do not need to add any thickener in fracturing process, reduce pressure break at
This, simplifies fracturing technology, reduces the pollution to environment.
In order to achieve the above objectives, base case of the invention is as follows: from suspended prop, including aggregate and for wrapping up bone
The resin layer of material；The resin layer is divided into inner resin layer and outer resin layer, and the outer resin layer includes polyurethane resin and amine
Additive, the inner resin layer are synthesized by internal layer synthetic material, and the internal layer synthetic material includes inner layer resin, the internal layer tree
Rouge is the mixture of epoxy resin and phenolic resin.
Using having the beneficial effect that for this base case:
1. using two layers of overlay film in this programme, polyurethane resin and amines additives are used in outer film coating, in overlay film
Polyurethane resin can produce nanoscale protrusion in the process, and protrusion extends in the surface of proppant particles, and protrusion will increase branch
The buoyancy of agent is supportted, while when proppant and water contact, a kind of reserved group in surface can react rapidly with water to be released largely
Gas molecules, these gas molecules or are enclosed in resin film to expand against resin membrane body stage and thicken and increase support
The equivalent diameter of agent granule, or be attached to the extension of proppant surface stage or be gathered in proppant resin film and contacted with water body
Interface on formed one layer package proppant particles body gas blanket, this gas blanket formation stages between proppant particles body
It is connected to and the result closed causes simple grain proppant to form more loose cotton-wool in water body to gather shape, be greatly lowered in this way
The relative density of proppant in water, so as to make proppant suspend in water.When proppant moves in water, proppant
Protrusion on resin film can reduce the proppant rate of settling in water；Part is settled down to the proppant of water bottom accumulation because of its tree
The more protrusion in adipose membrane surface reduces the degree of packing of proppant particles stack layer, the more conventional granulation mass of intergranular water body amount
Product body is more, and then when water body can more easily push its congeries to separate and mobile the fluidity with very little, real
Existing proppant preferably suspends in water.
2. outermost resin generates nano grade air bubbles and can improve the percentage of damage of outermost resin, therefore uses in this programme to aggregate
Overlay film twice, outermost resin ensures that the proppant can suspend, and inner layer resin can guarantee the resistant to breakage rate of the proppant.
3. the proppant in this programme is when in use, pre- in macromolecule in polyurethane resin when outermost resin and water contact
The group and water stayed, which reacts rapidly, generates a large amount of gas molecules, these gas molecules are attached to the surface of proppant particles
The gas wrapping hydrated sheath of micro/nano level is formed, while the resin membrane swelling on surface can be caused, and amines additives can increase
The reactivity of polyurethane resin and water improves the suspension effect of proppant.
4. the proppant in this programme can suspend in clear water, without changing the density of water, tradition is replaced to press with clear water
Split liquid, realize zero addition of thickener and drag reducer in fracturing work, so save conventional pressure break with liquid process and equipment, together
When, the removal of thickener also reduces injury and pressure break cost of the pressure break to reservoir.
5. the film of epoxy resin preparation is tough in the present solution, inner layer resin uses the mixture of epoxy resin and phenolic resin
Property it is good, the film of phenolic resin preparation is more crisp, and epoxy resin and phenolic resin combined use can allow the existing rigidity of film, and has tough
Property, and cost is relatively low.
Further, the outer resin layer is synthesized by outer layer synthetic material, and the outer layer synthetic material includes polyalcohols tree
Rouge, isocyanate resin, amines additives and catalyst, wherein the hydroxyl equivalent of polyalcohols resin is 60-300, isocyanic acid
The quality of ester resin is the 2/5-4/5 of polyalcohols resin quality.Inventor by many experiments find, polyalcohols resin and
When the amount of isocyanate resin is controlled within the above range, the polyurethane resin of synthesis and the performance of existing polyurethane resin
It is different.Because polyalcohols resin and isocyanate resin can react the polyurethane resin for generating and having micro protrusion,
Amines additives are added again, catalytic action can be played to polyalcohols resin and isocyanate resin reaction, be made polyurethane tree
A large amount of mutually isolated bubbles are generated inside rouge.Because bubble is located inside polyurethane resin, bubble is in polyurethane resin
Surface will form a large amount of protrusion, these bump sizes between 100-500nm, protrusion in proppant surface random distribution,
Protrusion finds to be light highlighted or white curved body on refreshing dark-coloured resin membrane body in surface sweeping electricity microscopic observation, in single particle
The surface resin film of body has the random distribution of heterogencity, then calculates as the surface of every 100 square micron under homogeneous distribution state
With 40 or so protrusions, it is improved from suspendability.In addition, the hydroxyl equivalent of polyalcohols resin is 60-300, isocyanide
The quality of acid ester resin is the 2/5-4/5 of polyalcohols resin；On the one hand the isocyanate resin of above-mentioned mass number can with it is complete
After portion's polyalcohols resin reaction generates polyurethane resin, it is also reserved with a certain amount of isocyanate-reactive group, works as residue
Isocyanate groups meet water after, reacted with water and gas can be generated in the microcosmic small space body that the chain element of resin film surrounds
Body, gradually overall volume forms bubble to this small quantity gas under the promotion of reaction energy, and pushes resin film in proppant
The radial dimension of grain increases, and reaches the dilation of outer resin layer surface most preferably, to further decrease the apparent density of proppant
And volume density, when the amount of another aspect isocyanate resin is excessive, the bubble volume generated can be made too big and be easy breakage, or
The quantity of bubble, which makes to contact with each other between bubble too much, leads to the strength reduction of bubble.So the amount control of isocyanate resin exists
In above range, it can not only guarantee the suspension effect of proppant, but also can guarantee the intensity of proppant.
Further, the internal layer synthetic material further includes curing agent.Increasing curing agent in layer synthetic material inside can mention
The overlay film effect of high inner layer resin.
Further, the mass fraction of above-mentioned material is as follows: the mass fraction of above-mentioned material is as follows: 80-120 parts of aggregate, interior
Layer 0.25-5 part of resin, polyalcohols resin mass fraction be 0.15-3.2 parts；The amount of curing agent accounts for the amount of inner layer resin
, wherein polyalcohols resin and isocyanate resin synthesis of polyurethane resin；The amount of catalyst is polyurethane resin
1/1000-1/100, the amounts of amines additives is the 1/100-1/5 of polyurethane resin.Inventor has found through test of many times, adopts
And resistant to breakage rate height not only good from suspension effect with the proppant of the raw material preparation of above-mentioned mass fraction.
Further, the aggregate is quartz sand or haydite.At low cost using the proppant that quartz sand is aggregate production, acid is molten
Xie Du is low, and haydite sphericity is good, and intensity is big, and water conservancy diversion is good.And with haydite it is the proppant of aggregate production, sphericity is good, corrosion-resistant, resistance to
High temperature, it is high pressure resistant.
Further, in inner layer resin, the mass ratio of the epoxy resin and phenolic resin is 5-8:2.Inventor is through multiple
Test discovery, the proppant that epoxy resin and phenolic resin are mixed with according to the above ratio, cost is relatively low and resistant to breakage rate is high.
Further, the curing agent is fatty amine and aromatic amine, acid anhydride type curing agent, amides curing agent, six methines
Or mixtures thereof one of tetramine.Inventor is by test of many times discovery, the support for using above-mentioned raw materials to make for curing agent
Agent suspension effect is more preferable and cost is relatively low.
Further, the amines additives are diethylenetriamine, triethylamine, ethamine, ethylenediamine, one in triethylene tetramine
Kind is several.Inventor uses above-mentioned aminated compounds to suspend for the proppant that amines additives make through test of many times discovery
Effect is more preferable and cost is relatively low.
Further, the mixture of one or more of catalyst alkyls tin compound and/or alkyls lead compound.
Inventor has found through test of many times, can accelerate the solidification rate of outer resin layer as catalyst using above-mentioned substance and promote it by force
Degree.
Detailed description of the invention
Fig. 1 is the electron-microscope scanning figure from suspended prop of embodiment 1.
Specific embodiment
Raw material selection is illustrated below, and the present invention is described in further detail by specific embodiment:
In the present embodiment from suspended prop include following material: aggregate, inner layer resin, curing agent, polyalcohols tree
Rouge, isocyanate resin, amines additives and catalyst；The mass fraction of each material is as follows: 80-120 parts of aggregate, inner layer resin
0.25-5 parts；The mass fraction of polyalcohols resin is 0.15-3.2 parts；The amount of isocyanate resin is polyalcohols resin
2/5-4/5；The amount of curing agent accounts for the 1/10-1/2 of the amount of inner layer resin, and the amount of catalyst is the 1/1000-1/ of polyurethane resin
100, the amount of amines additives is the 1/100-1/5 of polyurethane resin, and wherein polyurethane resin is by polyalcohols resin and isocyanide
Acid ester resin synthesis.
In above-mentioned material, inner layer resin is the mixture of phenolic resin and epoxy resin, wherein epoxy resin and phenolic aldehyde tree
The mass ratio of rouge is 5-8:2.
Curing agent is fatty amine and aromatic amine, one of acid anhydride type curing agent, amides curing agent, hexamethylenetetramine
Or mixtures thereof, preferably T31,113D or hexa.
Amines additives are one of diethylenetriamine, triethylamine, ethamine, ethylenediamine, triethylene tetramine or several.
Catalyst is one of dibutyl tin dilaurate, tributyl tin, lead tetraethide, isooctyl acid lead or several.
The hydroxyl equivalent of polyalcohols resin is 60-300.
Included the following steps: with above-mentioned material preparation from the technical process of suspended prop
(1) prepare following material: 40/70 mesh quartz sand, polyalcohols resin, inner layer resin, curing agent, isocyanates tree
Rouge, catalyst and amines additives；
(2) it heats: the quartz sand in step (1) is heated to 180-230 DEG C；
(3) mulling: the quartz sand in step (2) is added in mulling pot with the revolving speed mulling of 70-100 turns/min；
(4) first time overlay film: the inner layer resin in step (1) is added in mulling pot；It is down to mulling pot temperature
The curing agent in step (1) is added at 150-200 DEG C；
(5) second of overlay film: polyalcohols resin and catalyst are added when the temperature of mulling pot is down to 80-130 DEG C；
Amines additives are added at 70-110 DEG C；Isocyanate resin is added at 60-100 DEG C；
(6) it shakes out: shaking out at 40-70 DEG C.
It using the above method, is made respectively of the material of different ratio from suspended prop, obtains embodiment 1-6, it is different
The specific mass fraction of each material is as shown in table 1 in embodiment:
Table 1
Comparative example 1
A kind of preparation method from suspended prop, includes the following steps:
(1) prepare following material: 40,/70 80 parts of mesh quartz sand, 0.25 part of inner layer resin, inner layer resin curing agent 0.15
Part, 0.25 part of outermost resin and 0.15 part of outermost resin curing agent, wherein outermost resin is phenolic resin or epoxy resin, internal layer
Resin is the mixture of epoxy resin and phenolic resin；
(2) it heats: the quartz sand in step (1) is heated to 180-230 DEG C；
(3) mulling: the quartz sand in step (2) is added in mulling pot with the revolving speed mulling of 70-100 turns/min；
(4) first time overlay film: the inner layer resin in step (1) is added in mulling pot；It is down to mulling pot temperature
The inner layer resin curing agent in step (1) is added at 150-200 DEG C；
(5) second of overlay film:: outermost resin is added when the temperature of mulling pot is down to 80-130 DEG C；Temperature to mulling pot
Outermost resin curing agent is added when being down to 60-100 DEG C in degree；
(6) it shakes out: shaking out at 40-70 DEG C.
Comparative example 2
A kind of preparation method from suspended prop, includes the following steps:
(1) prepare following material: 40,/70 80 parts of mesh quartz sand, 0.15 part of polyalcohols resin, 0.25 part of inner layer resin,
0.15 part of curing agent, 0.09 part of isocyanate resin and 0.005 part of catalyst；Inner layer resin is epoxy resin and phenolic resin
Mixture；
(2) it heats: the quartz sand in step (1) is heated to 180-230 DEG C；
(3) mulling: the quartz sand in step (2) is added in mulling pot with the revolving speed mulling of 70-100 turns/min；
(4) first time overlay film: the inner layer resin in step (1) is added in mulling pot；It is down to mulling pot temperature
The curing agent in step (1) is added at 150-200 DEG C；
(5) second of overlay film: polyalcohols resin and catalyst are added when the temperature of mulling pot is down to 80-130 DEG C；
Isocyanate resin is added at 60-100 DEG C；
(6) it shakes out: shaking out at 40-70 DEG C.
Comparative example 3
A kind of preparation method from suspended prop, includes the following steps:
(1) prepare following material: 40,/70 80 parts of mesh quartz sand, 0.15 part of polyalcohols resin, 0.25 part of inner layer resin,
0.15 part of curing agent, 0.045 part of isocyanate resin, 0.005 part of catalyst and 0.05 part of amines additives；Wherein polyalcohols
The hydroxyl equivalent of resin is 60-300；Inner layer resin is the mixture of epoxy resin and phenolic resin；
(2) it heats: the quartz sand in step (1) is heated to 180-230 DEG C；
(3) mulling: the quartz sand in step (2) is added in mulling pot with the revolving speed mulling of 70-100 turns/min；
(4) first time overlay film: the inner layer resin in step (1) is added in mulling pot；It is down to mulling pot temperature
The curing agent in step (1) is added at 150-200 DEG C；
(5) second of overlay film:: polyalcohols resin and catalyst are added when the temperature of mulling pot is down to 80-130 DEG C；
Amines additives are added at 70-110 DEG C；Isocyanate resin is added at 60-100 DEG C；
(6) it shakes out: shaking out at 40-70 DEG C.
Comparative example 4
A kind of preparation method from suspended prop, includes the following steps:
(1) prepare following material: 40,/70 80 parts of mesh quartz sand, 0.15 part of polyalcohols resin, 0.25 part of inner layer resin,
0.15 part of curing agent, 0.13 part of isocyanate resin, 0.005 part of catalyst and 0.05 part of amines additives；Wherein polyalcohols
The hydroxyl equivalent of resin is 60-300；Inner layer resin is the mixture of epoxy resin and phenolic resin；
(2) it heats: the quartz sand in step (1) is heated to 180-230 DEG C；
(3) mulling: the quartz sand in step (2) is added in mulling pot with the revolving speed mulling of 70-100 turns/min；
(4) first time overlay film: the inner layer resin in step (1) is added in mulling pot；It is down to mulling pot temperature
The curing agent in step (1) is added at 150-200 DEG C；
(5) second of overlay film:: polyalcohols resin and catalyst are added when the temperature of mulling pot is down to 80-130 DEG C；
Amines additives are added at 70-110 DEG C；Isocyanate resin is added at 60-100 DEG C；
(6) it shakes out: shaking out at 40-70 DEG C.
The performance of proppant made from above-described embodiment and comparative example is tested respectively, the performance of the proppant measured
Index is as follows:
1. suspension time
Suspension time refers to that the maximum duration that can freely suspend in water, experimental data are as shown in table 2:
Table 2
Come as can be seen from Table 2, is all made of polyalcohols resin and isocyanates tree in embodiment 1-6 and comparative example 2
Rouge can be with compared with the proppant that comparative example 1 does not use polyalcohols resin and isocyanate resin to prepare the proppant for preparing
It obtains, the proppant prepared using polyalcohols resin and isocyanate resin can be in clear water from suspension；Embodiment 1-6
Compared with comparative example 2 it can be concluded that, the proppant suspension time prepared after amines additives is added during the preparation process and is both greater than 4
Hour, can fully meet deep-well pressure break requirement, and be not added with amines additives preparation proppant then suspension time is shorter.It is real
A 1-6 and the comparison of comparative example 3 are applied as can be seen that when the amount of isocyanate resin is less, the proppant suspension time of preparation is remote
Much smaller than 4 hours, and when the amount of the isocyanates of addition is more, the proppant of preparation is also small well below 4 from suspension time
When.
2. suspension ratio
It suspends than being to evaluate proppant suspension amount in upper layer accounts for the percentage of total proppant in water, our uses in test
Sand: the case where water is 4:1 is evaluated.Experimental method is to measure 200ml water in the wide-mouth bottle of 300ml with graduated cylinder and pour into extensively
In mouth bottle, precise 50g proppant is poured into the wide-mouth bottle for having filled water, is closed the lid, up and down firmly shake 30 times, and static 10
After minute, firmly shakes 30 times up and down after the same method, the sand of the suspension on upper layer is filtered out after static with filter paper, after drying
The weight for weighing the sand filtered out is m, suspension amount X=m/50*100%.It is as shown in table 3:
Table 3
It can be seen that come from the data in table 3, when static, the riverfrac treatment that embodiment 1-6 is prepared is supported
Agent has a certain amount of proppant that left floating on upper layer；And in comparative example 1-2, due to proppant generate number of bubbles not
It meets the requirements, when static, proppant that upper layer not left floating.
3. other conventional indexs:
Other conventional indexs are as shown in table 4:
Table 4
It can be seen that, even better than existing pressure break branch can be reached from suspended prop in this programme from table 2 to table 4
The indices of agent are supportted, and realize riverfrac treatment, using clear water as fracturing fluid, reduce the configuration process of fracturing fluid complexity,
Equipment has been simplified, manpower waste is reduced, it is most important that has also reduced the pollution to environment.
By embodiment 1 and the comparison of comparative example 1 and comparative example 2 it is found that not using polyalcohols resin and isocyanide in outer layer
When acid ester resin or outer layer use polyalcohols resin or isocyanate resin but are not added with amines additives, the support of preparation
Agent cannot be from suspension or suspension time well below 4 hours in clear water, cannot in the case where not adding other carrying liquid
Meet pressure break demand.
By embodiment 1 and the comparison of comparative example 3 and comparative example 4 it is found that the amount of isocyanate resin is very few cannot to generate needs
The bubble of quantity cannot generate bubble, and isocyanate resin dosage is excessive, and the volume of bubble can be made excessive, causes
Bubble is easy to rupture, and finally proppant suspendability can be made weak, cannot suspended in clear water.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (9)
1. from suspended prop, including aggregate and for the resin layer of package aggregate；It is characterized by: in the resin layer is divided into
Resin layer and outer resin layer, the outer resin layer include polyurethane resin and amines additives, and the inner resin layer is by interior laminated
At materials synthesis, the internal layer synthetic material includes inner layer resin, and the inner layer resin is the mixed of epoxy resin and phenolic resin
Close object.
2. according to claim 1 from suspended prop, it is characterised in that: the outer resin layer is closed by outer layer synthetic material
At the outer layer synthetic material includes polyalcohols resin, isocyanate resin, amines additives and catalyst, wherein polynary
The hydroxyl equivalent of alcohol resinoid is 60-300, and the quality of isocyanate resin is the 2/5-4/5 of polyalcohols resin quality.
3. according to claim 2 from suspended prop, it is characterised in that: the internal layer synthetic material further includes solidification
Agent.
4. according to claim 3 from suspended prop, which is characterized in that the mass fraction of above-mentioned material is as follows: aggregate
80-120 parts, 0.25-5 parts of inner layer resin, polyalcohols resin mass fraction be 0.15-3.2 parts；The amount of curing agent accounts for internal layer
The 1/10-1/2 of the amount of resin, wherein polyalcohols resin and isocyanate resin synthesis of polyurethane resin；The amount of catalyst is
The 1/1000-1/100 of polyurethane resin, the amount of amines additives are the 1/100-1/5 of polyurethane resin.
5. according to claim 1 or 4 from suspended prop, it is characterised in that: the aggregate is quartz sand or haydite.
6. according to claim 4 from suspended prop, it is characterised in that: in inner layer resin, the epoxy resin and phenol
The mass ratio of urea formaldehyde is 5-8:2.
7. according to claim 6 from suspended prop, it is characterised in that: the curing agent be fatty amine and aromatic amine,
Or mixtures thereof one of acid anhydride type curing agent, amides curing agent, hexamethylenetetramine.
8. from suspended prop according to claim 2 or 4 or 7, it is characterised in that: the amines additives are divinyl
One of triamine, triethylamine, ethamine, ethylenediamine, triethylene tetramine are several.
9. according to claim 4 from suspended prop, it is characterised in that: the catalyst alkyls tin compound and/
Or the mixture of one or more of alkyls lead compound.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880232A (en) * | 2020-07-06 | 2020-11-03 | 中国石油天然气股份有限公司 | Magnetic nano-film imaging proppant and preparation method and application thereof |
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Application publication date: 20181218 |