CN104250430B - A kind of P25 nano-powders epoxy resin seismic physical model material and preparation method - Google Patents
A kind of P25 nano-powders epoxy resin seismic physical model material and preparation method Download PDFInfo
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- CN104250430B CN104250430B CN201310258468.6A CN201310258468A CN104250430B CN 104250430 B CN104250430 B CN 104250430B CN 201310258468 A CN201310258468 A CN 201310258468A CN 104250430 B CN104250430 B CN 104250430B
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Abstract
The invention discloses a kind of P25 nano-powders epoxy resin seismic physical model material and preparation method.The cast material includes the following components after solidification：The weight portion of epoxy resin 100；The weight portion of 650 type curing agent 80 100；The weight portion of P25 nano powders 1 10.Methods described includes：The component is by prepared described seismic physical model material after consumption solidification.The present invention ratio shared in the epoxy by changing P25 nano powders, can be obtained the acoustic wave propagation velocity respectively seismic physical model material of 2557m/s 2901m/s.Hardening time is shortened, the efficiency for preparing seismic physical model is effectively raised, and seismic physical model material of the invention has penetrability higher, effectively raises acoustic wave propagation velocity, is that the making of seismic physical large-sized model is laid a good foundation.
Description
Technical field
The present invention relates to seismic physical model field, furtherly, it is related to a kind of P25 nano-powders epoxy resin ground
Shake physical model material and preparation method.
Background technology
With deepening continuously that petroleum natural gas exploration works, the exploration object and development environment for being faced are more next
More complicated, difficulties in exploration is also increasing.Seismic method is faced with complex oil and gas reservoir, lithologic deposit and fractured hydrocarbon reservoir
Exploration and find " remaining oil " arduous and the task of complexity.Physical model analogue technique is the crucial skill of geophysical research
One of art, is important " assistant " for being engaged in theoretical question research.
Seismic physical modeling technology is in the lab, signal to be excited and received by ultrasonic transducer, so as to utilize
Ultrasonic wave simulation field seismic wave, obtains earthquake simulation data volume, in the lab by seismic physical model, discloses seismic wave
Propagation law in complicated structure.Cast material analogue technique is the basis of forward physical model simulation, domestic at present major
Institutes and colleges and universities mainly with the method for asphalt mixtures modified by epoxy resin moulding by casting, according to high speed stratum needs, prepare velocity of wave 2600m/s's
Material, but epoxide resin material has the following disadvantages：
During one is existing formula, epoxy curing agent typically uses 650 types, because 650 type curing agent activity are low, solidification
Speed is slow, so in model casting process, hardening time is more long, the serious efficiency that have impact on molding.
During two are existing formula, the model highest velocity of wave prepared reaches 2600m/s, it is impossible to enough simulate the need of actual formation
Ask, it is unfavorable to making complicated structure model.
The content of the invention
To solve produced problem in the prior art, the invention provides a kind of P25 nano-powders epoxy resin earthquake
Physical model material and preparation method.Hardening time is shortened, the efficiency for preparing seismic physical model is effectively raised, and
New material has penetrability higher, effectively raises acoustic wave propagation velocity, is that the making of seismic physical large-sized model is established
Basis.
An object of the present invention is to provide a kind of P25 nano-powders epoxy resin seismic physical model material.
Including the following components for solidifying：
The weight portion of epoxy resin 100
650 type curing agent 80-100 weight portions
P25 nano powder 1-10 weight portions, preferably 5-6 weight portions.
The epoxy resin preferred viscosities 11000-14000mPas scopes epoxy resin, more preferably E-51 types epoxy
Resin.
650 type curing agent：Molecular weight 1000~1500, light yellow glutinous thick liquid, density (75 DEG C) 0.92~0.96g/
cm³.230~260mg of amine value KOH/g.(75 DEG C of viscosity）3000~1000mPas.Versamid composition is more multiple
It is miscellaneous, containing primary amine, secondary amine and amide groups, can cured epoxy resin at room temperature.
P25 nano powders：The mixture of anatase-type nanometer titanium dioxide and rutile type nano titanic oxide, the two ratio
About 80:20, average grain diameter is about 21nm.
Seismic physical model experiment is according to 1 in laboratory by the geological structure and geologic body in field:10000 equal proportions
Diminution is fabricated to geological model, and carries out forward simulation to field method of seismic prospecting with methods such as ultrasonic wave or laser ultrasonics
A kind of earthquake simulation method, by special seismic physical model Preparation equipment and the seismic physical mould of preparation technology synthesizing new
Section bar material, seismic physical model is built using similarity principle, and actual physical model is approached by setting up to compare, and is explored and is recognized
The propagation law of seismic wave in complicated structure and fracture cave reservoir is known, for oil-gas exploration and development provides favourable foundation, while being the present
The making of physical model afterwards is laid a good foundation.
The investment of seismic physical model experimental study is small, and compared with Mathematical Modeling, its biggest advantage is exactly seismic physical mould
The authenticity of type analog result, is not limited by computational methods, assumed condition, thus seismic physical model is subject to domestic and international each stone
Oily company and the great attention of university.Application of the seismic physical model experiment in oil and gas exploration, exploitation is more and more wider
It is general.It is natural in the oil such as theory of earthquake wave research and complicated structure, slit band detection, crosshole seismic research and deposit dynamic monitoring
Played an important role in gas exploration, development
After pure epoxy resin solidification, the acoustic wave propagation velocity of material is 2600m/s, by P25 nano powder doping vario-property rings
Oxygen tree fat, is the effective ways for improving epoxide resin material velocity of wave, and because 650 type curing agent activity are relatively low, curing rate
Slowly, so in model casting process, hardening time is more long, the serious efficiency that have impact on molding.Adulterated by P25 nano powders
Modified epoxy seismic physical model, hardening time shortens, and the SVEL of material is increased substantially, and is seismic physical
Ideal material prepared by model, first P25 nano powders materials application to seismic physical model Material Field, P25 receives the present invention
Ground rice can uniformly disperse in the epoxy, will not produce the phenomenon of reunion, use 650 type curing agent, participate in and mix
Miscellaneous material modified chemical reaction, the material prepared has good penetrability.Due to choosing P25 nano powders, when P25 nanometers
Powder is after doping ratio reaches 5% in the epoxy, i.e. epoxy resin, and the speed of material reaches maximum 2901m/s, continues to increase
Plus after the doping ratio of P25 nano powders, the speed of material is reduced on the contrary.
The second object of the present invention is to provide a kind of preparation of P25 nano-powders epoxy resin seismic physical model material
Method.
Including：
The component is by prepared described seismic physical model material after consumption solidification.
Curing can use the common curing in this area, preferably carry out according to the following steps in the present invention：
1. pretreatment
According to the demand of model materials, a certain amount of epoxy resin E51 is placed in 50 DEG C of 1 hours of preheating of baking oven, then
Taking-up vacuumize 30 minutes it is standby.
2. mould pretreatment
After mould is made, one layer of release materials are applied in mould inner surface, it is general to use silicon rubber as release coating,
Deng casting mold again after silicon rubber glue fixed.
3. material configuration
Material is weighed by recipe requirements after processing, 650 type curing agent and P25 nano powders is carried out into uniform stirring first,
Then addition epoxy resin makes it stir wherein.
4. cast model is vacuumized
After material is prepared and stirred, vacuumize process 10 minutes is subsequently poured into packaged mould, when its solidification
It is collapsible die after completely.
The present invention passes through P25 nano powder doping vario-property epoxy resin, from 650 relatively low type curing agent of activity, by changing
Become P25 nano powders ratio shared in the epoxy different, the sample prepared by P25 nano powder doping vario-properties epoxy resin
Acoustic wave propagation velocity increases than pure epoxy resin, and acoustic wave propagation velocity is respectively the seismic physical of 2557m/s-2901m/s
Cast material.
The effect of invention
New material SVEL after 1.P25 nano powder doping vario-properties increases, and highest velocity of wave reaches 2901m/s.
New material after 2.P25 nano powder doping vario-properties has good penetrability, and highest can reach 420mv.
New material hardening time after 3.P25 nano powder doping vario-properties shortens, effective to improve seismic physical model system
Standby speed.
Brief description of the drawings
The seismic physical model material velocity figure of Fig. 1 embodiments and comparative example
The acoustic wave propagation velocity of the seismic physical model material of Fig. 2 embodiments and comparative example and the graph of a relation of amplitude
The different speed of the seismic physical model material of Fig. 3 embodiments and comparative example and the graph of a relation of curing time
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment is raw materials used：
Epoxy resin E51：Phoenix brand E51 epoxy resin, trade mark WRS618, place of production jiangsu wuxi；Viscosity is in 12000-
15000mPas.
650 type curing agent：Changzhou scape China hot oil pump casting manufacture curing agent, the trade mark 650；Place of production changzhou.
P25 nano powders：The ratio of nanometer anatase titania and rutile type nano titanic oxide is about 80:20, base
This grain diameter is about 21nm.Place of production producer of Germany Degussa
Embodiment 1~7：
1 pretreatment
According to the demand of model materials, a certain amount of epoxy resin E51 is placed in 50 DEG C of 1 hours of preheating of baking oven, then
Taking-up vacuumize 30 minutes it is standby.
2 moulds are pre-processed
After mould is made, one layer of release materials are applied in mould inner surface, it is general to use silicon rubber as release coating,
Deng casting mold again after silicon rubber glue fixed.
3 materials are configured
Material is weighed by recipe requirements after processing, 650 type curing agent and P25 nano powders is carried out into uniform stirring first,
Then addition epoxy resin makes it stir wherein.
4 vacuumize cast model
After material is prepared and stirred, vacuumize process 10 minutes is subsequently poured into packaged mould, when its solidification
It is collapsible die after completely.
The formula of each embodiment is shown in Table 1.
Table 1（Consumption is in parts by weight）
Comparative example：
It is the seismic physical model material made without the epoxy resin of P25 nano-powders.Formula is shown in Table 1.
Comparative example uses pure epoxy resin, curing agent to use 650 type curing agent of high activity, and hardening time is long, influence ground
Shake physical model preparation efficiency.
To improve velocity of wave formula, curing agent still selects 650 relatively low type curing agent of activity to embodiment 1~7, due to taking
P25 nano powders doping vario-property is formulated so that hardening time shortens, and the effective seismic physical model that improves prepares speed.
Fig. 1 is the seismic physical model material velocity figure of embodiment and comparative example, and expression is adulterated by P25 nano powders, material
The acoustic wave propagation velocity of material is improved, after doping ratio reaches 5% to P25 nano powders in the epoxy, the sound wave of material
Spread speed reaches maximum 2901m/s, and after continuing the doping ratio of increase P25 nano powders, the speed of material is reduced on the contrary, leads to
The new seismic physical model material crossed after P25 nano powder doping vario-properties, can effectively simulate subsurface rock elastic construction, system
Make physical model, carry out physical simulation of seismic exploration Physical Experiment.
Fig. 2 represents the acoustic wave propagation velocity of the seismic physical model material of embodiment and comparative example and the relation of amplitude, shakes
The size of width is to represent the power that seismic physical model material permeability ability is represented with ultrasonic excitation seismic wave, illustrates material
Experimental performance is good and bad, and by experimental data, the penetrability that can obtain the epoxide resin material of mesh P25 nano powder doping contents is remote
More than pure epoxy resin.
Fig. 3 represents the different speed of the seismic physical model material of embodiment and comparative example and the relation of curing time,
The stability of cast material speed is illustrated, the acoustic wave propagation velocity of seismic physical model material of the invention becomes after 8 days substantially
In stabilization.
Claims (3)
1. a kind of P25 nano-powders epoxy resin seismic physical model material, it is characterised in that the cast material is by solidifying
Following components composition：
The weight portion of epoxy resin 100
650 type curing agent 80-100 weight portions
P25 nano powder 5-6 weight portions.
2. P25 nano-powders epoxy resin seismic physical model material as claimed in claim 1, it is characterised in that：
The epoxy resin is epoxy resin of the viscosity in 11000-14000mPa ﹒ s scopes.
3. a kind of preparation side of P25 nano-powders epoxy resin seismic physical model material as claimed in claim 1 or 2
Method, it is characterised in that methods described includes：
The component is by prepared described seismic physical model material after consumption solidification.
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| CN101544745A (en) * | 2009-04-22 | 2009-09-30 | 大连理工大学 | Method using MQ silicon resin and nanometer TiO2 for compound modification of epoxy resin |
| CN102443245B (en) * | 2010-10-12 | 2014-03-12 | 中国石油化工股份有限公司 | Earthquake physical model and preparation method and application thereof |
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