CN107656318A - The determination method and apparatus of Geologic Time - Google Patents
The determination method and apparatus of Geologic Time Download PDFInfo
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- CN107656318A CN107656318A CN201710742032.2A CN201710742032A CN107656318A CN 107656318 A CN107656318 A CN 107656318A CN 201710742032 A CN201710742032 A CN 201710742032A CN 107656318 A CN107656318 A CN 107656318A
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- G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
Abstract
The invention provides a kind of determination method and apparatus of Geologic Time, wherein, this method includes：Determine the energy discharged when each first nucleic all decays in multiple first nucleic of the natural radionuclide of testing sample；Determine that testing sample irradiates the fission energy for occurring to be discharged during nuclear fission in nuclear reactor；Determine caused sedimentary energy when testing sample irradiates in nuclear reactor；Energy, fission energy and the sedimentary energy discharged when all being decayed according to each first nucleic, determine the first Geologic Time undergone during testing sample simulation nuclear decay.In embodiments of the present invention, pass through the accurate calculating to the sedimentary energy during nuclear fission on testing sample and fission energy, natural radionuclide all decays the gross energy finally released in contrast testing sample, so that it is determined that going out the simulation nuclear decay Geologic Time that testing sample is undergone.
Description
Technical field
The present invention relates to technical field of geological exploration, the determination method and apparatus of more particularly to a kind of Geologic Time.
Background technology
Oil-gas geology prospecting results show that the radioactivity phenomenon of deep hydrocarbon source rock and oil bearing reservoir is typically more serious.This
The radioactivity on a little stratum mostlys come from α of the natural radionuclides such as uranium, thorium, potassium released in natural decay process and penetrated
Line, β rays and gamma-rays.Atomic nucleus can produce certain mass loss during natural decay, and discharge certain
Energy；Meanwhile alpha ray, β rays and gamma-rays can also produce certain heat with ambient substance effect.Above-mentioned this two
Caused energy is properly termed as radioactivity genesis heat during natural decay point due to radionuclide.Geology buries condition
Lower caused enclosed environment, radioactivity genesis heat can be caused to produce cumulative function, finally accumulate obtained radioactivity genesis
Heat has more obvious influence for ripe develop of organic matter.
Research based on radionuclide decay process is understood：Because radioactivity phenomenon is caused by atomic nucleus interior change
, the state change relation with electron outside nucleus is smaller, therefore, can only cause the temperature of electron outside nucleus state change, pressure and
Magnetic field can not significantly affect the decay process of radionuclide.That is, nuclear decay is for the ripe influence developed of organic matter
It is relevant with the Geologic Time that the content of radionuclide and stratum are undergone, and it is unrelated with the background of Geological Evolution, it is independent
In existing for the Geological Evolution events such as diagenesis, buried hypogenesis and igneous invasion baking.
To sum up, when it is determined that undergone during nuclear decay Geologic Time when, due to nuclear decay process pair under geological conditions
The effect of organic matter hydrocarbon generation is a long-term process, and the time of required consumption is longer, thus, can not be in laboratory conditions
Effect of the nuclear decay process to organic matter hydrocarbon generation under geological conditions directly is simulated, certainly also just can not be straight in laboratory conditions
Connect the Geologic Time for determining that nuclear decay process is undergone.
For the determination problem of above-mentioned Geologic Time, effective solution is not yet proposed at present.
The content of the invention
The embodiments of the invention provide a kind of determination method and apparatus for simulating nuclear decay Geologic Time, to solve existing skill
Effect of the nuclear decay process to organic matter hydrocarbon generation under geological conditions can not be directly simulated in art in laboratory conditions, also can not
The problem of determining the Geologic Time that nuclear decay process is undergone.
The embodiments of the invention provide a kind of determination method of Geologic Time, can include：Determine the natural of testing sample
The energy discharged when each first nucleic all decays in multiple first nucleic of radionuclide；It is determined that described treat test sample
Product irradiate the fission energy for occurring to be discharged during nuclear fission in nuclear reactor；Determine the testing sample in nuclear reactor
Caused sedimentary energy during irradiation；Energy, the core discharged when all being decayed according to each first nucleic splits
Become energy and the sedimentary energy, determine the first Geologic Time undergone during the testing sample simulation nuclear decay.
In one embodiment, energy, the core discharged when all being decayed according to each first nucleic splits
Become energy and the sedimentary energy, determine the first Geologic Time that the testing sample simulation nuclear decay is undergone, can wrap
Include：Ratio between the energy that calculating simulation is discharged when decay energy and each first nucleic all decay respectively
Value, obtains the multiple simulation nuclear decay ratios corresponding with the multiple first nucleic, wherein, decay energy is for the simulation
The fission energy and the sedimentary energy and；Determine to meet preset requirement in the multiple simulation nuclear decay ratio
Several simulation nuclear decay ratios；Meet the simulation nuclear decay ratio of preset requirement according to described several, determine described to be measured
The first Geologic Time undergone during sample simulation nuclear decay.
In one embodiment, the preset requirement is less than 1 for simulation nuclear decay ratio.
In one embodiment, the simulation nuclear decay ratio of preset requirement is met according to described several, it is determined that described treat
The first Geologic Time undergone during the simulation nuclear decay of test sample product, can include：Meet default want according to described several
The simulation nuclear decay ratio asked, described several meet each simulation nuclear decay ratio in the simulation nuclear decay ratio of preset requirement
The half-life period of the second corresponding nucleic, each second nucleic decay in several second nucleic is calculated and produces the simulation
Second Geologic Time required during decay energy；Using the minimum value in several second Geologic Times as the testing sample
The first Geologic Time undergone during simulation nuclear decay.
In one embodiment, each second nucleic in several second nucleic can be calculated according to below equation to decline
Change generation is described to simulate the second Geologic Time required during decay energy：
Wherein, TiRepresent the decay of i-th second nucleic produce the simulation decay energy when required second geology when
Between, θiRepresent the simulation nuclear decay ratio corresponding to i-th of second nucleic, T1/2Represent the half-life period of i-th of second nucleic.
In one embodiment, determine that the testing sample irradiates the core for occurring to be discharged during nuclear fission in nuclear reactor
Fission energy, it can include：Calculate the nucildic mass that nuclear fission occurs for the testing sample irradiation；According to the nucildic mass with
And the situation of change of sample energy before and after nuclear fission occurs, determine that the testing sample irradiates in nuclear reactor and nuclear fission occurs
When the fission energy that is discharged.
In one embodiment, caused sedimentary energy when the testing sample irradiates in nuclear reactor is determined, can
With including：According to exposure spots position in nuclear reactor of the physical property of the testing sample, the testing sample, described treat
Nuclear reactor physics ginseng when exposure time of the test sample product in nuclear reactor, the testing sample irradiate in nuclear reactor
Number, simulation determine caused sedimentary energy when the testing sample irradiates in nuclear reactor.
In one embodiment, the physical property of the testing sample can include but is not limited at least one of：Institute
Density, volume, thickness and the weight of testing sample are stated, the nuclear reactor physical parameter can include：The particle kind of radiation source
Particle kind when class and/or irradiation.
In one embodiment, it is determined that the first Geologic Time undergone during testing sample simulation nuclear decay
Afterwards, can also include：According to first Geologic Time, the hydrocarbon potentiality of test sample are determined.
The embodiment of the present invention additionally provides a kind of determining device of Geologic Time, can include：Decay energy determining module,
It is determined for each first nucleic whole decay when institute in multiple first nucleic of the natural radionuclide of testing sample
The energy discharged；Fission energy determining module, it is determined for the testing sample and generation core is irradiated in nuclear reactor
The fission energy discharged during fission；Sedimentary energy determining module, the testing sample is determined in nuclear reactor
Caused sedimentary energy during middle irradiation；Geologic Time determining module, it can be used for all being declined according to each first nucleic
Energy, the fission energy and the sedimentary energy discharged during change, determine the testing sample simulation nuclear decay
The first Geologic Time undergone in journey.
In one embodiment, the Geologic Time determining module can include：First decay ratio-dependent unit, can be with
Ratio between the energy discharged when decay energy and each first nucleic all decay for calculating simulation respectively
Value, obtains the simulation nuclear decay ratio corresponding with the multiple first nucleic, wherein, decay energy is described for the simulation
Fission energy and the sedimentary energy and；Second decay ratio-dependent unit, is determined for out the multiple simulation
Meet several simulation nuclear decay ratios of preset requirement in nuclear decay ratio；Geologic Time computing unit, can be used for basis
Described several meet the simulation nuclear decay ratio of preset requirement, determine to be undergone during the testing sample simulation nuclear decay
The first Geologic Time.
In embodiments of the present invention, nuclear fission and the process to release energy are produced based on nuclear reactor irradiation testing sample,
To simulate the nuclear decay process during earth history.By to the sedimentary energy during nuclear fission on testing sample and
The accurate calculating of fission energy, contrast natural radionuclide in testing sample and all decay the gross energy finally released, from
And determine the simulation nuclear decay Geologic Time that testing sample is undergone during nuclear decay.Employed in the application
Nuclear fission process takes short, it is easy to accomplish, directly it can not simulate ground in laboratory conditions in the prior art so as to solve
Effect of the nuclear decay process to organic matter hydrocarbon generation under the conditions of matter, it can not also determine the Geologic Time that nuclear decay process is undergone
Problem.Further, the hydrocarbon potentiality of test sample are determined based on above-mentioned Geologic Time.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of determination method flow diagram for Geologic Time that the application provides；
Fig. 2 is a kind of a kind of structured flowchart of the determining device for Geologic Time that the application provides.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
It should be noted that in the description of the present application, term " first ", " second " etc. are only used for describing purpose and difference
Similar object, between the two and sequencing is not present, can not be interpreted as indicating or implying relative importance.In addition,
In the description of the present application, unless otherwise indicated, " multiple " are meant that two or more.
In view of determine nuclear decay process undergone Geologic Time when, due under geological conditions nuclear decay process to organic
The effect of matter hydrocarbon is a long-term process, and the time of required consumption is longer, can not directly be simulated in laboratory conditions.
Have been proposed that neutron irradiation can be carried out to testing sample using nuclear reactor in the prior art, pass through induced activity nucleic
Fission, so as to realize the simulation of nuclear decay process.But above-mentioned simulated experiment is applied to a mostly important step for reality, is
Calculate simulated nuclear decay Geologic Time.But do not propose the method on determining Geologic Time in the prior art, because
This, is inventors herein proposed during being irradiated using testing sample in nuclear reactor, because of radioactivity genesis caused by particle bombardment
The hot quantitative method for calculating undergone simulation nuclear decay Geologic Time, the nuclear fission discharged during based on testing sample nuclear fission
Energy, sedimentary energy come simulate released in above-mentioned nuclear decay process radioactivity genesis heat, and combine each first nucleic
The energy all discharged during decay, determine that the nuclear decay of nuclear decay generation simulation occurs in each first nucleic for testing sample
Geologic Time required for radioactivity genesis heat.Based on this, it is proposed that a kind of determination method of Geologic Time, as shown in figure 1, can
To comprise the following steps：
S101：Determine that each first nucleic is whole in multiple first nucleic of multiple natural radionuclides of testing sample
The energy discharged during decay.
In the present embodiment, when can first calculate each first nucleic whole decay in multiple first nucleic of testing sample
The energy discharged.Wherein, natural radionuclide can be the general designation of the first nucleic in radioactive decay series, i.e.
Natural radionuclide can be made up of multiple first nucleic, wherein, it is notable that the first nucleic is day heat emission
Nucleic in nucleic, in order to be made a distinction with the second nucleic hereinafter, so the first nucleic is depicted here as, in the application
In the first nucleic and the second nucleic refer to nucleic, and do not have other particular meanings.First nucleic whole decay when institute
The energy that the energy discharged also refers to be discharged when all decaying is that only a kind of natural radionuclide is all sent out
The energy that raw nuclear decay is discharged, the energy do not released including the generation nuclear decay of other radionuclides.Wherein, naturally put
Penetrating property nucleic can include：Uranium series headed by uranium -238 to lead -206, the actinium series headed by uranium -235 to lead -207, with thorium -
Natural radionuclide headed by 232 to atomic numbers such as the thorium familys of lead -208 more than 82, and the atomic number such as carbon-14, kalium-40
Natural radionuclide of the number less than 81.In one embodiment of the application, the natural radionuclide of testing sample is main
It can include：(hereinafter referred to as uranium element, is referred specifically to multiple isotopes of uranium element：238U、235U、234U), potassium member
Element (refers specifically in this application：40K), thorium element (refers specifically in this application：232Th).It is, of course, also possible to including
Other natural radionuclides such as above-mentioned carbon, as long as meeting that the natural radionuclide of selected measure is at least 3 kinds
Requirement, be specially which kind of natural radionuclide, the application is not construed as limiting to this.
, can be according to lower section when the natural radionuclide of testing sample is respectively uranium element, potassium element, thorium element
The ENERGY E 1 discharged when each first nucleic all decays in multiple first nucleic of formula calculating testing sample：
S1-1：Determine content of the testing sample in the uranium element contained by predose, thorium element and potassium element.
The testing sample that can have fully been mixed a little with accurate weighing, after being processed into solution by the way that acid is molten, accurate measure
Uranium content, thorium content and the potassium content of the testing sample predose.Wherein, testing sample needs that fine ground mill is even to be to sample particle diameter
Less than 74 μm, the weight of weighed testing sample is not less than 0.10000g, weighs accuracy and is not less than 10 μ g.
The acid solutions such as nitric acid, hydrofluoric acid can be selected during sour molten processing, the acid solution purity should be top pure grade；With reference to electricity
After testing sample is carried out the molten processing of acid by ultra-pure water of the resistance rate not less than 18M Ω, through inductively coupled plasma mass spectrometry, electricity
Sense Coupled Plasma spectroscopy determines the concentration of uranium, thorium, potassium respectively, and then calculates uranium, thorium, potassium content in testing sample.
Wherein, the blank content that uranium element contained in nitric acid, hydrofluoric acid and ultra-pure water, thorium element enter obtained by line blank test is equal
Less than 10-9g L-1, potassium blank content be less than 10-6g L-1.Uranium, the content results of thorium should be accurate to 10 in sample-9G, potassium contain
Amount measurement result should be accurate to 10-6g。
S1-2：According to the quality of testing sample, with reference to the content of above-mentioned uranium element, thorium element and potassium element, calculate
The quality m of uranium element into testing sampleU 1, thorium element quality mTh 1, potassium element quality mK 1。
Can accurate weighing predetermined quality again testing sample, according to above-mentioned uranium, thorium, potassium content, calculate uranium element
Quality mU 1, thorium element quality mTh 1, potassium element quality mK 1.Wherein, the quality of the testing sample weighed again is not less than
1.00000g, weigh accuracy and be not less than 10 μ g.Uranium, thorium, the Mass accuracy of three kinds of elements of potassium being calculated are not less than 10- 9g。
S1-3：It is complete with reference to uranium element, thorium element and potassium element according to the quality of uranium element, thorium element and potassium element
The situation of change of energy in energy equation during portion's nuclear decay, uranium element whole decay when institute in testing sample is calculated respectively
The energy that the energy and potassium element that energy, the thorium element discharged is discharged when all decaying are discharged when all decaying
E1。
By the energy discharged when each first nucleic all decays can be calculated according to below equation：
Wherein, E1iRepresent the energy discharged when i-th of radionuclide all decays, Δ miRepresent i-th of radiation
Property the whole front and rear mass changes of decay of nucleic, c=299792458m/s.Due to mole of each radionuclide in the application
Quality is different, so each radionuclide can also be distinguished based on molal weight, i.e. utilizesTo represent molal weight
The energy discharged when all being decayed by k radionuclide.
In one embodiment of the application, work as calculating238U all decay discharged energy when, due to238U is complete
It will become after decay206Pb, 8 are discharged in the process4He particles and 6 electronics, reaction energy equation are expressed as：238U
→206Pb+84He+6e-+ energy, therefore, E can be calculated according to below equation238 1：
E238 1=Δ mC2=0.99275 × mU 1/238.0508×(238.0508-205.9744-8×4.0026-4×0)
×10-3×2997924582=20749.5049 × 106×mU 1, unit is joule (J).Wherein, 0.99275 is238U is in nature
Isotope abundance in boundary, 238.0508 are238U molal weight, 205.9744 are206Pb molal weight, 4.0026 be helium
Particle (4He molal weight), 0 is electronics (e-) molal weight, 10-3For gram to kilogram conversion coefficient, E238 1As E1.
In another embodiment of the application, work as calculating235U all decay discharged energy when, due to235U is complete
It will become after full decay207Pb, 7 are discharged in the process4He particles and 4 electronics, reaction energy equation are expressed as
：235U→207Pb+74He+4e-+ energy, therefore, E can be calculated according to below equation235 1：
E235 1=Δ mC2=0.00720 × mU 1/235.0439×(235.0439-206.9759-7×4.0026-4×0)
×10-3×2997924582=136.5272 × 106×mU 1, unit J.Wherein, 0.00720 is235U is same in nature
The plain abundance in position, 235.0439 are235U molal weight, 206.9759 are207Pb molal weight, 4.0026 are4He mole matter
Amount, 0 is e-Molal weight, 10-3For gram to kilogram conversion coefficient, E235 1As E1.
In another embodiment of the application, work as calculating234U all decay discharged energy when, due to234U is complete
It will become after full decay206Pb, 7 are discharged in the process4He particles and 4 electronics, reaction energy equation are234U
→206Pb+74He+4e-+ energy, therefore, E can be calculated according to below equation234 1：
E234 1=Δ mC2=0.00005 × mU 1/234.0409×(234.0409-205.9744-7×4.0026-4×0)
×10-3×2997924582=0.9234 × 106×mU 1, unit J.Wherein, 0.00005 is234Same positions of the U in nature
Plain abundance, 234.0409 are234U molal weight, 205.9744 are206Pb molal weight, 4.0026 are4He mole matter
Amount, 0 is e-Molal weight, 10-3For gram to kilogram conversion coefficient, E234 1As E1.
In another embodiment of the application, work as calculating232Th all decay discharged energy when, due to232Th
It will become after decay completely208Pb, 6 are discharged in the process4He particles and 4 electronics, reaction energy equation are232Th
→208Pb+64He+4e-+ energy, therefore, E232 1It should be calculated in accordance with below equation：
E232 1=Δ mC2=1.00000 × mU/232.0380×(232.0380-207.9766-6×4.0026-6×0)
×10-3×2997924582=17670.0042 × 106×mTh 1, unit J.Wherein, 1.00000 are232Th is in nature
Isotope abundance, 232.0380 are232Th molal weight, 207.9766 are208Pb molal weight, 4.0026 are4He's
Molal weight, 0 is e-Molal weight, 10-3For gram to kilogram conversion coefficient, E232 1As E1.
In another embodiment of the application, work as calculating40K all decay discharged energy when, due to40K is complete
It will become after decay40Ca, discharges 1 electronics in the process, and reaction equation is40K→40Ca+e-+ energy, therefore, E40 1It should abide by
Calculated according to below equation：
E40 1=Δ mC2=0.000117 × mU/39.9640×(39.9640-39.9626-1×0)×10-3×
2997924582=0.3684 × 106×mK 1, unit J.Wherein, 0.000117 is40Isotope abundances of the K in nature,
39.9640 are40K molal weight, 39.9626 are40Ca molal weight, 0 is e-Molal weight, 10-3For gram to kilogram
Conversion coefficient, E40 1As E1.
In the present embodiment, can be calculated according to above-mentioned S1-1 to S1-3 each in multiple radionuclides of testing sample
Multiple gross energy E1 that individual first nucleic is discharged when all decaying, so as to lay base for the follow-up Geologic Time that calculates
Plinth.
S102：Calculate testing sample and the fission energy for occurring to be discharged during nuclear fission is irradiated in nuclear reactor.
S103：Calculate caused sedimentary energy when testing sample irradiates in nuclear reactor.
In the present embodiment, after the energy discharged when obtaining each first nucleic and all decaying, can calculate
Testing sample irradiates the fission energy and sedimentary energy for occurring to be discharged during nuclear fission in nuclear reactor.
Specifically, calculate testing sample irradiates the fission energy for occurring to be discharged during nuclear fission in nuclear reactor, can
To comprise the following steps：
S2-1：Calculate the nucildic mass that nuclear fission occurs for testing sample irradiation.
Specifically, it can include：
S2-1-1：Testing sample is placed in nuclear reactor, and by the default exposure time of corresponding particle irradiation.
Above-mentioned particle can be the particles such as epithermal neutron, electronics, proton.In the present embodiment, during above-mentioned particle is superthermal
Son, the irradiation energy of the epithermal neutron are no more than 1MeV, thereby may be ensured that in testing sample uranium element (such as：238U) no
Nuclear chain reaction can occur.Wherein, above-mentioned exposure time can be determined according to the nuclear decay time to be simulated.
S2-1-2：Quality after accurate weighing sample irradiation.
Wherein, the weighing accuracy of irradiated sample is not less than 10 μ g.
S2-1-3：The accurate weighing sample after irradiation a little, acid is molten be processed into solution after, after the irradiation of accurate determination sample
The radionuclide content of nuclear fission occurs.
In one embodiment in this application, because uranium element is compared with other elements, core occurs under geological conditions
Energy variation is most obvious during decay, thus, measure element selected in this application is uranium element, this most important by super
The element of nuclear fission can occur after thermal neutron bombardment.It is of course also possible to be other nucleic, the application is not construed as limiting to this.
When with sour molten processing in S1-1 by the way of identical requirement, to the sample treatment after irradiation into solution, and determine
The nucleic of generation nuclear fission after sample irradiation, in this application the uranium element content as after sample irradiation.
S2-1-4：According to the radionuclide content of the generation nuclear fission after the quality and sample irradiation after sample irradiation, accurate meter
The nucildic mass of nuclear fission occurs after calculation sample irradiation.
In one embodiment in this application, it can be contained according to the uranium after the quality and sample irradiation after sample irradiation
Amount, the accurate uranium element quality m calculated after sample irradiationU 2。
S2-1-5：Quality difference value of the nucleic of nuclear fission after predose will occur, as the nucleic matter that nuclear fission occurs
Amount.
In one embodiment in this application, it can be split using quality difference value of the uranium element after predose as core occurs
The uranium element quality of change.That is, the uranium quality m of nuclear fission occursU 3=mU 1-mU 2, calculated mass unit is g, and accuracy should not be low
In 10-9g。
S2-2：According to the situation of change of sample energy before and after nucildic mass and generation nuclear fission, determine that testing sample exists
The fission energy discharged during nuclear fission occurs for irradiation in nuclear reactor.
The energy variation and mass-energy equation before and after nuclear fission can occur according to the nucleic that nuclear fission occurs, calculate sample
Middle uranium atom occurs nuclear fission after being bombarded by epithermal neutron and released energy E2.
In one embodiment in this application, the nucleic of above-mentioned generation nuclear fission is235U.Due to being less than 1MeV by energy
Neutron bombardment after,238U can capture neutron but not fission, only235After absorbing neutron nuclear fission occurs for U, therefore after irradiation
In sample the reduction of uranium element quality both from235U fission.235U has a variety of fission approach, wherein more representational
It is fission generation after absorbing 1 neutron141Ba and92Kr, and release 3 neutrons and energy.Reaction equation is235U+n→141Ba+92Kr+3n+ energy, therefore, E can be calculated according to formula once235 2：
E235 2=Δ mC2=mU 3/235.0439×(235.0439+1.0087-140.9139-91.8973-3×
1.0087)×10-3×2997924582=82325.8932 × 106×mU 3, unit is joule (J).Wherein, 235.0439 are235U molal weight, 140.9139 are141Ba molal weight, 91.8973 are92Kr molal weight, 1.0087 be neutron (n)
Molal weight, 10-3For gram to kilogram conversion coefficient.E235 2As E2.
Further, can according to exposure spots position of the physical property, testing sample of testing sample in nuclear reactor,
Exposure time of the testing sample in nuclear reactor, nuclear reactor physical parameter when testing sample irradiates in nuclear reactor,
Simulation calculates caused sedimentary energy E3 when testing sample irradiates in nuclear reactor.
In order to obtain optimal sedimentary energy, the physical property of above-mentioned testing sample can include but is not limited to below at least
One of：Density (arrangement and the composition situation that include atom), volume, thickness and the weight of testing sample, exposure spots position tool
The distance between body can be radiation source to testing sample, and nuclear reactor physical parameter includes：Grain when radiation source and/or irradiation
Subcategory etc..
After above-mentioned parameter has been chosen, Monte Carlo simulation can be used to calculate testing sample and irradiated in nuclear reactor
When caused sedimentary energy E3.
Nuclear reactor is a kind of device that artificial nuclear reaction can be realized with controlled manner.The side of energy is produced according to atomic nucleus
Formula, nuclear reactor can be divided into two kinds of fission reactor and fusion reactor.It is completed in the world today and widely used
Nuclear reactor is all fission reactor.Main nuclear process in fission reactor is the phase of neutron and various nucleic in nuclear reactor
Interaction.On the one hand the energy source of nuclear reaction comes from the sedimentary energy of irradiation neutron, on the other hand also come from sample certainly
The fission energy of chain reaction release occurs after neutron bombardment for body heavy element.
Because the natural radionuclide in the earth's crust and deposit is more, but content is higher, and more main radioactivity
Nucleic is238U、235U、234U、232Th and40K etc..But content of these radionuclides in deposit has very big difference, partly declines
Phase also each differs from 2.47 × 105 years to 1.41 × 1010 years.In addition, under neutron bombardment, it may occur however that the core of nuclear fission
Element also includes238U、235U、232Th etc., but the incident neutron energy threshold value that these nucleic occur needed for nuclear fission is different, chain type core
The discharged energy of reaction also has very big difference.
In this application, using the time it is shorter can the nuclear fission completed of laboratory react and decline come the longer core of simulated time
Change process, and based on the sedimentary energy and fission energy that nuclear fission obtains, be calculated during neutron irradiation testing sample because
Radioactivity genesis heat caused by neutron bombardment, by radioactivity genesis heat is quantitative calculate to nuclear decay the geology undergone when
Between.The nuclear fission mode that is itd is proposed using the application simulates nuclear decay, it is possible to achieve the purpose of laboratory simulation nuclear decay, enters
And laboratory can be realized and quantitatively calculate the purpose for the simulation nuclear decay Geologic Time that testing sample is undergone.
S104：Energy, the fission energy and the Energy Deposition discharged when all being decayed according to each first nucleic
Amount, determine the first Geologic Time undergone during testing sample simulation nuclear decay.
, can be according to each first nucleic in multiple first nucleic of radionuclide in one embodiment of the application
All decay discharged energy and fission energy, sedimentary energy, determines the simulation nuclear decay first that testing sample is undergone
Geologic Time.Specifically, it may comprise steps of；
S4-1：Ratio between the energy that calculating simulation is discharged when decay energy and each first nucleic all decay
Value, obtains the multiple simulation nuclear decay ratios corresponding with multiple first nucleic, wherein, decay energy is nuclear fission energy for simulation
Amount with sedimentary energy and.
The energy that E2+E3 is discharged as simulation nuclear decay, the production of disintegrating nucleus of E2+E3/E1 ratio representative simulation
Raw energy and the ratio that energy is produced after all decays, as in sample in multiple first nucleic each first nucleic simulation core
Decay ratio θ.
I.e., it is possible to according to238U、235U、234U、232Th、40E1 corresponding to K：E238 1、E235 1、E234 1、E232 1、E40 1, respectively
The multiple simulations decay ratio corresponding with multiple first nucleic is calculated, is respectively：θ238、θ235、θ234、θ232、θ40。
S4-2：Determine several simulation nuclear decay ratios for meeting preset requirement in multiple simulation nuclear decay ratios.
The preset requirement is less than 1 for each simulation nuclear decay ratio in multiple simulation nuclear decay ratios.When simulation nuclear decay
When ratio is more than 1, the ratio value is meaningless, can reject.
S4-3：According to the simulation nuclear decay ratio for meeting preset requirement, the simulation nuclear decay that testing sample is undergone is determined
First Geologic Time.
In one embodiment of the application, can be met with several preset requirement simulation nuclear decay ratio, several
Meet the half-life period of the second nucleic in the simulation nuclear decay ratio of preset requirement corresponding to each simulation nuclear decay ratio, calculate
Obtain each second nucleic decay in several second nucleic and produce the second Geologic Time required when simulating decay energy；Will
The Geologic Time of simulation nuclear decay first that minimum value in several second Geologic Times is undergone as testing sample.
Each second nucleic decay in several second nucleic can be calculated according to below equation and produce to simulate and declined
Become the second Geologic Time required during energy：
Wherein, TiRepresent the decay of i-th second nucleic produce the simulation decay energy when required second geology when
Between, θiRepresent the simulation nuclear decay ratio corresponding to i-th of second nucleic, T1/2Represent the half-life period of i-th of second nucleic.
Similar with above-mentioned first nucleic and the second nucleic, the second Geologic Time and above-mentioned first Geologic Time herein is equal
Geologic Time can be represented, be different result of calculation to distinguish the two, herein with the first Geologic Time and the second geology when
Between make a distinction.
In one embodiment of the application, above-mentioned expression formula can also be represented using the molal weight of the second nucleic：
Wherein, TkThe second nucleic that expression molal weight is k decays, and generation is described to simulate ground required during decay energy
Matter time, θkMolal weight is represented as the simulation nuclear decay ratio corresponding to k the second nucleic,It is k's to represent molal weight
The half-life period of second nucleic.
In one embodiment of the application,238U produces Geologic Time of the simulation needed for decay energy E2+E3 and calculates public affairs
Formula is t238=-ln (1- θ238)/ln2×4.51×109=-6.54 × ln (1- θ238)×109, unit is year.Wherein, ln2=
0.69,4.51 × 109Nian Wei238U half-life period, belong to constant.
In another embodiment of the application,235U produces Geologic Time of the simulation needed for decay energy E2+E3 and calculated
Formula is t235=-ln (1- θ235)/ln2×7.00×108=-1.01 × ln (1- θ235)×109, unit is year.Wherein, 7.00
×108Nian Wei235U half-life period, belong to constant.
In another embodiment of the application,234U produces Geologic Time of the simulation needed for decay energy E2+E3 and calculated
Formula is t234=-ln (1- θ234)/ln2×2.47×105=-3.58 × ln (1- θ234)×105, unit is year.Wherein, 2.47
×105Nian Wei234U half-life period, belong to constant.
In another embodiment of the application,232Th produces the simulation Geologic Time meter needed for decay energy E2+E3
Calculation formula is t232=-ln (1- θ232)/ln2×1.41×1010=-2.04 × ln (1- θ232)×1010, unit is year.Wherein,
1.41×1010Nian Wei232Th half-life period, belong to constant.
In another embodiment of the application,40K produces Geologic Time of the simulation needed for decay energy E2+E3 and calculated
Formula is t40=-ln (1- θ40)/ln2×1.25×109=-1.81 × ln (1- θ) × 109, unit is year.Wherein, 1.25 ×
109Nian Wei40K half-life period, belong to constant.
After above-mentioned multiple second Geologic Times are obtained, t can be chosen238、t235、t234、t232、t40In minimum value make
The first Geologic Time undergone by testing sample during nuclear decay.
, can after the first Geologic Time undergone during testing sample simulation nuclear decay is obtained using aforesaid way
To establish the Core analysis of the Geologic Time of nuclear decay first and sample hydrocarbon amount, laboratory data is extrapolated to according to Core analysis
Earth history period, so as to analyze nuclear decay Geologic Time, hydrocarbon amount and the hydrocarbon potentiality that test sample is undergone.Enter
One step, the correlation that nuclear decay history forms with hydrocarbon history, product can be established.Thus, determine nuclear decay process to known core
The hydrocarbon contribution of decay Geologic Time hydrocarbon source rock.
It is specifically described, but is worth with reference to determination method of the specific embodiment to above-mentioned Geologic Time
It is noted that the specific embodiment merely to the present invention is better described, does not form inappropriate limitation of the present invention.
The Geologic Time for being to determine the nuclear decay of kerogen sample and being undergone of the present embodiment description.The present embodiment is used
Kerogen prepare from the Ordos Basin Triassic system and grow 7 sections of rich organic shale, be derived from Shaanxi Province Yijun County Tang Nihe villages.
Specifically it may comprise steps of：
S201：The kerogen sample to be irradiated mixed below 74 μm of accurate weighing 0.15000g particle diameters and fully.Use
Ultra-pure water of nitric acid, hydrofluoric acid and the resistivity of top pure grade not less than 18M Ω by after the molten processing of sample acid, through inductive etc. from
Daughter mass spectrography, inductively coupled plasma spectrometry method determine the content of uranium, thorium, potassium in the solution respectively, and then calculate cheese
Content in root is respectively 11.723 μ g g-1、1.711μg g-1、1472.258μg g-1.Wherein blank control experiment display, nitre
Acid, hydrofluoric acid and the uranium of ultra-pure water, the blank ion content of thorium are below 10-9g L-1, potassium blank ion content be less than 10-6g
L-1。
S202：Accurate weighing 1.00000g kerogen sample, according to the uranium, thorium, potassium content determined in step S201,
Calculate uranium, thorium, the element quality m of potassiumU 1、mTh 1、mK 1Respectively 11.723 μ g, 1.711 μ g, 1472.258 μ g.
S203：According to the situation of change and mass-energy equation of energy in the energy equation of radio isotope nuclear decay, and
Uranium, thorium, the element quality m of potassium in irradiation sample obtained by step S202U 1、mTh 1、mK 1, calculate uranium, thorium, potassium is each naturally puts
Injectivity isotope is all after decay, the energy finally released.The energy that each nucleic is all discharged after decay is respectively：
E238 1=20749.5049 × 106×mU 1=2.432 × 105J,
E235 1=136.5272 × 106×mU 1=1.600 × 103J,
E234 1=0.9234 × 106×mU 1=10.825J,
E232 1=17670.0042 × 106×mTh 1=3.023 × 104J,
E40 1=0.3684 × 106×mK 1=542.380J.
S204：By kerogen sample in certain epithermal neutron (49-2 light-water nuclear reactor D10 hole of Chinese Atomic Energy Research Institute
Road) in irradiation 3 hours, duct centre and average γ dosage are respectively 2.18 × 10 during full power6Gy/h and 1.80 ×
106Gy/h。
S205：Quality after accurate weighing sample irradiation is 0.99995g.
S206：Sample after accurate weighing 0.15000g irradiation is not low using the nitric acid, hydrofluoric acid and resistivity of top pure grade
In 18M Ω ultra-pure water by the molten processing of sample acid after, determine the content of uranium in the solution through inductively coupled plasma mass spectrometry,
And then the uranium content after calculating irradiation in kerogen is 11.711 μ g g-1.Wherein blank control experiment display, nitric acid, hydrofluoric acid
The blank ion content of uranium, thorium with ultra-pure water is below 10-9gL-1, potassium blank ion content be less than 10-6gL-1。
S207：According to the sample obtained in the quality 0.99995g and step S206 after the sample irradiation obtained in step S205
The μ g g of uranium content 11.711 after product irradiation-1, the uranium element quality m after sample irradiation is accurately calculatedU 2For 11.710 μ g.
S208：According to quality difference value of the uranium element obtained in step S202 and step S207 after predose, hair is calculated
The uranium element quality m of raw nuclear fissionU 3=mU 1-mU 2=0.013 μ g.
S209：235Final fission products of the U after neutron bombardment are144Ba、89Kr and 2 neutron.According to mass-energy equation
With the uranium element quality of the generation nuclear fission after the sample irradiation that is obtained in step S206, calculate uranium atom in sample core occurs and split
Become the E2 that releases energy.E2=E235 2=82325.8932 × 106×mU 3=1070.225J.
S210：According to sample physical property, residing exposure spots position, exposure time and nuclear reactor physical parameter, utilize
Monte Carlo simulation calculates sedimentary energy E3=5654.328J during sample irradiation.Specific calculating process is with reference to inscription on ancient bronze objects silk floss, Li Su
Mei chief editors'《MCNP3B service manuals》(revised edition in 1998, in the Institute of Computer application of China Atomic Energy Science Research Institute
Portion's data).
S211：Using the energy obtained by step S209 and step S210 and (E2+E3=6724.553J) as simulate
Decay energy, released the energy ratio ((E2+ of the simulation each element whole decay that decay energy and step S203 have been obtained
E3)/E1) as each radioisotopic simulation nuclear decay ratio θ.It is calculated according to step S203238U、235U、234U
、232Th、40E1 corresponding to K is respectively E238 1、E235 1、E234 1、E232 1、E40 1, calculate each radioisotopic simulation decay ratio
Example is respectively θ238=0.0277, θ235=4.2028, θ234=621.2058, θ232=0.2224, θ40=12.3982.Because of θ235、
θ234、θ40More than 1, it is not intended to justice, select θ238And θ232Carry out simulating the calculating of nuclear decay Geologic Time.
S212：According to238U、232Th radioactive atom half-life period T1/2With simulation nuclear decay resulting in step S211
Ratio θ238、θ232, calculate238U、232Th decays produce simulation, and Geologic Time needed for decay energy is respectively：
t238=-6.54 × ln (1- θ238)×109=1.83 × 108Year,
t232=-2.04 × ln (1- θ232)×1010=5.13 × 108Year,
Choose minimum value t therein238I.e. 1.83 hundred million years, as this simulation nuclear decay Geologic Time.
Based on same inventive concept, a kind of determining device of Geologic Time is additionally provided in the embodiment of the present invention, it is such as following
Embodiment described in.It is similar to the determination method of Geologic Time to solve the principle of problem due to the determining device of Geologic Time, because
The implementation of the determining device of this Geologic Time may refer to the implementation of the determination method of Geologic Time, repeats part and repeats no more.
Used below, term " unit " or " module " can realize the combination of the software and/or hardware of predetermined function.Although with
Device described by lower embodiment is preferably realized with software, but hardware, or the realization of the combination of software and hardware
May and it be contemplated.Fig. 2 is a kind of structured flowchart of the determining device of the Geologic Time of the embodiment of the present invention, such as Fig. 2 institutes
Show, can include：Decay energy determining module 201, fission energy determining module 202, sedimentary energy determining module 203, geology
Time determining module 204, the structure is illustrated below.
Decay energy determining module 201, it is determined for multiple first cores of the natural radionuclide of testing sample
The energy discharged when each first nucleic all decays in element；
Fission energy determining module 202, be determined for the testing sample irradiated in nuclear reactor occur core split
The fission energy discharged during change；
Sedimentary energy determining module 203, it is determined for produced when the testing sample irradiates in nuclear reactor
Sedimentary energy；
Geologic Time determining module 204, it can be used for what is discharged when all being decayed according to each first nucleic
Energy, the fission energy and the sedimentary energy, determine to be undergone during testing sample simulation nuclear decay the
One Geologic Time.
In one embodiment, the Geologic Time determining module includes：First decay ratio-dependent unit, can be used for
Ratio between the energy that calculating simulation is discharged when decay energy and each first nucleic all decay respectively, is obtained
To the multiple simulation nuclear decay ratios corresponding with the multiple each first nucleic, wherein, decay energy is for the simulation
The fission energy and the sedimentary energy and；Second decay ratio-dependent unit, is determined for out the multiple
Meet several simulation nuclear decay ratios of preset requirement in simulation nuclear decay ratio；Geologic Time computing unit, can be used for
Meet the simulation nuclear decay ratio of preset requirement according to described several, determine institute during the testing sample simulation nuclear decay
First Geologic Time of experience.
The embodiment of the determining device of the Geologic Time provided using the various embodiments described above, geology can be implemented automatically
The determination method of time, is predicted to Geologic Time, it may not be necessary to implements the specific participation of personnel, directly can export ground
The prediction result of matter time, it is simple and quick, effectively increase Consumer's Experience.
Need what is illustrated, device described above can also include other embodiment party according to the description of embodiment of the method
Formula, concrete implementation mode are referred to the description of related method embodiment, not repeated one by one herein.
As can be seen from the above description, the embodiment of the present invention realizes following technique effect：Based on nuclear reactor spoke
Nuclear fission and the process to release energy are produced according to testing sample, to simulate the nuclear decay process during earth history.Pass through
Accurate calculating to the sedimentary energy during nuclear fission on testing sample and fission energy, contrast natural in testing sample
Radionuclide all decays the gross energy finally released, so that it is determined that when going out the simulation nuclear decay geology that testing sample is undergone
Between.Due to the nuclear fission process employed in the application take it is short, it is easy to accomplish, in the prior art can not be in reality so as to solve
Test under the conditions of room and directly simulate effect of the nuclear decay process to organic matter hydrocarbon generation under geological conditions, can not also determine nuclear decay
The problem of Geologic Time that process is undergone.Further, the hydrocarbon potentiality of test sample are determined based on above-mentioned Geologic Time.
The application is not limited to be the situation described by the embodiment of the present application.Some professional standards use certainly
Definition mode or embodiment description practice processes on embodiment amended slightly can also realize above-described embodiment it is identical,
The implementation result being anticipated that after equivalent or close or deformation.Using data acquisition/calculating/judgement after these modifications or deformation
Deng the embodiment of acquisition, still may belong within the scope of the optional embodiment of the application.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The means for the property made can include more or less operating procedures.The step of being enumerated in embodiment order is only numerous steps
A kind of mode in execution sequence, does not represent unique execution sequence., can be with when device in practice or end product perform
According to embodiment, either method shown in the drawings order performs or parallel performs (such as parallel processor or multiple threads
Environment, even distributed data processing environment).Term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, product or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, product or equipment also to include
Intrinsic key element.In the absence of more restrictions, be not precluded from the process including the key element, method, product or
Other identical or equivalent elements in person's equipment also be present.
Unit, device or module that above-described embodiment illustrates etc., it can specifically be realized by computer chip or entity, or
Realized by the product with certain function.For convenience of description, various modules point are divided into function when describing apparatus above
Do not describe.Certainly, when implementing the application can the function of each module in same or multiple softwares and/or hardware it is real
It is existing, the module for realizing same function can also be realized by the combination of multiple submodule or subelement etc..Dress described above
Put that embodiment is only schematical, for example, the division of the unit, only a kind of division of logic function, when actually realizing
There can be other dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or one
A little features can be ignored, or not perform.It is another, shown or discussed mutual coupling or direct-coupling or communication link
It can be by some interfaces, the INDIRECT COUPLING or communication connection of device or unit to connect, and can be electrical, mechanical or other shapes
Formula.
It is also known in the art that in addition to realizing controller in a manner of pure computer readable program code, it is complete
Entirely can by by method and step carry out programming in logic come controller with gate, switch, application specific integrated circuit, may be programmed
The form of logic controller and embedded microcontroller etc. realizes identical function.Therefore this controller is considered one kind
Hardware component, and what its inside was included is used to realize that the device of various functions can also to be considered as the structure in hardware component.Or
Person even, not only can be able to will be the software module of implementation method but also can be hardware for realizing that the device of various functions is considered as
Structure in part.
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure, class etc..The application can also be put into practice in a distributed computing environment, in these DCEs,
By performing task by communication network and connected remote processing devices.In a distributed computing environment, program module can
With in the local and remote computer-readable storage medium including storage device.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Based on such understanding, the technical scheme essence of the application
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer equipment
(can be personal computer, mobile terminal, server, either network equipment etc.) perform each embodiment of the application or implementation
Method described in some parts of example.
Each embodiment in this specification is described by the way of progressive, same or analogous portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.The application can be used for crowd
In more general or special purpose computing system environments or configuration.Such as：Personal computer, server computer, handheld device or
Portable set, laptop device, multicomputer system, the system based on microprocessor, set top box, programmable electronics are set
Standby, network PC, minicom, the DCE etc. of mainframe computer including any of the above system or equipment.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application's
Spirit.
Claims (11)
1. a kind of determination method of Geologic Time, it is characterised in that including：
Determine to be discharged when each first nucleic all decays in multiple first nucleic of the natural radionuclide of testing sample
The energy gone out；
Determine that the testing sample irradiates the fission energy for occurring to be discharged during nuclear fission in nuclear reactor；
Determine caused sedimentary energy when the testing sample irradiates in nuclear reactor；
Energy, the fission energy and the Energy Deposition discharged when all being decayed according to each first nucleic
Amount, determine the first Geologic Time undergone during the testing sample simulation nuclear decay.
2. the method as described in claim 1, it is characterised in that discharged when all being decayed according to each first nucleic
Energy, the fission energy and the sedimentary energy, determine the first ground that testing sample simulation nuclear decay is undergone
The matter time, including：
Ratio between the energy that calculating simulation is discharged when decay energy and each first nucleic all decay respectively
Value, obtains the multiple simulation nuclear decay ratios corresponding with the multiple first nucleic, wherein, decay energy is for the simulation
The fission energy and the sedimentary energy and；
Determine several simulation nuclear decay ratios for meeting preset requirement in the multiple simulation nuclear decay ratio；
Meet the simulation nuclear decay ratio of preset requirement according to described several, determine the testing sample simulation nuclear decay process
Middle the first undergone Geologic Time.
3. method as claimed in claim 2, it is characterised in that the preset requirement is less than 1 for simulation nuclear decay ratio.
4. method as claimed in claim 2, it is characterised in that meet the simulation nuclear decay of preset requirement according to described several
Ratio, the first Geologic Time undergone during the testing sample simulation nuclear decay is determined, including：
Meet that the simulation nuclear decay ratio of preset requirement, described several meet the simulation core of preset requirement according to described several
The half-life period of the second nucleic in decay ratio corresponding to each simulation nuclear decay ratio, it is calculated in several second nucleic
Each second nucleic decay generation is described to simulate the second Geologic Time required during decay energy；
The undergone during the minimum value in several second Geologic Times is simulated into nuclear decay as the testing sample
One Geologic Time.
5. method as claimed in claim 4, it is characterised in that be calculated according to below equation in several second nucleic respectively
Individual second nucleic decay generation is described to simulate the second Geologic Time required during decay energy：
<mrow>
<msub>
<mi>T</mi>
<mi>i</mi>
</msub>
<mo>=</mo>
<mo>-</mo>
<mfrac>
<mrow>
<mi>I</mi>
<mi>n</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>&theta;</mi>
<mi>i</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>I</mi>
<mi>n</mi>
<mn>2</mn>
</mrow>
</mfrac>
<mo>&times;</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mn>1</mn>
<mo>/</mo>
<mn>2</mn>
</mrow>
<mi>i</mi>
</msubsup>
</mrow>
Wherein, TiRepresent that i-th of second nucleic decay generations are described and simulate the second Geologic Time required during decay energy, θi
Represent the simulation nuclear decay ratio corresponding to i-th of second nucleic, T1/2Represent the half-life period of i-th of second nucleic.
6. the method as described in claim 1, it is characterised in that determine that the testing sample irradiates in nuclear reactor and core occurs
The fission energy discharged during fission, including：
Calculate the nucildic mass that nuclear fission occurs for the testing sample irradiation；
According to the situation of change of sample energy before and after the nucildic mass and generation nuclear fission, determine the testing sample in core
The fission energy discharged during nuclear fission occurs for irradiation in reactor.
7. the method as described in claim 1, it is characterised in that determine to be produced when the testing sample irradiates in nuclear reactor
Raw sedimentary energy, including：
According to exposure spots position in nuclear reactor of the physical property of the testing sample, the testing sample, described to be measured
Exposure time of the sample in nuclear reactor, the nuclear reactor physical parameter when testing sample irradiates in nuclear reactor,
Simulation determines caused sedimentary energy when the testing sample irradiates in nuclear reactor.
8. method as claimed in claim 7, it is characterised in that the physical property of the testing sample include it is following at least it
One：Density, volume, thickness and the weight of the testing sample, the nuclear reactor physical parameter include：The particle kind of radiation source
Particle kind when class and/or irradiation.
9. the method as described in claim 1, it is characterised in that it is determined that being passed through during testing sample simulation nuclear decay
After the first Geologic Time gone through, methods described also includes：
According to first Geologic Time, the hydrocarbon potentiality of test sample are determined.
A kind of 10. determining device of Geologic Time, it is characterised in that including：
Decay energy determining module, for determine testing sample natural radionuclide multiple first nucleic in each first
The energy that nucleic is discharged when all decaying；
Fission energy determining module, discharged when irradiating generation nuclear fission in nuclear reactor for determining the testing sample
Fission energy；
Sedimentary energy determining module, caused sedimentary energy during for determining that the testing sample irradiates in nuclear reactor；
Geologic Time determining module, for energy, the core discharged during decay whole according to each first nucleic
Fission energy and the sedimentary energy, determine the first Geologic Time undergone during the testing sample simulation nuclear decay.
11. device as claimed in claim 10, it is characterised in that the Geologic Time determining module includes：
First decay ratio-dependent unit, for distinguishing calculating simulation, decay energy all decays with each first nucleic
When the energy that is discharged between ratio, obtain the simulation nuclear decay ratio corresponding with the multiple first nucleic, wherein,
The simulation decay energy be the fission energy and the sedimentary energy and；
Second decay ratio-dependent unit, for determining to meet some of preset requirement in the multiple simulation nuclear decay ratio
Individual simulation nuclear decay ratio；
Geologic Time computing unit, for meeting the simulation nuclear decay ratio of preset requirement according to described several, it is determined that described
The first Geologic Time undergone during testing sample simulation nuclear decay.
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