CN110530902A - A kind of gas hydrates component migration PET imaging method - Google Patents
A kind of gas hydrates component migration PET imaging method Download PDFInfo
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- CN110530902A CN110530902A CN201910790266.3A CN201910790266A CN110530902A CN 110530902 A CN110530902 A CN 110530902A CN 201910790266 A CN201910790266 A CN 201910790266A CN 110530902 A CN110530902 A CN 110530902A
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- gas hydrates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
Abstract
The present invention provides a kind of imaging method that can be identified gas hydrates decompression and decompose transport process, it is imaged to containing hydrate sediment decompression response process, containing computational fluid dynamics transport process in hydrate sediment, is conducive to scientific knowledge to hydrate reservoir gas generation process.It is characterized in that with the liquid composition in positron radioactivity fluorine nucleic 18F label combustible ice system, form fluorine solution, the negative electron in positive electron and water that fluorine nucleic emits when decaying is buried in oblivion, two γ photons (511keV) for being mutually 180 degree are generated in the form of energy, γ photon penetration capacity is strong, with self-collimation characteristic, and nucleic decay situation is not influenced by laboratory Temperature-pressure Conditions, after these pairs of annihilation photons are detected by pet detector, data recombination image reconstruction identifies the component migration process in combustible ice system.
Description
Technical field gas hydrates experimental technique field
It is to realize that gas hydrates are efficiently opened that background technique, which understands the decompression of gas hydrates reservoir to decompose transport process,
The key adopted, gas hydrates reservoir produce the governing factor of gas, fluid migration mould to the response process of decompression, decomposition of hydrate
Key issues of formula, requires to be studied by effective observation method.At present for the means of hydrate imaging observation
Mainly there are conventional X-ray CT, Magnetic resonance imaging etc., the content of research is sunk with material composition containing hydrate sediment, containing hydrate
In product object based on the synthesis of the occurrence form, hydrate of hydrate and decomposable process etc., and focus on dropping containing hydrate sediment
Press response process, the research containing computational fluid dynamics transport process in hydrate sediment very limited, this is primarily due to lack good
Good mass signatures and tracer technique means.The imaging observations such as X-ray CT, Magnetic resonance imaging technology can only provide sample interior knot
The information such as structure, material composition without dynamic characterize the migration process of sample interior specific components, therefore can not be used to study
Transport process is decomposed in the decompression of gas hydrates reservoir, constrains the understanding to hydrate reservoir gas generation process.
The summary of the invention present invention provides a kind of imaging side that can be identified gas hydrates decompression and decompose transport process
Method is imaged, favorably to containing hydrate sediment decompression response process, containing computational fluid dynamics transport process in hydrate sediment
In scientific knowledge to hydrate reservoir gas generation process.It is characterized in that with positron radioactivity fluorine nucleic18F is marked in combustible ice system
Liquid composition, form fluorine solution, negative electron when fluorine nucleic decays in the positive electron and water that emit is buried in oblivion, with energy
Form generates two γ photons (511keV) for being mutually 180 degree, and γ photon penetration capacity is strong, has self-collimation characteristic, and nucleic
Decay situation is not influenced by laboratory Temperature-pressure Conditions, after these pairs of annihilation photons are detected by pet detector, data weight
Group image reconstruction, identifies the component migration process in combustible ice system.
The main technical schemes of gas hydrates phase-state change imaging method are made of two parts: gas hydrates
Preparation and exploitation simulation integrated apparatus, nucleic PET detecting and imaging device.Gas hydrates preparation and exploitation simulation integration
Device characteristic are as follows: gas hydrates reaction kettle 1, high sealing interface 2, temperature and pressure monitoring client 3, fluid circulating line 4, gas circulation
Pipeline 5, methane gas storage tank 6, pressure control terminal 7, fluid collection end 8；Nucleic PET detecting and imaging device feature are as follows: PET is visited
Device 9 is surveyed, detector fixed ring 10 and testing stand 11 are constituted.The research object of test is methane hydrate, and methane gas is stored in
In methane gas storage tank 6, gas hydrates reaction kettle 1 is transported to by gas circulation line 5 and carries out gas water in situ
The synthesis of object is closed, radionuclide is added before test in gas hydrates reaction kettle 1 makes it participate in lanthanum chloride hydrate process
And play the role of trace labelling, and the synthesis that high sealing interface 2 ensures to be hydrated and the leakage for avoiding radionuclide, pressure control
The pressure change of 7 control gas hydrates reaction kettle 1 of end, gas water is collected by fluid circulating line 4 in fluid collection end 8
The liquid component flowed out in object reaction kettle 1 is closed, gas hydrates reaction kettle 1 is placed on testing stand 11, temperature and pressure monitoring client 3 is real
When monitoring gas hydrates reaction kettle 1 in be temperature and pressure condition, the fluorine solution transmitting in gas hydrates reaction kettle 1
Optical signal out is received by pet detector 9, and the position of pet detector 9 is fixed by detector fixed ring 10, final to realize naturally
The imaging of transport process is decomposed in gas hydrate decompression.
Basic principle and technology positron-emitting radionuclides can emit positive electron, the quality and electricity of positive electron in decay
Son is equal, and electricity is equal with the electricity of electronics, and symbol is opposite.Generation two can be fallen into oblivion after positive electron encounters electronics is mutually 180
The γ photon (511keV) of degree, γ photon by photomultiplier tube (PMT) is converted into electric signal after being detected by detector, at signal
Image reconstruction is realized after reason data reconstruction.Using the principle, fluorine solution is formed with fluorine isotope labeling water, realizes gas hydrates
The liquid mark of system, by changing the imaging of Temperature-pressure Conditions researching natural gas studies of natural gas hydrate dissociation by depressurization in different scale hydrate reservoirs transport process, in-depth drop
Press off the cognition for transporting rule for adopting middle decomposition of hydrate product in reservoir.
The main technical schemes of gas hydrates component migration imaging method are made of two parts: gas hydrates
Preparation and exploitation simulation integrated apparatus, nucleic PET detecting and imaging device.
Gas hydrates preparation and exploitation simulation integrated apparatus feature are as follows: prepared by gas hydrates and exploited mould
Quasi- integrated apparatus feature are as follows: gas hydrates reaction kettle 1, high sealing interface 2, temperature and pressure monitoring client 3, fluid circulating line 4,
Gas circulation line 5, methane gas storage tank 6, pressure control terminal 7 and fluid collection end 8 are constituted.Methane gas is stored in methane
In gas storage tanks 6, gas hydrates reaction kettle 1 is transported to by gas circulation line 5 and carries out gas hydrates in situ
Synthesis, test before in gas hydrates reaction kettle 1 be added radionuclide make its participate in lanthanum chloride hydrate process and rise
To the effect of trace labelling, high sealing interface 2 ensures the synthesis of hydration and avoids the leakage of radionuclide, pressure control terminal 7
The pressure change of gas hydrates reaction kettle 1 is controlled, natural gas hydration is collected by fluid circulating line 4 in fluid collection end 8
The liquid component flowed out in object reaction kettle 1.
Nucleic PET detecting and imaging device feature are as follows: by pet detector 9, detector fixed ring 10 and testing stand 11 are constituted.
Gas hydrates reaction kettle 1 is placed on testing stand 11, in 3 real-time monitoring gas hydrates reaction kettle 1 of temperature and pressure monitoring client
For temperature and pressure condition, the optical signal that the fluorine solution in gas hydrates reaction kettle 1 is launched is received by pet detector 9,
The position of pet detector 9 is fixed by detector fixed ring 10, it is final realize gas hydrates decompression decompose transport process at
Picture.
Detailed description of the invention Fig. 1 is gas hydrates component migration PET imaging system models figure；
1: gas hydrates reaction kettle；2: high sealing interface；3: temperature and pressure monitoring client；4: fluid circulating line；5: gas
Circulation line；6: methane gas storage tank；7: pressure control terminal；8: fluid collection end；9:PET detector；10: detector is fixed
Ring；11: testing stand；
The methane gas being stored in methane gas storage tank is passed through gas circulation line first by specific embodiment 1.
It is transported to the synthesis that gas hydrates reaction kettle carries out gas hydrates in situ.In gas hydrates reaction kettle before test
Middle addition radionuclide makes it participate in lanthanum chloride hydrate process and plays the role of trace labelling, and high sealing interface ensures to be hydrated
Synthesis and avoid the leakage of radionuclide.
2. controlling the pressure change of gas hydrates reaction kettle by pressure control terminal, fluid collection end is followed by fluid
Collect the liquid component flowed out in gas hydrates reaction kettle in endless tube road.
3. gas hydrates reaction kettle is placed on testing stand, the reaction of temperature and pressure monitoring client real-time monitoring gas hydrates
It is temperature and pressure condition in kettle, the optical signal that the fluorine solution in gas hydrates reaction kettle is launched is connect by pet detector
Receive, the position of pet detector fixed by detector fixed ring, it is final realize gas hydrates decompression decompose transport process at
Picture.
Claims (1)
1. one kind can identify the imaging method of gas hydrates component migration, it is divided into two parts and constitutes: natural gas hydration
Object preparation and exploitation simulation integrated apparatus, nucleic PET detecting and imaging device part；The gas hydrates preparation and exploitation
Simulate integrated apparatus feature are as follows: by (1) gas hydrates reaction kettle, (2) high sealing interface, (3) temperature and pressure monitoring client, (4)
Fluid circulating line, (5) gas circulation line, (6) methane gas storage tank, (7) pressure control terminal and (8) fluid collection end structure
At methane gas is stored in (6) methane gas storage tank, is transported to (1) gas hydrates by (5) gas circulation line
Reaction kettle carries out the synthesis of gas hydrates in situ, and radioactive nucleus is added in (1) gas hydrates reaction kettle before test
Element makes it participate in lanthanum chloride hydrate process and plays the role of trace labelling, and the synthesis that (2) high sealing interface ensures to be hydrated simultaneously is kept away
Exempt from the leakage of radionuclide, (7) pressure control terminal controls the pressure change of (1) gas hydrates reaction kettle, and (8) fluid is received
Collection end the liquid component flowed out in (1) gas hydrates reaction kettle is collected by (4) fluid circulating line；Nucleic PET detection
Imaging device feature are as follows: by (9) pet detector, (10) detector fixed ring and (11) testing stand are constituted, by (1) gas water
It closes object reaction kettle to be placed on testing stand, is temperature and pressure in (3) temperature and pressure monitoring client real-time monitoring (1) gas hydrates reaction kettle
Power condition, the optical signal that the fluorine solution in (1) gas hydrates reaction kettle is launched are received by (9) pet detector, (9) PET
The position of detector is fixed by (10) detector fixed ring, it is final realize gas hydrates decompression decompose transport process at
Picture.
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| CN201910790266.3A CN110530902B (en) | 2019-08-26 | 2019-08-26 | PET imaging method for natural gas hydrate component migration |
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| CN110530902B CN110530902B (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289318A (en) * | 2020-01-19 | 2020-06-16 | 浙江大学 | Preparation method of supergravity visual high-transparency fluorescent tracing natural gas hydrate test material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424734A (en) * | 2016-01-12 | 2016-03-23 | 大连理工大学 | Low-temperature high-pressure control device for observing aquo-complex generation and decomposition characteristics through X-ray CT device |
| CN105748093A (en) * | 2015-12-28 | 2016-07-13 | 南京信息工程大学 | Human brain local water distribution volume determining method taking cerebra gray matter as reference region |
| CN105997120A (en) * | 2015-12-28 | 2016-10-12 | 南京信息工程大学 | Human brain local water distribution volume measuring method using first A% region as reference region |
| CN105606634B (en) * | 2016-01-12 | 2018-02-16 | 大连理工大学 | The device of gas hydrates growth characteristics in a kind of observation blind pipe for X ray CT equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105748093A (en) * | 2015-12-28 | 2016-07-13 | 南京信息工程大学 | Human brain local water distribution volume determining method taking cerebra gray matter as reference region |
| CN105997120A (en) * | 2015-12-28 | 2016-10-12 | 南京信息工程大学 | Human brain local water distribution volume measuring method using first A% region as reference region |
| CN105424734A (en) * | 2016-01-12 | 2016-03-23 | 大连理工大学 | Low-temperature high-pressure control device for observing aquo-complex generation and decomposition characteristics through X-ray CT device |
| CN105606634B (en) * | 2016-01-12 | 2018-02-16 | 大连理工大学 | The device of gas hydrates growth characteristics in a kind of observation blind pipe for X ray CT equipment |
Non-Patent Citations (4)
| Title |
|---|
| 《SCIENTIFIC REPORTS》: "Geometric Heterogeneity of Continental Shale in the Yanchang Formation, Southern Ordos Basin, China", 《SCIENTIFIC REPORTS》 * |
| J YANG ET AL.: "Development of a hydrate inhibition monitoring system by integration of acoustic velocity and electrical conductivity measurements", 《SUBESEA PIPELINES》 * |
| OLIVIA J ET AL.: ""High Single Doses of Radiation May Induce Elevated Levels of Hypoxia in Early-Stage Non-Small Cell Lung Cancer Tumors"", 《INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS》 * |
| SEUNGMIN LEE ET AL.: "Phase Behavior and 13C NMR Spectroscopic Analysis of the Mixed Methane + Ethane + Propane Hydrates in Mesoporous Silica Gels", 《THE JOURNAL OF PHYSICAL CHEMISTRY B》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289318A (en) * | 2020-01-19 | 2020-06-16 | 浙江大学 | Preparation method of supergravity visual high-transparency fluorescent tracing natural gas hydrate test material |
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