CN201749073U - Hydrate acoustical characteristic testing device - Google Patents
Hydrate acoustical characteristic testing device Download PDFInfo
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- CN201749073U CN201749073U CN201020253092.1U CN201020253092U CN201749073U CN 201749073 U CN201749073 U CN 201749073U CN 201020253092 U CN201020253092 U CN 201020253092U CN 201749073 U CN201749073 U CN 201749073U
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- hydrate
- autoclave
- time domain
- proving installation
- acoustic characteristic
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Abstract
The utility model relates to a hydrate acoustical characteristic testing device, which comprises a saturated water preparation kettle and a high-pressure reaction kettle which are communicated with each other through a liquid supply pipe, wherein the saturated water preparation kettle and the high-pressure reaction kettle are connected with a computer processing system through a pressure sensor and a temperature sensor respectively; the high-pressure reaction kettle is provided therein with a time domain reflection probe and a bending element energy converter; the time domain reflection probe is connected with the computer processing system through a time domain detector; the bending element energy converter is connected with the computer processing system through an ultrasonic detector; and the high-pressure reaction kettle is disposed in a water bath which is connected with a temperature control system. By adopting the hydrate acoustical characteristic testing device of the structure, saturation and acoustical characteristic parameters of a hydrate in a test sample can be detected at the same time in the same device.
Description
Technical field
The utility model relates to a kind of proving installation, relates in particular to a kind of hydrate acoustic characteristic proving installation.
Background technology
The relation that contains between sedimental p-and s-wave velocity of hydrate and the hydrate saturation degree is to utilize seismic data the hydrate reservoir to be carried out the basis of resource evaluation.Measuring technique in the time of for p-and s-wave velocity that contains the hydrate consolidated sediment and hydrate saturation degree, prior art has been delivered some achievements in research.But the ocean water compound is composed mostly and is stored in the unconsolidated sediment, how to measure p-and s-wave velocity and the hydrate saturation parameters that contains the hydrate unconsolidated sediment simultaneously, does not also have the technology of this respect at present.
At present, advanced both at home and abroad laboratory utilizes flexure element technical research unconsolidated sediment acoustic characteristic existing, utilize the flexure element technical research as T S Yun of U.S. George's Leah Institute of Technology etc. and contained the acoustic characteristic of tetrahydrofuran (THF) hydrate sediment, but these researchs are carried out under normal pressure mostly, do not see and under high pressure utilize the flexure element technology to survey the research that contains hydrate unconsolidated sediment p-and s-wave velocity simultaneously.Aspect the detection of hydrate saturation degree, Time Domain Reflectometry technology (TDR) is effectively applied to the measurement of fresh water or sedimental water cut of low-solids water and hydrate saturation degree.But experiment is found to utilize traditional TDR probe can't survey the hydrate saturation degree again when the salinity of sediment pore water is higher than 0.5%wt.As seen, measure p-and s-wave velocity and the hydrate saturation degree that contains the hydrate unconsolidated sediment simultaneously, also need to solve TDR saturation degree measuring technology problem under acoustic sounding technology and the high salinity.
The utility model content
Technique effect of the present utility model can overcome above-mentioned defective, and a kind of hydrate acoustic characteristic proving installation is provided, and it is simple in structure, good test effect.
For achieving the above object, the utility model adopts following technical scheme: it comprises that the saturation water that is interconnected by feed liquid pipeline prepares still, autoclave, saturation water prepares still, autoclave and is connected with feeder by steam line respectively, and saturation water prepares still, autoclave and is connected with computer processing system by pressure transducer, temperature sensor respectively; Be provided with Time Domain Reflectometry probe, flexure element transducer in the autoclave, the Time Domain Reflectometry probe is connected with computer processing system by the Time Domain Reflectometry detector, and the flexure element transducer is connected with computer processing system by supersonic reflectoscope; Autoclave is arranged in the water bath, and water bath is connected with temperature control system.
This device has not only arrived the flexure element technology introduction in the acoustic sounding of gas hydrate, and has improved traditional Time Domain Reflectometry probe, makes the Time Domain Reflectometry technology have the ability of test oceanic sediment water cut and hydrate saturation degree.And, these two state-of-the-art technology are integrated in the same system, survey parameters,acoustic and hydrate saturation degree in hydrate generation and the decomposable process simultaneously, can eliminate and in different system, measure parameters,acoustic and the caused systematic error of hydrate saturation degree respectively.The invention of this technology will be significant to the hydrate Research of Acoustic of actual oceanic sediment, and China's hydrate geophysical survey is had important directive significance.
The flexure element transducer is provided with two, and one of them is positioned at the upside of laboratory sample, and another is positioned at the downside of laboratory sample.Technical at flexure element, developed the flexure element transducer of new structure, compressional wave wafer, shear-wave wafer (flexure element) are sealed in the mass that is full of insulating resin by hermetically-sealed construction in the flexure element transducer, have well withstand voltage, water resistance.Two transducers insert the two ends of measured circle cylinder laboratory sample, drive the long semi-girder of 5mm by the flexure element wafer and do that tangential vibrations produces shear wave, the compressional wave wafer is done stretching vibration and produced compressional wave, thereby obtain the integrative ultrasonic of the ripple in length and breadth waveform in the sample.Because it is bigger to contain the acoustic jamming of hydrate sediment sample, the less compressional wave of amplitude is easily disturbed by noise, the frequecy characteristic of the methods analyst compressional wave section of employing spectrum analysis (FFT) is therefore proposed, the frequency of obtaining according to wavelet analysis (WT) method distribution characteristics is in time then determined the time of arrival and the velocity of longitudinal wave of compressional wave.The method (FFT-WT method) that this this spectrum analysis of being proposed of work combines with wavelet analysis all has good effect obtaining of p-and s-wave velocity.
Time Domain Reflectometry probe arranged outside one deck insulating sleeve.Survey aspect the hydrate saturation degree in the Time Domain Reflectometry technology, finds that traditional Time Domain Reflectometry probe can't measure salinity and be higher than 0.5% sedimental water cut and hydrate saturation degree,, solved this problem by improvement Time Domain Reflectometry probe.Hot compress one deck insulating sleeve on the Time Domain Reflectometry probe has reduced the decay that electromagnetic wave is propagated in high salt deposit, make the Time Domain Reflectometry waveform of reflection have the ability of analyzing medium specific inductive capacity and measuring media water cut and hydrate saturation degree.
Autoclave comprises outer cylinder body, and the outer cylinder body inboard is provided with inner barrel, places laboratory sample in the inner barrel, and the Time Domain Reflectometry probe is arranged in the laboratory sample.Feed liquid pipeline is provided with valve, and steam line is provided with valve.Described saturation water prepares still and is communicated with autoclave by pipeline, and valve is set on the pipeline, and the position that saturation water prepares still is higher than autoclave; The top that saturation water prepares still is provided with water inlet pipe and valve, and the bottom that saturation water prepares still is the magnetic agitation instrument fixedly; Feeder is communicated with saturation water respectively by three-way pipe and prepares still and autoclave, and three-way pipe and saturation water prepare valve is set respectively between still, the autoclave.
The sidewall of inner barrel is provided with thermopair, and an end of thermopair is connected with laboratory sample, and the other end of thermopair is connected with computer processing system by temperature sensor.
Adopt the hydrate acoustic characteristic proving installation of this structure, can in same device, survey the saturation degree and the acoustics parameters of hydrate in the laboratory sample simultaneously, adopt gas saturation water technology of preparing simultaneously, it is few that whole experiment consumes the time, can shorten experimental period greatly.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model;
Fig. 2 is a reactor inner structure synoptic diagram of the present utility model.
Embodiment
This device comprises that the saturation water that is interconnected by feed liquid pipeline 3 prepares still 1, autoclave 2, saturation water prepares still 1, autoclave 2 and is connected with feeder 16 by steam line 4 respectively, and saturation water prepares still 1, autoclave 2 and is connected with computer processing system 7 by pressure transducer 5, temperature sensor 6 respectively; Be provided with Time Domain Reflectometry probe 9, flexure element transducer 8 in the autoclave 2, Time Domain Reflectometry probe 9 is connected with computer processing system 7 by Time Domain Reflectometry detector 10, and flexure element transducer 8 is connected with computer processing system 7 by supersonic reflectoscope 11; Autoclave 2 is arranged in the water bath 12, and water bath 12 is connected with temperature control system 13.
Autoclave 2 comprises outer cylinder body 14, and outer cylinder body 14 inboards are provided with inner barrel 15, places laboratory sample 20 in the inner barrel 15, and Time Domain Reflectometry probe 9 is arranged in the laboratory sample 20.Time Domain Reflectometry probe 9 arranged outside one deck insulating sleeves.Flexure element transducer 8 is provided with two, and one of them is positioned at the upside of laboratory sample 22, and another is positioned at the downside of laboratory sample 20.The sidewall of inner barrel 15 is provided with thermopair 17, and an end of thermopair 17 is connected with laboratory sample 20, and the other end of thermopair 17 is connected with computer processing system 7 by temperature sensor 6.The bottom that saturation water prepares still 1 is magnetic agitation instrument 18 fixedly.Feed liquid pipeline 3 is provided with valve 19, and steam line 4 is provided with valve 19.
The position that saturation water prepares still 1 is higher than autoclave 2.Open valve 19, saturated aqueous solution injects in the autoclave 2 by gravity.
Wherein, the design pressure of autoclave 2 is 30MPa, is mainly used in the work such as synthetic, parameter measurement of carrying out hydrate therein.Two thermopairs 17 are arranged in autoclave 2, measure the temperature on sediment laboratory sample 20 inside and surface respectively, measuring accuracy is ± 0.1 ℃.The pressure of autoclave 2 is controlled by control pressurer system, and by the pressure in the pressure transducer measurement autoclave 2 that is connected on the autoclave, pressure measurement accuracy is ± 0.1Mpa.Temperature control system 13 and water bath 12 are used for regulating the temperature in the autoclave 2, by reducing temperature hydrate are generated in the experiment, and the temperature that raises subsequently makes decomposition of hydrate.Data (comprising temperature, pressure, ultrasonic waveform, TDR waveform) all in the experimentation are gathered and record in real time by computer processing system 7.
The hydrate acoustic simulation experimental procedure of oceanic sediment is as follows:
(1) will receive pack into the bottom of autoclave 2 of flexure element transducer 8;
(2) the coaxial Time Domain Reflectometry probe 9 of thimble tube is fixed on the inner barrel 15, and with probe and cylindrical stainless steel coil respectively with the both positive and negative polarity welding of Time Domain Reflectometry concentric cable, then inner barrel 15 is put into autoclave 2;
(3) laboratory sample 20 of oceanic sediment is packed in the inner barrel 15 of autoclave;
(4) build reactor,,, determine the distance of emission, reception flexure element transducer end opposite end simultaneously to guarantee that launching flexure element transducer 8 semi-girders is inserted in the sediment by the position of metallic carrier rod control emission flexure element transducer 8;
(5) use high pressure methane gas flushing autoclave 3-5 time, with the air of emptying the inside;
(6) feed high pressure methane gas, make autoclave 2 internal pressures reach the pressure that experiment is estimated, and about placement 24h methane gas is dissolved in the pore water;
(7) reduce the temperature to 2 of water bath 12 ℃ to form methane hydrate;
(8) treat that hydrate generates and keep stopping temperature control after a period of time, make bath temperature rise decomposition of hydrate;
(9) in the whole experiment, data such as temperature, pressure, ultrasonic waveform and TDR waveform are all by computer processing system 7 real time record.According to the ultrasonic waveform that obtains, utilize above-mentioned FFT-WT method to obtain p-and s-wave velocity; Utilize the TDR waveform to obtain the saturation degree of hydrate in the sediment.
Claims (8)
1. hydrate acoustic characteristic proving installation, it is characterized in that, comprise that the saturation water that is interconnected by feed liquid pipeline prepares still, autoclave, saturation water prepares still, autoclave and is connected with feeder by steam line respectively, and saturation water prepares still, autoclave and is connected with computer processing system by pressure transducer, temperature sensor respectively; Be provided with Time Domain Reflectometry probe, flexure element transducer in the autoclave, the Time Domain Reflectometry probe is connected with computer processing system by the Time Domain Reflectometry detector, and the flexure element transducer is connected with computer processing system by supersonic reflectoscope; Autoclave is arranged in the water bath, and water bath is connected with temperature control system.
2. hydrate acoustic characteristic proving installation according to claim 1 is characterized in that autoclave comprises outer cylinder body, and the outer cylinder body inboard is provided with inner barrel, places laboratory sample in the inner barrel, and the Time Domain Reflectometry probe is arranged in the laboratory sample.
3. hydrate acoustic characteristic proving installation according to claim 2 is characterized in that, Time Domain Reflectometry probe arranged outside one deck insulating sleeve.
4. hydrate acoustic characteristic proving installation according to claim 2 is characterized in that the flexure element transducer is provided with two, and one of them is positioned at the upside of laboratory sample, and another is positioned at the downside of laboratory sample.
5. hydrate acoustic characteristic proving installation according to claim 2 is characterized in that the sidewall of inner barrel is provided with thermopair, and an end of thermopair is connected with laboratory sample, and the other end of thermopair is connected with computer processing system by temperature sensor.
6. hydrate acoustic characteristic proving installation according to claim 1 is characterized in that, the bottom that saturation water prepares still is the magnetic agitation instrument fixedly.
7. hydrate acoustic characteristic proving installation according to claim 1 is characterized in that feed liquid pipeline is provided with valve.
8. hydrate acoustic characteristic proving installation according to claim 1 is characterized in that steam line is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020253092.1U CN201749073U (en) | 2010-07-01 | 2010-07-01 | Hydrate acoustical characteristic testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020253092.1U CN201749073U (en) | 2010-07-01 | 2010-07-01 | Hydrate acoustical characteristic testing device |
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| CN201749073U true CN201749073U (en) | 2011-02-16 |
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| CN201020253092.1U Expired - Fee Related CN201749073U (en) | 2010-07-01 | 2010-07-01 | Hydrate acoustical characteristic testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042948A (en) * | 2010-07-01 | 2011-05-04 | 青岛海洋地质研究所 | Device for testing hydrate acoustic properties |
| CN102778508A (en) * | 2012-07-24 | 2012-11-14 | 中国科学院广州能源研究所 | Device for in-situ synthesis and sound characteristic measuring of hydrate in deposits |
| CN103424532A (en) * | 2012-05-22 | 2013-12-04 | 青岛海洋地质研究所 | Experiment device for researching structural characteristics of hydrate-containing deposit velocity profile |
| CN106950832A (en) * | 2017-03-08 | 2017-07-14 | 杭州电子科技大学 | A kind of ultrasonic disperse control device and method of utilization cavitation intensity feedback |
| CN108169050A (en) * | 2017-12-28 | 2018-06-15 | 黑龙江科技大学 | A kind of Gas Hydrate saturation degree monitoring device |
-
2010
- 2010-07-01 CN CN201020253092.1U patent/CN201749073U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042948A (en) * | 2010-07-01 | 2011-05-04 | 青岛海洋地质研究所 | Device for testing hydrate acoustic properties |
| CN103424532A (en) * | 2012-05-22 | 2013-12-04 | 青岛海洋地质研究所 | Experiment device for researching structural characteristics of hydrate-containing deposit velocity profile |
| CN103424532B (en) * | 2012-05-22 | 2016-04-20 | 青岛海洋地质研究所 | Containing the experimental provision of hydrate sediment velocities cross-section structure characteristic research |
| CN102778508A (en) * | 2012-07-24 | 2012-11-14 | 中国科学院广州能源研究所 | Device for in-situ synthesis and sound characteristic measuring of hydrate in deposits |
| CN106950832A (en) * | 2017-03-08 | 2017-07-14 | 杭州电子科技大学 | A kind of ultrasonic disperse control device and method of utilization cavitation intensity feedback |
| CN108169050A (en) * | 2017-12-28 | 2018-06-15 | 黑龙江科技大学 | A kind of Gas Hydrate saturation degree monitoring device |
| CN108169050B (en) * | 2017-12-28 | 2020-04-07 | 黑龙江科技大学 | Gas hydrate saturation monitoring devices |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20120701 |