CN104897854A - Experiment method and experiment device for decomposing hydrate - Google Patents
Experiment method and experiment device for decomposing hydrate Download PDFInfo
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- CN104897854A CN104897854A CN201510282569.6A CN201510282569A CN104897854A CN 104897854 A CN104897854 A CN 104897854A CN 201510282569 A CN201510282569 A CN 201510282569A CN 104897854 A CN104897854 A CN 104897854A
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Abstract
The invention discloses an experiment method and an experiment device for decomposing hydrate. The method comprises the following steps: loading hydrate sediment particles into a packing pipeline, pushing into a pressure chamber and spraying water into the pipeline, wherein the ratio of the water velocity to the advance velocity of the hydrate sediment particles has to ensure that the volume mixing ratio of water to the hydrate sediment particles is 7 to 3 or above; mixing the hydrate sediment particles in the pressure container with water to promote decomposition of hydrate; simultaneously measuring the temperature and pressure distribution in the pressure chamber; after the hydrate sediment particles in the pressure chamber are decomposed, enabling the gas and water to flow up to the outside through a filter screen; precipitating soil particles to the bottom of the pressure chamber, recording the quantity of the gas, water and soil particles; after decomposing of the hydrate sediment particles is finished, sucking the soil particles out of the pressure chamber; pulling a piston out of the pipeline and refilling the hydrate sediment particles; and repeating the steps to finish the experiment of decomposing the hydrate sediment particles in a way of mixing with water.
Description
Technical field
The present invention relates to natural gas hydrate production technique, especially a kind of decomposition of hydrate experimental technique and experimental provision.
Background technology
Gas hydrate are unconventional energy resource resources that a kind of reserves are huge, clean, one of strategic energy of Ye Shi China.In the world, in hydrate examination recovery process, conventional employing step-down, heat injection technology production of water compound, but the production efficiency of above-mentioned technology is very low.
Summary of the invention
The invention provides a kind of decomposition of hydrate experimental technique and experimental provision, for overcoming defect of the prior art, improving the production efficiency of hydrate.
The invention provides a kind of decomposition of hydrate experimental technique, comprise the following steps:
Step 1, by hydrate sediment particle loading pipe road, pushes in Pressure chamber, sprays into water in pipeline simultaneously; The temperature of water is between 5 DEG C ~ 30 DEG C, and the ratio of water velocity and hydrate sediment particle fltting speed makes the volumetric mixture ratio of water and hydrate sediment particle at more than 7:3;
Step 2, mixes the hydrate sediment particle in Pressure chamber with water, impels decomposition of hydrate; Measure temperature and pressure distribution in Pressure chamber simultaneously, decomposition of hydrate information is provided;
Step 3, after hydrate sediment particle decomposes in Pressure chamber, gas and water are upwards flowed out by screen pack, and soil particle sinks bottom Pressure chamber, the amount of record gas, water and soil particle;
Step 4, after hydrate sediment particle breakdown terminates, by the soil particle sucking-off in Pressure chamber;
Step 5, pulls out ducted piston, again fills hydrate sediment particle, repeats above-mentioned steps 1 ~ step 4 process, completes the experiment that hydrate sediment particle and water blending are decomposed.
Preferably, the granularity of described hydrate sediment particle is between 1mm ~ 10mm.
Preferably, the pressure in described Pressure chamber is between 8MPa ~ 12MPa.
The present invention also provides a kind of decomposition of hydrate experimental provision, comprising:
Pipeline, one end is closed, and one end is connected with Pressure chamber, and for holding hydrate sediment particle, inside is provided with can move along described inner-walls of duct under external force and hydrate sediment particle be pushed the piston of described Pressure chamber;
Pump, output terminal is connected with described piston, and provides the driving force of constant speed and constant pressure;
Water system, has at least one injection orifice, and described injection orifice is arranged, for spraying into water jet in described pipeline along the length direction of described pipeline;
Pressure chamber, for decomposition of hydrate provides space, inside is provided with stirrer, for the hydrate sediment particle in it and water being stirred;
Air collecting pipe, for gathering gas and water, being arranged on described Pressure chamber top, being provided with permeable stone bottom air collecting pipe.
Preferably, also comprise soil suction device, be arranged on bottom described Pressure chamber, by repeatedly will the soil particle sucking-off bottom described Pressure chamber be deposited on to described Pressure chamber inside bath and sucking-off.
Preferably, described Pressure chamber sidewall is provided with temperature sensor.
Decomposition of hydrate experimental technique provided by the invention and experimental provision, soil in hydrate deposit is gathered as fine particles with the potpourri of hydrate, by piston propelling and water jet mode, fine grained is loaded in pressure warehouse, auxiliary blending again, stirring etc. makes decomposition of hydrate, hydrate sediment can be realized fine grain without interruption, water jet can be passed through again, the decomposition of hydrate is accelerated in blending stirrings etc., for hydrate high-efficiency mining method provides technical support, at convection heat transfer' heat-transfer by convection, the engineerings such as multi-phase separation and technical field also have potential using value.
Accompanying drawing explanation
The structural representation of the decomposition of hydrate experimental provision that Fig. 1 provides for the embodiment of the present invention.
Embodiment
See Fig. 1, the invention provides a kind of decomposition of hydrate experimental technique, comprise the following steps:
Step 1, by in hydrate sediment particle loading pipe road 1, then opening constant speed and constant pressure pump 2 can with constant speed and pressure propelling piston 3, make the ducted hydrate sediment particle of stainless steel helices constantly to feed in Pressure chamber 4, open water system 5 simultaneously and spray into high speed and high pressure water jet in Pressure chamber 4, the temperature of water between 5 DEG C-30 DEG C, water velocity and soil particle fltting speed proportional thus ensure that the volumetric mixture ratio of water and hydrate sediment particle is at more than 7:3; With filler pipe diameter for 4cm, piston fltting speed 0.3m/s, jet orifice diameter 5mm is example, and the speed spraying into water to pipeline is about 45m/s.
Step 2, the stirrer 6 in opening pressure storehouse 4, by the hydrate sediment particle in Pressure chamber and water Homogeneous phase mixing, impels decomposition of hydrate; Measure temperature and pressure distribution in Pressure chamber 4 respectively by temperature sensor 7 and pressure transducer 8 simultaneously, decomposition of hydrate information is provided;
Step 3, after hydrate sediment particle decomposes in Pressure chamber, gas and water are upwards flowed out through air collecting pipe 10 by screen pack 9, and soil particle sinks bottom Pressure chamber 4, the amount of record gas, water and soil particle;
Step 4, after hydrate sediment particle breakdown terminates, by the soil particle in Pressure chamber 4 by soil suction device 11 sucking-off.
Step 5, pulls out stainless for the piston 3 in the pipeline 1 of filler, again fills hydrate sediment particle, repeats above-mentioned steps 1 ~ step 4 process, completes the experiment that hydrate sediment particle and water blending are decomposed.
In above-described embodiment, the granularity of hydrate sediment particle is between 1mm ~ 10mm.Pressure in Pressure chamber is between 8MPa ~ 12MPa.Be preferably 10MPa.
The embodiment of the present invention also provides a kind of decomposition of hydrate experimental provision, see Fig. 1, comprising:
Pipeline 1, one end is closed, and one end is connected with Pressure chamber 4, and for holding hydrate sediment particle, inside is provided with can move along pipeline 1 inwall under external force and hydrate sediment particle be pushed the piston of Pressure chamber 4; Adopt stainless steel in the present embodiment, corrosion resistant performance is strong.
Constant speed and constant pressure pump 2, output terminal is connected with piston 3, and provides the driving force of constant speed and constant pressure;
Water system 5, has at least one injection orifice, and injection orifice is arranged along the length direction of pipeline, for spraying into high speed and high pressure water jet in pipeline; Water jet mixes with the hydrate sediment particle in stainless steel helices pipeline, and reduces the resistance of hydrate sediment particle and stainless steel helices duct wall when piston advances;
Pressure chamber 4, for decomposition of hydrate provides space, inside is provided with stirrer 6, for the hydrate sediment particle in it and water being stirred; Pressure chamber 4 sidewall is provided with temperature sensor 7 and pressure transducer 8;
Air collecting pipe 10, for gathering gas and water, being arranged on Pressure chamber 4 top, being provided with permeable stone 9 bottom air collecting pipe 6.
In above-described embodiment, experimental provision also comprises soil suction device 11, is arranged on bottom Pressure chamber 4, by jet water pump 12 repeatedly to the bath of Pressure chamber 4 inside, is more repeatedly inhaled will be deposited on the soil particle sucking-off bottom Pressure chamber by suction pump.
Stirrer 6 improves the Homogeneous phase mixing of hydrate sediment particle and water and the surface area contacted, after decomposition of hydrate, gas and water flow to top air collecting pipe 10 by screen pack 9 (only allowing gas and penetration by water), soil particle then sinks to the bottom of Pressure chamber 4, after the hydrate sediment particle breakdown of once carrying at stainless steel helices pipeline terminates, open soil suction device 11.
Decomposition of hydrate experimental technique provided by the invention and experimental provision, soil in hydrate deposit is gathered as fine particles with the potpourri of hydrate, by piston propelling and water jet mode, fine grained is loaded in pressure warehouse, auxiliary blending again, stirring etc. makes decomposition of hydrate, hydrate sediment can be realized fine grain without interruption, water jet can be passed through again, the decomposition of hydrate is accelerated in blending stirrings etc., for hydrate high-efficiency mining method provides technical support, at convection heat transfer' heat-transfer by convection, the engineerings such as multi-phase separation and technical field also have potential using value.
Claims (6)
1. a new decomposition of hydrate experimental technique, is characterized in that, comprise the following steps:
Step 1, by hydrate sediment particle loading pipe road, pushes in Pressure chamber, sprays into water in pipeline simultaneously; The temperature of water is between 5 DEG C ~ 30 DEG C, and the ratio of water velocity and hydrate sediment particle fltting speed makes the volumetric mixture ratio of water and hydrate sediment particle at more than 7:3;
Step 2, mixes the hydrate sediment particle in Pressure chamber with water, impels decomposition of hydrate; Measure temperature and pressure distribution in Pressure chamber simultaneously, decomposition of hydrate information is provided;
Step 3, after hydrate sediment particle decomposes in Pressure chamber, gas and water are upwards flowed out by screen pack, and soil particle sinks bottom Pressure chamber, the amount of record gas, water and soil particle;
Step 4, after hydrate sediment particle breakdown terminates, by the soil particle sucking-off in Pressure chamber;
Step 5, pulls out ducted piston, again fills hydrate sediment particle, repeats above-mentioned steps 1 ~ step 4 process, completes the experiment that hydrate sediment particle and water blending are decomposed.
2. decomposition of hydrate experimental technique according to claim 1, is characterized in that, the granularity of described hydrate sediment particle is between 1mm ~ 10mm.
3. decomposition of hydrate experimental technique according to claim 1 and 2, is characterized in that,
Pressure in described Pressure chamber is between 8MPa ~ 12MPa.
4. a decomposition of hydrate experimental provision, is characterized in that, comprising:
Pipeline, one end is closed, and one end is connected with Pressure chamber, and for holding hydrate sediment particle, inside is provided with can move along described inner-walls of duct under external force and hydrate sediment particle be pushed the piston of described Pressure chamber;
Pump, output terminal is connected with described piston, and provides the driving force of constant speed and constant pressure;
Water system, has at least one injection orifice, and described injection orifice is arranged, for spraying into water jet in described pipeline along the length direction of described pipeline;
Pressure chamber, for decomposition of hydrate provides space, inside is provided with stirrer, for the hydrate sediment particle in it and water being stirred;
Air collecting pipe, for gathering gas and water, being arranged on described Pressure chamber top, being provided with screen pack bottom air collecting pipe.
5. decomposition of hydrate experimental provision according to claim 4, is characterized in that, also comprises soil suction device, is arranged on bottom described Pressure chamber, by being repeatedly deposited on the soil particle sucking-off bottom described Pressure chamber to described Pressure chamber inside bath and sucking-off.
6. the decomposition of hydrate experimental provision according to claim 4 or 5, is characterized in that, described Pressure chamber sidewall is provided with temperature sensor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352840A (en) * | 2015-10-23 | 2016-02-24 | 西南石油大学 | Apparatus for measuring decomposition rate of natural gas hydrate and method thereof |
| CN105699247A (en) * | 2016-03-04 | 2016-06-22 | 西南石油大学 | Experimental method for synthesizing and decomposing natural gas hydrate and experiment system |
| CN107703034A (en) * | 2017-07-28 | 2018-02-16 | 中国科学院力学研究所 | The experimental provision of two-phase flow measurement containing fine grained and experimental method in a kind of tubule network |
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| CN201747338U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Natural gas hydrate simulating mining experimental apparatus |
| CN103015959A (en) * | 2012-11-29 | 2013-04-03 | 中国科学院力学研究所 | Mechanical-thermal hydrate exploiting method |
| CN103628844A (en) * | 2013-11-21 | 2014-03-12 | 中国海洋石油总公司 | Method for green mining of natural gas hydrate of shallow non-diagenesis stratum of deep seabed |
| CN203758981U (en) * | 2013-12-17 | 2014-08-06 | 中国海洋石油总公司 | Visual simulation test device for natural gas hydrate |
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2015
- 2015-05-28 CN CN201510282569.6A patent/CN104897854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747338U (en) * | 2010-07-01 | 2011-02-16 | 青岛海洋地质研究所 | Natural gas hydrate simulating mining experimental apparatus |
| CN103015959A (en) * | 2012-11-29 | 2013-04-03 | 中国科学院力学研究所 | Mechanical-thermal hydrate exploiting method |
| CN103628844A (en) * | 2013-11-21 | 2014-03-12 | 中国海洋石油总公司 | Method for green mining of natural gas hydrate of shallow non-diagenesis stratum of deep seabed |
| CN203758981U (en) * | 2013-12-17 | 2014-08-06 | 中国海洋石油总公司 | Visual simulation test device for natural gas hydrate |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352840A (en) * | 2015-10-23 | 2016-02-24 | 西南石油大学 | Apparatus for measuring decomposition rate of natural gas hydrate and method thereof |
| CN105352840B (en) * | 2015-10-23 | 2018-05-25 | 西南石油大学 | A kind of gas hydrate dissociation rate determination device and method |
| CN105699247A (en) * | 2016-03-04 | 2016-06-22 | 西南石油大学 | Experimental method for synthesizing and decomposing natural gas hydrate and experiment system |
| CN105699247B (en) * | 2016-03-04 | 2019-01-29 | 西南石油大学 | A kind of synthesis of gas hydrates and decomposition experiment method and experimental system |
| CN107703034A (en) * | 2017-07-28 | 2018-02-16 | 中国科学院力学研究所 | The experimental provision of two-phase flow measurement containing fine grained and experimental method in a kind of tubule network |
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| CN104897854B (en) | 2016-08-03 |
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