CN102042947A - Natural gas hydrate permeability simulation experimental device - Google Patents
Natural gas hydrate permeability simulation experimental device Download PDFInfo
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- CN102042947A CN102042947A CN 201010222091 CN201010222091A CN102042947A CN 102042947 A CN102042947 A CN 102042947A CN 201010222091 CN201010222091 CN 201010222091 CN 201010222091 A CN201010222091 A CN 201010222091A CN 102042947 A CN102042947 A CN 102042947A
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Abstract
The invention relates to an experimental device, in particular to a natural gas hydrate permeability simulation experimental device. The natural gas hydrate permeability simulation experimental device comprises a reaction displacement container and a saturated water container, wherein one end of the reaction displacement container is communicated with the saturated water container through a back pressure valve; the other end of the reaction displacement container is communicated with the saturated water container through a heat exchanger and a plunger pump; and the saturated water container is connected with a high-pressure air supply device. Through the experiment and the measurement of the natural gas hydrate permeability by a device system, permeability parameters of the natural gas hydrate can be simulated effectively so as to provide the basis for the mining of the natural gas hydrate.
Description
Technical field
The present invention relates to a kind of experimental provision, relate in particular to a kind of gas hydrate permeability analogue experiment installation.
Background technology
Permeability is the parameter of reflection Porous Media ability, is to influence the key factor that gas hydrate decompose the back speed of production.Gas hydrate seepage flow is a non-isothermal physical chemistry flow event of multi-phase multi-component, and this process has comprised the complicated factors such as variation of phase transformation, reservoir medium physical property.The seepage flow feature of hydrate reservoir directly influences migration, the ability of aggregation of natural G﹠W in sediment, thus the formation of control hydrate.And hydrate is hidden in the recovery process, and gas and the seepage flow of water in porous medium that decomposition of hydrate produces then may have influence on the feasibility of exploitation and the recovery ratio of rock gas.Research to gas hydrate reservoir seepage flow feature at present also is in the stage of continuing to use oil, air infiltration stream theoretical explanation, and the seepage flow mechanism of gas hydrate also is not fully aware of.
Measurement about permeability mainly appears at petroleum gas and coal industry.The relevant permeability measured data that contains the hydrate sedimentary deposit is very rare, this stable condition with hydrate is relevant, because the stable existence of hydrate needs low temperature and high pressure, therefore conventional measuring instrument for permeability rate is not well suited for, and needs the special experimental provision of design.The H Minagawa of Japan sophisticated technologies research institute etc. designed and produced a covering device, carried out the experimental study of hydrate permeability in four kinds of different arenaceous sediment things.But this device can not be measured the saturation degree of hydrate in real time, only controls the generation total amount of hydrate by the water of sneaking into different amounts in sand grains, thus the saturation degree of estimation hydrate.
Summary of the invention
Technique effect of the present invention can overcome above-mentioned defective, and a kind of gas hydrate permeability analogue experiment installation is provided, and it is simple in structure, and experiment effect is good.
For achieving the above object, the present invention adopts following technical scheme: it comprises reaction displacement container, saturation water container, one end of reaction displacement container is communicated with the saturation water container by counterbalance valve, and the other end of reaction displacement container is communicated with the saturation water container by heat interchanger, constant-flux pump; The saturation water container connects the high-pressure air feed device.
This invention is used for testing the relation of desk research sediment gas hydrate saturation degree and permeability, can disclose on the one hand the seepage flow mechanism that hydrate is hidden, and also provides underlying parameter for the exploratory development of hydrate on the other hand.Reaction displacement container in the device can be realized the generation and the permeability survey two big functions of gas hydrate, simultaneously Time Domain Reflectometry technology and differential pressure measurement technology are organically combined, in same system, measure gas hydrate saturation degree and permeability in the sediment, draw reliably, experimental data accurately.Detection system is made up of differential pressure Detection Techniques and TDR technology, can carry out differential pressure detection and Time Domain Reflectometry (TDR) simultaneously and survey.
The characteristics of this cover experimental provision are the designs of reaction displacement container, and reaction displacement container can be finished the generation and the displacement test two big functions of hydrate, and promptly hydrate can carry out displacement test after generating immediately, measures the permeability under this kind state.The heat conductive rubber cover is housed between container inner wall and laboratory sample, and purpose is fluid passage possible between blocking experiment sample and container inner wall, passes through from the inside of laboratory sample to guarantee displacement liquid.
Reaction displacement container is provided with Time Domain Reflectometry probe and pressure transducer, in the reaction displacement container laboratory sample is set, and the two ends, the left and right sides of laboratory sample are provided with and compress filtration unit, guarantee the sedimentary particle in the rock core not to be brought out in the displacement test process.The outside of reaction displacement container is provided with cooling water jecket.Internal tank is equipped with the different parallel metal Time Domain Reflectometry probe of two Gents, carries out the mensuration of gas hydrate saturation degree in the rock core; The Time Domain Reflectometry probe adopts the stainless-steel tube of hollow to make, and the Pt100 thermal resistance is installed in inside, is used for surveying the temperature of rock core diverse location.
The saturation water container bottom is provided with magnetic stirring apparatus, by the drive of magnetic stirring apparatus, can make methane gas under high pressure dissolve in advance and reach capacity, the solution that will contain saturated methane gas by constant-flux pump injects reaction displacement container, can quicken the generation of hydrate, shorten experimental period greatly.
By experiment and the mensuration of this apparatus system, can simulate the Permeability Parameters of gas hydrate effectively, for the exploitation of gas hydrate provides foundation to the gas hydrate permeability.
Description of drawings
Below in conjunction with the drawings and specific embodiments this device is done detailed description:
Fig. 1 is a structural representation of the present invention.
Embodiment
This device comprises reaction displacement container 1, saturation water container 2, and an end of reaction displacement container 1 is communicated with saturation water container 2 by counterbalance valve 3, and the other end of reaction displacement container 1 is communicated with saturation water container 2 by heat interchanger 4, constant-flux pump 5; Saturation water container 2 connects high-pressure air feed device 6.
Reaction displacement container 1 is provided with Time Domain Reflectometry probe 7 and pressure transducer 8, in the reaction displacement container 1 laboratory sample 9 is set, and the two ends, the left and right sides of laboratory sample 9 are provided with and compress filtration unit 10.The outside of reaction displacement container 1 is provided with cooling water jecket 11.Saturation water container 2 bottoms are provided with magnetic stirring apparatus 12.
The maximum working pressure (MOP) of reaction displacement container 1 is 30MPa, operating temperature range is-and 30-30 ℃.React the heat conductive rubber cover of packing into earlier in the displacement container 1, reinstall the laboratory sample 9 of experiment usefulness.Time Domain Reflectometry probe 7 adopts the stainless-steel tube of hollow to make, and is convenient in inside the Pt100 thermal resistance is installed, and Time Domain Reflectometry probe 7 is connected to external container by the joint of two high pressure sealings and insulation, and is connected with acquisition instrument by cable.
Adopts pressure sensor is measured the pressure at reaction displacement container 1 two ends.Outside the reaction displacement container 1 cooling water jecket 11 is housed, is connected with high low temperature circulator, with control reaction displacement container 1 temperature inside by flexible pipe.A magnetic stirring apparatus 12 is arranged below the saturation water container, and its rotating speed can be regulated, and stirs aqueous solution under magneticaction, increases the contact area of solution-air, quickens preparation saturated air aqueous solution.After the saturated solution for preparing is extracted out by constant-flux pump 5, by heat interchanger, the temperature that makes solution is consistent with temperature in the reaction displacement container 1, injects then in the reaction displacement container 1, discharge and flow in the saturation water container 2 through the other end of container again, finish the circulation of solution.Signals such as temperature, pressure, flow velocity and saturation degree all enter by the digital collection card and store in the computing machine and handle in the experimentation.Apparatus of the present invention have realized surveying in gas hydrate saturation degree and the permeability in same system, make the experimental study of gas hydrate saturation degree and permeability relation become possibility.
Apparatus of the present invention in use, the concrete operations step is as follows:
1. the heat conductive rubber cover of in reaction displacement container 1, packing into;
2. in the heat conductive rubber cover, install laboratory sample 9 and compacting;
3. install various sniffers;
4. after system vacuumizes, in saturation water container 2, the saturation water under the preparation specified pressure;
5. start constant-flux pump 5, saturation water is circulated in system;
6. reduce the temperature of chilled water, in laboratory sample 9, generate gas hydrate;
7. detect, write down various experiment parameters.
Claims (5)
1. gas hydrate permeability analogue experiment installation, it is characterized in that, comprise reaction displacement container, saturation water container, an end of reaction displacement container is communicated with the saturation water container by counterbalance valve, and the other end of reaction displacement container is communicated with the saturation water container by heat interchanger, constant-flux pump; The saturation water container connects the high-pressure air feed device.
2. gas hydrate permeability analogue experiment installation according to claim 1, it is characterized in that, reaction displacement container is provided with Time Domain Reflectometry probe and pressure transducer, in the reaction displacement container laboratory sample is set, and the two ends, the left and right sides of laboratory sample are provided with and compress filtration unit.
3. gas hydrate permeability analogue experiment installation according to claim 2 is characterized in that, the outside of reaction displacement container is provided with cooling water jecket.
4. gas hydrate permeability analogue experiment installation according to claim 2 is characterized in that the saturation water container bottom is provided with magnetic stirring apparatus.
5. gas hydrate permeability analogue experiment installation according to claim 2 is characterized in that, the Time Domain Reflectometry probe adopts the stainless-steel tube of hollow to make, and the Pt100 thermal resistance is installed in inside.
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| CN 201010222091 CN102042947A (en) | 2010-07-01 | 2010-07-01 | Natural gas hydrate permeability simulation experimental device |
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| CN 201010222091 CN102042947A (en) | 2010-07-01 | 2010-07-01 | Natural gas hydrate permeability simulation experimental device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062218A (en) * | 2014-06-24 | 2014-09-24 | 同济大学 | Rapid saturation device for geotechnical model test |
| CN105572014A (en) * | 2016-02-03 | 2016-05-11 | 青岛海洋地质研究所 | Natural gas hydrate saturation and sediment permeability synchronous measurement device and method |
| CN105735948A (en) * | 2016-03-23 | 2016-07-06 | 青岛海洋地质研究所 | Indoor experiment simulation method of gas hydrate drilling and producing technology |
| US20170292904A1 (en) * | 2015-09-23 | 2017-10-12 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| CN107576604A (en) * | 2017-08-08 | 2018-01-12 | 广州海洋地质调查局 | A kind of gas hydrates rock core flow velocity sensitivity measurement system |
| CN108051354A (en) * | 2017-12-11 | 2018-05-18 | 大连理工大学 | A kind of hypotonic hydrate sediment permeability survey method and apparatus based on impulse attenuation analysis |
| CN108931406A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of generation method of gas hydrates sample |
| CN110296928A (en) * | 2019-07-19 | 2019-10-01 | 三峡大学 | The device and method of visualization fracture seepage is simulated using magnetic fluid |
| CN111380789A (en) * | 2018-12-29 | 2020-07-07 | 中国石油大学(北京) | Device and method for measuring permeability of combustible ice |
| CN111583770A (en) * | 2020-06-04 | 2020-08-25 | 青岛海洋地质研究所 | Marine seepage type natural gas hydrate accumulation simulation experiment device and method based on geotechnical centrifuge |
| CN111596037A (en) * | 2020-07-01 | 2020-08-28 | 西南石油大学 | Dynamic crack width simulation experiment device for cracks |
| CN112179826A (en) * | 2020-09-14 | 2021-01-05 | 中国石油大学(华东) | Device for measuring dynamic capillary force of high-temperature and high-pressure rock core based on time domain reflection technology and experimental method |
| CN115219478A (en) * | 2022-08-24 | 2022-10-21 | 青岛海洋地质研究所 | Experimental device and method for in-situ observation of hydrate phase change by Raman spectrum |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062218B (en) * | 2014-06-24 | 2017-04-05 | 同济大学 | A kind of geotechnical model test is rapidly saturated device |
| CN104062218A (en) * | 2014-06-24 | 2014-09-24 | 同济大学 | Rapid saturation device for geotechnical model test |
| US20170292904A1 (en) * | 2015-09-23 | 2017-10-12 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| US9897529B2 (en) * | 2015-09-23 | 2018-02-20 | China University Of Petroleum (East China) | Test system and test method for a simulation experiment of gas hydrate in a porous medium |
| CN105572014B (en) * | 2016-02-03 | 2018-11-13 | 青岛海洋地质研究所 | Gas hydrates saturation degree and deposit permeability synchronous measuring apparatus and method |
| CN105572014A (en) * | 2016-02-03 | 2016-05-11 | 青岛海洋地质研究所 | Natural gas hydrate saturation and sediment permeability synchronous measurement device and method |
| CN105735948A (en) * | 2016-03-23 | 2016-07-06 | 青岛海洋地质研究所 | Indoor experiment simulation method of gas hydrate drilling and producing technology |
| CN105735948B (en) * | 2016-03-23 | 2018-07-13 | 青岛海洋地质研究所 | A kind of experimental simulation method in gas hydrates drilling process chamber |
| CN108931406A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of generation method of gas hydrates sample |
| CN107576604A (en) * | 2017-08-08 | 2018-01-12 | 广州海洋地质调查局 | A kind of gas hydrates rock core flow velocity sensitivity measurement system |
| CN108051354A (en) * | 2017-12-11 | 2018-05-18 | 大连理工大学 | A kind of hypotonic hydrate sediment permeability survey method and apparatus based on impulse attenuation analysis |
| CN111380789A (en) * | 2018-12-29 | 2020-07-07 | 中国石油大学(北京) | Device and method for measuring permeability of combustible ice |
| CN110296928A (en) * | 2019-07-19 | 2019-10-01 | 三峡大学 | The device and method of visualization fracture seepage is simulated using magnetic fluid |
| CN110296928B (en) * | 2019-07-19 | 2022-04-08 | 三峡大学 | Device and method for simulating visual fracture seepage by using magnetofluid |
| CN111583770A (en) * | 2020-06-04 | 2020-08-25 | 青岛海洋地质研究所 | Marine seepage type natural gas hydrate accumulation simulation experiment device and method based on geotechnical centrifuge |
| CN111583770B (en) * | 2020-06-04 | 2021-02-09 | 青岛海洋地质研究所 | Marine seepage type natural gas hydrate accumulation simulation experiment device and method based on geotechnical centrifuge |
| CN111596037A (en) * | 2020-07-01 | 2020-08-28 | 西南石油大学 | Dynamic crack width simulation experiment device for cracks |
| CN112179826A (en) * | 2020-09-14 | 2021-01-05 | 中国石油大学(华东) | Device for measuring dynamic capillary force of high-temperature and high-pressure rock core based on time domain reflection technology and experimental method |
| CN115219478A (en) * | 2022-08-24 | 2022-10-21 | 青岛海洋地质研究所 | Experimental device and method for in-situ observation of hydrate phase change by Raman spectrum |
| CN115219478B (en) * | 2022-08-24 | 2024-05-24 | 青岛海洋地质研究所 | Experimental device and method for in-situ observation of hydrate phase change through Raman spectrum |
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Application publication date: 20110504 |