CN101246155B - Experimental device for influence of gas hydrate decomposition to stable stability of structure article - Google Patents
Experimental device for influence of gas hydrate decomposition to stable stability of structure article Download PDFInfo
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- CN101246155B CN101246155B CN2008101028511A CN200810102851A CN101246155B CN 101246155 B CN101246155 B CN 101246155B CN 2008101028511 A CN2008101028511 A CN 2008101028511A CN 200810102851 A CN200810102851 A CN 200810102851A CN 101246155 B CN101246155 B CN 101246155B
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- gas hydrate
- decomposition
- model casing
- stratum
- stable stability
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Abstract
The invention discloses a structure stability experimental equipment which is affected by analysis of gas hydrate decomposition, including model casing, structure, decomposition condition supply part and measure system, wherein the model casing is used for preparation and analysis of stratum containing gas hydrate, the structure is connected directly with stratum of through anchoring system; the decomposition condition supply part provides the decomposition condition when the gas hydrate is decomposed; the measure system is used for measuring mechanics and thermodynamics parameters during gas hydrate forming and analysis processes. The invention can imitate gas hydrate synthesis and decomposition processes in lab, and can measure the affect of structure stability when the gas hydrate decomposes, by measuring relative data, and can provide reliable basis for exploring gas hydrate, preventing environmental destroy and so on.
Description
Technical field
The present invention relates to the gas hydrate study field, especially a kind of gas hydrate decompose influences experimental provision to stable stability of structure article.
Background technology
Gas hydrate are rock gas mineral reserve of kind ice shape, and it is a kind of cage compound or title envelope shape potpourri, and its formation is not through intermolecular strong attraction force acts, but the cage structure that hydrone forms has closely been wrapped up another kind of molecule.The principal ingredient of gas hydrate is methane hydrates.One piece of nearest research report of US Geological Survey shows the summation of the carbon content of carbon content in all fossil fuels at present of the methane hydrate of the natural formation of occurring in nature.Discover the methane gas that contains 164 volumes under the standard state in the methane hydrate of 1 volume, it can provide and store a large amount of energy to the mankind.But methane is a kind of greenhouse gases higher than carbon dioxide thermal capacitance simultaneously, and its usefulness is more than 20 times of the latter.
In the seabed; Gas hydrate are extremely fragile, in case certain factor (as sea level declines, subbottom structure activity, oceanic heat flow value increase, drilling well or gas production are improper etc.) cause that seabed pressure reduces or the temperature rising, gas hydrate might resolve into natural G&W; Thereby influence the stability of marine bottom sediment; Even the serious unstability and the destruction that cause submarine slide and marine structure, a large amount of releases of rock gas can cause environmental hazards such as biological destruction and climate warming.
Summary of the invention
To the existing problem that exists, the object of the present invention is to provide a kind of gas hydrate to decompose influences experimental provision to stable stability of structure article.
For realizing above-mentioned purpose; A kind of gas hydrate decomposition of the present invention influences experimental provision to stable stability of structure article and comprises that model casing, works, decomposition condition provide portion and measuring system; Wherein model casing is used to contain the preparation and the decomposition on gas hydrate stratum, and works directly is fixedly connected with this stratum or is fixedly connected with it through mooring system; Required decomposition condition when the decomposition condition portion of providing decompose at gas hydrate; Measuring system is used for measuring that gas hydrate form and decomposable process mechanics, thermodynamic parameter.
Further, the said decomposition condition portion of providing vertically is arranged in the gas hydrate, or is horizontally set on the bottom of gas hydrate.
Further, be the high pressure low temperature environment in the said model casing.
The present invention can simulate the synthetic and decomposable process of gas hydrate and also can measure when gas hydrate decompose in the laboratory; Influence to stable stability of structure article; Through measuring related data, can be the exploitation of gas hydrate, the prevention of environmental disruption etc., reliable foundation is provided.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Shown in accompanying drawing, a kind of gas hydrate decomposition of the present invention influences experimental provision to stable stability of structure article and comprises that model casing 1, works 4, decomposition condition provide portion 3 and measuring system 6, wherein,
Model casing 1: the synthetic gas hydrate stratum 2 that contains in model casing 1; This stratum 2 can all be the gas hydrate sediments; Also can be to contain the gas hydrate stratum and do not contain the compound stratum that the gas hydrate stratum constitutes; In the model casing 1 is the high pressure low temperature environment, and the formation condition on gas hydrate stratum 2 is provided, and is the part of whole synthesis system.Simultaneously, for simulating actual sea bed, model casing 1 can be horizontally disposed, also can be provided with irregular shapes such as certain slope.
Decomposition condition provides part 3: can be the pipeline that vertically is provided with, also can be horizontally disposed pipeline, through heat injection in pipeline or step-down, destroys the stable condition of gas hydrate 2, impels gas hydrate 2 to decompose.
Works 4: simulation sea bed, or the practical structures thing in the simulation oceanographic engineering, like platform, platform base, pipeline etc.
Measuring system 6: the distortion of temperature, pressure and works 4 in 2 formation of measurement gas hydrate stratum and the decomposable process, bearing capacity etc.
Claims (3)
1. gas hydrate decompose influences experimental provision to stable stability of structure article; It is characterized in that; This device comprises that model casing, works, decomposition condition provide portion and measuring system; Wherein model casing is used to contain the preparation and the decomposition on gas hydrate stratum, and works directly is fixedly connected with this stratum or is fixedly connected with it through mooring system; Required decomposition condition when the decomposition condition portion of providing decompose at gas hydrate; Measuring system is used for measuring gas hydrate and forms and influence and the measurement related data of decomposable process to stable stability of structure article.
2. a kind of gas hydrate as claimed in claim 1 decompose influences experimental provision to stable stability of structure article, it is characterized in that, the said decomposition condition portion of providing vertically is arranged in the gas hydrate, or is horizontally set on the bottom of gas hydrate.
3. a kind of gas hydrate as claimed in claim 1 decompose influences experimental provision to stable stability of structure article, it is characterized in that, and be the high pressure low temperature environment in the said model casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101028511A CN101246155B (en) | 2008-03-27 | 2008-03-27 | Experimental device for influence of gas hydrate decomposition to stable stability of structure article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101028511A CN101246155B (en) | 2008-03-27 | 2008-03-27 | Experimental device for influence of gas hydrate decomposition to stable stability of structure article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101246155A CN101246155A (en) | 2008-08-20 |
| CN101246155B true CN101246155B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101028511A Expired - Fee Related CN101246155B (en) | 2008-03-27 | 2008-03-27 | Experimental device for influence of gas hydrate decomposition to stable stability of structure article |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477086B (en) * | 2008-12-29 | 2011-09-21 | 中国科学院广州能源研究所 | Gas hydrate generating, sampling and analyzing method and apparatus |
| CN101697018B (en) * | 2009-10-23 | 2012-09-05 | 中国科学院力学研究所 | Method for simulating hydrate decomposition to cause layered fracture of stratum |
| CN101696949B (en) * | 2009-10-27 | 2011-12-21 | 中国科学院力学研究所 | Measuring device for phase change heat transfer in columnar hydrate sediment |
| CN101701955B (en) * | 2009-10-27 | 2013-04-03 | 中国科学院力学研究所 | Experimental device and experimental method for simulating obvious stratum damage resulted from hydrate decomposition |
| NZ600325A (en) * | 2009-12-17 | 2014-07-25 | Shell Int Research | Determining methane content of a bottom sample |
| CN103869046B (en) * | 2014-04-08 | 2016-01-13 | 中国海洋大学 | The submarine slide simulation that gas hydrate dissociation causes and recording geometry |
| CN105223315B (en) * | 2015-10-12 | 2017-06-23 | 大连理工大学 | The calculating Forecasting Methodology that a kind of gas hydrates reservoir structure thing interacts |
| CN107526892B (en) * | 2017-08-30 | 2018-07-31 | 广州海洋地质调查局 | A kind of stability assessment method of ocean gas hydrate pilot production reservoir |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440832A (en) * | 2003-04-01 | 2003-09-10 | 中国地质大学（武汉） | Comprehensive test equipment for natural gas hydrate |
| CN2633414Y (en) * | 2003-04-01 | 2004-08-18 | 中国地质大学（武汉） | Reactor for natural gas hydrate complex test |
| CN1762565A (en) * | 2005-09-20 | 2006-04-26 | 南京工业大学 | Complete equipment system for simulating synthesis and decomposition of natural gas hydrate and reaction kettle |
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2008
- 2008-03-27 CN CN2008101028511A patent/CN101246155B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440832A (en) * | 2003-04-01 | 2003-09-10 | 中国地质大学（武汉） | Comprehensive test equipment for natural gas hydrate |
| CN2633414Y (en) * | 2003-04-01 | 2004-08-18 | 中国地质大学（武汉） | Reactor for natural gas hydrate complex test |
| CN1762565A (en) * | 2005-09-20 | 2006-04-26 | 南京工业大学 | Complete equipment system for simulating synthesis and decomposition of natural gas hydrate and reaction kettle |
Non-Patent Citations (2)
| Title |
|---|
| 李明川.多孔介质中天然气水合物注热水分解理论及试验研究.《中国博士学位论文数据库》.2005,全文. * |
| 王淑云.天然气水合物分解对分层土中海底管道稳定性的影响.《***》.2007,第24卷207-211. * |
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| CN101246155A (en) | 2008-08-20 |
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