CN1587641A - Method and device for sea natural gas hydrate production - Google Patents
Method and device for sea natural gas hydrate production Download PDFInfo
- Publication number
- CN1587641A CN1587641A CNA2004100515428A CN200410051542A CN1587641A CN 1587641 A CN1587641 A CN 1587641A CN A2004100515428 A CNA2004100515428 A CN A2004100515428A CN 200410051542 A CN200410051542 A CN 200410051542A CN 1587641 A CN1587641 A CN 1587641A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- hydrate
- equipment
- seawater
- silt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000007789 gas Substances 0.000 claims abstract description 35
- 239000003345 natural gas Substances 0.000 claims abstract description 35
- 239000013535 sea water Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 34
- 238000010304 firing Methods 0.000 claims description 13
- -1 natural gas hydrates Chemical class 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000009795 derivation Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 150000004677 hydrates Chemical class 0.000 description 20
- 238000000926 separation method Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of marine natural gas hydrate drilling device and equipment. The method includes the following steps: exploit the natural gas hydrate layer in the sea floor; separate the silt in the sea floor, then transmits the mixture of natural hydrate, resolved gas and water nito the resolving device on the sea-level; heat the sea water with higher temperature in the sea level; channel the hot water or steam after heating into the resolving device for resolving; channel out the resolved natural gas and sea water separately. The device incldues drilling facility, silt separating equipment, sea water ehating facility, hydrate resolving device and natural gas leading out pipeling. The method and device of the invention well overcome the drawbacks of the existing method for exploiting marine natural gas hdyrate, its equipment is simple, operation is easy, cost is low, working efficiency is high, can apply to extensive exploitation of marine natural gas hydrate.
Description
Technical field
The present invention relates to a kind of exploiting ocean natural gas hydrates method and device.
Background technology
Gas hydrates are high-quality, the clear energy sourcess in a kind of future, and its reserves are suitable with existing earth fossil fuel (oil, natural gas and coal) total carbon, and it will become the most important energy of human 21 century.Successfully carry out the exploitation of gas hydrates, have crucial meaning to alleviating the energy crisis that human society faced, the production technique of gas hydrates has become a world research hot subject at present.
The natural-gas hydrate is mainly contained in the ocean, is the white solid state crystalline material that the little molecule of natural gas forms with the water mutual effect under certain condition.Because the self-characteristic of gas hydrates, its exploitation with the conventional traditional energy is different.Coal is solid under mine, is still solid after the exploitation; Oil underground be fluid, be still fluid after the exploitation; And hydrate to bury on the ocean bottom be solid, molecular configuration changes in recovery process, becomes gas from solid.That is to say that hydrate undergoes phase transition in recovery process.The gas hydrates development technique that comprehensive various countries scientist proposes can be divided into two classes substantially: exploitation is decomposed in underground decomposition exploitation and ground.
Underground decomposition exploitation is the activities with reference to oil exploitation, at first in the stratum, form pit shaft, consider how to break artificially the temperature, pressure condition of gas hydrates stable existence then, the hydrate that will contain in deposit decomposes, and natural gas is adopted to ground at last again.Mainly comprise: (1) heating is that steam, hot water, hot salt brine or other hot fluid are pumped into the gas hydrates reservoir from ground, impels temperature to rise and reaches the decomposition of hydrate; (2) voltage drop method is by reducing moving of phase equilibrium line that pressure causes that gas hydrates are stable, thereby reaches the purpose of impelling gas hydrates to decompose; (3) chemical agent method, chemical agents such as salt solution, methyl alcohol, ethanol are pumped into the stratum from wellhole after, can change the phase balance condition that hydrate forms, reduce the hydrate equilibrium temperature, cause the decomposition of gas hydrates.For underground decomposition exploitation, be easy to form reasons such as hydrate obstruction in, the pipeline very long owing to the pipeline of the instability of continental slope, laying, can produce certain technology and economic problems.Simultaneously, more than various production techniques itself limitation is all arranged, big as the heating heat waste, efficient is low, the voltage drop method exploitation rate is slow, chemical agent method expense costliness etc.More than these factors, all might make people be difficult to utilize this means to come the exploitation of gas hydrate resource.
Decompose exploitation on the ground and be meant under the situation that gas hydrates are decomposed, gas hydrates are transported to decompose exploitation on the land.A new gas hydrates development approach is to make gas hydrate particleization at the deep-sea; or gas hydrates are packed in a kind of expandable soft airbag (its inner keep gas hydrates stablize needed temperature and pressure condition); with submarine gas hydrates are dragged near the continental shelf shallow water area again; there; gas hydrates can decompose lentamente, produce fuel and water.Perhaps can develop a kind of additive from now on, gas hydrates can be stablized under lower pressure and higher temperature.If can accomplish these, gas hydrates transport on traditional boats and ships that get up may be than the natural gas safety also of liquefaction.Though decompose some shortcomings that exploitation has overcome underground decomposition exploitation on the ground, only be a kind of imagination also at present, also have many difficult problems to overcome, the actual mining site of distance is used also has suitable distance.
In sum, up to the present, also there be not a kind of the concrete of exploitation of gas hydrate and effective method of can being used for.The method that present stage is paid close attention to has: the gas that inject hot water, reduce reservoir pressure, injecting inhibitor, injection can not form hydrate, adopt microwave technology etc.The actual still controversial Russian Siberian Mai Suoya field of breathing out of having only of putting into production utilizes the method for step-down and injecting inhibitor to produce 20 years.Be used for from making of above each method, it is uneconomic only adopting a certain method to come exploitation of gas hydrate, has only advantage in conjunction with distinct methods just can reach cost-effective exploitation to gas hydrates.
In view of above reason, the present invention minute is considering underground decomposition exploitation and is decomposing on the ground on the advantage and not enough basis of exploitation, a kind of economy, the method and the device of large scale mining ocean gas hydrate have efficiently been proposed, for the exploitation of hydrate opens up a new way.
Summary of the invention
The purpose of this invention is to provide a kind of economy, the method and the device of large scale mining ocean gas hydrate efficiently.
The objective of the invention is to realize by following technical scheme:
The inventive system comprises drilling equipment, silt separation apparatus, seawater firing equipment, hydrate decomposition device, natural gas derivation pipeline and various conveyance conduit.Described drilling equipment is included in the rig of the mixture of exploitation generation hydrate, silt and decomposition gas in the stratum.Described silt separation apparatus is positioned at the seabed, is used for the silt of mixture is separated.Described hydrate decomposition device is positioned at the sea, is used to import higher seawater of the temperature that heated through the seawater firing equipment or steam with the decomposition water compound.
Method of the present invention and device operating principle are to use rig that the sea bottom hydrate layer is exploited, by inject seawater with the mixture of hydrate, silt and decomposition gas be discharged to be positioned at the seabed silt separation apparatus with separation of sediment.The mixture of the hydrate after the separation, decomposition gas and water is transported to the hydrate decomposition device that is positioned on the sea by pipeline, and isolated silt is then stayed the seabed.Like this, carry the power that needs to reduce greatly.
The working method of hydrate decomposition device is: extract the higher seawater of temperature of ocean surface, the seawater of extraction is introduced into the seawater firing equipment and is heated, and enters decomposer afterwards.Seawater firing equipment output can be hot water, also can be steam.In seawater firing equipment initial start stage, the fuel of use can be oil, natural gas etc.After exploiting out natural gas, directly the leader natural gas is to the seawater firing equipment, thereby realizes the fuel self-sufficiency, significantly reduces from land fuel transport amount.
The hot water of seawater firing equipment output or steam feed from the bottom of hydrate decomposition device, and the mixture of hydrate that comes from the seabed and seawater is from the middle part or the top importing of hydrate decomposition device, like this, hydrate is suspended state decline after entering this decomposer, in the process that descends, dissolved decomposition by higher seawater or the steam of temperature that comes from the bottom, decompose the gas that produces and rise to the decomposer top, enter gas pipeline.The top of decomposer is provided with outlet pipe, is used for draining.
The water inlet pipe of decomposer and outlet pipe can be roots at the most.In gas outlet, natural gas delivery line road water capturing installation or other drying devices can be set, be used for removing the moisture of natural gas.
Method and apparatus of the present invention, overcome the drawback of existing exploiting ocean natural gas hydrate the whole bag of tricks preferably, equipment is simple, easy to operate, with low cost, high efficiency, can be applied to exploiting ocean natural gas hydrate on a large scale, find a new way for the mankind utilize the ocean natural gas resource on a large scale.
Description of drawings
Fig. 1 is the fundamental diagram of one embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing content of the present invention is further specified:
Device of the present invention comprises with the lower part:
1, drill bit 2, rig 3, mixture channel 4, silt separation apparatus 5, decomposition jar 6, firing equipment 7, seawater input channel 8, hot water or steam output pipe road 9, natural gas input channel 10, natural gas output channel 11, seawater output channel 12, pump 13, pump 14, pump 15, pipeline
As shown in Figure 1, stretching into drill bit 1 at the sea bed gas hydrate layer exploits, with hydrate, the mixture of silt and decomposition gas is discharged to the silt separation apparatus 4 that is positioned at the seabed, hydrate after the separation, the mixture of decomposition gas and water is transported to the decomposition jar 5 that is positioned on the sea by pipeline 15, the seawater input firing equipment 6 that pump 14 is higher with the temperature on sea, heated hot water or steam decompose jar 5 through pipeline 8 inputs, the natural gas via pipeline 10 that decomposites is derived, other has part natural gas via pipeline 9 to import the energy of firing equipment 6 as heating usefulness, and used seawater exports the sea to again through pipeline 11.
Claims (10)
1, a kind of exploiting ocean natural gas hydrates method is characterized in that may further comprise the steps:
(1) seabed natural gas hydrate layer is exploited, produce hydrate, silt and decomposition gas mixture and on be discharged to the seabed;
(2) silt separates in the seabed, and will be sent to the decomposer that is positioned at the sea level with the mixture of natural gas hydrate, decomposition gas and water after silt separates;
(3) the higher seawater of temperature on heating sea level;
(4) heated hot water or steam importing decomposer are used for decomposing;
(5) natural gas and the seawater after the decomposition derived respectively.
2, exploiting ocean natural gas hydrates method as claimed in claim 1 is characterized in that the mixture that contain hydrate next from the seabed enters decomposer from the top of hot water or steam.
3, exploiting ocean natural gas hydrates method as claimed in claim 1 or 2 is characterized in that decomposing the part natural gas of deriving the back and imports the heating energy source of heater as step (3).
4, a kind of exploiting ocean natural gas hydrates equipment comprises natural gas derivation pipeline, it is characterized in that also comprising drilling equipment, silt eliminator, hydrate decomposition device, seawater firing equipment; Described drilling equipment is included in the drill bit and the rig of the mixture of exploitation generation hydrate, silt and decomposition gas in the stratum; Described silt eliminator is positioned at the seabed, is used for the silt of mixture is separated; Described hydrate decomposition device is positioned at the sea, is used to import higher seawater of the temperature that heated through the seawater firing equipment or steam with the decomposition water compound.
5, exploiting ocean natural gas hydrates equipment according to claim 4 is characterized in that: hot water that imports from the seawater heater or steam enter from the bottom of hydrate decomposition device, discharge from top.
6, according to claim 4 or 5 described exploiting ocean natural gas hydrates equipment, it is characterized in that: the mixture that contains hydrate that comes from the seabed in hydrate decomposition device enters hydrate decomposition device from the hot water of seawater firing equipment importing or the top of steam.
7, exploiting ocean natural gas hydrates equipment according to claim 4 is characterized in that: hydrate decomposition device top is provided with natural gas and derives pipeline.
8, according to claim 4 or 7 described exploiting ocean natural gas hydrates equipment, it is characterized in that: the part natural gas via pipeline of deriving from hydrate decomposition device imports the seawater heater as heating energy source.
9, according to claim 4 or 5 described exploiting ocean natural gas hydrates equipment, it is characterized in that: described seawater heater is a boiler.
10, exploiting ocean natural gas hydrates equipment according to claim 7 is characterized in that: gas outlet, natural gas delivery line road is provided with water capturing installation or other drying devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100515428A CN1587641A (en) | 2004-09-21 | 2004-09-21 | Method and device for sea natural gas hydrate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100515428A CN1587641A (en) | 2004-09-21 | 2004-09-21 | Method and device for sea natural gas hydrate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1587641A true CN1587641A (en) | 2005-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100515428A Pending CN1587641A (en) | 2004-09-21 | 2004-09-21 | Method and device for sea natural gas hydrate production |
Country Status (1)
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| CN (1) | CN1587641A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434654C (en) * | 2007-02-09 | 2008-11-19 | 中国科学院广州能源研究所 | Cogeneration method for desalinating sea water and exploiting ocean natural gas hydrates |
| CN100455769C (en) * | 2005-12-22 | 2009-01-28 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| CN100587227C (en) * | 2007-02-13 | 2010-02-03 | 中国科学院广州能源研究所 | Method for exploiting natural gas hydrates and device thereof |
| CN102797447A (en) * | 2012-09-05 | 2012-11-28 | 韩中枢 | Extracting method of land combustible ice and extracting device adopted for same |
| CN102817596A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Ocean combustible ice mining device and method |
| CN103015959A (en) * | 2012-11-29 | 2013-04-03 | 中国科学院力学研究所 | Mechanical-thermal hydrate exploiting method |
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN104763382A (en) * | 2015-03-26 | 2015-07-08 | 成都来宝石油设备有限公司 | Methane hydrate gathering pipe |
| CN104806208A (en) * | 2015-03-26 | 2015-07-29 | 成都来宝石油设备有限公司 | Methane hydrate collecting device for shallow stratum |
| CN104927950A (en) * | 2015-04-15 | 2015-09-23 | 辽宁石油化工大学 | Method and device for processing natural gas hydrate slurry in submarine pipeline |
| CN104948144A (en) * | 2015-06-15 | 2015-09-30 | 西南石油大学 | Method and device for utilizing ultrasonic waves to exploit seabed surface layer natural gas hydrate |
| CN105003237A (en) * | 2015-06-11 | 2015-10-28 | 中国石油大学(华东) | Apparatus and method for integrated processing of natural gas hydrate exploitation by geothermy and waste CO2 reinjection |
| CN106761589A (en) * | 2017-01-03 | 2017-05-31 | 中国石油大学(北京) | A kind of method of Gas Hydrate In Sea Areas reservoir reconstruction exploitation |
| CN106837339A (en) * | 2017-04-09 | 2017-06-13 | 杭州云蜂工业设计有限公司 | A kind of broken equipment of submarine surface combustible ice |
| CN106968674A (en) * | 2017-04-09 | 2017-07-21 | 杭州云蜂工业设计有限公司 | A kind of disintegrating apparatus of submarine surface gas hydrates |
-
2004
- 2004-09-21 CN CNA2004100515428A patent/CN1587641A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455769C (en) * | 2005-12-22 | 2009-01-28 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| CN100434654C (en) * | 2007-02-09 | 2008-11-19 | 中国科学院广州能源研究所 | Cogeneration method for desalinating sea water and exploiting ocean natural gas hydrates |
| CN100587227C (en) * | 2007-02-13 | 2010-02-03 | 中国科学院广州能源研究所 | Method for exploiting natural gas hydrates and device thereof |
| CN102797447A (en) * | 2012-09-05 | 2012-11-28 | 韩中枢 | Extracting method of land combustible ice and extracting device adopted for same |
| CN102817596A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Ocean combustible ice mining device and method |
| CN103015959A (en) * | 2012-11-29 | 2013-04-03 | 中国科学院力学研究所 | Mechanical-thermal hydrate exploiting method |
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103046930B (en) * | 2013-01-15 | 2015-05-13 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN104763382A (en) * | 2015-03-26 | 2015-07-08 | 成都来宝石油设备有限公司 | Methane hydrate gathering pipe |
| CN104806208A (en) * | 2015-03-26 | 2015-07-29 | 成都来宝石油设备有限公司 | Methane hydrate collecting device for shallow stratum |
| CN104927950A (en) * | 2015-04-15 | 2015-09-23 | 辽宁石油化工大学 | Method and device for processing natural gas hydrate slurry in submarine pipeline |
| CN105003237A (en) * | 2015-06-11 | 2015-10-28 | 中国石油大学(华东) | Apparatus and method for integrated processing of natural gas hydrate exploitation by geothermy and waste CO2 reinjection |
| CN104948144A (en) * | 2015-06-15 | 2015-09-30 | 西南石油大学 | Method and device for utilizing ultrasonic waves to exploit seabed surface layer natural gas hydrate |
| CN104948144B (en) * | 2015-06-15 | 2017-08-04 | 西南石油大学 | A kind of utilization ultrasonic wave exploits the method and device of submarine surface gas hydrates |
| CN106761589A (en) * | 2017-01-03 | 2017-05-31 | 中国石油大学(北京) | A kind of method of Gas Hydrate In Sea Areas reservoir reconstruction exploitation |
| CN106761589B (en) * | 2017-01-03 | 2018-12-25 | 中国石油大学(北京) | A kind of method of Gas Hydrate In Sea Areas reservoir reconstruction exploitation |
| CN106837339A (en) * | 2017-04-09 | 2017-06-13 | 杭州云蜂工业设计有限公司 | A kind of broken equipment of submarine surface combustible ice |
| CN106968674A (en) * | 2017-04-09 | 2017-07-21 | 杭州云蜂工业设计有限公司 | A kind of disintegrating apparatus of submarine surface gas hydrates |
| CN106837339B (en) * | 2017-04-09 | 2018-03-16 | 杭州云蜂工业设计有限公司 | A kind of broken equipment of submarine surface combustible ice |
| CN108160298A (en) * | 2017-04-09 | 2018-06-15 | 杭州云蜂工业设计有限公司 | A kind of crushing plant of submarine surface gas hydrates |
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