CN205297508U - Environment -friendly exploitation gas hydrate's device - Google Patents
Environment -friendly exploitation gas hydrate's device Download PDFInfo
- Publication number
- CN205297508U CN205297508U CN201620077337.7U CN201620077337U CN205297508U CN 205297508 U CN205297508 U CN 205297508U CN 201620077337 U CN201620077337 U CN 201620077337U CN 205297508 U CN205297508 U CN 205297508U
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- China
- Prior art keywords
- gas
- carbon dioxide
- gas hydrate
- hydrate
- methane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Abstract
The utility model belongs to the technical field of deep seabed gas hydrate exploitation technology with. Combining step -down method carbon dioxide substitution method, adopting the retractable drill bit to stir the gas hydrate reservoir, reach the purpose that the reservoir stepped down, the carbon dioxide liquid of second well drilling input reacts with the gas hydrate of reservoir, generates carbon dioxide hydrate and methane gas. And carry the sea through first well drilling, just obtain the methane gas through the centrifugation, carbon dioxide gas links to each other with the tee bend pipeline, reaches cyclic utilization's purpose, the device mainly by: retractable drill bit (1), carbon -dioxide generator (2), tee bend pipeline (3), booster (4), carbon dioxide and methane separator (5), container (6), first well drilling (7), second well drilling (8) are constituteed, the utility model discloses mainly be applied to gas hydrate's exploitation.
Description
Technical field
The utility model relates to a kind of device of environment-friendly type exploitation of gas hydrate, adopts dioxyChange carbon and can produce more stable carbon dioxide hydrate in the situation that pressure is lower, thereby putThe methane gas that swaps out, reaches the object of exploitation, particularly a kind of carbon dioxide process exploitation deep layerThe method of sea bed gas hydrate, the production practice that belongs to deep layer sea bed gas hydrate withTechnical field.
Background technology
Gas hydrates are white like ice shape that formed under cryogenic high pressure by natural G&WLook solid matter, it is distributed in seabed, marine sediment and land permafrost band. Because of itGas component is main mainly with methane, claims again methane hydrate. According to tentative prediction, the whole world is naturalOrganic carbon in the contained natural gas of gas hydrate is that the fossil fuels such as oil, natural gas and coal are contained2 times of total organic carbon, are considered to the important alternative energy after coal, petroleum gas.Therefore, the investigation to gas hydrates and research become the focus of international ground educational circles in recent years.
As the gas hydrates of Future New Energy Source, be also a kind of energy of danger simultaneously. HaveClose the exploitation of gas hydrates and resemble a handle " double-edged sword ", need in addition extreme careCareful treats. In considering its resource value, must give one's full attention to relevant exploitationThe serious environmental disaster that utilization may bring to the mankind. Warn again and again as a lot of scientistsSuch: if the exploitation of gas hydrates is improper, will aggravate global warming trend,This effect makes global climate become unstable the most at last, thereby causes environmental hazard, seriously dangerAnd mankind itself's existence. That is to say the design and the reality that develop at gas hydratesExecute the stage, must have enough prevention awarenesses and technical measures, prevent or reduce as far as possible naturalGas hydrate develops the ambient influnence causing.
China starts to walk evening aspect the research of gas hydrates, does not also form and can transport at presentEffectively carry out the science skill of ocean gas hydrate research and assessment by various Detection TechniquesArt troop. Strictly, relevant Detection Techniques are also unfamiliar with, are lacked propaedeutics,Knowledge is compared with university with external advanced person's research center with ability, differs greatly. In " 95 "During this time, Ministry of Land and Resources carried out " China Seas gas hydrate look for ore deposit prospect research meterDraw ", carry out the regional investigation work of preliminary reflection seismic at the South Sea, obtain 4600kmHigh-resolution seismic exploration observational record. Recently, has set up again in the works " 15 " ocean " 863 "" ocean gas hydrate detection method " research topic, has expanded biology barrierScope. Intend the natural gas for China South Sea of combining with sampling by geophysics, geochemistryHydrate forms with occurrence condition and studies, and exploitation simultaneously is effectively carried out gas hydrates and combinedClose new technology and the stock number assessment technology of detection, for carrying out on a large scale from now on the census of manufacturing and realityProviding scientific and technical with change supports and the cultivate professional talent. At present many relevant gas hydratesThe dynamics problem decomposing it be unclear that, and production technique and technique also only rest on theory and experimentIn the stage, people have summed up three kinds of main opening according to the physics character of gas hydrates at presentMining method:
(1) temperature activation method. The method is mainly by steam, hot water, hot salt brine or other hot-fluidBody pumps into natural gas hydrate stratum from ground, the fire flooding using also can adopt exploitation heavy oil timeOr utilize drill string heater, make temperature rise reach gas hydrate dissociation. Hot production techniqueMain weak point is to cause a large amount of heat loss, and efficiency is very low, is particularly forever freezingTu Qu, even if utilize insulated piping, permafrost haorizon also can reduce the efficient heat that passes to reservoir.
(2) chemical-agent technique. Some chemical reagent, such as salt solution, methyl alcohol, ethanol, ethylene glycol,Glycerine etc. can change the phase balance condition that gas hydrates form, and reduce natural gas hydrationThe equilibrium temperature of thing. When by above-mentioned chemical reagent from wellhole pumps into, will cause gas waterThe decomposition of compound. Chemical-agent technique is slow compared with temperature activation method effect, but truly has reduction energy resource consumptionAdvantage, but that the shortcoming of its maximum is expense is too expensive. And because large midocean gas water closesThe residing pressure of thing is higher, also should not adopt the method.
(3) decompression method. Reach the object of gas hydrate dissociation by reducing pressure energy, generalBe by " reduction " gas pressure in the free gas Guinier-Preston zone under gas hydrates layer orForm a natural gas " capsule " (artificially being formed by thermal excitation or chemical reagent effect), with naturalThe gas hydrates of gas contact become unstable well and are decomposed into natural G&W. Decompression methodLarge feature is not need expensive continuous agitation, thereby may become large scale mining sky from now onSo one of effective ways of gas hydrate.
Utility model content
For overcoming above-mentioned prior art deficiency, the utility model provides a kind of environment-friendly type exploitation daySo device of gas hydrate, in conjunction with the gas hydrates carbon dioxide replacement method of voltage drop method, firstAdopt extension type drill bit to stir and obtain a large cavity gas hydrates reservoir,Make part gas hydrate dissociation, then be transported to container by mixed gas delivery pipeline,Thereby reach the object of reservoir step-down, the natural gas hydration of the carbon dioxide liquid passing into and reservoirThing reacts, and generates carbon dioxide hydrate and methane gas under low-pressure state. FormThe methane gas of carbon dioxide and generation is transported to sea by fluid-mixing conveyance conduit,Centrifugation through separator just obtains required methane gas, carbon dioxide and threewayPipeline is connected, and reaches the object recycling, and has improved energy rate, and has protected environment, subtractsLacked the discharge of greenhouse gases, the utility model has been realized carbon dioxide discharge-reduction, has improvedThe security of exploitation, can effectively improve Reservoir Seepage characteristic, improves carbon dioxide replacement exploitation sideThe efficiency of method. The device that utility model relates to is mainly by extension type drill bit (1); Titanium dioxideCarbon generator (2); Three-way pipeline (3); Booster (4); Carbon dioxide and methane separation device(5); Container (6); The first drilling well (7); The second drilling well (8) composition; It is characterized in that,The utility model is mainly used in the exploitation of gas hydrates. This installs not only equipment and is simple and easy toOK, cost is low, and enables to be fully used, and has saved resource, has improved oil recoveryRate.
Realize the technical scheme that the utility model object adopts: a kind of environment-friendly type taps natural gasThe device of hydrate, comprises the following steps:
The device of a kind of environment-friendly type exploitation of gas hydrate of the present invention: adopt in methodDevice have extension type drill bit (1); Carbon-dioxide generator (2); Three-way pipeline (3);Booster (4); Carbon dioxide and methane separation device (5); Container (6); The first drilling well (7);The second drilling well (8), carbon-dioxide generator (2) is by three-way pipeline (3) and booster (4)Be connected with methane separation device (5) with carbon dioxide, carbon dioxide and methane separation device (5) are logicalPiping is connected with container (6), and booster (4) is by pipeline and the second drilling well (8) phaseConnect, the first drilling well (7) is connected with methane separation device (5) with carbon dioxide.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, utilizesChemical reaction or physical separation method manufacture in carbon-dioxide generator goes out required twoCarbonoxide material, then makes it be converted into liquid carbon dioxide by supercharging device, by defeatedSend pipeline to be transported to reservoir.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, passes throughExtension type drill bit stirs gas hydrates reservoir, forms a large sky at reservoirChamber.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that secondThe degree of depth that seabed is goed deep in drilling well is greater than the first drilling well, thereby can reach mist to upper reachesEnter the first drilling well and be transported to marine object.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, according toThe difference of carbon dioxide and methane gas physics or chemical property, settles a mixture to divideFrom device, isolate carbon dioxide and methane gas.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, from dividingFrom the isolated methane gas of device, flow into container, be to obtain our desired material, from dividingFrom the isolated carbon dioxide of device, flow into three-way pipeline, be converted into through supercharger arrangementLiquid carbon dioxide, then pass into seabed, reach the object that material recycle utilizes, reduceThe discharge of carbon dioxide, reduced the pollution level to environment.
The advantage of utility model
Compared with numerous installation methods, the utlity model has obvious feature. Overcome preferablyThe deficiency of existing deep layer offshore mining gas hydrates certain methods, equipment is simple, operationConvenient, with low cost, capacity usage ratio is high, tar productivity is high, social benefit is good, can applyIn extensive deep layer sea bed gas hydrate, for the mankind utilize deep layer sea-bottom natural gas on a large scaleHydrate has found a new way.
Brief description of the drawings
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is a kind of device schematic diagram of environment-friendly type exploitation of gas hydrate;
Detailed description of the invention
Illustrate with reference to the accompanying drawings the concrete a kind of environment-friendly type exploitation day of the utility model belowSo device of gas hydrate.
The device of a kind of environment-friendly type exploitation of gas hydrate described in the utility model, comprising:Extension type drill bit (1); Carbon-dioxide generator (2); Three-way pipeline (3); Booster (4);Carbon dioxide and methane separation device (5); Container (6); The first drilling well (7); The second drilling well (8);It is characterized in that, carbon-dioxide generator (2) is by three-way pipeline (3) and booster (4)Be connected with methane separation device (5) with carbon dioxide, carbon dioxide and methane separation device (5) are logicalPiping is connected with container (6), and booster (4) is by pipeline and the second drilling well (8) phaseConnect, the first drilling well (7) is connected with methane separation device (5) with carbon dioxide.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, utilizesChemical reaction or physical separation method manufacture in carbon-dioxide generator goes out required twoCarbonoxide material, then makes it be converted into liquid carbon dioxide by supercharging device, by defeatedSend pipeline to be transported to reservoir.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, passes throughExtension type drill bit stirs gas hydrates reservoir, forms a large sky at reservoirChamber.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that secondThe degree of depth that seabed is goed deep in drilling well is greater than the first drilling well, thereby can reach mist to upper reachesEnter the first drilling well and be transported to marine object.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, according toThe difference of carbon dioxide and methane gas physics or chemical property, settles a mixture to divideFrom device, isolate carbon dioxide and methane gas.
The device of described a kind of environment-friendly type exploitation of gas hydrate, is characterized in that, from dividingFrom the isolated methane gas of device, flow into container, be to obtain our desired material, from dividingFrom the isolated carbon dioxide of device, flow into three-way pipeline, be converted into through supercharger arrangementLiquid carbon dioxide, then pass into seabed, reach the object that material recycle utilizes, reduceThe discharge of carbon dioxide, reduced the pollution level to environment.
Numeral in accompanying drawing 1 is with lower component
1, extension type drill bit
2, carbon-dioxide generator
3, three-way pipeline
4, booster
5, carbon dioxide and methane separation device
6, container
7, the first drilling well
8, the second drilling well
Claims (1)
1. a device for environment-friendly type exploitation of gas hydrate, comprising: extension type drill bit (1);Carbon-dioxide generator (2); Three-way pipeline (3); Booster (4); Carbon dioxide andMethane separation device (5); Container (6); The first drilling well (7); The second drilling well (8); ItsBe characterised in that, carbon-dioxide generator (2) is by three-way pipeline (3) and booster (4)Be connected with methane separation device (5) with carbon dioxide, carbon dioxide and methane separation device (5) are logicalPiping is connected with container (6), and booster (4) is by pipeline and the second drilling well (8) phaseConnect, the first drilling well (7) is connected with methane separation device (5) with carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077337.7U CN205297508U (en) | 2016-01-26 | 2016-01-26 | Environment -friendly exploitation gas hydrate's device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077337.7U CN205297508U (en) | 2016-01-26 | 2016-01-26 | Environment -friendly exploitation gas hydrate's device |
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| CN205297508U true CN205297508U (en) | 2016-06-08 |
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| CN201620077337.7U Expired - Fee Related CN205297508U (en) | 2016-01-26 | 2016-01-26 | Environment -friendly exploitation gas hydrate's device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086958A (en) * | 2017-12-08 | 2018-05-29 | 中国矿业大学 | Gas hydrates frost well cementation hydrogen-oxygen displacement harmonic extraction method |
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2016
- 2016-01-26 CN CN201620077337.7U patent/CN205297508U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086958A (en) * | 2017-12-08 | 2018-05-29 | 中国矿业大学 | Gas hydrates frost well cementation hydrogen-oxygen displacement harmonic extraction method |
| CN108086958B (en) * | 2017-12-08 | 2020-01-31 | 中国矿业大学 | Hydrogen-oxygen replacement coordinated exploitation method for natural gas hydrate freezing well cementation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20170126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |