CN103758492A - Method for exploiting natural gas hydrate - Google Patents
Method for exploiting natural gas hydrate Download PDFInfo
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- CN103758492A CN103758492A CN201310535879.5A CN201310535879A CN103758492A CN 103758492 A CN103758492 A CN 103758492A CN 201310535879 A CN201310535879 A CN 201310535879A CN 103758492 A CN103758492 A CN 103758492A
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- mineshaft
- prefabricated
- parts
- cylindrical
- pit shaft
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Abstract
The invention provides a method for exploring natural gas hydrate. The method comprises the steps of: manufacturing a plurality of cylindrical prefabricated parts before the natural gas hydrate is explored, wherein a plurality of prefabricated holes are reserved at the middle parts of prefabricated blocks at the upper parts of the cylindrical prefabricated parts, the lower parts of the cylindrical prefabricated parts are provided with connecting columns, a layer of seal material is arranged on each connecting column to prevent sea water from flowing into the mineshaft, and the prefabricated holes exactly correspond to the connecting columns; digging the mineshaft on a continental shelf at the bottom of the sea; building a mineshaft base around the mineshaft on the continental shelf at the bottom of the sea, wherein prefabricated holes are also reserved at the upper part of the mineshaft base; suspending the cylindrical prefabricated parts on an exploring platform and putting the cylindrical prefabricated parts into the mineshaft base at the bottom of the mineshaft, so that the connecting columns are exactly put in the prefabricated holes on the mineshaft base; and connecting the residual cylindrical prefabricated parts with one another in the same way till reaching the sea surface, and finally completing the building of the mineshaft.
Description
Affiliated technical field
The present invention relates to a kind of when exploitation of gas hydrate, the construction method of the pit shaft using.
Background technology
At present, the exploitation of gas hydrates is also in the trial stage, combustible ice claims again gas hydrates, so hereinafter referred to as gas hydrates, in recovery process, how gas hydrates from underground mining out, also there is no so far a kind of proper method, affected the large scale mining of gas hydrates.
Summary of the invention
For overcoming in existing situation, the exploitation of gas hydrates is also in the trial stage, in recovery process, how gas hydrates from underground mining out, so far also there is no a kind of proper method, affected the deficiency of the large scale mining of gas hydrates, the invention provides a kind of method of exploiting combustible ice, this method can make gas hydrates be exploited on a large scale.
The technical solution adopted for the present invention to solve the technical problems is: first do better cylindrical shape prefabricated component, in the middle of the prefabricated section on cylindrical shape prefabricated component top, leave pre-manufactured hole, joint pin is arranged at the bottom at cylindrical shape prefabricated component, on joint pin, there is one deck encapsulant, can prevent that seawater from flowing into pit shaft, pre-manufactured hole just in time becomes corresponding relation with joint pin, then start to excavate pit shaft on the continental shelf in seabed, after pit shaft digs, surrounding around pit shaft on the continental shelf in seabed builds up pit shaft pedestal, pre-manufactured hole is also left on the top of pit shaft pedestal, on production platform, cylindrical shape prefabricated component is sling to put on the pit shaft pedestal of wellbore bottom again, joint pin is just in time placed in the pre-manufactured hole above pit shaft pedestal, then the like, remaining cylindrical shape prefabricated component is coupled together, until arrival sea, pit shaft has just built up like this.
The invention has the beneficial effects as follows, the pit shaft using during energy fast construction exploitation of gas hydrate, provides great convenience to the large scale mining of gas hydrates.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the outward appearance elevation of cylindrical shape prefabricated component.
Fig. 3 is the elevation cross-sectional view of cylindrical shape prefabricated component.
Fig. 4 is the B-A direction view of Fig. 3.
Fig. 5 is the A-B direction view of Fig. 3.
1. production platforms in figure, 2. cylindrical shape prefabricated component, 3. encapsulant, 4. continental shelf, 5. gas hydrates, 6. pit shaft pedestal, 7. joint pin, 8. prefabricated section, 9. pre-manufactured hole, 10. pit shaft, 11. seawater.
The specific embodiment
In Fig. 1, there is continental shelf (4) in seabed, continental shelf (4) is gas hydrates (5) below, when exploitation of gas hydrate (5), first at the continental shelf (4) in seabed upper excavation pit shaft (10), after pit shaft (10) digs, first on continental shelf (4), around the position of pit shaft (10), build up pit shaft pedestal (6), pre-manufactured hole is left on the top of pit shaft pedestal (6), then on production platform (1), set cylindrical shape prefabricated component (2) is sling to put on the pit shaft pedestal (6) of wellbore bottom, and the bottom that makes cylindrical shape prefabricated component (2) is just in time placed in pit shaft pedestal (6) pre-manufactured hole above, then the like, remaining cylindrical shape prefabricated component is put into pit shaft (10) the inside successively, until arrival sea, pit shaft has just built up like this.One deck encapsulant (3) is arranged at the bottom of cylindrical shape prefabricated component (2), can prevent that seawater (11) from flowing into pit shaft (10) the inside.
In Fig. 2, in the bottom of cylindrical shape prefabricated component (2), there is joint pin (7), on joint pin (7), there is one deck encapsulant (3), it can prevent that seawater from flowing into pit shaft.
In Fig. 3, the centre of the prefabricated section (8) on cylindrical shape prefabricated component (2) top, leave pre-manufactured hole (9), joint pin (7) is arranged at bottom, on joint pin (7), there is one deck encapsulant (3), when cylindrical shape prefabricated component (2) falls from above, the joint pin (7) of its bottom is just in time put into middle pre-manufactured hole (9) the inside of prefabricated section (8) on that cylindrical shape prefabricated component top below it, encapsulant (3) is crushed between two cylindrical shape prefabricated components, makes seawater can not flow into pit shaft the inside.
In Fig. 4, the centre of the prefabricated section (8) on cylindrical shape prefabricated component (2) top, leaves pre-manufactured hole (9), and when the cylindrical shape prefabricated component when above falls, the joint pin of its bottom is just in time put into pre-manufactured hole (9) the inside.
In Fig. 5, joint pin (7) is arranged at the bottom of cylindrical shape prefabricated component (2), when cylindrical shape prefabricated component (2) falls, the joint pin (7) of its bottom is just in time put into the pre-manufactured hole the inside on that cylindrical shape prefabricated component top below, make two cylindrical shape prefabricated components be linked to be an integral body, form pit shaft.
Claims (1)
1. a method of exploiting combustible ice, is characterized in that: can exploitation of gas hydrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535879.5A CN103758492A (en) | 2013-10-28 | 2013-10-28 | Method for exploiting natural gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535879.5A CN103758492A (en) | 2013-10-28 | 2013-10-28 | Method for exploiting natural gas hydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103758492A true CN103758492A (en) | 2014-04-30 |
Family
ID=50525792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310535879.5A Pending CN103758492A (en) | 2013-10-28 | 2013-10-28 | Method for exploiting natural gas hydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103758492A (en) |
-
2013
- 2013-10-28 CN CN201310535879.5A patent/CN103758492A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |