CN102373928A - Building method of mineshaft for exploring natural gas hydrate - Google Patents
Building method of mineshaft for exploring natural gas hydrate Download PDFInfo
- Publication number
- CN102373928A CN102373928A CN2010102610884A CN201010261088A CN102373928A CN 102373928 A CN102373928 A CN 102373928A CN 2010102610884 A CN2010102610884 A CN 2010102610884A CN 201010261088 A CN201010261088 A CN 201010261088A CN 102373928 A CN102373928 A CN 102373928A
- Authority
- CN
- China
- Prior art keywords
- mineshaft
- prefabricated
- parts
- pit shaft
- cylindrical
- 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
- 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 9
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000013535 sea water Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- 150000004677 hydrates Chemical class 0.000 description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 11
- 239000008393 encapsulating agent Substances 0.000 description 6
- 238000005065 mining Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
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)
- Artificial Fish Reefs (AREA)
Abstract
The invention provides a building method of a mineshaft 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 employed pit shaft.
Background technology
At present, the exploitation of gas hydrates also is in the trial stage, in recovery process, how to come out gas hydrates from underground mining, does not also have a kind of proper method so far, has influenced the large scale mining of gas hydrates.
Summary of the invention
For overcoming under the existing situation; The exploitation of gas hydrates also is in the trial stage, in recovery process, how to come out gas hydrates from underground mining; So far also there is not a kind of proper method; Influenced the deficiency of the large scale mining of gas hydrates, the invention provides a kind of when exploitation of gas hydrate the construction method of used pit shaft, this method can make gas hydrates exploited on a large scale.
The technical solution adopted for the present invention to solve the technical problems is: do better cylindrical shape prefabricated component earlier, 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 the cylindrical shape prefabricated component, and one deck encapsulant is arranged on the joint pin, can prevent that seawater from flowing into pit shaft; Pre-manufactured hole just in time becomes corresponding relation with joint pin, begins then on the continental shelf in seabed, to excavate pit shaft, after pit shaft digs; On the continental shelf in seabed, around pit shaft, build up the pit shaft pedestal, pre-manufactured hole is also left on the top of pit shaft pedestal, again on the pit shaft pedestal of putting into wellbore bottom of on the production platform slinging the cylindrical shape prefabricated component; Joint pin just in time is placed in the pre-manufactured hole above the pit shaft pedestal, then and the like, couple together remaining cylindrical shape prefabricated component; Till arriving the sea, pit shaft has just built up like this.
The invention has the beneficial effects as follows that the pit shaft that uses in the time of building exploitation of gas hydrate fast provides great convenience for the large scale mining of gas hydrates.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is a sketch map 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 among the 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 the seabed, is gas hydrates (5) below continental shelf (4); When exploitation of gas hydrate (5), go up excavation pit shaft (10) on the continental shelf (4) in seabed earlier, after pit shaft (10) digs; Pit shaft pedestal (6) is built up in position around pit shaft (10) on continental shelf (4) earlier, and pre-manufactured hole is left on the top of pit shaft pedestal (6), then on production platform (1); Sling set cylindrical shape prefabricated component (2) on the pit shaft pedestal (6) of putting into wellbore bottom; And the bottom that makes cylindrical shape prefabricated component (2) just in time is placed in the pre-manufactured hole above the pit shaft pedestal (6), then, puts into remaining cylindrical shape prefabricated component successively inside the pit shaft (10); Till arriving the 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) joint pin (7) is arranged, one deck encapsulant (3) is arranged on the joint pin (7), it can prevent that seawater from flowing into pit shaft.
In Fig. 3, pre-manufactured hole (9) is left in the centre of the prefabricated section (8) on cylindrical shape prefabricated component (2) top; Joint pin (7) is arranged at the bottom; One deck encapsulant (3) is arranged on the joint pin (7), and when cylindrical shape prefabricated component (2) when falling from above, the joint pin (7) of its bottom is just in time put into pre-manufactured hole (9) the inside in the middle of the 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 the pit shaft the inside.
In Fig. 4, pre-manufactured hole (9) is left in the centre of the prefabricated section (8) on cylindrical shape prefabricated component (2) top, and when top cylindrical shape prefabricated component fell, the joint pin of its bottom was 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), and when cylindrical shape prefabricated component (2) when falling, the joint pin (7) of its bottom is just in time put into the pre-manufactured hole the inside on that following cylindrical shape prefabricated component top; Make two cylindrical shape prefabricated components be linked to be an integral body, form pit shaft.
Claims (2)
1. a method is characterized in that: can exploitation of gas hydrate.
2. the described device of claim 1, it is characterized in that: the cylindrical shape prefabricated component can be linked to be pit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102610884A CN102373928A (en) | 2010-08-16 | 2010-08-16 | Building method of mineshaft for exploring natural gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102610884A CN102373928A (en) | 2010-08-16 | 2010-08-16 | Building method of mineshaft for exploring natural gas hydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373928A true CN102373928A (en) | 2012-03-14 |
Family
ID=45793093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102610884A Pending CN102373928A (en) | 2010-08-16 | 2010-08-16 | Building method of mineshaft for exploring natural gas hydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102373928A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022001A (en) * | 2019-12-24 | 2020-04-17 | 青岛度丘新能源技术有限公司 | Submarine mining platform construction system |
-
2010
- 2010-08-16 CN CN2010102610884A patent/CN102373928A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022001A (en) * | 2019-12-24 | 2020-04-17 | 青岛度丘新能源技术有限公司 | Submarine mining platform construction system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101857072B (en) | Unconditional stability equipped deep-draft floating production platform and offshore installation method thereof | |
| JP6679038B1 (en) | Mining method of I-type hydrate system based on vomiting displacement of warm seawater and gravel | |
| CN102168575B (en) | Loose blasting gas extraction technology for horizontal branch well of coal seam floor | |
| US10738572B2 (en) | Apparatus and method for producing oil and gas using buoyancy effect | |
| CN108049846B (en) | Method for exploiting seabed natural gas hydrate through solid replacement pressure maintaining | |
| CN104806217A (en) | Combined separated layer fracturing, grouping and layer-combining mining method for coal bed well group | |
| CN207048739U (en) | A kind of low gaseous mine gas ground extraction technology drilled well bore structure | |
| CN108868706A (en) | Directional drilling supercritical carbon dioxide fracturing replacement exploitation of gas hydrate method | |
| CN107489412B (en) | Submarine shallow natural gas hydrate underground in-situ real-time separation backfill system | |
| CN201961509U (en) | Unconditional stability equipped deep-draft floating oil production platform | |
| CN106218828B (en) | Removable wellhead platform and application method for offshore marginal oilfield exploitation | |
| CN107035343A (en) | A kind of rock salt cavern method of construction and its application based on to the well exploitation old well of formula | |
| CN203373716U (en) | Self-installation suction pile type movable platform structure | |
| CN112709552B (en) | Device and method for developing marine natural gas hydrate system based on hydrate method | |
| CN102373928A (en) | Building method of mineshaft for exploring natural gas hydrate | |
| CN107191218B (en) | Suspended slag water seal blasting permeability increasing and gas extraction method | |
| CN104213556A (en) | End bearing anti-floating anchor assembly and anti-floating construction method | |
| CN103758492A (en) | Method for exploiting natural gas hydrate | |
| CN201310089Y (en) | Offshore wellhead platform supported by water-proof sleeve pipes | |
| CN106436762A (en) | Underwater channel | |
| RU2517285C1 (en) | Underwater structure for drilling oil-gas wells and production of hydrocarbons and methods of its transportation, assembly and operation | |
| CN108547599B (en) | Exploitation system and exploitation method of seabed combustible ice | |
| RU2632085C2 (en) | Method and system of funt well equipment installation | |
| CN211690419U (en) | Drum foundation structure with arc soil-loading plate | |
| CN202609044U (en) | Embedded wide tail structure split anchor with high-pressure orifice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |