CN111022001A - Submarine mining platform construction system - Google Patents
Submarine mining platform construction system Download PDFInfo
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- CN111022001A CN111022001A CN201911341942.5A CN201911341942A CN111022001A CN 111022001 A CN111022001 A CN 111022001A CN 201911341942 A CN201911341942 A CN 201911341942A CN 111022001 A CN111022001 A CN 111022001A
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- China
- Prior art keywords
- construction system
- platform construction
- mining platform
- seafloor mining
- seabed
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000005065 mining Methods 0.000 title claims abstract description 21
- 238000009795 derivation Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000010802 sludge Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 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 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- 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)
- Earth Drilling (AREA)
Abstract
The utility model provides a submarine mining platform construction system, relates to submarine platform construction technical field, including the platform base, installs the pipe that upwards cup joints in proper order on the platform base to form anhydrous derivation chamber way through a plurality of pipes, anhydrous derivation chamber way extends to more than the sea. The invention solves the problems that the traditional technology is limited by the seabed, is inconvenient for operators to submerge and is limited by the sea depth, and is inconvenient for guiding out seabed mineral deposits; and the problems that the construction stability and the safety are influenced because the mining pipeline is easy to shake due to the limitation of ocean currents.
Description
Technical Field
The invention relates to the technical field of seabed platform construction devices, in particular to a seabed mining platform construction system.
Background
The ice is a well-known natural gas hydrate (the molecular formula of methane is CH4, the content of methane in natural gas is more than 96 percent) and the molecular formula of the ice is CH 4.6H 20. The onshore combustible ice mine is distributed in a high latitude or high-cold frozen soil layer, and the seabed combustible ice is distributed on the seabed surface with the water depth of 300-2000 m. China finds abundant combustible ice resources in south China sea, taking south China sea Hopkins and sea areas as examples, the mineral reserve area is 22km2, the thickness is 20m, the natural gas reserve is 194 hundred million m3, and the value is 700 million yuan (RMB).
The occurrence state of the seabed combustible ice is as follows: the water content of the sediment layer is about 80%, and the sediment layer is formed in a sediment layer (not in a stratum below the surface of the sea bottom) on the surface of the sea bottom, wherein the sea depth is 300-2000 m, the pressure is 3-20 Mpa, and the temperature is 2-3 ℃. The area of the seabed silt is usually several square kilometers, the thickness is dozens of meters or hundreds of meters, no boulder cover layer is arranged on the upper part of the silt, and only a small amount of carbonate reef is arranged (the thickness is 0.5-2 m, and the shape and the position are extremely irregular). The combustible ice is in the shape of white particles (the particle size is about 0.5-2 cm), and is uniformly distributed in the sludge. 1m3 combustible ice can decompose 164m3 natural gas 0.8m3 fresh water. The average abundance of combustible ice ore (sludge containing combustible ice) is 0.35, and 1m3 combustible ice ore can be produced: 1m3 (mine) 0.35 x 164m3 (gas)/(mine) 57.4m3 (natural gas).
The method mainly comprises the following steps of ① pyrolysis, namely, digging a well in sludge, injecting a large amount of hot water to decompose the combustible ice, digging the well to a sludge layer by a ② depressurization method, using the well to extract water in the sludge to reduce the pressure and decompose the combustible ice, digging the well to the sludge layer by a ③ replacement method, injecting CO2 into the well, and replacing the combustible ice by CO2, wherein although the method is researched and tested for more than 20 years, none of the methods succeeds, and the seabed also contains rich liquid fuel oil, petroleum and mineral deposits, wherein the fundamental reason why the liquid fuel oil, petroleum, mineral deposits and the combustible ice cannot be commercially exploited so far is mainly reflected in the following points:
first, limited to subsea work, the operator cannot submerge into the seabed where the relevant work is performed, which is the most significant reason for affecting subsea work.
Secondly, the exploitation of combustible ice requires the construction of an exploitation platform, which is limited by the deep depth of the sea bottom, and this is also a difficult point that the exploited combustible ice is difficult to export.
Thirdly, the device is limited by ocean currents on the seabed, so that the device is easy to shake the mining pipeline, and the stability and the safety of the construction of the mining platform are directly influenced.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a seabed mining platform construction system, which is used for solving the problems that the traditional technology is limited by seabed, is inconvenient for operators to submerge and is limited by sea depth, and is inconvenient for combustible ice to be led out; and the problems that the construction stability and the safety are influenced because the mining pipeline is easy to shake due to the limitation of ocean currents.
In order to solve the above problems, the present invention provides the following technical solutions:
the utility model provides a submarine mining platform construction system, includes the platform base, install the pipe that upwards cup joints in proper order on the platform base to form anhydrous derivation chamber way through a plurality of pipes, anhydrous derivation chamber way extends to more than the sea.
As an improved scheme, the outer parts of the guide pipes are coaxially sleeved with flexible auxiliary sealing cylinders.
As an improved scheme, the flexible auxiliary sealing cylinder is arranged along the shape of the outer walls of the guide pipes and is attached to the outer walls of the guide pipes.
As an improved scheme, the outer diameters of the plurality of guide pipes are gradually reduced from bottom to top.
As an improved scheme, the inner wall of the conduit is supported and fixedly connected inside the conduit through a support frame.
As an improved scheme, the supporting frame comprises a plurality of groups of criss-cross partition plates.
As an improved scheme, the guide pipe at the uppermost part is also uniformly provided with guys obliquely fixed on the seabed.
As an improvement, the platform base is fixed on the seabed by piles uniformly distributed on the bottom surface of the platform base.
As an improved scheme, a connecting convex ring is fixedly connected with the upper port of the guide pipe, and a clamping annular groove matched with the convex ring is formed in the lower end part of the guide pipe.
As an improved scheme, the outer diameter of the connecting convex ring is gradually reduced from bottom to top.
Compared with the prior art, the invention has the beneficial effects that:
the waterless working space is realized by arranging the waterless guide cavity channel, so that an operator can conveniently enter the platform base through the waterless guide cavity channel to perform related operations, such as drilling and the like; the cavity channel is anhydrous, so that the exploitation and derivation of the combustible ice are facilitated, the water content of the decomposed combustible ice is reduced, the working strength of the subsequent water separation of the combustible ice is reduced, and the production cost is reduced; the guide pipes are gradually butted to form an anhydrous guide cavity channel, so that the guide pipes can be assembled conveniently, and the construction of pipelines with different water depths is met; the guide pipes are clamped and assembled, so that the shaking caused by ocean currents can be matched, and the construction stability of the pipeline is ensured; the pipeline can be further fixed by using the inhaul cable, so that the safety of operators is ensured; the foundation for exploiting seabed liquid fuel oil, petroleum, mineral deposits and combustible ice is laid, the structure is simple, and the service life is long; simple and convenient operation and control, easy large-scale manufacture and installation and wide application range.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram according to a second embodiment of the present invention;
FIG. 3 is a schematic structural view of the stand according to the present invention;
FIG. 4 is a schematic view of the structure of the connecting protrusion ring of the present invention;
in the figure: 1-seabed, 2-sea surface, 3-platform base, 4-pile, 5-conduit, 6-inhaul cable, 7-flexible auxiliary sealing cylinder and 8-support frame; 9-connecting the convex ring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the first embodiment, the first step is,
as shown in fig. 1 to 4, the submarine exploration platform construction system includes a platform base 3, the platform base 3 is provided with guide pipes 5 which are sequentially sleeved upwards, and a plurality of guide pipes 5 form a waterless export cavity, and the waterless export cavity extends to above the sea surface 2.
The outer parts of the plurality of guide pipes 5 are coaxially sleeved with flexible auxiliary sealing cylinders 7, and the sealing effect can be further realized by utilizing the flexible auxiliary sealing cylinders 7.
The flexible auxiliary sealing cylinder 7 is arranged along the shape of the outer walls of the plurality of guide pipes 5 and is attached to the outer walls of the guide pipes 5.
The inner wall of the conduit is supported and fixedly connected inside the conduit through the support frame, so that the strength of the conduit is improved, and the stability and the safety in the mining process are guaranteed.
A plurality of drilling ports are formed in the platform base, independent well drilling can be achieved through each drilling space, and exploitation of combustible ice is achieved, wherein seals are arranged at openings of the drilling ports and used for being selectively opened or closed in the actual using process.
The support frame 8 comprises a plurality of groups of criss-cross partition plates, so that the structure of the guide pipe 5 is strengthened, and the stability is ensured.
The guide pipe 5 at the top is evenly provided with inhaul cables 6 which are obliquely fixed on the seabed 1, so that the stability and the safety are improved.
The platform base 3 is fixed on the seabed 1 through the pile columns 4 uniformly distributed on the bottom surface of the platform base, so that the platform base 3 is convenient to fix.
The upper port of the guide pipe 5 is fixedly connected with a connecting convex ring 9, and the lower end part of the guide pipe 5 is provided with a clamping annular groove matched with the convex ring, so that the two guide pipes 5 can be conveniently fixed.
The outer diameter of the connecting convex ring 9 is gradually reduced from bottom to top, so that quick centering and fixing are conveniently realized.
In the second embodiment, the first embodiment of the method,
the present embodiment differs from the first embodiment in that the diameter of the conduit 5 is different.
The outer diameters of the plurality of guide pipes 5 are gradually decreased from bottom to top, wherein the outer diameters are gradually decreased, so that the stability of the pipeline can be improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A submarine mining platform construction system which is characterized in that: including platform base (3), install upwards pipe (5) that cup joint in proper order on platform base (3) to form anhydrous derivation chamber through a plurality of pipes (5) and say, anhydrous derivation chamber says and extends to more than sea (2).
2. The seafloor mining platform construction system of claim 1, wherein: the outer parts of the plurality of guide pipes (5) are coaxially sleeved with flexible auxiliary sealing cylinders (7).
3. The seafloor mining platform construction system of claim 2, wherein: the flexible auxiliary sealing cylinder (7) is arranged along the shape of the outer walls of the guide pipes (5) and is attached to the outer walls of the guide pipes (5).
4. The seafloor mining platform construction system of claim 1, wherein: the outer diameters of the plurality of guide pipes (5) are gradually decreased from bottom to top.
5. The seafloor mining platform construction system of claim 1, wherein: the inner wall of the conduit (5) is also supported and fixedly connected inside the conduit through a support frame (8).
6. The seafloor mining platform construction system of claim 5, wherein: the support frame (8) comprises a plurality of groups of crisscross partition plates.
7. The seafloor mining platform construction system of claim 1, wherein: the guide pipe (5) at the top is also evenly provided with inhaul cables (6) which are obliquely fixed on the seabed (1).
8. The seafloor mining platform construction system of claim 1, wherein: the platform base (3) is fixed on the seabed (1) through pile columns (4) uniformly distributed on the bottom surface of the platform base.
9. The seafloor mining platform construction system of claim 1, wherein: the upper port of the guide pipe (5) is fixedly connected with a connecting convex ring (9), and the lower end part of the guide pipe (5) is provided with a clamping annular groove matched with the convex ring.
10. The seafloor mining platform construction system of claim 9, wherein: the outer diameter of the connecting convex ring (9) is gradually reduced from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341942.5A CN111022001A (en) | 2019-12-24 | 2019-12-24 | Submarine mining platform construction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341942.5A CN111022001A (en) | 2019-12-24 | 2019-12-24 | Submarine mining platform construction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022001A true CN111022001A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911341942.5A Pending CN111022001A (en) | 2019-12-24 | 2019-12-24 | Submarine mining platform construction system |
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| Country | Link |
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| CN (1) | CN111022001A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373928A (en) * | 2010-08-16 | 2012-03-14 | 范福仓 | Building method of mineshaft for exploring natural gas hydrate |
| CN103328756A (en) * | 2010-12-13 | 2013-09-25 | 雪佛龙美国公司 | Method, system and apparatus for deployment of umbilicals in subsea well operations |
| CN103562491A (en) * | 2011-02-03 | 2014-02-05 | 马奎斯股份有限公司 | Containment unit and method of using same |
| US20150354335A1 (en) * | 2013-09-30 | 2015-12-10 | Saudi Arabian Oil Company | Apparatus and method for producing oil and gas using buoyancy effect |
| CN108240201A (en) * | 2016-12-25 | 2018-07-03 | 天津欧神科技有限公司 | A kind of seabed compliant riser armor products |
-
2019
- 2019-12-24 CN CN201911341942.5A patent/CN111022001A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373928A (en) * | 2010-08-16 | 2012-03-14 | 范福仓 | Building method of mineshaft for exploring natural gas hydrate |
| CN103328756A (en) * | 2010-12-13 | 2013-09-25 | 雪佛龙美国公司 | Method, system and apparatus for deployment of umbilicals in subsea well operations |
| CN103562491A (en) * | 2011-02-03 | 2014-02-05 | 马奎斯股份有限公司 | Containment unit and method of using same |
| US20150354335A1 (en) * | 2013-09-30 | 2015-12-10 | Saudi Arabian Oil Company | Apparatus and method for producing oil and gas using buoyancy effect |
| CN108240201A (en) * | 2016-12-25 | 2018-07-03 | 天津欧神科技有限公司 | A kind of seabed compliant riser armor products |
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Application publication date: 20200417 |
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