CN116335567A - Protection device for natural gas hydrate exploitation - Google Patents
Protection device for natural gas hydrate exploitation Download PDFInfo
- Publication number
- CN116335567A CN116335567A CN202310616950.6A CN202310616950A CN116335567A CN 116335567 A CN116335567 A CN 116335567A CN 202310616950 A CN202310616950 A CN 202310616950A CN 116335567 A CN116335567 A CN 116335567A
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- natural gas
- protection
- sealing
- plate
- fixedly connected
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- 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 22
- 238000007789 sealing Methods 0.000 claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 6
- 239000003345 natural gas Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract 1
- 230000008520 organization Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 239000013049 sediment Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Abstract
The invention relates to the technical field of natural gas exploitation and discloses a protection device for natural gas hydrate exploitation, which comprises a protection ring body and a pipeline, wherein a hinge is fixedly arranged on the outer wall of the protection ring body, a sealing piece is arranged at the edge of the outer wall of the protection ring body, the protection ring body is rotatably connected with a protection plate through the hinge, and an inner lining plate is fixedly arranged on the inner wall of the protection ring body. According to the invention, the periphery of a drilling hole is protected by adopting the organization structure of the telescopic spring, the clamping column, the hinge and the protection plate, equipment is fed into the drilling hole, after the equipment reaches a designated layer, the force of the telescopic spring is released, the protection plate is driven to move, the clamping column is abutted with the top of a mining layer, and the sealing ring is arranged outside the protection ring body, so that the clamping column is abutted and sealed at the same time.
Description
Technical Field
The invention relates to the technical field of natural gas exploitation, in particular to a protection device for natural gas hydrate exploitation.
Background
Natural gas hydrate is a white solid substance with strong combustion force, mainly composed of water molecules and hydrocarbon gas molecules (mainly methane), and is a white solid crystalline substance formed in the process of interaction of gas or volatile liquid and water under certain conditions (proper temperature, pressure, gas saturation, salinity of water, pH value and the like). Upon an increase in temperature or a decrease in pressure, methane gas escapes and the solid hydrates tend to disintegrate.
According to the device for exploiting natural gas hydrate disclosed in patent number 201110138170.2, sediment can be primarily separated and backfilled into an exploitation well by adopting a bottom-up exploitation mode, sediment backfill is important in the exploitation process of combustible ice, and if sediment backfill is not carried out, a large hole is left on the seabed, so that geological disasters such as collapse can be caused. In order to solve the problem more simply, the designed exploitation drill bit is firstly directly penetrated into the lowest part of the exploitation well and exploited from bottom to top, so that most of sediment can be precipitated downwards due to the fact that the density of the mud is higher than that of seawater, and the sediment can also be used for burying the bottom continuously along with the upward exploitation of the drill bit, so that most of holes of the exploitation well are basically filled with the sediment at last, and the safety is more facilitated. The exploitation drill bit of the invention discards the traditional heat activation and decompression method, and the innovative method for exploiting the combustible ice by using water circulation has the advantages of more convenience, rapidness, energy consumption saving, simple facility, low cost, easy control, easy movement and high reliability. The method improves the utilization rate of energy, reduces energy dissipation and loss, fundamentally improves the economy of exploitation, and lays a foundation for realizing commercial exploitation; from the safety aspect, the drill bit emphasizes the sealing performance, reduces the occurrence of accidents in the exploitation process from two aspects of exploitation principle and equipment, and has the characteristics of safety and reliability; from the perspective of equipment, the drill bit has simple structure, single and definite functions of each part, mutual coordination, convenient design and manufacture, monitoring and maintenance, but the protection work for exploitation is imperfect in the actual use process,
(1) Aiming at the problem that the existing protection device cannot seal the natural gas hydrate after the exploitation is completed in the natural gas hydrate exploitation process, so that a cavity is formed in the hydrate layer, a fault is formed in the stratum, collapse or large-area subsidence is easily caused when an earthquake or ground operation is needed, and a large potential safety hazard exists;
(2) Aiming at the problems that the existing protection device needs to be sealed and protected after the work is finished, the operation is complex, the protection measures are not in place, and the time is wasted;
therefore, the invention provides a protection device for natural gas hydrate exploitation.
Disclosure of Invention
Aiming at the defects of the prior art/comparison document, the invention provides a protection device for natural gas hydrate exploitation, which has the advantages of being capable of rapidly sealing, storing displaced gas for a long time and being not easy to cause ground collapse, and solves the problems covered by the background technology.
The invention provides the following technical scheme: the utility model provides a protection device of natural gas hydrate exploitation, includes guard circle body and pipeline, the outer wall fixed mounting of guard circle body has the hinge, the edge of guard circle body outer wall is equipped with the sealing washer, the guard circle body is connected with the protection shield through the hinge rotation, the inner wall fixed mounting of guard circle body has interior welt, the last fixed surface of interior welt installs the sealing strip, the outer wall fixed mounting of protection shield has the card post, one side fixedly connected with extension spring of protection shield, the seal groove has been seted up at the middle part of guard circle body, the through hole has been seted up to the both sides of guard circle body inner chamber, the fixed slot has an inside fixed mounting reset spring, reset spring's opposite side fixedly connected with fixed plate, the inner chamber fixed mounting of protection shield has the torsional spring linkage, one side fixedly connected with pressure plate of torsional spring, the other end fixedly connected with pole of torsional spring, the opposite side fixedly connected with cardboard of linkage pole.
Preferably, a movable wheel is fixedly arranged at the bottom of the inner wall of the fixed groove, and a sealing plate is arranged on the upper surface of the movable wheel.
Preferably, the reset groove is formed in two sides of the pipeline, the telescopic rod is fixedly connected to the inner wall of the reset groove, the rotating shaft is fixedly connected to the other end of the telescopic rod, the fixing rod is fixedly connected to the other end of the rotating shaft, the clamping block is fixedly connected to the other end of the fixing rod, and the linkage spring is fixedly connected to the bottom of the clamping block.
Preferably, the number of the movable wheels is a plurality of, and the intervals among the plurality of movable wheels are equal.
Preferably, the number of the sealing strips is eight, and the spacing between the eight sealing strips is equal.
Preferably, the width and height of the sealing plate are smaller than those of the through hole, and the length of the sealing plate is smaller than half of that of the inner cavity of the sealing groove.
Preferably, the upper surface of the clamping block is of a quarter arc design, and the height value of the clamping block is smaller than that of the through hole.
Compared with the prior art/comparison document, the invention has the following beneficial effects:
1. this protection device of natural gas hydrate exploitation through adopting the organizational structure of extension spring, the card post, hinge and protection shield, can protect the periphery of its drilling, send into the inside of drilling equipment, after it reaches appointed layer, because its original power to the spring is received and is pressed, because its inside is the hydrate after reaching its exploitation layer, the spring has the space of receiving and releasing, its extension spring's power obtains releasing, and then drive the protection shield motion, make the top butt joint of card post and exploitation layer, and because the outside of its guard circle body is equipped with the sealing washer, and then it seals it in the butt joint of card post, the device effectually has improved its peripheral leakproofness of exploitation, can improve its convenience of operation in the use, make things convenient for the seal in its exploitation process.
2. According to the protection device for natural gas hydrate exploitation, the pressure plate is touched after the protection plate is contacted with the top of a stratum by adopting the components of the pressure plate, the torsion spring, the linkage rod, the clamping plate and the clamping plate are driven to rise by the force of the pressure plate to enable the force of the return spring to be released, the fixing plate is driven to move by the return spring, the sealing plate is driven to form an impetus by the fixing plate to enter a cavity of the sealing groove through penetrating Kong Danshe, and as the sealing plate after the sealing plate is ejected can form a whole circle, the sealing strip can seal the gap between the sealing grooves, the sealing hole after the sealing strip is exploited by utilizing the cooperation of the sealing groove and the sealing strip, the tightness of the device can be effectively improved, the ground collapse or collapse caused by earthquakes after the exploitation can be effectively prevented, and the exploitation protection effect is improved.
3. This protection device of natural gas hydrate exploitation through adopting the subassembly of pipeline, fixture block, telescopic link, pivot and dead lever, after the exploitation, through pulling the pipeline, and then the side motion of fixture block along interior welt, because its fixture block is quarter radian design, can make it utilize the pivot to drive the fixture block and carry out the angle deflection in the use, make it get into reset groove's inside the cavity, and then accomodate its fixture block for it can take out the pipeline after the exploitation is finished, the device effectually ensured the security of exploitation in-process, prevented that its gas from revealing, be convenient for take out the pipeline away.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a contracted structure of the device of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 1B according to the present invention;
FIG. 5 is a schematic view of a pipe connection structure according to the present invention;
fig. 6 is a schematic diagram of the overall top-view expanded structure of the present invention.
In the figure: 1. a protective ring body; 2. a protective plate; 3. an inner liner; 4. a sealing strip; 5. a hinge; 6. a sealing plate; 7. a telescopic spring; 8. a clamping column; 9. a movable wheel; 10. a through hole; 11. sealing grooves; 12. a sealing sheet; 13. a pressure plate; 14. a return spring; 15. a fixing plate; 16. a clamping plate; 17. a linkage rod; 18. a torsion spring; 19. a fixing groove; 20. a reset groove; 21. a rotating shaft; 22. a telescopic rod; 23. a clamping block; 24. a fixed rod; 25. a linkage spring; 26. a pipeline.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, a protection device for exploiting natural gas hydrate comprises a protection ring body 1 and a pipeline 26, wherein a hinge 5 is fixedly arranged on the outer wall of the protection ring body 1, a sealing plate 12 is arranged on the edge of the outer wall of the protection ring body 1, a protection plate 2 is rotatably connected to the protection ring body 1 through the hinge 5, an inner lining plate 3 is fixedly arranged on the inner wall of the protection ring body 1, a sealing strip 4 is fixedly arranged on the upper surface of the inner lining plate 3, a clamping post 8 is fixedly arranged on the outer wall of the protection plate 2, a telescopic spring 7 is fixedly connected to one side of the protection plate 2, a sealing groove 11 is formed in the middle of the protection ring body 1, through holes 10 are formed in two sides of the inner cavity of the protection ring body 1, a fixing groove 19 is formed in the inner cavity of the protection plate 2, a reset spring 14 is fixedly arranged in one side of the fixing groove 19, a fixing plate 15 is fixedly connected to the other side of the reset spring 14, a torsion spring 18 is fixedly arranged in the inner cavity of the protection plate 2, a pressure plate 13 is fixedly connected to one side of the torsion spring 18, a clamping plate 16 is fixedly connected to the other side of the linkage rod 17, a movable wheel 9 is fixedly arranged at the bottom of the inner wall of the fixing groove 19, and a sealing plate 6 is placed on the upper surface of the movable wheel 9.
Wherein; the two sides of the pipeline are provided with a reset groove 20, the inner wall of the reset groove 20 is fixedly connected with a telescopic rod 22, the other end of the telescopic rod 22 is fixedly connected with a rotating shaft 21, the other end of the rotating shaft 21 is fixedly connected with a fixing rod 24, the other end of the fixing rod 24 is fixedly connected with a clamping block 23, and the bottom of the clamping block 23 is fixedly connected with a linkage spring 25.
Wherein; the number of the movable wheels 9 is a plurality of, and the intervals among the plurality of movable wheels 9 are equal.
Wherein; the number of the sealing strips 4 is eight, and the intervals among the eight sealing strips 4 are equal.
Wherein; the width and height of the sealing plate 6 are smaller than those of the through hole 10, and the length of the sealing plate 6 is smaller than half of the length of the inner cavity of the sealing groove 11.
Wherein; the upper surface of the clamping block 23 is of a quarter arc design, and the height value of the clamping block is smaller than that of the through hole 10.
Wherein; through adopting the organizational structure of extension spring 7, card post 8, hinge 5 and protection shield 2, can protect the periphery of its drilling, send into the inside of drilling equipment, after it reaches appointed layer, the power of its extension spring 7 is released, and then drive protection shield 2 motion, make the top butt joint of card post 8 and exploitation layer, and because the outside of its guard circle body 1 is equipped with sealing washer 12, and then it seals it in the butt joint of card post 8, the device effectually has improved its exploitation peripheral leakproofness, can improve its convenience of operation in the use, make things convenient for the seal of its exploitation in-process.
Wherein; through adopting the pressure plate 13, the torsional spring 18, the gangway 17, the clamping plate 16, the return spring 14, the subassembly of fixed plate 15 and closing plate 6, the device can touch the pressure plate 13 after the top in the protection plate 2 and stratum contacts, and then utilize torsion spring 18 to form lever holding power to the gangway 17 through the power of pressure plate 13, and then drive the clamping plate 16 and rise, make the power of return spring 14 obtain releasing, and then drive the fixed plate 15 motion through return spring 14, and then form the thrust to closing plate 6 through the fixed plate 15, make closing plate 6 launch the cavity that gets into seal groove 11 through penetrating hole 10, seal the hole after using seal groove 11 and sealing strip 4 to carry out sealing treatment, the device can effectually improve its sealed type after exploitation, can effectually prevent the ground that causes after its exploitation from collapsing or the collapse that the earthquake caused, the protection effect of exploitation has been improved.
Wherein; through adopting the subassembly of pipeline 26, fixture block 23, telescopic link 22, pivot 21 and dead lever 24, the device cooperation through-hole 10 can utilize this group of joint device to carry out spacingly it after going deep into pipeline 26, and can not sink after the pipeline reaches the certain position, and can upwards break away from owing to the surface adoption radian design of fixture block 23 after the work is finished, and protection device pops out and seals, the device effectually ensured the security in the exploitation, prevented that its gas from revealing, be convenient for take out to pipeline 26 and leave.
The protection ring body 1 and the protection plate 2 are brought into the exploitation hole by the aid of the pipeline 26, after the protection plate reaches a specified layer, the force of the telescopic spring 7 is released, the protection plate 2 is driven to move, the clamping columns 8 are butted with the top of the exploitation layer, the sealing piece 12 is arranged outside the protection ring body 1, the clamping columns 8 are butted and sealed, the sealing performance of the periphery of the exploitation is effectively improved, the device is matched with the through holes 10, the pipeline 26 can be limited by the aid of the clamping devices, the pipeline cannot sink after the pipeline reaches a certain position, after the exploitation is finished, the clamping blocks 23 move along the side face of the inner lining plate 3 by pulling the pipeline 26, the clamping blocks 23 are designed to be quarter radian, the clamping blocks 23 are driven to deflect at an angle by the aid of the rotating shafts 21 in the use process, the clamping blocks 23 enter the inside a cavity of the reset groove 20, the clamping blocks 23 are stored, the protection device can be pulled out and sealed by the aid of the protection device after the exploitation is finished, the pipeline 26 is matched with the through holes 10, the pipeline 26 can be driven to move by the aid of the sealing plate 13, the sealing plate is driven by the aid of the sealing plate, the sealing plate is contacted with the sealing plate 13, the sealing plate is contacted with the sealing plate 11 by the sealing plate, the sealing plate is driven by the sealing plate 13, the sealing plate is further driven by the sealing plate 11, and the sealing plate is driven by the sealing plate is contacted by the sealing plate 13 through the sealing plate, and the sealing plate is driven by the sealing plate 11 through the sealing plate, the sealing plate is driven by the sealing plate 13, and the sealing plate is further 13 is contacted by the sealing plate 13.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a protection device of natural gas hydrate exploitation, includes guard circle body (1) and pipeline (26), its characterized in that: the outer wall fixed mounting of guard circle body (1) has hinge (5), the edge of guard circle body (1) outer wall is equipped with sealing washer (12), guard circle body (1) is connected with protection shield (2) through hinge (5) rotation, the inner wall fixed mounting of guard circle body (1) has interior welt (3), the upper surface fixed mounting of interior welt (3) has sealing strip (4), the outer wall fixed mounting of protection shield (2) has card post (8), one side fixedly connected with extension spring (7) of protection shield (2), seal groove (11) have been seted up at the middle part of guard circle body (1), through hole (10) have been seted up to the both sides of guard circle body (1) inner chamber, fixed slot (19) have been seted up to the inner chamber of protection shield (2), the inside fixed mounting of fixed slot (19) one side has reset spring (14), the opposite side fixedly connected with fixed plate (15) of reset spring (14), the inner chamber fixed mounting of protection shield (2) has torsional spring (18), one side fixedly connected with pressure plate (13) of torsional spring (18), link lever (17), the other side of the linkage rod (17) is fixedly connected with a clamping plate (16).
2. A protection device for natural gas hydrate production as claimed in claim 1, wherein: reset groove (20) have been seted up to the both sides of pipeline (26), the inner wall fixedly connected with telescopic link (22) of reset groove (20), the other end fixedly connected with pivot (21) of telescopic link (22), the other end fixedly connected with dead lever (24) of pivot (21), the other end fixedly connected with fixture block (23) of dead lever (24), the bottom fixed connection linkage spring (25) of fixture block (23).
3. A protection device for natural gas hydrate production as claimed in claim 1, wherein: the number of the movable wheels (9) is a plurality of, and the intervals among the plurality of movable wheels (9) are equal.
4. A protection device for natural gas hydrate production as claimed in claim 1, wherein: the number of the sealing strips (4) is eight, and the intervals among the eight sealing strips (4) are equal.
5. A protection device for natural gas hydrate production as claimed in claim 1, wherein: the width value and the height value of the sealing plate (6) are smaller than those of the through hole (10), and the length value of the sealing plate (6) is smaller than half of the length value of the inner cavity of the sealing groove (11).
6. A protection device for natural gas hydrate production according to claim 2, characterized in that: the upper surface of the clamping block (23) is of a quarter arc design, and the height value of the clamping block is smaller than that of the through hole (10).
7. A protection device for natural gas hydrate production as claimed in claim 1, wherein: the bottom of the inner wall of the fixed groove (19) is fixedly provided with a movable wheel (9), and a sealing plate (6) is arranged on the upper surface of the movable wheel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310616950.6A CN116335567B (en) | 2023-05-29 | 2023-05-29 | Protection device for natural gas hydrate exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310616950.6A CN116335567B (en) | 2023-05-29 | 2023-05-29 | Protection device for natural gas hydrate exploitation |
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| Publication Number | Publication Date |
|---|---|
| CN116335567A true CN116335567A (en) | 2023-06-27 |
| CN116335567B CN116335567B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310616950.6A Active CN116335567B (en) | 2023-05-29 | 2023-05-29 | Protection device for natural gas hydrate exploitation |
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| CN (1) | CN116335567B (en) |
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2023
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| CN116335567B (en) | 2023-10-03 |
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