CN207470161U - A kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method - Google Patents
A kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method Download PDFInfo
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- CN207470161U CN207470161U CN201721185762.9U CN201721185762U CN207470161U CN 207470161 U CN207470161 U CN 207470161U CN 201721185762 U CN201721185762 U CN 201721185762U CN 207470161 U CN207470161 U CN 207470161U
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- caldding layer
- gas hydrates
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- hydrates reservoir
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Abstract
The utility model provides a kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method, the gas hydrates reservoir includes upper caldding layer and lower caldding layer, it is the hydrate formation region of storing natural gas hydrate between the upper caldding layer and the lower caldding layer, described device includes piercing the well of the lower caldding layer from the seabed, concrete stanchion is equipped in the well, the concrete stanchion is through the hydrate formation region and connects the upper caldding layer and the lower caldding layer, the concrete stanchion includes several concrete piers with polymorphic structure stacked in the vertical direction, steel reinforcement cage is equipped in the concrete stanchion.Advantageous effect：Solve the problems, such as to bring during the exploitation of deep-sea causes gas hydrates reservoir to be destroyed, the lives and properties of the mankind is made to suffer a loss due to the unstability of seabed.
Description
Technical field
The utility model is related to marine resources and foundation engineering technical fields more particularly to a kind of churning method that is based on to reinforce deeply
The device of extra large gas hydrates reservoir.
Background technology
Gas hydrates are stored in the deposit hole of the coating under cryogenic high pressure environment, when temperature raising or
When pressure reduces, gas hydrates are just decomposed into gas-liquid mixture, and the gas-liquid mixture released is formed in coating
Superpressure, so that sediment consolidation degree substantially reduces.Particularly during the exploitation of gas hydrates of deep-sea, if
The variation of the temperature or pressure of gas hydrates in the coating in seabed is more than equilibrium condition, by gas hydrates point
The superpressure that solution generates will certainly influence the stability of coating, and then the stability of submarine slope may be made to reduce and cause to occur
Submarine landslide.It the submarine landslide occurred on a large scale not only can be to seabed engineerings such as deep-sea oil gas probing, oil pipeline, submarine cables
Facility damages, and can also lead to tsunami, greatly endangers the safety of human life's property.
Utility model content
In view of this, the embodiment of the utility model in order to may be brought when solving deep-sea exploitation of gas hydrates because
Seabed unstability and gas hydrates reservoir is caused to be destroyed, make the problem of the lives and properties of the mankind suffer a loss and provides one
Kind reinforces the device of deep-sea gas hydrates reservoir based on churning method.
The embodiment of the utility model provides a kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method, institute
It states gas hydrates reservoir and includes upper caldding layer and lower caldding layer, be storage between the upper caldding layer and the lower caldding layer
The hydrate formation region of gas hydrates, described device include piercing the well of the lower caldding layer from the seabed, be set in the well
There is concrete stanchion, the concrete stanchion is through the hydrate formation region and connects the upper caldding layer and the lower caldding layer,
The concrete stanchion includes several concrete piers with polymorphic structure stacked in the vertical direction, the concrete stanchion
It is interior to be equipped with steel reinforcement cage.
Further, the concrete pier is oval spherical structure.
Further, the long equatorial radius of the oval spherical structure：Short equatorial radius：The ratio between polar radius is 6:3:4.
Further, the well depth enters the lower caldding layer, and the diameter in the shaft bottom ties up diameter with the steel reinforcement cage
Identical, the well is partially located at the upper caldding layer, and the diameter of the upper end of the well is more than the diameter in the shaft bottom.
Further, the depth that the well depth enters the lower caldding layer is the 1/10 of the hydrate formation region thickness.
The advantageous effect that the technical solution that the embodiment of the utility model provides is brought is：(1) pass through the utility model
The method that deep-sea gas hydrates reservoir is reinforced based on churning method, is built in gas hydrates reservoir and builds the concrete column
Stake, when the mechanical property of the hydrate formation region reduces, due to stress concentration effect, main stress is by the concrete stanchion
It undertakes, so as to make active force that the gas hydrates reservoir born still in the range of it bears, therefore the day
The structure of right gas hydrate reservoir is reinforced, and can bear the gas water in the gas hydrates reservoir in seabed
Close the superpressure that object generates due to the variation of temperature or pressure is more than equilibrium condition；(2) cross section of the concrete stanchion is
Abnormal shape, interior to be equipped with steel reinforcement cage, which increase the abilities that the concrete stanchion resists vertical load and horizontal loading；(3) it is ellipse
The enlarged footing of ball structure increases its reinforcing scope and consolidation effect, so as to make the entire gas hydrates reservoir one
Determine to be stable in range.
Description of the drawings
Fig. 1 is the structure diagram of the utility model gas hydrates reservoir；
The step of Fig. 2 is the method that the utility model reinforces deep-sea gas hydrates reservoir based on churning method is schemed.
Specific embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type embodiment is further described.
The embodiment of the utility model provides to provide a kind of reinforces deep-sea gas hydrates reservoir based on churning method
Method, in order to which what may be brought when solving deep-sea exploitation of gas hydrates causes natural gas to be hydrated due to the unstability of seabed
The problem of lives and properties that object reservoir was destroyed, made the mankind suffer a loss.
It please refers to Fig.1, the gas hydrates reservoir includes upper caldding layer 6 and lower caldding layer 8, the upper caldding layer 6
It is the hydrate formation region 7 of storing natural gas hydrate between the lower caldding layer 8.In the present embodiment, the upper caldding layer 6
At extra large depth 1500m, the thickness of the upper caldding layer 6 is 400m, and the thickness of the hydrate formation region 7 is 200m, and 5 temperature of seabed is
10 ° or so, 5 pressure of seabed is about 15MPa.But it and is not limited to this embodiment.
It please refers to Fig.1 and Fig. 2, the side that deep-sea gas hydrates reservoir is reinforced based on churning method described in the present embodiment
Method specifically includes following steps：
Step 1：It carries out forming well 1 from seabed 5 to the wellbore construction of lower caldding layer 8 using deep sea drilling technology.
Carry out deep sea drilling using deep sea drilling platform, drilling depth and the upper caldding layer 6, the lower caldding layer 8 and
7 mechanical property of hydrate formation region is related, and the depth that the well 1 gos deep into the lower caldding layer 8 is 7 thickness of hydrate formation region
1/10.In the present embodiment, a diameter of 1.5m of the opening of the well 1, the well 1 reaches deep down into the 20m of the lower caldding layer 8
Depths, at this time shaft bottom diameter reserve 0.8m.Due to halmeic deposit complexity, drilling well difficulty is big, therefore to utilize multilayer sleeve drilling well
Technology, preferably by 6 layers of Casing Drilling Technique.The drilling fluid selected during drilling well is both needed to meet stratum basic demand, also be required
Decomposition of hydrate can effectively be prevented.
Step 2：Decentralization and the suitable steel reinforcement cage of 1 specification of well into the well 1.
Shaft bottom described in the straight tripping in of steel reinforcement cage, the size of the steel reinforcement cage is by the diameter of the well 1 and finally formed
Concrete stanchion 4 determines, under normal circumstances, the diameter in the shaft bottom and the steel reinforcement cage to tie up diameter identical.The present embodiment
In, the steel reinforcement cage ties up a diameter of 0.8m.
Step 3：Along the lowered inside rotary jet 2 of the steel reinforcement cage, the rotary jet 2 is made to reach the well
Bottom, the rotary jet 2 is in shaft bottom injection with the slurries for inhibiting gas hydrate dissociation and in the shaft bottom shape
The enlarged footing special-shaped into one.
The diameter of the rotary jet 2 is less than the internal diameter of the steel reinforcement cage, the rotary jet 2 is lowered into described
Shaft bottom, the enlarged footing are oval spherical structure, the long equatorial radius of the ellipse spherical structure：Short equatorial radius：The ratio between polar radius
It is 6:3:4.In the present embodiment, it is described ellipse spherical structure long equatorial radius, short equatorial radius, polar radius be respectively 1.2m,
0.6m、0.8m。
Step 4：The rotary jet 2 spray cement in the enlarged footing is starched and one is formed in the enlarged footing
Special-shaped concrete pier 3.
After the enlarged footing in the shaft bottom is formed, the slurries are changed to cement mortar and carry out recharge, until in the expansion
Form the concrete pier 3 in major part, the rotary jet 2 spray or recharge described in cement mortar when the pressure that uses be less than
The rotary jet 2 sprays the pressure used during the slurries.The concrete pier 3 is oval spherical structure, the ellipse chou
The long equatorial radius of structure：Short equatorial radius：Polar radius=6:3:4, the volume of the volume of the concrete pier and the enlarged footing
Unanimously.
Step 5：After the rotary jet 2 is made to move up the height (1.6m) of a concrete pier 3, the rotation spray
Emitter 2 on the slurries in step 4 concrete pier 3 using ejecting a new enlarged footing, the new enlarged footing
It is abnormally-structured.
New enlarged footing and the enlarged footing structure and size in step 3, step 4 are consistent in preferred steps 5.
Step 6：Step 4 and step 5 are repeated, until forming a concrete stanchion 4, the concrete stanchion 4 runs through institute
It states hydrate formation region 7 and connects the upper caldding layer 6 and the lower caldding layer 8, the day is reinforced using the concrete stanchion
Right gas hydrate reservoir.
For the concrete stanchion 4 similar to sugarcoated haws structure, cross section is abnormal shape, interior to be equipped with the steel reinforcement cage, this increasing
The ability that the concrete stanchion 4 has been added to resist vertical load and horizontal loading.
The advantageous effect that the technical solution that the embodiment of the utility model provides is brought is：(1) pass through the utility model
The method that deep-sea gas hydrates reservoir is reinforced based on churning method, is built in gas hydrates reservoir and builds the concrete column
Stake 4, when the mechanical property of the hydrate formation region 7 reduces, due to stress concentration effect, main stress is by the concrete column
Stake 4 undertakes, so as to make active force that the gas hydrates reservoir born still in the range of it bears, therefore it is described
The structure of gas hydrates reservoir is reinforced, and can bear the natural gas in the gas hydrates reservoir in seabed
The superpressure that hydrate generates due to the variation of temperature or pressure is more than equilibrium condition；(2) cross section of the concrete stanchion 4
Interior to be equipped with steel reinforcement cage for abnormal shape, which increase the abilities that the concrete stanchion 4 resists vertical load and horizontal loading；(3)
The enlarged footing of oval spherical structure increases its reinforcing scope and consolidation effect, so as to which the entire gas hydrates reservoir be made to exist
It is stable in a certain range.
Herein, the involved nouns of locality such as forward and backward, upper and lower are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method, the gas hydrates reservoir include upper
Coating and lower caldding layer are the hydrate formation region of storing natural gas hydrate between the upper caldding layer and the lower caldding layer,
It is characterized in that：Described device includes piercing the well of the lower caldding layer from seabed, and concrete stanchion is equipped in the well, described
Concrete stanchion includes through the hydrate formation region and the connection upper caldding layer and the lower caldding layer, the concrete stanchion
Several concrete piers with polymorphic structure stacked in the vertical direction, the concrete stanchion is interior to be equipped with steel reinforcement cage.
2. the device of deep-sea gas hydrates reservoir is reinforced based on churning method as described in claim 1, it is characterised in that：Institute
It is oval spherical structure to state concrete pier.
3. the device of deep-sea gas hydrates reservoir is reinforced based on churning method as claimed in claim 2, it is characterised in that：Institute
State the long equatorial radius of oval spherical structure：Short equatorial radius：The ratio between polar radius is 6:3:4.
4. the device of deep-sea gas hydrates reservoir is reinforced based on churning method as described in claim 1, it is characterised in that：Institute
It states well depth and enters the lower caldding layer, the diameter in the shaft bottom and the steel reinforcement cage tie up that diameter is identical, the local position of the well
In the upper caldding layer, the diameter of the upper end of the well is more than the diameter in the shaft bottom.
5. the device of deep-sea gas hydrates reservoir is reinforced based on churning method as claimed in claim 4, it is characterised in that：Institute
It states well depth and enters 1/10 of the depth of the lower caldding layer for the hydrate formation region thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721185762.9U CN207470161U (en) | 2017-09-15 | 2017-09-15 | A kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721185762.9U CN207470161U (en) | 2017-09-15 | 2017-09-15 | A kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method |
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| Publication Number | Publication Date |
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| CN207470161U true CN207470161U (en) | 2018-06-08 |
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| CN201721185762.9U Expired - Fee Related CN207470161U (en) | 2017-09-15 | 2017-09-15 | A kind of device that deep-sea gas hydrates reservoir is reinforced based on churning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435531A (en) * | 2017-09-15 | 2017-12-05 | 中国地质大学（武汉） | A kind of method and apparatus that deep-sea gas hydrates reservoir is reinforced based on churning method |
-
2017
- 2017-09-15 CN CN201721185762.9U patent/CN207470161U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435531A (en) * | 2017-09-15 | 2017-12-05 | 中国地质大学（武汉） | A kind of method and apparatus that deep-sea gas hydrates reservoir is reinforced based on churning method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20210915 |