CN117022543A - Mobile self-help anchoring and positioning maritime work platform - Google Patents
Mobile self-help anchoring and positioning maritime work platform Download PDFInfo
- Publication number
- CN117022543A CN117022543A CN202311169538.0A CN202311169538A CN117022543A CN 117022543 A CN117022543 A CN 117022543A CN 202311169538 A CN202311169538 A CN 202311169538A CN 117022543 A CN117022543 A CN 117022543A
- Authority
- CN
- China
- Prior art keywords
- anchor
- floating body
- anchoring
- middle floating
- work platform
- 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
- 238000004873 anchoring Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000003208 petroleum Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B21/27—Anchors securing to bed by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a mobile self-help anchoring and positioning maritime work platform, which comprises a living work platform, wherein a middle floating body is arranged below the living work platform, and the middle floating body is connected with the living work platform through a support column; an anchor base capable of lifting between the middle floating body and the seabed is arranged below the middle floating body, and the anchor base is provided with a suction anchor; an anchor chain is arranged between the anchor base and the middle floating body. The invention is convenient for moving on the sea and is convenient for anchoring and positioning; is suitable for the exploitation of the marginal oilfield petroleum with the water depth of 150-500 meters.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a mobile self-help anchoring and positioning maritime work platform.
Background
For shallow oilfield operations, jack-up platforms or jacket platforms are typically used.
The jack-up platform is provided with a spud leg which can move up and down. When the pile leg is required to be moved, the pile leg is lifted, the platform floats on the water surface, and the pile leg is dragged to the working sea by using a tugboat. After the destination is reached, the pile leg is put down and inserted into the seabed, and then the pile leg fixed on the seabed is used for lifting the platform above the sea surface, so that the platform is built, and offshore operation is carried out.
The jacket platform is characterized in that a pile driving ship is utilized to drive a sea pile fixed with the sea bed on the sea bed, and then a transport ship such as a semi-submersible ship is utilized to transport an upper platform of the jacket to the sea pile, so that the sea pile and the upper platform are connected.
For deep sea fields, floating production and storage Facilities (FPSOs) are commonly used internationally in anchored position. Such an arrangement requires costly deployment of the mooring system and the oil delivery system at the deep sea. The FPSO is then towed to the corresponding sea area and connected to the mooring system to tie up the FPSO for local sea operations.
In addition, there is also a dynamically positioned marine platform that is common internationally. Such platforms float above the sea surface. The underwater platform is provided with a plurality of propellers, the steering and rotating speeds of the propellers can be coordinated through the intelligent control system, so that the propellers can act together to counteract the force of the outside on the platform, and the platform can be dynamically positioned at a sea area.
Among the above-mentioned platform types, the jack-up platform or jacket platform used for shallow oil field operations has an exponentially increasing construction cost with increasing water depth, and thus is not well suited for exploitation of marginal oil fields in sea areas of 150-500 m depth.
The FPSO for anchoring has the disadvantage of high anchor installation costs and poor mobility. Therefore, marginal oil field development with a wide distribution of locations is economically unsuitable for small reserves.
The dynamic positioning maritime work platform needs to start a plurality of positioning paddles all the time, so that the operation cost is relatively high, the positioning capability of a dynamic positioning mode is relatively weak, and the dynamic positioning maritime work platform cannot cope with severe sea conditions. And are therefore commonly used in oilfield exploration operations.
The above type of platform is not suitable for marginal oil fields distributed at water depths of 150-500 m due to small reserves, scattered distribution, and economically unsuitable for large-scale investment exploitation.
There is no suitable offshore platform for the exploitation of petroleum in marginal fields with water depths of 150-500 meters.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a mobile self-service anchoring and positioning maritime work platform.
The invention solves the technical problems by the following technical scheme:
a movable self-help anchoring and positioning maritime work platform comprises a living work platform, wherein a middle floating body capable of providing buoyancy for the living work platform is arranged below the living work platform, and the middle floating body is connected with the living work platform through a support column; an anchor base capable of lifting between the middle floating body and the seabed is arranged below the middle floating body, and the anchor base is provided with a suction anchor capable of fixing the anchor base on the seabed; an anchor chain is arranged between the anchor base and the middle floating body.
The anchor base has three suction anchors capable of simultaneously touching the seabed.
The anchor base comprises a base body, and the suction anchor is arranged on the base body.
The middle floating body is provided with an anchor chain retraction and storage cabin which can retract and store an anchor chain.
The anchor chain comprises a plurality of tensioning type anchor chain legs, and two ends of each tensioning type anchor chain leg are respectively connected with the middle floating body and the anchor base.
The number of the tensioning type anchor chain legs is three.
The anchor chain also comprises a plurality of catenary anchor chain legs; the two ends of the catenary anchor chain leg are respectively connected with the middle floating body and the anchor base.
The number of the catenary anchor chain legs is three.
The suction anchor is cylindrical.
The number of the struts is three.
The invention has the beneficial effects that: the marine platform is convenient to move on the sea and simultaneously convenient for anchoring and positioning; the mooring device adopting the suction anchor and the anchor chain has relatively low operation and manufacturing cost, is convenient for the fastening operation in the sea area with the depth of 150-500 meters, and has low fastening cost; is suitable for the exploitation of the marginal oilfield petroleum with the water depth of 150-500 meters. The marine platform can also bear harsher sea conditions.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention in a fixed state.
Fig. 2 is a schematic perspective view of the floating state according to the preferred embodiment of the present invention.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
As shown in fig. 1 and 2, a mobile self-service anchoring and positioning marine platform comprises a living work platform 10, wherein a middle floating body 20 capable of providing buoyancy for the living work platform is arranged below the living work platform 10, and the middle floating body 20 is connected with the living work platform 10 through a support 11. The number of the struts 11 is three.
An anchor base 30 capable of lifting between the middle floating body and the seabed is arranged below the middle floating body 20, and the anchor base 30 is provided with a suction anchor 31 capable of fixing the anchor base to the seabed; an anchor chain 40 is provided between anchor base 30 and intermediate float 20.
The anchor foot 30 has three suction anchors 31 that can touch the seabed at the same time. The three suction anchors always touch the seabed at the same time so as to adapt to different seabed planes and are buried into the seabed together. In this embodiment, the suction anchor is cylindrical.
The anchor mount 30 includes a mount body 32, and the suction anchor 31 is fixedly disposed on the mount body 32. In this embodiment, the base body is composed of three box-type members, the three box-type members enclose a triangle, and the three suction anchors are respectively located at three points of the triangle.
The middle floating body 20 is provided with a chain retraction and storage cabin 21 which can retract and store the chain. In this embodiment, the middle floating body includes three buoyancy tanks, and the three buoyancy tanks enclose a triangle.
The anchor chain 40 comprises a plurality of tensioning type anchor chain legs 41, and two ends of the tensioning type anchor chain legs 41 are respectively connected with the middle floating body and the anchor base. The tensioning anchor chain legs 41 are three.
The anchor chain 40 further includes a plurality of catenary anchor chain legs 42; the ends of the catenary anchor legs 42 are connected to the central floating body and the anchor base, respectively. The catenary anchor legs 42 are three.
In fig. 1 and 2, a dashed circle 50 represents sea level and a dashed circle 60 represents sea bed.
The invention relates to a movable self-help anchoring and positioning maritime work platform which consists of a life work platform, a middle floating body and an anchor base from top to bottom.
When the novel multifunctional water-saving device is used, the life work platform is located above the water surface, and the life work platform mainly provides space for living life and operation of workers.
The middle floating body is buried below the water surface and is mainly used for providing buoyancy, and the buoyancy can support a living work platform at the upper part of the middle floating body and can be used for tensioning an anchor chain connected with the anchor base.
The middle floating body adopts the support post to lift the living platform above the water surface. Because the structures near the water surface are fewer, the acting force of external waves on the platform can be greatly reduced.
The anchor base adopts three mutually connected cylindrical suction anchors. Suction anchors are a commonly used device and use vacuum pressure to insert the anchor into the seabed for anchoring. The principle of the suction anchor is that water in a suction anchor cylinder is pumped out to create a vacuum environment in the cylinder, and then the suction anchor is pressed into the seabed by utilizing water pressure to play a role of fixing an anchor base.
The anchor base is tied to the middle floating body through an anchor chain. The anchor chain comprises two forms of anchor chain legs. The first is a tensioning type chain leg, also called a tensioning type vertical chain leg; such an anchor chain, due to the tension, is able to resist forces exerted on the platform by the outside when small displacements of the platform occur (in low sea conditions) in order to tie down the platform. The second is a catenary anchor leg that can send out a greater restoring force to tie down the main platform when the platform is displaced a greater amount (under harsher sea conditions).
The marine platform provided by the invention has two states of floating and fixing.
The first is a floating state, as shown in fig. 2. When the platform needs to move, a floating state is adopted. In this state, the anchor base 30 is integrally connected to the middle floating body 20 by the fixing means. And then towed by a tug to the target sea area.
The second is a fixed state, as shown in fig. 1. When the platform needs to be fixed, the fixing device is opened, the anchor chain is put down, and the anchor base can be put into the seabed. The suction anchor is then used to insert it into the seabed to secure the anchor foot. The tension force of the tension type anchor chain leg is controlled by adjusting the buoyancy of the middle floating body, and the pretightening force of the tension type anchor chain leg is controlled by adjusting the length of the catenary type anchor chain leg. In this way, the maximum displacement range of the platform under the corresponding sea conditions can be set.
The marine platform is convenient to move on the sea and simultaneously convenient for anchoring and positioning; the mooring device adopting the suction anchor and the anchor chain has relatively low operation and manufacturing cost, is convenient for the fastening operation in the sea area with the depth of 150-500 meters, and has low fastening cost; is suitable for the exploitation of the marginal oilfield petroleum with the water depth of 150-500 meters. The marine platform can also bear harsher sea conditions.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. The movable self-help anchoring and positioning maritime work platform comprises a living work platform and is characterized in that a middle floating body capable of providing buoyancy for the living work platform is arranged below the living work platform, and the middle floating body is connected with the living work platform through a support column; an anchor base capable of lifting between the middle floating body and the seabed is arranged below the middle floating body, and the anchor base is provided with a suction anchor capable of fixing the anchor base on the seabed; an anchor chain is arranged between the anchor base and the middle floating body.
2. The mobile self-anchoring positioned marine platform of claim 1, wherein the anchor base has three suction anchors capable of simultaneously touching the seabed.
3. The mobile self-anchoring positioning marine platform according to claim 2, wherein the anchor base comprises a base body and the suction anchor is provided on the base body.
4. The mobile self-service anchoring and positioning marine platform according to claim 1, wherein the middle floating body is provided with a chain retraction and storage cabin capable of retracting and storing a chain.
5. The mobile self-anchoring positioning marine platform according to claim 1, wherein the anchor chain comprises a plurality of tensioning anchor chain legs, and two ends of the tensioning anchor chain legs are respectively connected to the middle floating body and the anchor base.
6. The mobile self-anchoring marine platform according to claim 5, wherein the number of the tensioning type anchor chain legs is three.
7. The mobile self-anchoring marine platform according to claim 1, wherein the anchor chain further comprises a plurality of catenary anchor chain legs; the two ends of the catenary anchor chain leg are respectively connected with the middle floating body and the anchor base.
8. The mobile self-anchoring marine platform according to claim 7, wherein the number of catenary legs is three.
9. The mobile self-anchoring positioning marine platform according to claim 1, wherein the suction anchor is cylindrical.
10. The mobile self-anchoring marine platform according to claim 1, wherein the number of struts is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311169538.0A CN117022543A (en) | 2023-09-12 | 2023-09-12 | Mobile self-help anchoring and positioning maritime work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311169538.0A CN117022543A (en) | 2023-09-12 | 2023-09-12 | Mobile self-help anchoring and positioning maritime work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117022543A true CN117022543A (en) | 2023-11-10 |
Family
ID=88641242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311169538.0A Pending CN117022543A (en) | 2023-09-12 | 2023-09-12 | Mobile self-help anchoring and positioning maritime work platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117022543A (en) |
-
2023
- 2023-09-12 CN CN202311169538.0A patent/CN117022543A/en active Pending
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