CN111395293A - Ultra-deep water jacket platform - Google Patents
Ultra-deep water jacket platform Download PDFInfo
- Publication number
- CN111395293A CN111395293A CN202010228187.6A CN202010228187A CN111395293A CN 111395293 A CN111395293 A CN 111395293A CN 202010228187 A CN202010228187 A CN 202010228187A CN 111395293 A CN111395293 A CN 111395293A
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- legs
- vertical face
- frame
- jacket
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
Abstract
The invention discloses an ultra-deep water jacket platform, which comprises a jacket main body, a floating type launching truss and a riser, wherein the jacket main body comprises a plurality of main legs, at least 1 front vertical face frame and at least 1 side vertical face frame; a plurality of horizontal frame layers are arranged on the floating type launching truss at intervals, a guide hole is formed in each horizontal frame layer, and the waterproof guide pipe sequentially penetrates through the guide holes of the plurality of horizontal frame layers of the floating type launching truss from top to bottom. The ultra-deep water jacket platform disclosed by the invention utilizes the floating type launching truss to not only enhance the stability of the jacket main body under the working conditions of transportation, installation and the like, but also replace a horizontal supporting frame to provide supporting protection for the riser, so that the ultra-deep water jacket platform can be applied to the ultra-deep water marine environment with the water depth of more than 200 m.
Description
Technical Field
The invention relates to the technical field of ocean oil and gas development equipment, in particular to an ultra-deep water jacket platform.
Background
The water depth environment faced by offshore oil and gas exploration and development in China is usually a conventional sea area with the water depth within 200 meters. In recent years, as offshore oil and gas exploration and development in south China sea gradually moves to deep water, a batch of oil and gas fields with the water depth of more than 200 meters are discovered successively, so that a sea area with the water depth of more than 200 meters is called as an ocean deep water environment, and a sea area with the water depth of 300-400 meters is called as an ocean ultra-deep water environment.
The jacket platform has very wide application in the sea area with the water depth within 200m by virtue of excellent structural safety and economy. But at present, no jacket platform capable of working in sea areas with water depth more than 200 meters exists in China. The main reason is that the jacket platform under the ocean deep water environment (especially the ocean ultra-deep water environment) has the characteristics of large wave force in service, heavy structure and the like, the prior art of the conventional shallow water sea area jacket platform is still adopted, the technical schemes of the overall jacket frame, the structure planning, the water-resisting conduit supporting, the transportation and installation and the like are questioned due to the lack of applicability, the overall investment of the jacket platform is very high, and the economic and efficient development of ocean oil and gas resources in China is severely restricted. .
Disclosure of Invention
The invention aims to provide an ultra-deep water jacket platform, which is used for solving the problem that the conventional shallow water jacket platform cannot be suitable for the marine deep water environment, particularly the marine ultra-deep water environment, and can be used for starting the development situation of 200-400 m deep oil and gas fields in the south sea of China.
The invention provides an ultra-deep water jacket platform, which comprises a jacket main body, a floating type launching truss and a riser, wherein the jacket main body comprises a plurality of main legs, at least 1 front vertical face frame and at least 1 side vertical face frame; a plurality of horizontal frame layers are arranged on the floating type launching truss at intervals, each horizontal frame layer is provided with a guide hole, and the floating type launching truss is arranged in the jacket main body along the side vertical face frame; the riser sequentially penetrates through the guide holes of the plurality of horizontal frame layers of the floating type launching truss from top to bottom.
Preferably, a plurality of adjustable anti-sinking plates are arranged at a plurality of corners of the bottom of the jacket main body, each adjustable anti-sinking plate comprises a plurality of connecting short sections and an anti-sinking plate, adjacent connecting short sections are in adjustable connection with each other through relative displacement, and each anti-sinking plate is arranged at the bottom of the jacket main body through the plurality of connecting short sections.
Preferably, adjacent connecting short joints are assembled in a plug-in type or a clamping type.
Preferably, the jacket main body comprises 4 main legs, 2 front vertical face frames and 2 side vertical face frames, the projections of the horizontal cross sections of the 4 main legs are sequentially connected end to form a quadrangle, one front vertical face frame is arranged between the front 2 main legs to form the front of the jacket main body, the other front vertical face frame is arranged between the rear 2 main legs to form the back of the jacket main body, and the 2 side vertical face frames are respectively arranged between the front main legs and the rear main legs to form two side faces of the jacket main body.
Preferably, the floating launching truss further comprises 4 launching legs, 4 projections of horizontal cross sections of the launching legs are sequentially connected end to form a rectangle, wherein the front 2 launching legs of the floating launching truss and the rear 2 launching legs of the floating launching truss are sequentially connected through a plurality of X-shaped inclined struts from top to bottom to form a front vertical face and a rear vertical face of the floating launching truss, and the left 2 launching legs and the right 2 launching legs are sequentially connected through a plurality of V-shaped inclined struts from top to bottom to form a front vertical face and a rear vertical face of the floating launching truss.
Preferably, the side elevation frame is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom, and the main body part in the middle of and below the front elevation frame is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom.
Preferably, a plurality of horizontal support frames are arranged in the jacket main body in a transversely discontinuous manner, each horizontal support frame comprises a transverse support of two side vertical face frames, a transverse support of two front vertical face frames and a horizontal frame layer of the floating type launching truss, the transverse supports of the two side vertical face frames, the transverse supports of the two front vertical face frames and the horizontal frame layer of the floating type launching truss are located on the same horizontal plane to form a polygonal horizontal frame, a plurality of inclined supports are arranged on the polygonal horizontal frame to form the horizontal support frame, and the waterproof guide pipe sequentially penetrates through guide holes of the horizontal frame layers of the horizontal support frames from top to bottom.
Preferably, 2 auxiliary legs are additionally arranged on the front vertical face frame between the two main legs of each front vertical face frame, an X-shaped diagonal brace is arranged between the two auxiliary legs, a diagonal brace is arranged between the auxiliary leg and the main leg positioned on the side edge, two transverse supports are respectively arranged at the upper end and the lower end of the area of the auxiliary leg on the upper portion of the jacket main body, and the bottom ends of the two auxiliary legs of the front vertical face frame and the top end of the adjacent X-shaped diagonal brace are respectively connected through the two diagonal braces to form a pentagonal frame in the middle.
The invention has the beneficial effects that:
the invention discloses an ultra-deep water jacket platform, which utilizes a floating type launching truss to enhance the stability of a jacket main body under the working conditions of transportation, installation and the like, replaces a horizontal support frame to provide support protection for a water-resisting conduit, and effectively improves the survival operation capability of the jacket platform in a deep sea area with the depth of more than 200 meters, so that the jacket platform can be applied to the ultra-deep water marine environment.
Drawings
FIG. 1 is a front view of an ultra-deep water jacket platform provided in accordance with embodiment 1 of the present invention;
fig. 2 is a left side view of an ultra-deep water jacket platform provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a front elevation frame provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a side elevation frame provided in embodiment 1 of the present invention;
fig. 5 is an enlarged schematic view of an upper part of a front elevation frame provided in embodiment 1 of the present invention;
fig. 6 is a side view of a floating launching truss provided in accordance with embodiment 1 of the present invention;
fig. 7 is a schematic structural view of a horizontal support frame provided in embodiment 1 of the present invention;
fig. 8 is a structural schematic view of a joint between an adjustable anti-settling plate and an ultra-deep water jacket platform according to embodiment 1 of the present invention;
fig. 9 is a layout view of an adjustable anti-settling plate provided in embodiment 1 of the present invention.
Description of the drawings ①, ④ respectively indicate central axes of two main legs on a front vertical face frame, ②, ③ respectively indicate central axes of two sub-legs on a front vertical face frame, A, B respectively indicate central axes of two main legs on a side vertical face frame,
Detailed Description
In the following description of the embodiments, the terms "front", "rear", "left" and "right" are described based on the drawings attached to the specification.
Example 1
Example 1 provides an ultra-deep water jacket platform, the structure of which is described in detail below.
Referring to fig. 1 to 4, the ultra-deep jacket platform is a steel truss structure including a jacket body 1, a floating launching truss 2, and a riser pipe 3.
The jacket main body 1 comprises a plurality of main legs 11, at least 1 positive vertical face frame 12 and at least 1 side vertical face frame 13, the horizontal cross sections of the main legs 11 are sequentially connected end to form a polygon, a group of skirt pile sleeves 4 are arranged at the bottom of each main leg 11, and each group of skirt pile sleeves 4 are fixed on the seabed through steel piles.
The adjacent main legs 11 are connected in turn and alternately through a front vertical face frame 12 and a side vertical face frame 13 to form the jacket main body 1.
As a specific embodiment, preferably, the jacket main body 1 includes 4 main legs 11, 2 front vertical face frames 12 and 2 side vertical face frames 13, the horizontal cross-sections of the 4 main legs 11 are sequentially connected end to form a quadrilateral, one front vertical face frame 12 is disposed between the front 2 main legs 11 to form the front of the jacket main body 1, the other front vertical face frame 12 is disposed between the rear 2 main legs 11 to form the back of the jacket main body 1, and the 2 side vertical face frames 13 are respectively disposed between the front main leg 11 and the rear main leg 11 to form two sides of the jacket main body 1.
Furthermore, the side vertical face frame 13 is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom, and the main body part in the middle of and below the front vertical face frame 12 is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom, wherein each X-shaped inclined strut refers to two inclined struts which are obliquely crossed with the main leg 11 and form an angle of 45-60 degrees on the ground, and the two inclined struts are mutually crossed to form an X shape.
In order to further enhance the stability of the butt joint of the upper module, 2 auxiliary legs 110 are additionally arranged on the front vertical face frame 12 between the two main legs 11 of each front vertical face frame 12 to form 8 legs at the upper part of the jacket main body 1, an X-shaped inclined strut is arranged between the two newly added auxiliary legs 110, a diagonal inclined strut is arranged between the auxiliary leg 110 and the main leg 11 at the side edge, two transverse supports are respectively arranged at the upper end and the lower end of the area of the auxiliary leg 110 at the upper part of the jacket main body 1, and the bottom ends of the two auxiliary legs 110 of the front vertical face frame 12 and the top end of the adjacent X-shaped inclined strut are respectively connected through the two diagonal inclined struts to form a pentagonal frame at the middle part, so as to form a minimized waterplane structure, as shown in fig. 5. Minimizing the waterline surface structure may further enhance the stability of the jacket body 1 and reduce the dead weight of the jacket body 1. The minimized water line surface structure is analyzed through structural optimization design, the effect of bearing the maximum force by the least number of rod pieces is achieved, and the structural number and the sectional area of the water line surface are effectively reduced. This is because the majority of the ocean wave forces act on the sea surface, and thus such a minimized waterline surface structure greatly reduces the wave forces experienced by the jacket platform of the present invention.
Referring to fig. 6, a plurality of horizontal frame layers 21 are provided at intervals on the floating type launching truss 2, each horizontal frame layer 21 is provided with a guide hole 22, and the floating type launching truss 2 is arranged in the jacket main body 1 along the side vertical frame 13.
As a specific embodiment, specifically, the floating type launching truss 2 further includes 4 launching legs 20, and projections of horizontal cross sections of the 4 launching legs 20 are sequentially connected end to form a rectangle, as shown in fig. 6, a front elevation and a rear elevation of the floating type launching truss 2 are formed by sequentially connecting between the front 2 launching legs 20 and between the rear 2 launching legs 20 through a plurality of X-shaped diagonal braces from top to bottom, and a front elevation and a rear elevation of the floating type launching truss 2 are formed by sequentially connecting between the left 2 launching legs 20 and between the right 2 launching legs 20 through a plurality of V-shaped diagonal braces from top to bottom. Each X-shaped inclined strut refers to two inclined struts which are obliquely crossed with the lower water leg 20 and form an angle of 45-60 degrees on the ground, the two inclined struts are mutually crossed to form an X shape, each V-shaped inclined strut refers to two inclined struts which are obliquely crossed with the lower water leg 20 and form an angle of 45-60 degrees on the ground, and the two inclined struts are connected end to form a V shape.
Wherein, floating launching truss 2 be provided with two purposes: the utility model provides a, in the course of launching in transportation, installation jacket platform etc. and building, shipment, towing, sliding, owing to install in jacket main part 1 as independent individual floating launching truss 2 is whole, floating launching truss atress is comparatively independent, and is less to jacket main part 1's influence, has not only strengthened the stability of jacket main part 1 under operating mode such as transportation, installation, has still optimized the overall structure of jacket platform. Secondly, because the number of layers of the horizontal support frames 10 in the jacket main body 1 is small and the distance between the horizontal support frames 10 is large, especially the horizontal support frames 10 at the lower part of the jacket main body 1 are often sparse, for example, the distance between the first horizontal support frame 10 at the bottommost part and the second horizontal support frame 10 can be up to 60 meters generally, if there is no floating type launching truss 2, the riser 3 passes through the jacket main body 1, especially the lower part of the jacket main body 1, the riser 3 is easy to deform due to lack of support, the floating type launching truss 2 replaces the horizontal support frame 10 to provide support for the riser 3, the riser 3 is protected, therefore, the number of the horizontal support frames 10 can be further reduced, the mass of the jacket main body 1 is reduced, and the overall structure of the jacket platform is optimized.
Referring to fig. 7 and 9, the horizontal supports of the two side elevation frames 13 and the horizontal supports of the two front elevation frames 12 are located on the same horizontal plane with the horizontal frame layer 21 to form a polygonal horizontal frame, a plurality of inclined supports are arranged on the polygonal horizontal frame to form the horizontal support frame 10, and the riser pipe 3 sequentially passes through the guide holes 22 of the horizontal frame layer 21 of the plurality of horizontal support frames 10 from top to bottom. Specifically, after the jacket body 1 is lowered to the seabed, the riser pipe 3 is driven in before the production operation inside the jacket body 1, and the riser pipe 3 is effectively protected mainly by the floating type launching truss 2.
Referring to fig. 8 and 9, in order to adapt to the landform and the landform of a complex seabed and save a large amount of time and cost for seabed pretreatment, four corners of the bottom of the jacket main body 1 are provided with four adjustable anti-sinking plates 5, each adjustable anti-sinking plate 5 comprises a plurality of connection short sections and anti-sinking plates, adjacent connection short sections are in adjustable connection for relative displacement, and the anti-sinking plates are arranged at the bottom of the jacket main body 1 through the connection short sections.
Furthermore, adjacent connecting short sections are assembled in a plug-in type or a clamping type.
It is worth mentioning that the adjustable anti-sinking plate 5 has the following advantages: firstly, because adjustable anti-sink plate 5 can realize height-adjustable, before the ultra-deep water jacket platform is towed out of the sea, the submarine topography and geomorphology exploration of the sea bed surface is firstly completed, the height determination of the connection short section of adjustable anti-sink plate 5 is completed according to the submarine topography and geomorphology exploration result, the height of each adjustable anti-sink plate 5 is adjusted again, the sea bed surface is not required to be subjected to leveling construction treatment, and the adaptability of the jacket platform to the uneven sea bed surface is increased. Secondly, because adjustable anti-sink plate 5 has increased the seabed area of contact, can guarantee that jacket main part 1 resists certain environmental load and jacket main part 1 dead weight load in the installation, guarantee to have sufficient antidumping and anti-skidding stability in place, guarantee structure safety. Thirdly, because the adjustable anti-sinking plate 5 adopts a block structure design, the assembly difficulty of the jacket platform is reduced.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. An ultra-deep water jacket platform is characterized by comprising a jacket main body (1), a floating type launching truss (2) and a water-resisting conduit (3),
the jacket main body (1) comprises a plurality of main legs (11), at least 1 positive vertical face frame (12) and at least 1 side vertical face frame (13), the projections of the horizontal sections of the plurality of main legs (11) are sequentially connected end to form a polygon, the bottom of each main leg (11) is provided with a group of skirt pile sleeves (4), and the adjacent main legs (11) are sequentially and alternately connected through the positive vertical face frames (12) and the side vertical face frames (13) to form the jacket main body (1);
a plurality of horizontal frame layers (21) are arranged on the floating type launching truss (2) at intervals, a guide hole (22) is formed in each horizontal frame layer (21), and the floating type launching truss (2) is arranged in the jacket main body (1) along the side vertical face frame (13);
the riser pipe (3) sequentially penetrates through the guide holes (22) of the plurality of horizontal frame layers (21) of the floating type launching truss (2) from top to bottom.
2. The ultra-deep water jacket platform of claim 1,
a plurality of adjustable anti-sinking plates (5) are arranged at a plurality of corners of the bottom of the jacket main body (1), each adjustable anti-sinking plate (5) comprises a plurality of connecting short sections and anti-sinking plates, the adjacent connecting short sections are in adjustable relative displacement connection, and the anti-sinking plates are arranged at the bottom of the jacket main body (1) through the connecting short sections.
3. The ultra-deep water jacket platform of claim 2,
and the adjacent connecting short sections are assembled in a plug-in type or a clamping type.
4. The ultra-deep water jacket platform of claim 1,
the jacket main body (1) comprises 4 main legs (11), 2 front elevation frames (12) and 2 side elevation frames (13), the projections of the horizontal sections of the 4 main legs (11) are sequentially connected end to form a quadrangle,
one of the front vertical face frames (12) is arranged between the front 2 main legs (11) to form the front of the jacket main body (1), the other front vertical face frame (12) is arranged between the rear 2 main legs (11) to form the back of the jacket main body (1), and the 2 side vertical face frames (13) are respectively arranged between the front main legs (11) and the rear main legs (11) to form two side faces of the jacket main body (1).
5. The ultra-deep water jacket platform of claim 1,
the floating launching truss (2) also comprises 4 launching legs (20), the projections of the horizontal sections of the 4 launching legs (20) are sequentially connected end to form a rectangle,
the front 2 launching legs (20) and the rear 2 launching legs (20) of the floating launching truss (2) are sequentially connected through a plurality of X-shaped inclined struts from top to bottom to form a front vertical face and a rear vertical face of the floating launching truss (2), and the left 2 launching legs (20) and the right 2 launching legs (20) are sequentially connected through a plurality of V-shaped inclined struts from top to bottom to form a front vertical face and a rear vertical face of the floating launching truss (2).
6. The ultra-deep water jacket platform of claim 1,
the side elevation frame (13) is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom, and the main body part in the middle of and below the front elevation frame (12) is provided with a plurality of X-shaped inclined struts and a plurality of transverse supports from top to bottom.
7. An ultra-deep water jacket platform according to claim 6, wherein a plurality of horizontal support frames (10) are intermittently provided laterally inside the jacket body (1),
the horizontal support frame (10) comprises the lateral supports of the two side elevation frames (13), the lateral supports of the two front elevation frames (12) and the horizontal frame layer (21) of the floating type launching truss (2),
the transverse supports of the two side vertical face frames (13), the transverse supports of the two front vertical face frames (12) and the horizontal frame layer (21) of the floating type lower water truss (2) are positioned on the same horizontal plane to form a polygonal horizontal frame, a plurality of inclined supports are arranged on the polygonal horizontal frame to form the horizontal support frame (10),
the riser pipe (3) sequentially penetrates through the guide holes (22) of the horizontal frame layers (21) of the horizontal support frames (10) from top to bottom.
8. The ultra-deep water jacket platform of claim 1,
the auxiliary leg structure is characterized in that 2 auxiliary legs (110) are additionally arranged on a front vertical face frame (12) between two main legs (11) of each front vertical face frame (12), an X-shaped inclined strut is arranged between each two auxiliary legs (110), a diagonal inclined strut is arranged between each auxiliary leg (110) and the main leg (11) positioned on the side edge, two transverse supports are respectively arranged at the upper end and the lower end of an area of the auxiliary leg (110) on the upper portion of the jacket main body (1), and the bottom end portions of the two auxiliary legs (110) of each front vertical face frame (12) are respectively connected with the top end portion of the adjacent X-shaped inclined strut through the two diagonal inclined struts to form a pentagonal frame in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010228187.6A CN111395293A (en) | 2020-03-27 | 2020-03-27 | Ultra-deep water jacket platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010228187.6A CN111395293A (en) | 2020-03-27 | 2020-03-27 | Ultra-deep water jacket platform |
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| CN111395293A true CN111395293A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010228187.6A Pending CN111395293A (en) | 2020-03-27 | 2020-03-27 | Ultra-deep water jacket platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554160A (en) * | 2020-09-21 | 2021-03-26 | 海洋石油工程股份有限公司 | Method for adapting anti-sinking plate and jacket to water depth change and seabed unevenness |
| CN114348193A (en) * | 2022-01-13 | 2022-04-15 | 东北石油大学 | Self-generating deep sea movable ocean platform system and construction method thereof |
| CN115075210A (en) * | 2022-06-20 | 2022-09-20 | 海洋石油工程股份有限公司 | Lifting beam structure of jacket |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554160A (en) * | 2020-09-21 | 2021-03-26 | 海洋石油工程股份有限公司 | Method for adapting anti-sinking plate and jacket to water depth change and seabed unevenness |
| CN114348193A (en) * | 2022-01-13 | 2022-04-15 | 东北石油大学 | Self-generating deep sea movable ocean platform system and construction method thereof |
| CN114348193B (en) * | 2022-01-13 | 2024-04-05 | 东北石油大学 | Self-generating deep-sea movable ocean platform system and construction method thereof |
| CN115075210A (en) * | 2022-06-20 | 2022-09-20 | 海洋石油工程股份有限公司 | Lifting beam structure of jacket |
| CN115075210B (en) * | 2022-06-20 | 2024-03-22 | 海洋石油工程股份有限公司 | Lifting beam structure of jacket |
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Application publication date: 20200710 |