CN114457773A - Novel jacket platform suitable for offshore oil and gas exploitation - Google Patents
Novel jacket platform suitable for offshore oil and gas exploitation Download PDFInfo
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- CN114457773A CN114457773A CN202210071664.1A CN202210071664A CN114457773A CN 114457773 A CN114457773 A CN 114457773A CN 202210071664 A CN202210071664 A CN 202210071664A CN 114457773 A CN114457773 A CN 114457773A
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- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
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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
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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
- E02B17/0017—Means for protecting offshore constructions
- E02B17/003—Fenders
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- 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
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Abstract
The invention discloses a novel jacket platform suitable for offshore oil and gas exploitation, which comprises an underframe (1) and a platform deck (2), wherein a support frame (3) is arranged between the underframe (1) and the platform deck (2); the flow control device is characterized in that a plurality of sets of flow control assemblies are arranged in the support frame (3), each flow control assembly comprises a flow control base (4) fixed in the support frame (3), a plurality of mounting grooves (41) are formed in each flow control base (4), the middle of each mounting groove (41) is rotatably provided with a flow control plate (5), and the movable end of each flow control plate (5) extends to the outer side of each mounting groove (41). The invention has the advantage of reducing the influence of wind, wave and current on the jacket platform.
Description
Technical Field
The invention relates to the technical field of offshore oil and gas resource development, in particular to a novel jacket platform suitable for offshore oil and gas exploitation.
Background
The ocean platform is used as a base for ocean resource production activities and is key equipment for ocean resource development. Up to now, there are thousands of platforms in production that go through the process of fixing simple structures from the early shallow water wood to the complex forms of today's deep water steel movement. The jacket platform is the most widely used platform form in the world, accounts for more than 90% of the total number, and is also the most used ocean platform in China. The shallow water floating type soil treatment device has the characteristics of high safety and economy, convenience in design and installation, suitability for different soil qualities, strong practicability in shallow water areas and the like.
The jacket platform often needs to face a severe external working environment in offshore oil and gas exploitation, wherein the influence of wind, wave and flow on the jacket platform is most significant, for example, due to extreme marine environments such as strong flow and billow induced by strong wind at sea, which will bring a severe test on the safety and life of the offshore jacket platform, once a safety accident occurs, not only a huge economic loss is caused, but also a series of significant problems such as crude oil leakage are caused, and in an extremely severe environmental load, the influence of wave and flow load on the safety and stability of the jacket platform is dominant.
In the patent: in CN201320842654.X, a jacket platform structure of an offshore wind turbine is disclosed, which is characterized in that the jacket platform structure comprises a jacket, a platform is arranged on the upper portion of the jacket, a transition section is arranged on the platform, an inclined strut is connected between the transition section and the platform, the transition section and the inclined strut are connected through a first casting node, the jacket comprises a plurality of guide pipes, an inclined pipe support is connected between adjacent guide pipes, and the guide pipes and the inclined pipe support are connected through a second casting node. According to the invention, the transition section is connected with the inclined strut by the first casting node, and the guide pipe is connected with the inclined pipe support by the second casting node, so that the structure of the key node of the jacket is convenient to machine and form, the welding is convenient, the welding quality can be effectively ensured, the structure of the jacket platform is more stable and safe, and the service life is long.
In patent CN200620168521.9, a "return" shaped impact-resistant large-area jacket offshore production platform is disclosed, which is composed of a deck 1, an inner jacket 2, an outer jacket 3, a connecting rod 4 and a brace rod 5, wherein the inner and outer jacket 2, 3 are arranged below the deck 1 in a "return" shape; 3 groups of support rods 5 are uniformly arranged in the longitudinal direction along the height of the outer jacket, and the horizontal layer surface formed by each group of support rods 5 is parallel to the deck 1; the 4 inner jacket racks 3 are mutually connected and fixed and are respectively connected with the 4 outer jacket racks 3 in a diagonal manner; connecting rods 4 are obliquely and additionally arranged on the lower pile legs of the 4 inner jacket racks 2 and the lower pile legs of the 4 outer jacket racks 3, and the middle points of the inner jacket racks 2 and the support rods 5 are welded and fixed. The offshore oil production platform is reasonable in design, novel in structure, large in using area, high in stability and impact resistance, suitable for resisting and withstanding the impact of waves, ocean currents and sea ice in an offshore environment and guaranteeing the safety of offshore oil production and personnel, but cannot stabilize the offshore oil production platform by means of natural force.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a novel jacket platform suitable for offshore oil and gas exploitation, and the platform can effectively reduce the influence of environmental loads such as wind, wave, flow and the like on the jacket platform.
The purpose of the invention is realized by the following technical scheme:
a novel jacket platform suitable for offshore oil and gas production, comprising:
the device comprises a bottom frame and a platform deck, wherein a support frame is arranged between the bottom frame and the platform deck; the support frame is internally provided with a plurality of groups of flow control assemblies, each flow control assembly comprises a flow control base fixed in the support frame, a plurality of mounting grooves are formed in the flow control base, the middle parts of the mounting grooves are rotatably provided with flow control plates, and the movable ends of the flow control plates extend to the outer sides of the mounting grooves.
Furthermore, the flow control plate is of an integrally formed structure and comprises a fixed part and a movable part, one end of the fixed part is fixedly connected with the movable part, the fixed part is provided with a hinged hole in a penetrating manner, the fixed part and the movable part are provided with through grooves, the cross section of the movable part is triangular, the top end of the movable part is fixed with the fixed part, and the bottom side of the movable part is provided with an inward concave arc-shaped groove.
Further, a bearing is embedded in the hinge hole.
Furthermore, the support frame comprises three guide legs arranged in a triangular array, the guide legs are fixed on the underframe, the platform deck is fixed at the other ends of the guide legs, a plurality of cross braces are fixed among the three guide legs, and the cross braces on the same layer form a triangular structure; a plurality of inclined struts are fixed among the three guide legs; the flow control base is fixed between two of the guide legs.
Furthermore, a plurality of crossbeams which are arranged in a criss-cross mode are further arranged on the bottom side of the platform deck, and the crossbeams are fixed between the guide legs and the platform deck.
Furthermore, the cross section of the guide leg is of a diamond structure, the joint of the guide leg is of an arc shape, the guide leg is internally of a hollow structure, and a hollow cylinder is fixed on the guide leg.
Furthermore, the underframe comprises three supporting legs, the guide legs are fixed on the supporting legs, the three supporting legs are fixedly connected through fixing rods, a plurality of supports which are distributed in a fan shape are fixed on the outer sides of the supporting legs, and a guide pile cylinder is fixed on the outer sides of the supports.
Furthermore, the middle parts of the three guide legs are vertically provided with a stand pipe which is used for communicating the platform deck and the seabed oil and gas reservoir.
The invention has the beneficial effects that:
the novel jacket platform suitable for offshore oil and gas exploitation, provided by the invention, has the advantages that the kinetic energy conversion can be realized ingeniously by means of natural force through the flow control plate structure, the resources are saved, the impact of wave flow on a jacket is reduced by utilizing the quasi-diamond-shaped guide leg structure, the environmental load borne by the jacket is reduced, the stability of the platform is improved, the steel consumption of the jacket structure is less, the structure is simple, the installation is convenient, the economy is strong, and the self-adaptive capacity to the direction of the environmental load is stronger; by using the jacket platform structure, the development of environmental protection, high efficiency, safety and economy of offshore oil and gas can be guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a schematic view of the installation of the flow control base and flow control plate;
FIG. 4 is a schematic diagram of the structure of a flow control plate;
fig. 5 is a cross-sectional view of the guide leg.
In the figure, 1-underframe, 11-supporting legs, 12-fixed rods, 13-supports, 14-pile guide cylinders, 2-platform deck, 21-cross beams, 3-supporting frames, 31-leg guides, 311-hollow cylinders, 32-cross supports, 33-inclined supports, 4-flow control bases, 41-mounting grooves, 42-clamping grooves, 5-flow control plates, 51-fixed parts, 52-movable parts, 521-arc grooves, 53-hinge holes, 54-through grooves, 6-bearings and 7-solder balls.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, as shown in fig. 1 to 5, a novel jacket platform suitable for offshore oil and gas exploitation includes an underframe 1 and a platform deck 2, wherein a support frame 3 is disposed between the underframe 1 and the platform deck 2; the flow control device is characterized in that a plurality of groups of flow control assemblies are arranged in the support frame 3, each flow control assembly comprises a flow control base 4 fixed in the support frame 3, a plurality of mounting grooves 41 are formed in the flow control bases 4, flow control plates 5 are rotatably arranged in the middle of the mounting grooves 41, and the movable ends of the flow control plates 5 extend to the outer sides of the mounting grooves 41.
In this embodiment, the mounting groove 41 is formed by downwardly forming two symmetrical triangular grooves on two sides of a rectangular groove, the flow control plate 5 is hinged to the middle of the rectangular groove, and the flow control plate 5 can be turned over between the two triangular grooves.
The tail part of the flow control plate 5 is of an upturned structure, and due to the particularity of the upturned structure of the tail part, when ocean current positively impacts the flow control plate 5, the flow velocity above the flow control plate 5 is reduced, the pressure is increased, and the flow below the flow control plate 5 is normal, thereby causing the pressure difference between the upper part and the lower part of the flow control plate 5 to generate downward pressure, enhancing the stability of the jacket platform, when the direction of the ocean current is changed, namely, when the ocean current reversely impacts the current control plate 5, because the tail structure of the current control plate 5 has an inclined plane, so that when the transverse acting force of the ocean current acts on the tail part of the current control plate 5, an upward component force is generated, thereby pushing the flow control plate 5 to turn over with the hole at the front end plate as the center of circle, changing the direction of the incident flow of the flow control plate 5, after the jacket platform is turned over to the mounting groove 41 of the flow control base 4, downward pressure can be continuously applied to the jacket platform, and the stability of the platform is improved.
The embodiment is further configured as follows: the flow control plate 5 is of an integrally formed structure, the flow control plate 5 comprises a fixed portion 51 and a movable portion 52, one end of the fixed portion 51 is fixedly connected with the movable portion 52, the fixed portion 51 is provided with a hinge hole 53 in a penetrating manner, the fixed portion 51 and the movable portion 52 are provided with through grooves 54 in the inner portions, the cross section of the movable portion 52 is triangular, the top end of the movable portion 52 is fixed to the fixed portion 51, and the bottom side of the movable portion 52 is provided with an inward-concave arc-shaped groove 521.
In the present embodiment, the weight is reduced by the through groove 54 and the arc-shaped groove 521.
The embodiment is further configured as follows: the hinge hole 53 is embedded with a bearing 6.
In this embodiment, the flow control plate 5 is mounted on the flow control base 4 by the nail rod passing through the bearing 6 and the hinge hole 53, and the flow control plate 4 can be turned left and right around the hinge hole 53.
The embodiment is further configured as follows: the supporting frame 3 comprises three guide legs 31 arranged in a triangular array, the guide legs 31 are fixed on the underframe 1, the platform deck 2 is fixed at the other ends of the guide legs 31, a plurality of cross braces 32 are fixed among the three guide legs 31, and the triangular structures on the same layer form a triangular structure; a plurality of inclined struts 33 are further fixed among the three guide legs 31; the flow control base 4 is fixed between two of the guide legs 31.
In this embodiment, the triangle structure sets up to 6 layers, and the cavity that will lead to form between the leg 31 through 6 layers of stull 32 divide into from last 7 layers of inner chambers extremely down, and the space of its first two-layer inner chamber is greater than the space on other layers, 1 st stull 32 and lead and weld through the mode of ball bonding between the leg 31 to form solder ball 7 in the junction, the stull on all the other layers all adopts current welding mode to connect fixedly.
The number of the cross braces of the first layer is three, the number of the cross braces 32 of the other layers is two, the flow control base 4 is fixed on the cross braces 32 from the 2 nd layer to the 6 th layer, the flow control base 4 is of a trapezoidal structure, a clamping groove 42 is formed in the inclined plane of the flow control base 4, the clamping groove 42 is matched with the cross braces 32, and the flow control base 4 and the cross braces 32 on the same layer form a triangular structure.
The inclined struts 33 are arranged in the cavities from the layer 3 to the layer 6, two inclined struts 33 are arranged in each layer, the lengths of the inclined struts 33 on the upper two layers are greater than those of the inclined struts 33 on the other layers, one end of the inclined strut 33 in the cavity in the layer 1 is fixed at the top end of one of the guide legs 31 through a solder ball 7, one end of the inclined strut 33 in the cavity in the layer 2 is fixed at the vertex formed by the transverse strut 32 on the layer 2 through the solder ball 7, and the other ends of the inclined struts 33 in the cavities in the layers 1 and 2 are respectively fixed on the solder ball 7 at the connection position of the transverse strut 32 on the layer 1; one end of the diagonal 33 of the inner cavity of the layer 3 is fixed at the joint of the next layer of the transverse support 32, and the other end is respectively fixed on the transverse support 32 of the previous layer.
The embodiment is further configured as follows: the bottom side of the platform deck 2 is also provided with a plurality of criss-cross beams 21, and the beams 21 are fixed between the guide legs 31 and the platform deck 2.
The embodiment is further configured as follows: the cross section of the guide leg 31 is of a diamond structure, the joint of the guide leg 31 is of an arc shape, the inner part of the guide leg 31 is of a hollow structure, and a hollow cylinder 311 is fixed on the guide leg 31.
In the embodiment, the guide legs 31 are arranged to be of a rhomboid structure, so that the shell has the functions of shunting and reducing resistance, and the wave and flow loads borne by the guide legs can be greatly reduced; the hollow cylinder 311 is fixed to the guide leg 31 by welding, and the hollow cylinder 311 increases the stability of the guide leg 31.
The embodiment is further configured as follows: the base frame 1 comprises three supporting legs 11, the guide legs 31 are fixed on the supporting legs 11, the three supporting legs 11 are fixedly connected through fixing rods 12, a plurality of supports 13 distributed in a fan shape are fixed on the outer sides of the supporting legs 11, and pile guide cylinders 14 are fixed on the outer sides of the supports 13.
When the installation and fixation are carried out, firstly, a pile driver is adopted to drive the steel pipe into the rock stratum with the specified depth from the pile guide barrel 14, and then concrete and cement paste are injected into the annular part for filling so as to effectively transmit the load of the jacket platform into the foundation. Since the pile guide barrel 14 is arranged in a plurality of ways, it can bear loads from a plurality of different axial, horizontal and torsional modes, and has a certain shock resistance, the pile driver adopts the existing product, and the structure thereof is not described in detail herein.
The embodiment is further configured as follows: the middle parts of the three guide legs 31 are vertically provided with risers which are used for communicating the platform deck 2 with the seabed oil and gas reservoir.
Example two, the test parameters for the jacket platform were as follows:
target sea area environmental conditions: working water depth 30 m, main wind direction: NNE, respectively; the main wave direction: SSW, NNE; main flow direction: NNE, SSW. The main extreme value of the wind wave flow is shown in tables 1-3.
| Recurrence period (year) | 1 | 100 |
| 3s | 35.2 | 60.2 |
| 1min | 26.4 | 45.1 |
| 1h | 22.0 | 37.6 |
TABLE 1 Main extreme of wind (m/s).
| Recurrence period (year) | 1 | 100 |
| Hs(m) | 3.8 | 8.6 |
| Hmax(m) | 6.4 | 14.3 |
| Tz(s) | 6.5 | 8.6 |
Table 2 wave principal extremum.
| Recurrence period (year) | 1 | 100 |
| Superficial velocity of flow | 112 | 190 |
| Flow velocity of the middle layer | 88 | 144 |
| Bottom layer flow velocity | 63 | 111 |
TABLE 3 Main ocean current extreme (cm/s).
This novel jacket overall height 46m, 1 thickness 8mm on the platform deck, the size is 13m x 13m, and 2 below 21m departments of platform deck are equipped with 5 layers downwards and lay an interval for 5 m's accuse flow board 5, totally 15 accuse flow board 5, and the jacket bottom is by the guide pile section of thick bamboo 14 that adopts the skirt pile to distribute for lower stake so that fix it on the seabed. The length of the flow control plate 5 is 2m, the width is 1m, 100 years are taken as the design years, and under severe working conditions, the environmental load borne by the platform is shown in table 4:
table 4 environmental loads to which the new jacket platform is subjected.
Through simulation calculation, each flow control plate 5 generates 2154.5Pa downward pressure in the maximum ocean current flow rate, and the whole structure of the flow control plate 5 generates 3.23 multiplied by 104Pa downward pressure, so that the stability of the platform is enhanced.
Under the limit wave height, the maximum deformation of the guide leg 31 is reduced by 75.16% compared with the existing cylindrical guide leg with the same specification, and the maximum stress is reduced by 83.99%; in the maximum current flow velocity, the maximum deformation amount of the diamond-like guide leg 31 is reduced by 77.75 percent compared with the existing cylindrical guide leg with the same specification, and the maximum stress is reduced by 70.09 percent.
Under the worst working condition, namely the same-direction impact of wind wave flow, the total deformation of the existing jacket platform with 3 legs of the same specification is 0.11052m, the effective stress is 4.6392 multiplied by 108Pa, the deformation of the novel jacket platform is 0.031826m, the equivalent stress is 1.2318 multiplied by 108Pa, and in comparison, the percentage of reduction of the total deformation is 71.2 percent, and the percentage of reduction of the equivalent stress is 73.45 percent. In other conditions, the two are compared in table 5.
| Working conditions | Wind direction | Wave direction | Flow direction of | Amount of deformation (m) | Equivalent stress (Pa) |
| Working condition one | NNE | NNE | SSW | 0.03114 | 1.24×108 |
| Working condition two | NNE | SSW | NNE | 0.030292 | 1.436×108 |
| Three working conditions | NNE | SSW | SSW | 0.022513 | 1.4425×108 |
Table 5 is a table comparing deformation and equivalent stress of the jacket platform and the jacket platform with 3 legs in the same specification.
When the jacket platform is impacted by extreme wave height changing along with time, the deformation amount and the equivalent stress of the novel jacket platform provided by the invention are respectively reduced by 41 percent and 65.83 percent compared with the existing jacket platform with 3 legs of the same specification. The novel jacket platform provided by the invention is subjected to fatigue analysis by combining with the static and dynamic analysis results, and vulnerable nodes are subjected to ball bonding according to the analysis results to form solder balls 7, so that the stability of the platform is improved, and the simulation result shows that the minimum safety factor of the structure is 2.1402, and meets 2.0 required by the classification society (CCS) standard.
The invention skillfully utilizes natural force, utilizes the flow control plate structure to realize kinetic energy conversion, saves resources, adopts the quasi-rhombic leg guide structure, reduces the impact of wave flow on the jacket, reduces the environmental load borne by the jacket, and has the advantages of less steel consumption, simple structure, convenient installation, strong economy and stronger self-adaptive capacity to the direction of the environmental load; the novel jacket platform structure can ensure the development of offshore oil and gas in green, environment-friendly, efficient, safe and economic manner.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention are usually placed in when used, or orientations or positional relationships that are usually understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or the elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Claims (8)
1. A novel jacket platform suitable for offshore oil and gas exploitation, comprising:
the device comprises an underframe (1) and a platform deck (2), wherein a support frame (3) is arranged between the underframe (1) and the platform deck (2); be provided with a plurality of groups of accuse and flow the subassembly in support frame (3), the accuse is flowed the subassembly and is flowed base (4) including the accuse that is fixed in support frame (3), a plurality of mounting grooves (41) have been seted up on accuse flow base (4), mounting groove (41) middle part is rotated and is provided with accuse and flows board (5), the expansion end that accuse flowed board (5) extends to the outside of mounting groove (41).
2. The novel jacket platform for offshore oil and gas production according to claim 1, wherein: the flow control plate (5) is of an integrally formed structure, the flow control plate (5) comprises a fixed portion (51) and a movable portion (52), one end of the fixed portion (51) is fixedly connected with the movable portion (52), the fixed portion (51) penetrates through the hinge hole (53), a through groove (54) is formed in the fixed portion (51) and the movable portion (52), the cross section of the movable portion (52) is triangular, the top end of the movable portion (52) is fixed to the fixed portion (51), and the bottom side of the movable portion (52) is provided with an inward-concave arc-shaped groove (521).
3. The new jacket platform adapted for offshore hydrocarbon production according to claim 2, wherein: and a bearing (6) is embedded in the hinge hole (53).
4. The novel jacket platform for offshore oil and gas production according to claim 1, wherein: the supporting frame (3) comprises three guide legs (31) arranged in a triangular array, the guide legs (31) are fixed on the base frame (1), the platform deck (2) is fixed at the other end of the guide legs (31), a plurality of cross braces (32) are fixed among the three guide legs (31), and the cross braces (32) on the same layer form a triangular structure; a plurality of inclined struts (33) are fixed among the three guide legs (31); the flow control base (4) is fixed between two guide legs (31).
5. The novel jacket platform for offshore oil and gas production according to claim 4, wherein: the bottom side of the platform deck (2) is also provided with a plurality of crossbeams (21) which are arranged in a criss-cross mode, and the crossbeams (21) are fixed between the guide legs (31) and the platform deck (2).
6. The novel jacket platform for offshore oil and gas production according to claim 4, wherein: the cross section of the guide leg (31) is of a diamond structure, the joint of the guide leg (31) is of an arc shape, the interior of the guide leg (31) is of a hollow structure, and a hollow cylinder (311) is fixed on the guide leg (31).
7. The novel jacket platform for offshore oil and gas production according to claim 4, wherein: the chassis (1) comprises three supporting legs (11), the guide legs (31) are fixed on the supporting legs (11) and are three, the supporting legs (11) are fixedly connected through fixing rods (12), a plurality of supports (13) distributed in a fan shape are fixed on the outer sides of the supporting legs (11), and guide pile cylinders (14) are fixed on the outer sides of the supports (13).
8. The novel jacket platform for offshore oil and gas production according to claim 4, wherein: and the middle parts of the three guide legs (31) are vertically provided with stand pipes which are used for communicating the platform deck (2) with the seabed oil and gas reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210071664.1A CN114457773B (en) | 2022-01-21 | 2022-01-21 | Novel jacket platform suitable for offshore oil and gas exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210071664.1A CN114457773B (en) | 2022-01-21 | 2022-01-21 | Novel jacket platform suitable for offshore oil and gas exploitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114457773A true CN114457773A (en) | 2022-05-10 |
| CN114457773B CN114457773B (en) | 2023-11-14 |
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