CN114457773B - 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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- CN114457773B CN114457773B CN202210071664.1A CN202210071664A CN114457773B CN 114457773 B CN114457773 B CN 114457773B CN 202210071664 A CN202210071664 A CN 202210071664A CN 114457773 B CN114457773 B CN 114457773B
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- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 14
- 230000007613 environmental effect Effects 0.000 description 10
- 238000003466 welding Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
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- 238000004088 simulation Methods 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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 supporting frame (3) is arranged between the underframe (1) and the platform deck (2); be provided with a plurality of groups in support frame (3) and control and flow the subassembly, accuse flows the subassembly including being fixed in accuse flow base (4) in support frame (3), accuse flows and has offered a plurality of mounting grooves (41) on base (4), mounting groove (41) middle part rotation is provided with accuse flow board (5), accuse flow board (5)'s expansion end extends to the outside of 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
Ocean platforms are key equipment for ocean resource development as a base for ocean resource production activities. Up to now, there are thousands of seatings on the ocean platform in production, which go through the process from the initial shallow water wooden fixed simple structure to the current deep water steel moving complex form. The jacket platform is the most widely used platform form in the world, and accounts for more than 90% of the total number, and is also the most used ocean platform in China. The device has the characteristics of high safety and economy, convenient design and installation, suitability for different soil textures, strong practicability in shallow water areas and the like.
Jacket platforms often need to face severe external working environments in marine oil and gas exploitation, wherein the influence of wind, waves and currents on the jacket platform is most remarkable, for example, due to the extreme marine environments such as strong currents and billows induced by offshore strong winds, the severe problems are brought to the safety and service life of the offshore jacket platform, once safety accidents occur, huge economic losses are caused, a series of serious problems such as crude oil leakage are caused, and in extremely severe environmental loads, the influence of the waves and currents on the safety and stability of the jacket platform is dominant.
In the patent: in CN201320842654.X, disclosed is a jacket platform structure of marine fan, its characterized in that jacket platform structure include the jacket, jacket upper portion is equipped with the platform, is equipped with the changeover portion on the platform, is connected with the bracing between changeover portion and the platform, is connected through first casting node between changeover portion and the bracing, the jacket includes many pipes, is connected with the pipe chute support between the adjacent pipe, pipe and pipe chute support between be connected through the second casting node. The transition section is connected with the inclined strut by adopting the first casting node, and the guide pipe is connected with the inclined strut by adopting the second casting node, so that the structure of the key node of the jacket is convenient to process and form, the welding is convenient, the welding quality can be effectively ensured, the jacket platform structure is more stable and safe, and the service life is long, but the jacket platform structure cannot be stable by means of natural force.
In a patent CN200620168521.9, a large-area jacket marine oil production platform with a shape like a Chinese character 'Hui' is disclosed, which consists of a deck 1, an inner jacket 2, an outer jacket 3, a connecting rod 4 and a stay bar 5, wherein the inner jacket 2 and the outer jacket 3 are arranged below the deck 1 in a shape like a Chinese character 'Hui'; 3 groups of supporting rods 5 are uniformly arranged along the height longitudinal direction of the outer catheter frame, and the horizontal layer formed by each group of supporting rods 5 is parallel to the deck 1; the 4 inner jackets 3 are fixedly connected with each other and are respectively connected with the 4 outer jackets 3 in a diagonal manner; connecting rods 4 are obliquely additionally arranged on the lower pile legs of the 4 inner jackets 2 and the lower pile legs of the 4 outer jackets 3, and the middle points of the inner jackets 2 and the supporting rods 5 are welded and fixed. The ocean oil extraction platform has reasonable design, novel structure, large use area, high stability and impact resistance, is suitable for resisting the impact of waves, ocean currents and sea ice in an ocean environment, ensures the safety of offshore oil extraction production and personnel, but cannot stabilize the ocean oil extraction 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, which can effectively reduce the influence of environmental loads such as wind, waves, currents and the like on the jacket platform.
The aim of the invention is realized by the following technical scheme:
a novel jacket platform suitable for offshore oil and gas production, comprising:
the support frame is arranged between the underframe and the platform deck; the support frame is internally provided with a plurality of groups of flow control components, the flow control components comprise a flow control base fixed in the support frame, a plurality of mounting grooves are formed in the flow control base, a flow control plate is rotationally arranged in the middle of each mounting groove, and the movable end of the flow control plate extends to the outer side of each mounting groove.
Further, the flow control plate is of an integrated structure, the flow control plate 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 penetrated and provided with a hinge hole, through grooves are formed in the fixed part and the movable part, 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 groove.
Further, the hinge hole is embedded with a bearing.
Further, 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 between the three guide legs, and the cross braces of the same layer form a triangular structure; a plurality of diagonal braces are also fixed among the three guide legs; the flow control base is fixed between two guide legs.
Furthermore, the bottom side of the platform deck is also provided with a plurality of cross beams which are arranged in a crisscross manner, and the cross beams are fixed between the guide legs and the platform deck.
Further, the cross section of the guide leg is of a diamond structure, the joint of the guide leg is arc-shaped, the inside of the guide leg is of a hollow structure, and the guide leg is fixed with a hollow cylinder.
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 in fan-shaped distribution are fixed on the outer sides of the supporting legs, and pile guide cylinders are fixed on the outer sides of the supports.
Further, the middle parts of the three guide legs are vertically provided with risers, and the risers are used for communicating the deck of the platform with the submarine hydrocarbon reservoir.
The invention has the beneficial effects that:
the novel jacket platform suitable for offshore oil and gas exploitation provided by the invention can skillfully realize kinetic energy conversion by means of natural force through the flow control plate structure, saves resources, reduces impact of wave current on the jacket by utilizing the diamond-like guide leg structure, reduces environmental load born by the jacket, increases the stability of the platform, has the advantages of less steel consumption of the jacket structure, simple structure, convenience in installation, strong economy and stronger self-adaption capability to the direction of the environmental load; the jacket platform structure can ensure the development of offshore oil and gas with environmental protection, high efficiency, safety and economy.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a schematic diagram illustrating the installation of a flow control base and a flow control plate;
FIG. 4 is a schematic structural view of a flow control plate;
fig. 5 is a cross-sectional view of the guide leg.
In the figure, 1-underframe, 11-supporting leg, 12-fixed rod, 13-bracket, 14-pile guide cylinder, 2-platform deck, 21-crossbeam, 3-supporting frame, 31-guiding leg, 311-hollow cylinder, 32-stull, 33-diagonal bracing, 4-flow control base, 41-mounting groove, 42-clamping groove, 5-flow control plate, 51-fixed part, 52-movable part, 521-arc groove, 53-hinge hole, 54-through groove, 6-bearing and 7-solder ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the first embodiment, as shown in fig. 1 to 5, a novel jacket platform suitable for offshore oil and gas exploitation comprises a 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 flow subassembly in the support frame 3, accuse flow subassembly is including being fixed in accuse flow base 4 in the support frame 3, a plurality of mounting grooves 41 have been seted up on the accuse flow base 4, the mounting groove 41 middle part rotates and is provided with accuse flow board 5, the expansion end of accuse flow board 5 extends to the outside of mounting groove 41.
In this embodiment, the installation groove 41 is formed by downward forming two symmetrical triangular grooves on two sides in a rectangular groove, the flow control plate 5 is hinged to the middle of the rectangular groove, and the flow control plate 5 can turn between the two triangular grooves.
The tail of the flow control plate 5 is of an upturned structure, and due to the particularity of the upturned structure of the tail of the flow control plate, when the ocean current positively impacts the flow control plate 5, the flow speed above the flow control plate 5 is reduced, the pressure is increased, and the flow below the flow control plate 5 normally flows, so that the flow control plate 5 forms pressure difference up and down, downward pressure is generated, the stability of the jacket platform is enhanced, when the ocean current direction is changed, namely, the ocean current reversely impacts the flow control plate 5, an inclined plane exists at the moment, the transverse acting force of the ocean current acts on the tail of the flow control plate 5 to generate an inclined upward component, so that the flow control plate 5 is pushed to overturn by taking the front plate hole as the circle center, the flow direction of the flow control plate 5 is changed, and after overturning to the installation groove 41 of the flow control base 4, the jacket platform can be continuously given a downward pressure, and the stability of the platform is increased.
The present embodiment is further configured to: the flow control plate 5 is of an integrated structure, the flow control plate 5 comprises a fixed part 51 and a movable part 52, one end of the fixed part 51 is fixedly connected with the movable part 52, the fixed part 51 is provided with a hinge hole 53 in a penetrating mode, through grooves 54 are formed in the fixed part 51 and the movable part 52, the cross section of the movable part 52 is triangular, the top end of the movable part 52 is fixed with the fixed part 51, and an arc groove 521 which is inwards sunken is formed in the bottom side of the movable part 52.
In this embodiment, the weight is reduced by the through groove 54 and the arc groove 521.
The present embodiment is further configured to: 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 5 can be turned left and right along the hinge hole 53.
The present embodiment is further configured to: the support 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 between the three guide legs 31, and the triangular structures of the same layer form a triangular structure; a plurality of diagonal braces 33 are also 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 triangular structure is set to 6 layers, the cavity formed between the guide legs 31 is divided into 7 layers of inner cavities from top to bottom by the 6 layers of cross braces 32, the space of the first two layers of inner cavities is larger than that of the other layers, the 1 st layer of cross braces 32 and the guide legs 31 are welded in a ball welding manner, and the welding balls 7 are formed at the joints, and the cross braces of the other layers are all connected and fixed in an existing welding manner.
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 of the layers 2 to 6, the flow control base 4 is of a trapezoid structure, the inclined surface of the flow control base 4 is provided with a clamping groove 42, the clamping groove 42 is adaptive to the cross braces 32, and the flow control base 4 and the cross braces 32 of the same layer form a triangle structure.
The diagonal braces 33 are arranged in the inner cavities from the 3 rd layer to the 6 th layer, two diagonal braces 33 are arranged in each layer, the lengths of the diagonal braces 33 on the upper two layers are larger than those of the diagonal braces 33 on the other layers, one end of each diagonal brace 33 in the inner cavity on the 1 st layer is fixed on the top end of one guide leg 31 through a solder ball 7, one end of each diagonal brace 33 in the inner cavity on the 2 nd layer is fixed on the vertex formed by the transverse brace 32 on the 2 nd layer through the solder ball 7, and the other ends of the diagonal braces 33 in the inner cavities on the 1 st layer and the 2 nd layer are respectively fixed on the solder balls 7 at the joint of the transverse braces 32 on the 1 st layer; one end of the diagonal brace 33 of the inner cavity of the 3 rd layer is fixed at the joint of the next layer of the cross brace 32, and the other end of the diagonal brace is respectively fixed on the cross brace 32 of the upper layer.
The present embodiment is further configured to: the bottom side of the platform deck 2 is also provided with a plurality of cross beams 21 which are arranged in a criss-cross manner, and the cross beams 21 are fixed between the guide legs 31 and the platform deck 2.
The present embodiment is further configured to: the cross section of the guide leg 31 is in a diamond structure, the joint of the guide leg 31 is arc-shaped, the inside of the guide leg 31 is in a hollow structure, and the guide leg 31 is fixed with a hollow cylinder 311.
In the embodiment, the guide legs 31 are of a diamond-like structure, so that the shell has the functions of shunting and reducing resistance, and wave and current loads borne by the guide legs can be greatly reduced; the hollow cylinder 311 is fixed with the guide leg 31 by welding, and the stability of the guide leg 31 is increased by the hollow cylinder 311.
The present embodiment is further configured to: the underframe 1 comprises three supporting legs 11, 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 which are 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 pile driver is installed and fixed, firstly, a pile driver is adopted to drive the steel pipe into the rock stratum with the specified depth from the pile guide cylinder 14, and then concrete and cement paste are injected into the annular space part for filling, so that the load of the jacket platform is effectively transmitted into the foundation. Because the pile guide 14 is a plurality of arrangements, 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 products, and the structure is not described in detail here.
The present embodiment is further configured to: the middle parts of the three guide legs 31 are vertically provided with risers for communicating the platform deck 2 with the subsea hydrocarbon reservoir.
In the second embodiment, test parameters of the jacket platform are as follows:
target sea area environmental conditions: working water depth 30 m, main wind direction: NNE; the main wave direction: SSW, NNE; and main flow direction: NNE, SSW. The main extreme values of the wave currents are shown in tables 1-3.
| Reproduction period (year) | 1 | 100 |
| 3s | 35.2 | 60.2 |
| 1min | 26.4 | 45.1 |
| 1h | 22.0 | 37.6 |
Table 1 Main poles (m/s) of wind.
| Reproduction period (year) | 1 | 100 |
| H s (m) | 3.8 | 8.6 |
| H max (m) | 6.4 | 14.3 |
| T z (s) | 6.5 | 8.6 |
Table 2 wave dominant extremum.
| Reproduction period (year) | 1 | 100 |
| Surface layerFlow rate | 112 | 190 |
| Flow rate of middle layer | 88 | 144 |
| Flow rate of bottom layer | 63 | 111 |
Table 3 Main ocean current extremum (cm/s).
The novel jacket has the overall height of 46m, the thickness of the platform deck 2 is 8mm, the size is 13m multiplied by 13m, the flow control plates 5 with 5 layers of intervals of 5m are downwards arranged at the position 21m below the platform deck 2, 15 flow control plates 5 are totally arranged at the bottom of the jacket, pile guide barrels 14 distributed by skirt piles are adopted at the bottom of the jacket and used for piling so as to fix the pile guide barrels on a seabed. The length of the flow control plate 5 is 2m, the width is 1m, 100 years is taken as the design year, and under severe working conditions, the environmental load born by the platform is shown in table 4:
table 4 environmental loads experienced by the novel jacket platform.
Through simulation calculation, in the maximum ocean current flow rate, each flow control plate 5 generates 2154.5Pa downward pressure, the whole flow control plate 5 structure generates 3.23 multiplied by 104Pa downward pressure, and the stability of the platform is enhanced.
Under the extreme wave height, compared with the existing cylindrical guide leg with the same specification, the maximum deformation of the guide leg 31 is reduced by 75.16 percent, and the maximum stress is reduced by 83.99 percent; at the maximum ocean current flow rate, the maximum deformation of the diamond-like guide leg 31 is reduced by 77.75% compared with the existing cylindrical guide leg with the same specification, and the maximum stress is reduced by 70.09%.
Under the worst working condition, namely, under the same-direction impact of wind, wave and current, the total deformation of the existing jacket platform with 3 legs with 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 compared with the prior art, the reduction percentage of the total deformation is 71.2%, and the reduction percentage of the equivalent stress is 73.45%. Under other conditions, the comparison of the two is shown in Table 5.
| Working conditions of | Wind direction | Wave direction | Flow direction | Deformation amount (m) | Equivalent stress (Pa) |
| Working condition I | NNE | NNE | SSW | 0.03114 | 1.24×10 8 |
| Working condition II | NNE | SSW | NNE | 0.030292 | 1.436×10 8 |
| Working condition three | NNE | SSW | SSW | 0.022513 | 1.4425×10 8 |
Table 5 shows a comparison table of the deformation amounts and the equivalent stresses of the jacket platform and the jacket platform with 3 legs of the same specification.
When the jacket platform is impacted by the extreme wave height which changes along with time, the deformation quantity of the novel jacket platform is reduced by 41 percent and 65.83 percent respectively compared with the equivalent stress of the existing jacket platform with 3 legs of the same specification. According to the novel jacket platform provided by the invention, fatigue analysis is carried out by combining statics and dynamics analysis results, and ball welding is carried out on vulnerable nodes according to the analysis results to form the solder balls 7, so that the stability of the platform is increased, and the simulation results show that the minimum safety coefficient of the structure is 2.1402, and the requirement of the class-level society (CCS) specification is met by 2.0.
The invention skillfully utilizes the natural force to realize kinetic energy conversion by utilizing the flow control plate structure, saves resources, adopts the diamond-like guide leg structure, reduces the impact of wave current on the jacket and reduces the environmental load born by the jacket, and the jacket structure has the advantages of less steel consumption, simple structure, convenient installation, strong economy and stronger self-adaption capability to the direction of the environmental load; the novel jacket platform structure can ensure the development of offshore oil and gas in a green environment-friendly, efficient, safe and economical way.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "left", "right", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in place when the inventive product is used, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Claims (4)
1. Novel jacket platform suitable for offshore oil and gas exploitation, its characterized in that includes:
the novel lifting device comprises a bottom frame (1) and a platform deck (2), wherein a supporting frame (3) is arranged between the bottom frame (1) and the platform deck (2); a plurality of groups of flow control components are arranged in the support frame (3), each flow control component 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), a flow control plate (5) is rotatably arranged in the middle of each mounting groove (41), and the movable ends of the flow control plates (5) extend to the outer sides of the mounting grooves (41);
the support frame (3) comprises three guide legs (31) which are 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 between the three guide legs (31), and the cross braces (32) of the same layer form a triangular structure; a plurality of diagonal braces (33) are also fixed among the three guide legs (31); the flow control base (4) is fixed between two guide legs (31); the underframe (1) comprises three supporting legs (11), 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) which are 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);
the flow control plate (5) is of an integrated structure, the flow control plate (5) comprises a fixed part (51) and a movable part (52), one end of the fixed part (51) is fixedly connected with the movable part (52), a hinge hole (53) is formed in the fixed part (51) in a penetrating mode, through grooves (54) are formed in the fixed part (51) and the movable part (52), the cross section of the movable part (52) is triangular, the top end of the movable part (52) is fixed with the fixed part (51), and an inwards-sunken arc groove (521) is formed in the bottom side of the movable part (52); the bearing (6) is embedded in the hinge hole (53); the tail part of the flow control plate (5) is of an upturned structure, when ocean current positively impacts the flow control plate (5), the flow speed above the flow control plate (5) is reduced, the pressure is increased, and the flow below the flow control plate (5) normally flows, so that the pressure difference is formed between the upper part and the lower part of the flow control plate (5), downward pressure is generated, and the stability of a jacket platform is enhanced; when the ocean current direction is changed, the ocean current reversely impacts the flow control plate (5), and the inclined surface exists on the tail structure of the flow control plate (5), so that an inclined upward component force is generated when the transverse acting force of the ocean current acts on the tail of the flow control plate (5), the flow control plate (5) is pushed to turn around the front end plate hole of the flow control plate as the center of a circle, the flow direction of the flow control plate (5) is changed, and after the flow control plate is turned into the mounting groove (41) of the flow control base (4), downward pressure can be continuously given to the jacket platform, and the stability of the platform is improved.
2. A novel jacket platform suitable for offshore oil and gas production as claimed in claim 1, wherein: the bottom side of platform deck (2) still is provided with a plurality of criss-cross beam (21) that set up, crossbeam (21) are fixed in between guide leg (31) and platform deck (2).
3. A novel jacket platform suitable for offshore oil and gas production as claimed in claim 1, wherein: the cross section of the guide leg (31) is of a diamond structure, the joint of the guide leg is arc-shaped, the inside of the guide leg (31) is of a hollow structure, and the guide leg (31) is fixedly provided with a hollow cylinder (311).
4. A novel jacket platform suitable for offshore oil and gas production as claimed in claim 1, wherein: the middle parts of the three guide legs (31) are vertically provided with risers, and the risers are used for communicating the platform deck (2) with the submarine 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 CN114457773A (en) | 2022-05-10 |
| CN114457773B true CN114457773B (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210071664.1A Active CN114457773B (en) | 2022-01-21 | 2022-01-21 | Novel jacket platform suitable for offshore oil and gas exploitation |
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