Optimization design method, structure, medium and equipment for ultra-deep water jacket structure

Abstract

The invention discloses an optimal design method and structure of an ultra-deep water jacket structure, a medium and equipment. Comprising the following steps that a first round pipe fitting with the diameter larger than a diameter set value and the pipe wall thickness larger than a wall thickness set value and a second round pipe fitting with the diameter smaller than or equal to the diameter set value and horizontally arranged are made of super-strong steel with the yield strength larger than the original yield strength; the diameter of the optimized second circular pipe fitting is determined to be the next-grade diameter value smaller than the original diameter according to the maritime work structure diameter standard, the pipe wall thicknesses of the optimized first circular pipe fitting and the optimized second circular pipe fitting are obtained through calculation according to a bending strength calculation formula, the wall thickness of the optimized first circular pipe fitting is reduced, the weight is reduced, and the cost is reduced. The diameter of the second round pipe fitting is reduced and the wall thickness is increased after optimization, the size of the whole structure is reduced due to the reduction of the diameter, the buoyancy of the horizontal layer is reduced, the gravity and the buoyancy are simultaneously controlled to be reduced by corresponding percentages in application, the floating states before and after optimization are kept consistent, and the construction risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore petroleum engineering, and in particular to an optimization design method for an ultra-deepwater jacket structure and an ultra-deepwater jacket structure. Background Art

[0002] As my country's oil and gas exploration and development activities in the South China Sea continue to expand into deepwater areas, the number of newly discovered oil and gas fields in the water depth range of 200 to 400 meters is increasing. In view of the significant economic advantages of developing oil and gas fields in this depth range, deepwater jacket platforms have naturally become the preferred technical solution for developing these oil and gas fields. However, the installation process of deepwater jackets is limited by the carrying capacity of launching barges, especially my country's largest launching barge HYSY229, whose 37,000-ton launching capacity has become a key bottleneck restricting the design, installation and further exploration of deepwater jackets. After years of in-depth research, CNOOC found that the weight of a 300-meter deepwater jacket built according to traditional steel materials and design methods has reached 38,000 tons, which exceeds the load limit of HYSY229, resulting in the inability to smoothly install the 300-meter deepwater jacket.

[0003] Therefore, there is an urgent need for an optimized design method, structure, medium and equipment for an ultra-deepwater jacket structure to solve the above technical problems. Summary of the invention

[0004] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing 300-meter deep-water jacket constructed according to traditional steel materials and design methods has a weight of up to 38,000 tons, which exceeds the load-bearing limit of HYSY229, resulting in the inability to smoothly install the 300-meter deep-water jacket.

[0005] To this end, in a first aspect, the present invention provides an optimization design method for an ultra-deepwater jacket structure, comprising the following steps:

[0006] The first round pipe with a diameter greater than a set diameter value and a wall thickness greater than a set wall thickness value in the original ultra-deepwater jacket structure and the second round pipe with a diameter less than or equal to the set diameter value and located outside the horizontal layer are made of ultra-strong steel with a yield strength greater than the original yield strength;

[0007] Under the condition that the original diameter and bending strength of the first round tube remain unchanged, the wall thickness of the optimized first round tube is calculated according to the bending strength calculation formula;

[0008] Determine the optimized diameter of the second round pipe to be the next smaller diameter than the original diameter according to the offshore structure diameter standard;

[0009] Under the condition that the diameter of the second round tube is determined and the original bending strength is kept unchanged, the wall thickness of the optimized second round tube is calculated according to the bending strength calculation formula;

[0010] An optimized first round tube is manufactured according to the selected super-strong steel material, the diameter of the first round tube and the wall thickness of the first round tube, and an optimized second round tube is manufactured according to the selected super-strong steel material, the diameter of the second round tube and the wall thickness of the second round tube;

[0011] The optimized first round tube and the second round tube are assembled to replace the original first round tube and the second round tube to obtain the optimized ultra-deepwater jacket.

[0012] In the specific implementation of the above-mentioned optimization design method for ultra-deepwater jacket structure, the bending strength calculation formula is:

[0013]

[0014] Among them, M is the bending strength, σ is the yield strength of steel, and y is m Safety factor, D is the diameter of the round pipe, d is the wall thickness of the round pipe, x max is the maximum distance from the neutral axis.

[0015] In a specific implementation of the above-mentioned method for optimizing the design of an ultra-deepwater jacket structure, the diameter setting value is 914 mm, and the wall thickness setting value is 60 mm.

[0016] In a specific implementation of the above-mentioned method for optimizing the design of the ultra-deepwater jacket structure, the yield strength of the ultra-high-strength steel material differs from the original yield strength by a set difference, and the set difference is 65 MPa.

[0017] In a specific implementation of the above-mentioned optimization design method for ultra-deepwater jacket structure, when the first and second round pipes in the original deepwater jacket are made of DH36 steel, the ultra-high-strength steel is DH420 with a yield strength of 420 MPa.

[0018] In a second aspect, the present invention further provides an ultra-deepwater jacket structure, comprising a main leg group, large-scale oblique support rods, transverse rods and longitudinal rods, the number of the main leg groups is two and they are distributed in a symmetrical manner, the main leg group comprises a plurality of main legs arranged side by side in a horizontal direction, the corresponding main legs in the two main leg groups are fixedly connected by a plurality of longitudinal rods distributed at intervals up and down, the main legs in the main leg groups are fixedly connected by a plurality of transverse rods distributed at intervals up and down and a plurality of large-scale oblique support rods, the main legs and the large-scale oblique support rods are both made of the first round tube in the optimization design method for the ultra-deepwater jacket structure described in any one of claims 1-5, and the transverse rods and the longitudinal rods located on the periphery of the horizontal layer are both made of the second round tube in the optimization design method for the ultra-deepwater jacket structure described in any one of claims 1-5.

[0019] In a third aspect, the present invention further provides a computer storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method for optimizing the design of an ultra-deepwater jacket structure described in any one of the first aspects are implemented.

[0020] In a fourth aspect, the present invention further provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method for optimizing the design of an ultra-deepwater jacket structure described in any one of the first aspects are implemented.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention optimizes the first round tube and the second round tube by replacing the original steel with low yield strength with super-strong steel with higher yield strength. Under the condition that the bending strength remains unchanged, the wall thickness of the first round tube is thinned after optimization, which reduces the weight and realizes the economy of the material and the lightweight of the structure. Under the condition that the bending strength remains unchanged, the diameter of the second round tube is reduced and the wall thickness is increased after optimization. Due to the reduction in diameter, the volume of the entire structure, that is, the displacement, decreases, thereby causing the buoyancy of the horizontal layer to decrease. Since the buoyancy is controlled by the gravity and buoyancy of the launched object, the present invention controls the gravity and buoyancy to be reduced by corresponding percentages at the same time during application, thereby ensuring that the launched buoyancy of the optimized deep-water jacket is consistent with that of the traditional steel jacket, thereby reducing the construction risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0024] Figure 1 This is a flowchart of the steps of the optimization design method of the ultra-deepwater jacket structure provided by the present invention.

[0025] Figure 2is a schematic diagram of the diameter and wall thickness of the first circular tube;

[0026] Figure 3 It is a schematic diagram of the structure of an ultra-deepwater jacket.

[0027] List of reference numerals:

[0028] 1. Main legs; 2. Large-scale diagonal support members; 3. Longitudinal members; 4. Transverse members. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are used to define components, only for the convenience of distinguishing the above components, and unless otherwise stated, the above terms have no special meanings and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention relates to the field of offshore oil engineering technology, and in particular to an optimization design method for an ultra-deepwater jacket structure and an ultra-deepwater jacket structure. The purpose is to solve the problem that the existing 300-meter deepwater jacket constructed according to traditional steel materials and design methods has a weight of up to 38,000 tons, which exceeds the load-bearing limit of HYSY229, resulting in the inability to smoothly install the 300-meter deepwater jacket. To this end, the optimization design method of the ultra-deepwater jacket structure provided by the present invention comprises the following steps: the materials of the first round pipe member having a diameter greater than a set diameter value and a wall thickness greater than a set wall thickness value in the original ultra-deepwater jacket structure and the second round pipe member having a diameter less than or equal to the set diameter value and located at the periphery of the horizontal layer are both selected to be ultra-high-strength steel materials having a yield strength greater than the original yield strength; the wall thickness of the optimized first round pipe member is calculated according to the bending strength calculation formula under the condition that the diameter and bending strength of the original first round pipe member remain unchanged; the diameter of the optimized second round pipe member is determined to be the next diameter value smaller than the original diameter according to the diameter standard of the offshore structure; the wall thickness of the optimized second round pipe member is calculated according to the bending strength calculation formula under the condition that the diameter of the second round pipe member is determined and the original bending strength remains unchanged; according to the selected ultra-high-strength steel material, the diameter of the first round pipe member and the bending strength of the first round pipe member are calculated according to the bending strength calculation formula; The wall thickness of the round tube is optimized to produce the first round tube, and the optimized second round tube is produced according to the selected ultra-high-strength steel material, the diameter of the second round tube and the wall thickness of the second round tube; the optimized first round tube and the second round tube are assembled to replace the original first round tube and the second round tube to obtain the optimized ultra-deepwater jacket. Under the condition of ensuring the bending strength remains unchanged, the wall thickness of the first round tube is thinned after optimization, which reduces the weight and achieves the economy of materials and lightweight structure; the diameter of the second round tube is reduced and the wall thickness is increased after optimization. Due to the reduction in diameter, the volume of the entire structure, that is, the displacement, is reduced, thereby causing the buoyancy of the horizontal part to decrease. Since the buoyancy is controlled by the gravity and buoyancy of the launched object, the present invention simultaneously controls the gravity and buoyancy to decrease by corresponding percentages during application, thereby ensuring that the launched buoyancy of the optimized deepwater jacket is consistent with that of the traditional steel jacket, thereby reducing the construction risk.

[0033] Hereinafter, an optimization design method for an ultra-deepwater jacket structure and an ultra-deepwater jacket structure provided by an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0034] The optimized design of the present invention is aimed at the existing deepwater jacket. In order to be able to be installed at 300 meters or even below 300 meters, the optimized design is performed on the basis of the original deepwater jacket.

[0035] See also Figure 1-2 The present invention provides an optimization design method for an ultra-deepwater jacket structure, the optimization design method comprising the following steps:

[0036] S1, the material of the first round pipe with a diameter greater than the set diameter value and a wall thickness greater than the set wall thickness value in the original ultra-deepwater jacket structure and the second round pipe with a diameter less than or equal to the set diameter value and located outside the horizontal layer are both made of ultra-high-strength steel with a yield strength greater than the original yield strength;

[0037] In step S1, the horizontal layer refers to a portion of the ultra-deepwater jacket that is parallel to the horizontal plane and is installed with the second round pipe. Figure 2 The ultra-deepwater jacket shown has a plurality of horizontal layers, and the second round pipe member outside the horizontal layer refers to the round pipe member located at the outermost side;

[0038] S2, calculating the wall thickness of the optimized first circular tube according to the bending strength calculation formula while keeping the original diameter and bending strength of the first circular tube unchanged;

[0039] S3, determining the diameter of the optimized second round pipe to be a diameter value of the next level smaller than the original diameter according to the offshore structure diameter standard;

[0040] S4, while determining the diameter of the second circular tube and keeping the original bending strength unchanged, calculating the wall thickness of the optimized second circular tube according to the bending strength calculation formula;

[0041] In step S4, since the second round tube is made of super-strong steel with higher yield strength, the diameter is selected to be a diameter value of the next level smaller than the original diameter. However, due to the reduction in diameter, the required bending resistance cannot be met. Therefore, in order to ensure the same bending strength, the wall thickness of the second round tube needs to be increased.

[0042] S5, manufacturing an optimized first round tube according to the selected super-strong steel material, the diameter of the first round tube and the wall thickness of the first round tube, and manufacturing an optimized second round tube according to the selected super-strong steel material, the diameter of the second round tube and the wall thickness of the second round tube;

[0043] S6, assembling the optimized first round tube and the second round tube to replace the original first round tube and the second round tube to obtain an optimized ultra-deepwater jacket.

[0044] Specifically, the bending strength calculation formula is:

[0045]

[0046] Among them, M is the bending strength, σ is the yield strength of steel, and y is m Safety factor, W x is the flexural modulus of steel.

[0047] W x The specific calculation formula is:

[0048]

[0049] Among them, I x is the moment of inertia about the x-axis, x max is the maximum distance from the neutral axis.

[0050]

[0051] Wherein, D is the diameter of the round tube and d is the wall thickness of the round tube.

[0052] According to the calculation formula of bending modulus and the calculation formula of inertia moment of x-axis, the calculation formula of bending strength is as follows:

[0053]

[0054] It can be seen from the above bending strength calculation formula that the bending strength of a round tube is related to the diameter of the round tube and the thickness of the tube wall.

[0055] In one embodiment, the diameter setting value is 914 mm and the wall thickness setting value is 60 mm.

[0056] In one embodiment, the yield strength of the super-strong steel material is different from the original yield strength by a set difference, and the set difference is 65Mpa. In the case where the first round pipe and the second round pipe in the original deepwater jacket are made of DH36 steel, the super-strong steel material is DH420 material, and the yield strength is 420Mpa. The yield strength of DH36 steel is 355Mpa.

[0057] In the above embodiment, under the condition of ensuring that the bending strength remains unchanged, the wall thickness of the first round tube is thinned after optimization, thereby reducing the weight, and the diameter of the second round tube is reduced and the wall thickness is increased after optimization. Due to the reduction in diameter, the volume of the entire structure, that is, the displacement, is reduced, thereby causing the buoyancy of the horizontal layer to decrease. Since the floating state is controlled by the gravity and buoyancy of the launched object, the present invention controls the gravity and buoyancy to be reduced by corresponding percentages at the same time during application, thereby ensuring that the floating state of the optimized deep-water jacket frame after launching is consistent with the floating state of the traditional steel jacket frame, thereby reducing the construction risk.

[0058] On the other hand, see Figure 3The present invention also provides an ultra-deepwater jacket structure, including a main leg group, a large-scale oblique support rod 2, a transverse rod 4 and a longitudinal rod 3. The number of main leg groups is two and they are symmetrically distributed. The main leg group includes a plurality of main legs 1 arranged side by side in the horizontal direction. The corresponding main legs 1 in the two main leg groups are fixedly connected by a plurality of longitudinal rods 3 distributed at intervals up and down. The main legs 1 in the main leg groups are fixedly connected by a plurality of transverse rods 4 and a plurality of large-scale oblique support rods 2 distributed at intervals up and down. The main legs 1 and the large-scale oblique support rods 2 are both made of the first round tube in the optimization design method for the ultra-deepwater jacket structure described in the above embodiment. The transverse rods 4 and the longitudinal rods 3 located on the periphery of the horizontal layer are both made of the second round tube in the optimization design method for the ultra-deepwater jacket structure described in the above embodiment. The large-scale oblique support rod refers to an oblique support rod with a diameter greater than 914 mm.

[0059] Specifically, Figure 3 As shown, each main leg group includes four main legs 1, and the two main leg groups have a total of eight main legs 1. In each main leg group, adjacent main legs are fixedly connected to each other by multiple large-scale oblique support rods. Large-scale oblique support rods refer to rods with a diameter greater than 914 mm and distributed in an inclined state. A part of the large-scale oblique support rods fix the adjacent main legs in a way that each two are combined to form the shape of the letter X. Multiple transverse rods 4 are distributed in intervals up and down, and each transverse rod 4 connects all the main legs 1 in the corresponding main leg group. The transverse rods 4 and the longitudinal rods 3 located on the periphery of the horizontal layer are surrounded together to form a rectangular structure. The ultra-deepwater jacket is divided into multiple horizontal layers from top to bottom. Transverse rods 4 and longitudinal rods 3 are set in each horizontal layer. The transverse rods 4 and longitudinal rods 3 cooperate to form a rectangular structure located on the periphery of the horizontal layer. The large-scale oblique support rods are set in the rectangular space formed by two adjacent transverse rods and two adjacent main legs.

[0060] In another embodiment, the present invention further provides a computer program product that enables the optimization design method of ultra-deepwater jacket structures to be specifically implemented. The computer program product may include a computer-readable storage medium on which computer-readable program instructions for executing the optimization design method of deepwater jacket structures are loaded.

[0061] Computer readable storage media can be tangible devices that hold and store instructions used by instruction execution devices. Computer readable storage media can be, for example, but not limited to, electronic storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any combination thereof.

[0062] In another embodiment, the present invention further provides a processing device capable of implementing the optimization design method of the ultra-deepwater jacket structure. The processing device may be a processing device for a client, such as a mobile phone, a computer, etc., to execute the optimization design method of the ultra-deepwater jacket structure in the above embodiment.

[0063] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. The memory stores a computer program that can be run on the processor, and the processor executes the optimization design method of the ultra-deepwater jacket structure provided by the above embodiment when running the computer program.

[0064] Preferably, the memory may be a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory.

[0065] Preferably, the processor may be a central processing unit (CPU), a digital signal processor (DSP) or other general-purpose processors of various types, which are not limited here.

[0066] The following is a specific description using the steel material of the original deepwater jacket, DH36, as an example.

[0067] like Figure 2-3 As shown, each main leg group includes four main legs. The main legs, large-scale oblique support rods and transverse rods are replaced by DH420 material with a yield strength of 420 MPa from the original DH36 material with a yield strength of 355 MPa. According to the optimization design method of the ultra-deepwater jacket structure, the main legs and large-scale oblique support rods are optimized according to the first circular tubes, and the transverse rods are optimized according to the second circular tubes.

[0068] Table 1 is a comparison of the parameters of the main legs made of Q355 and Q420

[0069]

[0070] From the data in Table 1, we can see that the original wall thickness is 85mm, and the wall thickness of the optimized main leg is 75mm. The optimized wall thickness is reduced by 10mm compared with the original, and the optimized weight is reduced by 15% compared with the original specifications. Steel can achieve material economy and structural lightness while maintaining the structural bending resistance.

[0071] Table 2 Comparison of parameters of transverse bars made of Q355 and Q420

[0072]

[0073] From the data in Table 2, it can be seen that the original diameter of the transverse rod is 914mm. After optimization according to the offshore structure diameter standard, the transverse rod selects the next diameter smaller than the original diameter, specifically 762mm. In order to ensure the bending resistance, the optimized transverse rod is thickened, and the wall thickness of the optimized transverse rod is 38mm. As the diameter of the transverse rod is reduced, the volume of the entire structure, that is, the displacement, is reduced, so the buoyancy is reduced. The optimized buoyancy is reduced by 30% compared with the original specification, which realizes the control of the floating state of the deepwater jacket and ensures that the overall floating state of the deepwater jacket meets the installation requirements.

[0074] Taking an ultra-deepwater jacket at a water depth of 320m in the South China Sea as an example, the traditional 355MPa grade steel is used, and the weight of the deepwater jacket structure reaches 42,000 tons, far exceeding the capacity of the HYSY229 launched ship. The overall design plan is not feasible. By designing part of the structure using ultra-high-strength steel, the weight of the jacket is reduced by 5,000t, ensuring that the deepwater jacket can be installed smoothly.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optimization design method for an ultra-deepwater jacket structure, characterized in that: The following steps are involved: The first round pipe with a diameter greater than a set diameter value and a wall thickness greater than a set wall thickness value in the original ultra-deepwater jacket structure and the second round pipe with a diameter less than or equal to the set diameter value and located outside the horizontal layer are made of ultra-strong steel with a yield strength greater than the original yield strength; Under the condition that the original diameter and bending strength of the first round tube remain unchanged, the wall thickness of the optimized first round tube is calculated according to the bending strength calculation formula; Determine the optimized diameter of the second round pipe to be the next smaller diameter than the original diameter according to the offshore structure diameter standard; Under the condition that the diameter of the second round tube is determined and the original bending strength is kept unchanged, the wall thickness of the optimized second round tube is calculated according to the bending strength calculation formula; An optimized first round tube is manufactured according to the selected super-strong steel material, the diameter of the first round tube and the wall thickness of the first round tube, and an optimized second round tube is manufactured according to the selected super-strong steel material, the diameter of the second round tube and the wall thickness of the second round tube; The optimized first round tube and the second round tube are assembled to replace the original first round tube and the second round tube to obtain the optimized ultra-deepwater jacket.

2. The optimization design method of the ultra-deepwater jacket structure according to claim 1, characterized in that: The bending strength calculation formula is: Among them, M is the bending strength, σ is the yield strength of steel, and y is m Safety factor, D is the diameter of the round pipe, d is the wall thickness of the round pipe, x max is the farthest distance from the neutral axis.

3. The method for optimizing the design of an ultra-deepwater jacket structure according to claim 1, characterized in that: The diameter setting value is 914 mm, and the wall thickness setting value is 60 mm.

4. The method for optimizing the design of an ultra-deepwater jacket structure according to claim 1, characterized in that: The yield strength of the super-high-strength steel material differs from the original yield strength by a set difference, and the set difference is 65 MPa.

5. The method for optimizing the design of an ultra-deepwater jacket structure according to claim 1, characterized in that: In the case that the first and second round pipes in the original deepwater jacket are made of DH36 steel, the super-strong steel is made of DH420 material with a yield strength of 420 MPa.

6. An ultra-deepwater jacket structure, characterized in that: It comprises a main leg group, a large-scale oblique support rod, a transverse rod and a longitudinal rod, the number of the main leg groups is two and they are symmetrically distributed, the main leg group comprises a plurality of main legs arranged side by side in the horizontal direction, the corresponding main legs in the two main leg groups are fixedly connected by a plurality of longitudinal rods spaced apart vertically, the main legs in the main leg groups are fixedly connected by a plurality of transverse rods spaced apart vertically and a plurality of large-scale oblique support rods, the main legs and the large-scale oblique support rods are both made of the first round tube in the optimization design method for the ultra-deepwater jacket structure described in any one of claims 1-5, the transverse rods and the longitudinal rods located on the periphery of the horizontal layer are both made of the second round tube in the optimization design method for the ultra-deepwater jacket structure described in any one of claims 1-5.

7. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for optimizing the design of an ultra-deepwater jacket structure according to any one of claims 1 to 5 are implemented.

8. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for optimizing the design of the ultra-deepwater jacket structure according to any one of claims 1 to 5 are implemented.

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