Building method of FPSO oil and gas treatment module

Abstract

The invention relates to the technical field of offshore oil module construction, in particular to an FPSO oil gas treatment module construction method which comprises the steps that an oil gas treatment module is split into multiple modules, the multiple modules are constructed on a site, and the constructed modules are moved to the position, close to a wharf, of the front edge of a sliding way; according to the construction method, the whole oil-gas treatment module does not need to be constructed on a site, the requirement for the height of the site is low, the construction cost is low, the construction efficiency is high, the construction cost is low, and the construction cost is low. Therefore, the early-stage capital construction investment of a module construction manufacturer is relatively small, a higher and larger plant is not needed to meet the requirement of integral construction of the module, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore oil module construction, and particularly to a construction method for an FPSO oil and gas treatment module. Background Art

[0002] An FPSO (Floating Production Storage and Offloading), namely a floating production, storage and offloading unit, can preliminarily process and store crude oil, and is called an "offshore oil factory".

[0003] During the module construction process, module construction manufacturers generally complete the construction of the overall module in the workshop, then transport the whole module to the transport ship through an axle vehicle, and then install it after transporting it to the destination where the main hull manufacturer is berthed by the transport ship. During the construction of each layer of the module, after quickly completing the erection of the main structure framework, the equipment, pipelines, electrical instruments, outfitting parts, etc. of each layer are installed separately.

[0004] The above construction process requires overall construction in the workshop, which has relatively high requirements for the height of the workshop. That is to say, the module construction manufacturer has a large upfront infrastructure investment and needs a higher and larger workshop to meet the overall construction of the module, resulting in increased costs. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a construction method for an FPSO oil and gas treatment module to solve the problem of increased costs.

[0006] Based on the above purpose, the present invention provides a construction method for an FPSO oil and gas treatment module, including: A construction site; Constructing multiple modules at the site, including: Constructing a single module, including: Constructing a main structure of one layer, including: Constructing a first section of one layer and a second section of one layer, transporting them to the slipway erection area for positioning and erection, and positioning and erecting the first section of one layer and the second section of one layer at the module erection position for general assembly, and then continuing to install outfitting parts and equipment to complete the construction of the main structure of one layer; Constructing a main structure of the second layer, including: Constructing a first section of the second layer and a second section of the second layer, and hoisting them onto the main structure of the first layer for general assembly, and then continuing to install outfitting parts and equipment to complete the construction of the main structure of the second layer; Constructing a main structure of the flat top, including: Constructing a first section of the flat top and a second section of the flat top, and hoisting them onto the main structure of the second layer for general assembly, and then continuing to install outfitting parts and equipment to complete the construction of the main structure of the flat top; According to the site layout plan, continue to install outfitting parts and equipment. After all structural welds are completed, perform the final paint touch-up operation to complete the module construction. Module transportation: Use transportation equipment to move each completed module to a position near the dock at the front of the slipway. Module hoisting: Hoist and assemble multiple modules onto the offshore oil and gas platform on one side of the dock to complete the construction of the oil and gas treatment module.

[0007] Optionally, there are N - 2 layers of structures between the second - layer main structure and the Hiraji - top main structure, where N > 2. The construction method for each layer of the N - 2 layer structure is the same as that of the second - layer main structure.

[0008] Optionally, construct the first - layer main structure, including: Construct the first - layer first section: Construct the first sheet of the first layer. After completion, perform a 180 - degree roll - over on the slipway, then perform sandblasting and painting in the normal state. After painting, transport it to the slipway assembly area for positioning and assembly. Then, hoist and install columns and diagonal braces on the normal first sheet of the first layer. Continue to install some outfitting parts and equipment on the normal first sheet of the first layer for pre - outfitting. Construct the first - layer second section: Construct the second sheet of the first layer. After completion, perform a 180 - degree roll - over on the slipway, then perform sandblasting and painting in the normal state. After painting, transport it to the slipway assembly area for positioning and assembly. Then, hoist and install columns and diagonal braces on the normal second sheet of the first layer. Continue to install some outfitting parts and equipment on the normal second sheet of the first layer for pre - outfitting. According to the site layout plan, the first - layer first section and the first - layer second section are positioned and assembled at the module assembly position for general assembly. Continue to install outfitting parts and equipment to complete the construction of the first - layer main structure.

[0009] Optionally, construct the second - layer main structure, including: Construct the second - layer first section: Construct the first sheet of the second layer. After completion, perform a 180 - degree roll - over on the slipway, then hoist and install columns and diagonal braces on the normal first sheet of the second layer, and perform sandblasting and painting operations. Transport the normal first sheet of the second layer to the slipway assembly area and hoist it onto the first - layer main structure for installation. Continue to install outfitting parts and equipment on the normal first sheet of the second layer for pre - outfitting. Construct the second - layer second section: Construct the second sheet of the second layer. After completion, perform a 180 - degree roll - over on the slipway, then hoist and install columns and diagonal braces on the normal second sheet of the second layer, and perform sandblasting and painting operations. Transport the normal second sheet of the second layer to the slipway assembly area and hoist it onto the first - layer main structure for installation. Continue to install outfitting parts and equipment on the normal second sheet of the second layer for pre - outfitting. According to the site layout plan, the first section on the second floor and the second section on the second floor are assembled on the main structure of the first floor, and the outfitting parts and equipment are continuously installed to complete the construction of the main structure of the second floor.

[0010] Optionally, the construction of the flat top main structure includes: Construct the first section of the flat top: Construct the first sheet of the flat top. After completion, perform a 180-degree turnover on the slideway, carry out sandblasting and painting operations, transport the normal first sheet of the flat top to the slideway loading area and hoist it onto the main structure of the second floor for installation, and continue to install outfitting parts and equipment on the normal first sheet of the flat top for pre-outfitting; Construct the second section of the flat top: Construct the second sheet of the flat top. After completion, perform a 180-degree turnover on the slideway, carry out sandblasting and painting operations, transport the normal second sheet of the flat top to the slideway loading area and hoist it onto the main structure of the second floor for installation, and continue to install outfitting parts and equipment on the normal second sheet of the flat top for pre-outfitting; According to the site layout plan, the first section of the flat top and the second section of the flat top are assembled on the main structure of the second floor, and the outfitting parts and equipment are continuously installed to complete the construction of the flat top main structure.

[0011] Optionally, the construction of the top main structure includes: Construct the top sheet, hoist and install the columns and diagonal braces. After completion, perform a 180-degree turnover on the slideway, carry out sandblasting and painting operations, transport the normal top sheet to the slideway loading area, continue to install outfitting parts and equipment for pre-outfitting, and then hoist it onto the flat top main structure for installation, and continue to install outfitting parts and equipment to complete the construction of the top main structure.

[0012] Optionally, when constructing the site, perform corresponding site resource allocation.

[0013] Optionally, the columns and diagonal braces for hoisting and installation are the columns and diagonal braces that have been painted separately.

[0014] Optionally, the sandblasting and painting operations are carried out in a painting room.

[0015] Optionally, the transportation equipment is a hydraulic trolley or an SPMT axle line vehicle.

[0016] Advantages of the present invention: A construction method of an FPSO oil and gas treatment module provided by the present invention disassembles the oil and gas treatment module into multiple modules. These multiple modules are constructed on-site, and the constructed modules are moved to the front of the slideway near the dock position, and then hoisted and assembled onto an offshore oil and gas platform on one side of the dock. The assembly of multiple modules is carried out on the offshore oil and gas platform, thereby completing the construction of the oil and gas treatment module. This method does not require the overall oil and gas treatment module to be constructed on-site, has relatively low requirements for the height of the site, so the upfront infrastructure investment of the module construction manufacturer is relatively small, and there is no need for a higher and larger factory building to complete the overall construction of the module, reducing costs and avoiding material waste, and improving the construction efficiency. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic installation structure diagram of the first section on the first layer of the present invention; Figure 2 It is a schematic installation structure diagram of the second section on the first layer of the present invention; Figure 3 It is a schematic installation structure diagram of the first section on the second layer of the present invention; Figure 4 It is a schematic installation structure diagram of the second section on the second layer of the present invention; Figure 5 It is a schematic installation structure diagram of the first section of the flat secondary top of the present invention; Figure 6 It is a schematic installation structure diagram of the second section of the flat secondary top of the present invention; Figure 7 It is a schematic installation structure diagram of the top main structure of the present invention; Figure 8 It is a schematic structure diagram of the module of the present invention.

[0019] In the figure: 1. Main structure of the first layer; 11. First section of the first layer; 12. Second section of the first layer; 13. First sheet of the first layer; 14. Second sheet of the first layer; 2. Main structure of the second layer; 21. First section of the second layer; 22. Second section of the second layer; 23. First sheet of the second layer; 24. Second sheet of the second layer; 3. Main structure of the flat secondary top; 31. First section of the flat secondary top; 32. Second section of the flat secondary top; 33. First sheet of the flat secondary top; 34. Second sheet of the flat secondary top; 4. Top main structure; 41. Top sheet. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear and understandable, the following further elaborates on the present invention in detail with reference to specific embodiments and the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings understood by those of ordinary skill in the field to which the present invention pertains. The "first", "second", and similar terms used in the present invention do not denote any order, quantity, or importance, but are only used to distinguish different components. Terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] As Figures 1 to 8 shown, a construction method for an FPSO oil and gas treatment module includes: A construction site; Constructing multiple modules at the site, including: Constructing a single module, including: Constructing a first-layer main structure 1, including: Constructing a first-layer first section 11 and a first-layer second section 12, transporting them to the slipway loading area for positioning and loading, and positioning and loading the first-layer first section 11 and the first-layer second section 12 at the module loading position for overall assembly, and then continuing to install outfitting parts and equipment to complete the construction of the first-layer main structure 1; Constructing a second-layer main structure 2, including: Constructing a second-layer first section 21 and a second-layer second section 22, and hoisting them onto the first-layer main structure 1 for overall assembly, and then continuing to install outfitting parts and equipment to complete the construction of the second-layer main structure 2; Constructing a flat top main structure 3, including: Constructing a flat top first section 31 and a flat top second section 32, and hoisting them onto the second-layer main structure 2 for overall assembly, and then continuing to install outfitting parts and equipment to complete the construction of the flat top main structure 3; According to the site layout plan, continue to install outfitting parts and equipment, and perform a final paint touch-up operation after all structures are welded and assembled to complete the module construction; Module transportation: Moving each completed module to a position near the dock at the front of the slipway through transportation equipment; Module hoisting: Hoist and assemble multiple modules onto the offshore oil and gas platform on one side of the wharf, thus completing the construction of the oil and gas treatment module.

[0023] This method disassembles the oil and gas treatment module into multiple modules. The multiple modules are constructed on the site, and the completed modules are moved to the front of the slideway near the wharf, and then hoisted and assembled onto the offshore oil and gas platform on one side of the wharf. The multiple modules are assembled on the offshore oil and gas platform, thus completing the construction of the oil and gas treatment module. This method does not require the overall oil and gas treatment module to be constructed on the site, and has relatively low requirements for the height of the site. In this way, the upfront infrastructure investment of the module construction manufacturer is relatively small, and there is no need for a higher and larger factory building to meet the completion of the overall module construction. In addition, the construction sequence of the multiple modules reduces the maintenance time and more likely reduces the possibility of the overall demolition and reinstallation project, reduces costs and avoids material waste, and improves the construction efficiency.

[0024] Such as Figures 1 to 8 shown, a construction method for an FPSO oil and gas treatment module includes: Construction site and corresponding site resource allocation, and detailed planning of the construction methods for each different type of module, so as to more reasonably and efficiently achieve the smooth delivery of the module according to the planned requirements; According to the site resources, construct multiple modules on the site, including: Construction of a single module, including: Construct the first-layer main structure 1, including: Construct the first-layer first section 11: Construct the first-layer first sheet 13 (the first-layer first sheet 13 is constructed in reverse). After completion, perform a 180-degree rollover of the slideway in sequence, install some outfitting parts in the normal state, transport them to the painting workshop in the normal state for sandblasting and painting operations, and after painting, transport them to the slideway loading area in the site for positioning and loading. Then, hoist and install the separately painted columns and braces on the normal first-layer first sheet 13, and continue to install some outfitting parts and equipment on the normal first-layer first sheet 13 for pre-outfitting; Construct the first-layer second section 12: Construct the first-layer second sheet 14 (the first-layer second sheet 14 is constructed in reverse). After completion, perform a 180-degree rollover of the slideway in sequence, install some outfitting parts in the normal state, transport them to the painting workshop in the normal state for sandblasting and painting operations, and after painting, transport them to the slideway loading area for positioning and loading. Then, hoist and install the separately painted columns and braces on the normal first-layer second sheet 14, and continue to install some outfitting parts and equipment on the normal first-layer second sheet 14 for pre-outfitting; According to the site layout plan, the first-layer first section 11 and the first-layer second section 12 are positioned and loaded at the module loading position for general assembly, and continue to install outfitting parts and equipment, thus completing the construction of the first-layer main structure 1; Construct the second-layer main structure 2, including: Construct the first second - floor section 21: Construct the first second - floor sheet 23 (the first second - floor sheet 23 is constructed in the reverse way). After completion, turn it over 180 degrees on the slideway in sequence, install outfitting parts in the normal state, hoist and install the separately painted columns and diagonal braces on the normal first second - floor sheet 23, transport it to the painting workshop in the normal state for sandblasting and painting operations, transport the normal first second - floor sheet 23 to the slideway loading area and hoist it onto the first - floor main structure 1 for installation, and continue to install outfitting parts and equipment on the normal first second - floor sheet 23 for pre - outfitting; Construct the second second - floor section 22: Construct the second second - floor sheet 24 (the second second - floor sheet 24 is constructed in the reverse way). After completion, turn it over 180 degrees on the slideway in sequence, install outfitting parts in the normal state, hoist and install the separately painted columns and diagonal braces on the normal second second - floor sheet 24, transport it to the painting workshop in the normal state for sandblasting and painting operations, transport the normal second second - floor sheet 24 to the slideway loading area and hoist it onto the first - floor main structure 1 for installation, and continue to install outfitting parts and equipment on the normal second second - floor sheet 24 for pre - outfitting; According to the site layout plan, the first second - floor section 21 and the second second - floor section 22 are assembled on the first - floor main structure 1, and continue to install outfitting parts and equipment, thus completing the construction of the second - floor main structure 2; Construct the flat - top main structure 3, including: Construct the first flat - top section 31: Construct the first flat - top sheet 33 (the first flat - top sheet 33 is constructed in the reverse way). After completion, turn it over 180 degrees on the slideway in sequence, install outfitting parts in the normal state, transport it to the painting workshop in the normal state for sandblasting and painting operations, transport the normal first flat - top sheet 33 to the slideway loading area and hoist it onto the second - floor main structure 2 for installation, and continue to install outfitting parts and equipment on the normal first flat - top sheet 33 for pre - outfitting; Construct the second flat - top section 32: Construct the second flat - top sheet 34 (the second flat - top sheet 34 is constructed in the reverse way). After completion, turn it over 180 degrees on the slideway in sequence, install outfitting parts in the normal state, transport it to the painting workshop in the normal state for sandblasting and painting operations, transport the normal second flat - top sheet 34 to the slideway loading area and hoist it onto the second - floor main structure 2 for installation, and continue to install outfitting parts and equipment on the normal second flat - top sheet 34 for pre - outfitting; According to the site layout plan, the first flat - top section 31 and the second flat - top section 32 are assembled on the second - floor main structure 2, and continue to install outfitting parts and equipment, thus completing the construction of the flat - top main structure 3; Construct the top main structure 4, including: Construct the top sheet 41 (inverted construction of the top sheet 41), hoist and install the columns and diagonal braces that have been individually painted. After completion, turn the slide 180 degrees in sequence, install outfitting parts in the normal state, transport it to the painting workshop in the normal state for sandblasting and painting operations. Transport the normal top sheet 41 to the slide loading area, continue to install outfitting parts and equipment for pre-outfitting, then hoist and install it on the main structure 3 of the flat secondary top, and continue to install outfitting parts and equipment to complete the construction of the top main structure 4; According to the site layout plan, continue to install outfitting parts and equipment, such as module side ladders, top small outfitting platforms, and other small structural parts, etc. After all structural welding and loading are completed, carry out the final paint touch-up operation to complete the module construction; Module transportation: Each completed module can be moved to a position near the dock at the front of the slide through transportation equipment such as hydraulic trolleys or SPMT axle vehicles; Hoist the module onto the offshore oil and gas platform: After each module is moved to the dock area at the front of the slide, it will be hoisted onto the offshore oil and gas platform as a whole by a floating crane. Assemble multiple modules onto the offshore oil and gas platform to complete the construction of the oil and gas treatment module. In addition, when selecting a floating crane, a floating crane that meets the module weight and hoisting requirements should be selected. According to the module and main hull parameters, etc., a large floating crane of 5000t or 3000t is preferred. At the same time, the sling configuration should also be selected to meet the corresponding requirements.

[0025] This module construction plan generally ensures the smooth implementation of the project as planned, optimizes the construction sequence and reasonable site layout, and has a beneficial effect on project cost control. In addition, there is a large range of floating cranes to choose from and many manufacturers of transportation equipment to choose from, avoiding the uniqueness of external resource selection and greatly saving the project construction cost.

[0026] Those of ordinary skill in the art should understand that: The discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples. The present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above methods and structures to be implemented; Under the idea of the present invention, the technical features between the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail.

[0027] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for constructing an FPSO oil and gas processing module, characterized in that: include, Construction site; Multiple modules are constructed on site: including: Construction of a single module: including: Build a main structure on one floor, including: Build the first section of the first floor and the second section of the first floor, transport them to the slideway loading area for positioning and loading, and position the first section of the first floor and the second section of the first floor at the module loading position for general assembly, and continue to install outfitting parts and equipment, thus completing the construction of the main structure of the first floor; Construct the two-story main structure, including: Construct the first section of the second floor and the second section of the second floor, and hoist them onto the main structure of the first floor for assembly, and continue to install outfitting and equipment, thus completing the construction of the main structure of the second floor; Construct the main structure of the flat roof, including: Construct the first section and the second section of the flat roof, and hoist them to the second-floor main structure for assembly, and continue to install outfitting parts and equipment, thus completing the construction of the main structure of the flat roof; According to the site layout, continue to install outfitting and equipment. After all structural welding and loading are completed, carry out the final paint job to complete the module construction; Module transportation: Each completed module is moved to the front of the slideway close to the dock by means of transportation equipment; Module hoisting: Hoist and assemble multiple modules onto the offshore oil and gas platform on one side of the wharf, thus completing the construction of the oil and gas processing module.

2. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: An N-2-layer structure is arranged between the second-layer main structure and the flat secondary roof main structure, where N is greater than 2, and the construction method of each layer of the N-2-layer structure is the same as that of the second-layer main structure.

3. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: Build a main structure on one floor, including: Build the first section of one layer: Build the first piece of one layer. After completion, turn the slideway 180 degrees, sandblast and paint it in the normal state, and transport it to the slideway loading area for positioning and loading. Then, hoist and install columns and diagonal braces on the first piece of the normal layer, and continue to install some outfitting parts and equipment on the first piece of the normal layer for pre-outfitting; Build the second section of the first floor: Build the second piece of the first floor. After completion, turn the slideway 180 degrees, sandblast and paint it in the normal state, and transport it to the slideway loading area for positioning and loading. Then, hoist and install the columns and diagonal braces on the second piece of the first floor in the normal state, and continue to install some outfitting parts and equipment on the second piece of the first floor in the normal state for pre-outfitting; According to the site layout diagram, the first section of the first floor and the second section of the first floor are positioned and loaded at the module loading position for general assembly, and outfitting parts and equipment are further installed to complete the construction of the main structure of the first floor.

4. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: Construct the two-story main structure, including: Construction of the first section of the second floor: Construction of the first piece of the second floor. After completion, turn the slideway 180 degrees, install columns and diagonal braces on the first piece of the second floor in normal state, perform sandblasting and painting operations, transport the first piece of the second floor in normal state to the slideway loading area and install it on the main structure of the first floor, and continue to install outfitting parts and equipment on the first piece of the second floor in normal state for pre-outfitting; Construction of the second section of the second floor: Construction of the second piece of the second floor. After completion, turn the slideway 180 degrees, install columns and diagonal braces on the second piece of the second floor in normal state, carry out sandblasting and painting, transport the second piece of the second floor in normal state to the slideway loading area and install it on the main structure of the first floor, and continue to install outfitting parts and equipment on the second piece of the second floor in normal state for pre-outfitting; According to the site layout diagram, the first section of the second floor and the second section of the second floor are assembled in the main structure of the first floor, and the outfitting parts and equipment are installed to complete the construction of the main structure of the second floor.

5. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: Construct the main structure of the flat roof, including: Construction of the first section of the flat secondary roof: Construction of the first piece of the flat secondary roof, after completion, the slideway is turned 180 degrees, sandblasting and painting are carried out, the first piece of the normal flat secondary roof is transported to the slideway loading area and hoisted to the second-floor main structure for installation, and outfitting parts and equipment are continued to be installed on the first piece of the normal flat secondary roof for pre-outfitting; Construction of the second section of the flat secondary roof: Construction of the second piece of the flat secondary roof, after completion, the slideway is turned 180 degrees, sandblasting and painting are carried out, the normal second piece of the flat secondary roof is transported to the slideway loading area and hoisted to the second-floor main structure for installation, and outfitting parts and equipment are continued to be installed on the normal second piece of the flat secondary roof for pre-outfitting; According to the site layout diagram, the first section of the flat roof and the second section of the flat roof are assembled on the second-floor main structure, and outfitting parts and equipment are installed to complete the construction of the main structure of the flat roof.

6. A method for constructing an FPSO oil and gas processing module according to claim 1 or 5, characterized in that: Construct the top main structure, including: Build the top piece, hoist and install the columns and diagonal braces. After completion, turn the slide 180 degrees, carry out sandblasting and painting, transport the normal top piece to the slide loading area, continue to install outfitting and equipment for pre-outfitting, then hoist it to the flat secondary top main structure for installation, continue to install outfitting and equipment, and thus complete the construction of the top main structure.

7. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: When building a site, make corresponding site resource allocation.

8. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: The columns and diagonal braces installed by hoisting are the columns and diagonal braces that have been painted separately.

9. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: Sandblasting and painting operations are carried out in the painting room.

10. The method for constructing an FPSO oil and gas processing module according to claim 1, characterized in that: The transport equipment is a hydraulic trolley or SPMT axle vehicle.

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