Deepwater lifting pipe-laying ship for 3000-meter-water-depth double-pipe-laying system

Abstract

The utility model discloses a deepwater lifting pipe-laying ship for a 3000-meter-water-depth double-pipe-laying system, a main ship body of the deepwater lifting pipe-laying ship is arranged to be of a three-layer continuous deck structure, and a bottom layer is a double-bottom layer and is used for arranging marine equipment; the middle layer is a freeboard deck and is used for arranging an S-Lay pipe laying area; the upper layer is a main deck and is used for arranging a J-Lay pipe laying area and a pipe stacking area; a full-rotation crane is arranged at the stern part of the main ship body; a moon pool is arranged in the middle of the main ship body, and a J-Lay tower is arranged on the upper portion of the moon pool. A living building and a helicopter platform are arranged at the bow part of the main hull; a plurality of full-revolving propellers, a plurality of telescopic propellers and a plurality of side propellers are arranged on the outer side face of the bottom of the main ship body. The deepwater lifting platform can continuously work at the water depth of 3000 meters, and is provided with an S-Lay pipe laying system and a J-Lay pipe laying system.

Description

Technical Field

[0001] The utility model relates to offshore engineering equipment, and more specifically, to a deepwater crane pipe-laying vessel for a 3000-meter water depth dual pipe-laying system. Background Art

[0002] A deepwater crane pipe-laying vessel is the main construction equipment for the development and construction of deepwater oil and gas resources. It is responsible for the installation of production platforms and offshore upper modules, the laying of subsea pipelines, and the installation of riser systems.

[0003] With the large-scale development of world offshore oil, the demand for deepwater crane pipe-laying vessels is increasing. As world offshore oil continues to develop towards deeper waters, the performance requirements for deepwater crane pipe-laying vessels are getting higher and the demand for multi-functional collaborative operations is becoming more obvious. However, the existing pipe-laying vessels in China generally have problems such as small lifting capacity, shallow water depth, single function, poor self-propulsion ability, and insufficient dynamic positioning ability, and cannot meet the rapidly developing market demand. Summary of the Utility Model

[0004] Aiming at the above-mentioned defects existing in the prior art, the purpose of the utility model is to provide a deepwater crane pipe-laying vessel for a 3000-meter water depth dual pipe-laying system, which can not only continuously operate at a water depth of 3000 meters, but also has a deepwater crane platform with S-Lay and J-Lay pipe-laying systems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A deepwater crane pipe-laying vessel for a 3000-meter water depth dual pipe-laying system:

[0007] The main hull of the deepwater crane pipe-laying vessel is provided with a 3-layer continuous deck structure. Among them, the bottom layer is a double bottom layer for arranging marine equipment; the middle layer is the freeboard deck for arranging the S-Lay pipe-laying area; the upper layer is the main deck for arranging the J-Lay pipe-laying area and the pipe storage area;

[0008] A full-rotation crane is provided at the stern of the main hull;

[0009] A moonpool is provided in the middle of the main hull, and a J-Lay tower is equipped above the moonpool;

[0010] A living building and a helicopter platform are provided at the bow of the main hull;

[0011] A plurality of full-rotation thrusters, a plurality of retractable thrusters and a plurality of side thrusters are provided on the outer side of the bottom of the main hull.

[0012] Preferably, the S-Lay pipe-laying area includes a main production line and auxiliary production lines arranged on both sides of the main production line.

[0013] Preferably, the full-rotation crane is a 5000-ton full-rotation crane.

[0014] Preferably, the bottom of the moonpool is equipped with a moonpool bottom cover.

[0015] Preferably, there are 2 full-rotation thrusters, which are 5000-7000 kW full-rotation thrusters, located at the outer side of the bottom of the main hull near the stern.

[0016] Preferably, there are 8 retractable thrusters, which are 3000-4000 kW retractable thrusters, evenly distributed on the outer side of the bottom of the main hull near the middle.

[0017] Preferably, there are 2 side thrusters, which are 2000-3000 kW side thrusters, located at the outer side of the bottom of the main hull near the bow.

[0018] Preferably, a maintenance area is also provided beside the pipe storage area.

[0019] Preferably, the total length of the main hull is 210-220 m, the molded breadth is 49-50 m, the molded depth is 22-23 m, and the draft is 8-12 m.

[0020] Preferably, the bow of the main hull is provided with a bulbous bow.

[0021] The deep-water crane pipe-laying vessel for a 3000-meter water-depth double pipe-laying system provided by the present utility model has a maximum full-rotation lifting capacity of up to 5000 tons, a maximum pipe-carrying capacity of up to 12000 tons, is equipped with an S-Lay and a J-Lay pipe-laying system and effectively combines them, and has the function of storing FPSO anchor chains. It has the ability to lay pipes in shallow water, deep water, and ultra-deep water with a single vessel, can lay pipes with a pipe diameter covering 5-60 inches, and the maximum pipe-laying water depth reaches 3000 meters. It truly realizes multi-purpose use of a single vessel, perfectly solves the complex problem of having to equip an S-Lay pipe-laying vessel, a J-Lay pipe-laying vessel, and a pipe transportation vessel for the same project, and while greatly improving the pipe-laying construction operation efficiency, it also saves a large amount of labor and material costs. Description of the Drawings

[0022] Figure 1 is a side view schematic diagram of the deep-water crane pipe-laying vessel of the present utility model;

[0023] Figure 2 is a plan view schematic diagram of the main deck in the deep-water crane pipe-laying vessel of the present utility model;

[0024] Figure 3 is a plan view schematic diagram of the freeboard deck in the deep-water crane pipe-laying vessel of the present utility model;

[0025] Figure 4Yes Figure 1 Schematic diagram in the A-A direction Specific implementation mode

[0026] In order to better understand the above technical solutions of the present utility model, the technical solutions of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Combined Figures 1 to 4 As shown, a deep-water lifting and pipe-laying vessel for a 3000-meter water-depth double pipe-laying system provided by the present utility model is as follows:

[0028] The main hull 1 of the deep-water lifting and pipe-laying vessel is a fully welded steel hull, and the main hull 1 is provided with a three-layer continuous deck structure. Among them, the bottom layer is a double bottom layer for arranging various marine equipment; the middle layer is the freeboard deck 17 for arranging the S-Lay pipe-laying area; the upper layer is the main deck 16 for arranging the J-Lay pipe-laying area 13 and the pipe storage area 14.

[0029] A 5000-ton full-rotation crane 5 is configured at the stern of the main hull 1.

[0030] A moonpool 4 is provided near the starboard side in the middle of the main hull 1. The bottom of the moonpool 4 is equipped with a moonpool bottom cover, and the upper part of the moonpool 4 is equipped with a J-Lay tower 6 for J-Lay pipe-laying.

[0031] A living building 2 and a helicopter platform 3 are provided at the bow of the main hull 1, and the living building 2 can accommodate up to 399 people.

[0032] Two 5000-7000 kW full-rotation thrusters 7 are provided on the outer side of the bottom of the main hull 1 near the stern position, and the maximum speed can reach 11 knots at full speed.

[0033] Two 2000-3000 kW side thrusters 8 are provided on the outer side of the bottom of the main hull 1 near the bow position.

[0034] Eight 3000-4000 kW retractable thrusters 9 are evenly distributed on the outer side of the bottom of the main hull 1 near the middle position.

[0035] Under the combined action of 12 thrusters, the deep-water lifting and pipe-laying vessel of the present utility model can meet the DP-3 class dynamic positioning and navigation requirements.

[0036] A total of 8 positioning winches are configured at the bow and stern of the main hull 1 for shallow water area mooring positioning.

[0037] The S-Lay pipe-laying area of the freeboard deck 17 mainly includes the main production line 10, and the auxiliary production lines 11 and 12 arranged on both sides of the main production line 10 (near the starboard side and the port side respectively).

[0038] Embodiment

[0039] Refer again to Figures 1 to 4 As shown, a deepwater crane pipe-laying vessel for a 3000-meter water depth dual pipe-laying system provided in this embodiment has a lifting capacity of 5000 tons, can achieve S-Lay pipe-laying and J-Lay pipe-laying at a water depth of 3000 meters, and effectively combines the two methods. The specific layout is as follows:

[0040] The total length of the main hull 1 of the deepwater crane pipe-laying vessel is 210 - 220 meters, the molded breadth is 49 - 50 meters, the molded depth is 22 - 23 meters, and the draft is 8 - 12 meters.

[0041] The vessel is a deepwater crane pipe-laying vessel with DP3 dynamic positioning, mainly composed of the main hull 1, the accommodation building 2, the helicopter platform 3, the moonpool 4, the S-Lay pipe-laying area, the J-Lay pipe-laying area 13, the pipe storage area 14, the maintenance area 15, etc. The maximum pipe-laying water depth exceeds 3000 meters.

[0042] A 5000-ton full-rotation crane 5 is configured at the stern of the main hull 1. While meeting the 360-degree full-rotation lifting operation, it can also independently carry out the installation of the upper module of offshore engineering and rescue and salvage, and can also meet the lifting requirements of S-Lay and J-Lay pipe-laying operations in cooperation with the vessel, etc.

[0043] The S-Lay pipe-laying area is arranged on the freeboard deck 17 of the main hull 1, including the main production line 10, the auxiliary production line 11 near the starboard side, and the auxiliary production line 12 near the port side. At the same time, a pipe transmission system, a lifting system, a welding system, a detection system, a tensioning system, a coating system, etc. are also configured, which can meet the pipe-laying operations with pipe diameters from 5 inches to 60 inches. In order to improve the pipe-laying efficiency of J-Lay pipe-laying, it can also be temporarily used as a four-section pipe prefabrication line for the J-Lay system.

[0044] The pipe storage area 14 is arranged on the main deck 16 of the main hull 1, and the maximum pipe storage capacity can reach 12000 tons, solving the problem that a large number of transport ships are needed to transport pipes during the pipe-laying operation. The pipe storage area 14 and the main deck 16 are connected by a bolt connection method, which can be quickly removed during non-pipe-laying operations, providing a maximum available deck area of 5000 square meters for other related operations.

[0045] The main hull 1 of the deepwater crane pipe-laying vessel is overall designed in a streamlined shape, and the bow is designed as a bulbous bow to minimize the navigation resistance. Two 5000 - 7000 kW full-rotation thrusters 7 are provided at the stern, and the speed can reach 11 knots when sailing at full speed. Two 2000 - 3000 kW side thrusters 8 and eight 3000 - 4000 kW retractable thrusters 9 are provided at the bow. Under the combined action of the 12 thrusters, it can meet the DP-3 level dynamic positioning and navigation requirements.

[0046] At the bow of the main hull 1, there is a living building 2 and a helicopter platform 3. The living building 2 has 7 decks in total and is equipped with single rooms, double rooms, four-person cabins, offices, a navigation bridge, a kitchen and dining room, a recreation room, a gym, a dressing and laundry room, a hospital and other places, which can meet the simultaneous work, life, leisure, etc. of up to 399 people. The take-off weight of the helicopter platform 3 is 15.6 tons.

[0047] In summary, the deepwater crane pipe-laying vessel of the present utility model for a 3000-meter water depth double pipe-laying system can meet the operation under harsh sea conditions, and at the same time has multiple functions such as S-Lay pipe-laying, J-Lay pipe-laying, heavy lift and transportation, FPSO anchor chain storage and transportation, etc. It has significant advantages in terms of pipe-laying performance, lifting capacity, working water depth, positioning ability, working efficiency, etc., and will play a crucial role in the field of deepwater ocean. The research, manufacturing and industrialization of the key technologies of the present utility model will not only fill the domestic gap in this field, but also drive the development of the domestic machinery, electricity and hydraulic related fields, and break the foreign monopoly in the design and manufacturing of deepwater large pipe-laying vessels and their equipment technology fields.

[0048] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present utility model, rather than to limit the present utility model. As long as within the scope of the substantial spirit of the present utility model, changes and modifications to the above-described embodiments will fall within the scope of the claims of the present utility model.

Claims

1. A deepwater crane pipe-laying vessel for a double pipe-laying system at a water depth of 3,000 meters, characterized in that: The main hull of the deepwater crane pipe-laying vessel is configured as a three-layer continuous deck structure, wherein the bottom layer is a double bottom layer for arranging ship equipment; the middle layer is a freeboard deck for arranging the S-Lay pipe-laying area; the upper layer is a main deck for arranging the J-Lay pipe-laying area and the pipe stacking area; A fully revolving crane is provided at the stern of the main hull; A moon pool is provided in the middle of the main hull, and a J-Lay tower is provided on the upper part of the moon pool; The bow of the main hull is provided with a living building and a helicopter platform; A plurality of full-rotation thrusters, a plurality of retractable thrusters and a plurality of side thrusters are arranged on the outer side surface of the bottom of the main hull.

2. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The S-Lay pipe laying area includes a main production line and auxiliary production lines arranged on both sides of the main production line.

3. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The full-slewing crane adopts a 5,000-ton full-slewing crane.

4. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The bottom of the moon pool is provided with a moon pool bottom cover.

5. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: There are two fulcrum thrusters, each of which has a power of 5,000 to 7,000 kilowatts, and are located on the outer side of the bottom of the main hull near the stern.

6. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: There are 8 retractable thrusters, which are 3000-4000 kilowatt retractable thrusters and are evenly distributed on the outer side of the bottom of the main hull near the middle.

7. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The side thrusters are provided with two, each of which has a power of 2000 to 3000 kilowatts and is located on the outer side of the bottom of the main hull near the bow.

8. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: A maintenance area is also provided next to the stack pipe area.

9. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The total length of the main hull is 210 to 220 meters, the beam is 49 to 50 meters, the depth is 22 to 23 meters, and the draft is 8 to 12 meters.

10. The deepwater crane pipe-laying vessel for the double pipe-laying system at a water depth of 3000 meters according to claim 1, characterized in that: The bow of the main hull is configured as a bulbous bow.

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