Topside mounted subsea pipeline termination
阅读说明：本技术 舷侧安装的海底管线终端 (Topside mounted subsea pipeline termination ) 是由 尹汉军 孙国民 王长涛 顾永维 张飞 冯现洪 梁辉 孟宪武 石磊 钱思成 杨成鹏 于 2020-03-02 设计创作，主要内容包括：本发明公开了一种舷侧安装的海底管线终端,包括可滑动防沉板、设置在所述防沉板的工艺管线和U型扶正刚臂,所述工艺管线包括生产管线和支管线,所述生产管线的两端分别具有连通收发球筒或系统扩展的第一生产端口、和连通海底管线的第二生产端口,所述生产管线的侧壁连通所述支管线,所述支管线的端部具有连通水下设施的所述支管线端口,所述U型扶正刚臂的两端分别设置于所述工艺管线的两侧,且均与所述防沉板转动连接,本发明采用施工船舷侧施工技术、实现不拆卸原生产流体管线、接入本终端即可实现通球和系统的扩展。(The invention discloses a shipboard-mounted submarine pipeline terminal, which comprises a slidable anti-sinking plate, a process pipeline and a U-shaped centering rigid arm, wherein the process pipeline and the U-shaped centering rigid arm are arranged on the anti-sinking plate, the process pipeline comprises a production pipeline and a branch pipeline, two ends of the production pipeline are respectively provided with a first production port communicated with a ball receiving and sending cylinder or system expansion and a second production port communicated with the submarine pipeline, the side wall of the production pipeline is communicated with the branch pipeline, the end part of the branch pipeline is provided with a branch pipeline port communicated with an underwater facility, two ends of the U-shaped centering rigid arm are respectively arranged on two sides of the process pipeline and are rotatably connected with the anti-sinking plate.)
1. The utility model provides a submarine pipeline terminal of topside installation, its characterized in that includes slidable prevents heavy board, sets up prevent that heavy board's process pipeline, U type right rigid arm and topside connect and hang the device, the process pipeline includes production pipeline and branch pipeline, the both ends of production pipeline have respectively to communicate the first production port of receiving and dispatching a ball section of thick bamboo or system expansion and the second production port of intercommunication submarine pipeline, the lateral wall of production pipeline communicates the branch pipeline, the tip of branch pipeline has the branch line port of intercommunication facility under water, the both ends of U type right rigid arm set up respectively in the both sides of process pipeline, and all with prevent that heavy board rotates to be connected.
2. The side mounted subsea pipeline terminal according to claim 1, wherein a lowering/retrieving lug and at least one lifting lug are fixed to the ends of the anti-sag plate.
3. The topside installed subsea pipeline terminal according to claim 1, wherein said topside hang-off means comprises a primary hang-off point for hang-off guidance and fixation and a secondary hang-off point for support, said primary hang-off point and said secondary hang-off point being welded to said anti-sag plate.
4. The broadside-mounted subsea pipeline termination of claim 1, wherein said anti-sag plate is a flat steel structure without skirt.
5. The topside installed subsea pipeline terminal according to claim 1, wherein a front rigid arm support set and a rear rigid arm support set are secured to said anti-sag plate for supporting said U-shaped centralizing rigid arm in a horizontal position.
6. The side mounted subsea pipeline terminal according to claim 1, wherein the first production port is mounted with a long term pressure cap.
7. The broadside-mounted subsea pipeline terminal of claim 1, wherein an underwater robot docking cradle having a docking slot for connection to an underwater robot is secured to said anti-sink plate.
8. The topside installed subsea pipeline terminal according to claim 1, wherein said anti-heave plate is based on a plurality of anodes fixed thereto, said plurality of anodes being distributed in a matrix.
9. The broadside-mounted subsea pipeline terminal in accordance with claim 1, wherein said anti-sink plate is perforated with a plurality of water permeable holes.
10. The broadside-mounted subsea pipeline termination of claim 1, further comprising an anchor comprising an inner pipe and an outer pipe fixedly sleeved on the inner pipe, the production pipeline and the subsea pipeline being in communication through the inner pipe, the outer pipe being fixedly connected to the anti-settling plate.
Technical Field
The invention relates to the technical field of submarine pipeline terminals, in particular to a shipboard-mounted submarine pipeline terminal.
Background
The underwater production facility is essential and basic equipment in deepwater marine oil and gas development, and has wide application in deepwater oil and gas fields and offshore marginal oil and gas field development in China. The development scheme of the underwater production system is one of the most important development schemes for marine oil and gas development in the future.
The submarine pipeline terminal is used for underwater connection of a submarine pipeline and an underwater production facility at the tail end of the submarine pipeline, realizes gas/liquid process control and conveying, and is widely applied to underwater production systems. In order to meet the process functions required by the submarine pipeline terminal, the submarine pipeline terminal is provided with a valve for controlling the flow of a conveying medium, a connector for connecting external equipment, a bent pipe for meeting the requirement of ball passing, a ball passing tee joint, a structural frame for supporting and protecting the process pipeline and functional equipment, and an anode for providing a cathode protection for an underwater foundation. The existing technology is that the submarine pipeline terminal is installed on line together with a sea pipe through an S-Lay pipe laying ship, the narrow operation line size limits the submarine pipeline terminal pipeline which can be installed and the whole size and weight, and for the large-size submarine pipeline terminal, the scheme of folding and tail assembly of the operation line is needed; because the submarine pipeline expands under the action of high temperature and high pressure of a conveying medium, the submarine pipeline terminal needs to slide to release the expansion amount to avoid buckling of the submarine pipeline; the limited passing capacity of the S-Lay operation line causes that a main body of the submarine pipeline terminal cannot provide a large enough foundation although the main body passes through the operation line, the foundation and the main body are required to be designed and installed in a split mode and connected underwater, and the deep-water underwater connection is difficult to realize due to the limitation of installation accuracy and the influence of ship motion and wave current; the conventional submarine pipeline terminal only has one connector interface, the production fluid and the ball are shared, and the submarine pipeline terminal needs to be disconnected from other equipment when the submarine pipeline terminal is subjected to pigging and intelligent detection, and then is connected to the ball receiving and sending barrel to perform ball passing operation; and system expansion cannot be realized due to only one connector interface. With the gradual reduction of the yield of the main oil-gas field and the discovery of the peripheral oil-gas field, the expansion of a system for realizing the production supplement and stable production is an inevitable requirement. It is therefore essential to design a subsea pipeline terminal that is safe, rational, economical, easy to install and expand.
Disclosure of Invention
The present invention is intended to solve the above technical problems to some extent.
In view of the above, the present invention provides a topside installed subsea pipeline terminal, which uses a construction ship topside construction technology to realize that the subsea pipeline terminal is accessed to realize the expansion of a pass-through ball and a system on the basis of not disassembling an original production fluid line.
In order to solve the technical problem, the invention provides a topside-mounted submarine pipeline terminal, which comprises a slidable anti-sinking plate, a process pipeline arranged on the anti-sinking plate, a U-shaped righting rigid arm and a topside hanging device, wherein the process pipeline comprises a production pipeline and a branch pipeline, two ends of the production pipeline are respectively provided with a first production port communicated with a ball receiving and sending cylinder or system expansion and a second production port communicated with the submarine pipeline, the side wall of the production pipeline is communicated with the branch pipeline, the end part of the branch pipeline is provided with a branch pipeline port communicated with underwater facilities, two ends of the U-shaped righting rigid arm are respectively arranged on two sides of the process pipeline and are both rotatably connected with the anti-sinking plate,
furthermore, the end part of the anti-sinking plate is fixed with a lowering/recovering lug plate and at least one hoisting lug plate.
Furthermore, the broadside hanging device comprises a main hanging point for hanging, guiding and fixing and an auxiliary hanging point for supporting, wherein the main hanging point and the auxiliary hanging point are connected with the anti-sinking plate in a welding mode.
Further, a front rigid arm supporting group and a rear rigid arm supporting group which are used for supporting the U-shaped righting rigid arm in a horizontal state are fixed on the anti-sinking plate.
Further, the second production port is fitted with a long-term pressure cap.
Further, a short-term pressure cap is mounted at the port of the branch pipe line.
Further, an underwater robot docking frame is fixed on the anti-sinking plate, and the underwater robot docking frame is provided with a docking groove for connecting an underwater robot.
Furthermore, a plurality of anodes are fixed on the basis of the anti-sinking plate and are distributed in a matrix manner.
Furthermore, the anti-sinking plate is provided with a plurality of water permeable holes.
The anchoring piece comprises an inner pipe and an outer pipe which is fixedly sleeved on the inner pipe, the production pipeline is communicated with the submarine pipeline through the inner pipe, and the outer pipe is fixedly connected with the anti-sinking plate.
The invention has the technical effects that: (1) the access terminal realizes the ball passing and the system expansion on the basis of not disassembling the original production fluid line.
(2) Overall structure easily installs, effectively reduces the time limit for a project of marine construction, and risk in the greatly reduced installation does benefit to later maintenance and extension simultaneously.
(3) The shipboard marine pipeline structure lowering and installing technology breaks through the limitation of the operation line of the pipe laying ship on the pipe diameter and the whole size of the submarine pipeline terminal, and is suitable for submarine pipeline terminals with various pipe diameters and sizes.
(4) By adopting the design technology of the anti-sinking plate foundation capable of sliding integrally, the one-time installation of the submarine pipeline terminal is realized, the pre-independent installation of the anti-sinking plate and the underwater butt joint and assembly are avoided, the construction period of offshore construction is effectively reduced, and the risk in installation is greatly reduced.
(5) By adopting the design technology of the anti-sinking plate foundation capable of sliding integrally, the one-time installation of the submarine pipeline terminal is realized, the pre-independent installation of the anti-sinking plate and the underwater butt joint and assembly are avoided, the construction period of offshore construction is effectively reduced, and the risk in installation is greatly reduced.
Drawings
FIG. 1 is a perspective view of a side mounted subsea pipeline terminal according to the present invention;
FIG. 2 is a schematic illustration of the internal structure of a side mounted subsea pipeline terminal according to the present invention;
FIG. 3 is a perspective view of a process pipeline of a side mounted subsea pipeline terminal according to the present invention;
FIG. 4 is a schematic illustration of a structure of a spherical pig transceiver of a side mounted subsea pipeline terminal according to the present invention;
FIG. 5 is a schematic view of a first state of a side mounted subsea pipeline termination U-shaped centering rigid arm according to the present invention;
fig. 6 is a schematic view of a second state of a side mounted subsea pipeline termination U-shaped centralizing rigid arm in accordance with the present invention.
Wherein, 1-a slidable anti-sinking plate foundation; 2-main structural frame; 3-process lines; 4-thickening the tube; 5-an anchor member; 6-main hanging points; 7-auxiliary hanging points; 8-a valve protection structure; 9-a connector support structure; a 10-U-shaped righting rigid arm; 11-lowering/recovering the ear plate; 12-lifting the lug plate; 13-underwater robot docking carriage; 14-an anode; 15-a main pipe connector; 16-a bronchial connector; 17-producing a jumper tube; 18-long term pressure cap; 19-a first subsea valve; 20-a second subsea valve; 21-a production line; 22-ball-passing tee; 23-bending the pipe section; 24-branch line; 25-short term pressure cap; 26-water injection cap; 27-water permeable holes; 28-valve operation viewing port; 29-underwater robot handle; 30-underwater robot docking slot; 31-a line support sleeve; 32-front rigid arm support; 33-rear rigid arm support; 34-tieback jumper; 35-underwater ball receiving and sending cylinder.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
As shown in fig. 1, 2 and 3, a shipboard installation submarine pipeline terminal (hereinafter referred to as the present device) comprises a slidable anti-sinking plate and a process pipeline 3 arranged on the anti-sinking plate, wherein the process pipeline 3 comprises a production pipeline 21 and a branch pipeline 24, two ends of the production pipeline 21 are respectively provided with a first production port communicated with a receiving and dispatching ball cylinder or system expansion and a second production port communicated with the submarine pipeline, the side wall of the production pipeline 21 is communicated with the branch pipeline 24, and the end part of the branch pipeline 24 is provided with a branch pipeline port communicated with a newly-built submarine pipeline.
According to the specific embodiment of the invention, the shipboard-mounted submarine pipeline terminal comprises an anti-sinking plate and a process pipeline 3 arranged on the anti-sinking plate, wherein the process pipeline 3 comprises a production pipeline 21, two ends of the production pipeline 21 are respectively a first production port and a second production port, the first production port is communicated with a receiving and transmitting ball barrel or an outlet of a system expansion, and the second production port is communicated with the submarine pipeline; when the pigging treatment is carried out, the pigging balls emitted by the ball receiving and sending cylinder or the system expansion enter the production pipeline 21 from the first production port and are discharged into the submarine pipeline from the second production port; the process pipeline 3 further comprises a branch pipeline 24, the branch pipeline 24 is communicated with the production pipeline 21, the port of the branch pipeline is communicated with the port of the underwater facility, when the pipeline cleaning treatment is not needed, the branch pipeline 24 and one part of the production pipeline 21 realize the intercommunication between the submarine pipeline (the original submarine pipeline) and the newly-built submarine pipeline, the process pipeline has the characteristics of safe, reasonable and economic design and convenience in installation and expansion, the construction period of offshore construction is effectively reduced, the risk in installation is greatly reduced, and meanwhile, the later maintenance and expansion are facilitated.
It should be noted that the branch line 24 is connected to the production line 21, and divides the production line 21 into a first production line 21 section and a second production line 21 section, and each of the first production line 21 section and the second production line 21 section has a first subsea valve 19 and a second subsea valve 20 adapted to a desired production state.
Specifically, the anti-sinking plate comprises a slidable anti-sinking plate foundation 1 and a main
One end of the production pipeline 21 is communicated with a thickened pipe 4; the thickened pipe 4 is a section of pressure-bearing pipeline which is thicker than the production pipeline 21 and connects the sea pipe to the anchoring member 5, which serves as a transition between the production pipeline 21 and the subsea pipeline termination and, in addition, simplifies the construction of the apparatus.
The production pipeline 21 is secured to the main structural frame by the
Specifically, the anchoring member 5 includes an inner pipe and an outer pipe fixedly sleeved on the inner pipe, the production pipeline is communicated with the submarine pipeline through the inner pipe, and the outer pipe is fixedly connected with the main structure frame of the anti-sinking plate.
Specifically, the branch line 24 communicates with the production line 21 through the ball tee 22.
Specifically, two broadside-mounted 2 main hanging points 6 are welded at the rear end of the bottom of a main
Specifically, the end part of the anti-sinking plate is fixed with a lowering/recovering
Further, when the submarine pipeline terminal is in a side-hung state, the A/R cable is tightened, the pulling force is transmitted to the
Specifically, the A/R cable is a cable of an A/R winch.
In addition, the branch pipeline ports can be communicated with other sea pipeline equipment, so that the intercommunication among the submarine pipelines is realized.
As shown in fig. 5 and 6, the topside-installed subsea pipeline terminal further includes a U-shaped centering rigid arm, both ends of the U-shaped centering rigid arm are respectively disposed on both sides of the process pipeline 3, and are both rotatably connected to the anti-sinking plate.
According to the specific embodiment of the invention, the shipboard installation submarine pipeline terminal further comprises a U-shaped righting
Specifically, the lowering/recovering
And a front rigid arm supporting group and a rear rigid arm supporting group which are used for supporting the U-shaped righting
Specifically, the front rigid arm support group and the rear rigid arm support group have the same structure, and the front support steel arm and the rear rigid arm support group are arranged along the length direction of the production pipeline 21.
The preceding supporting steel armset includes supporting arm before first preceding supporting arm and the second, and supporting arm distributes in the both sides of production pipeline 21 before first preceding supporting arm and the second, and the top of supporting arm all has first arc and the second arc that supports the U type and right the rigid arm before first preceding supporting arm and the second, and the
As shown in fig. 3, one side of the second production port of the production pipeline 21 is bent upwards by 90 °, so that multi-directional communication of the subsea pipeline is realized.
In particular, the production line 21 comprises a branch line and a bend section 23 connecting straight sections.
As shown in fig. 1, the second production port is fitted with a long term pressure cap 18, the main pipe connector 15 blocks the long term pressure cap 18 and the second subsea valve 20 is closed to provide a two-stage shut-off between the production fluid and the environment. The branch pipe ports are provided with branch pipe connectors 16, the branch pipe connectors 16 are connected with production jumper pipes 17 to be connected with production fluid, and the flow of the fluid is controlled by controlling an underwater valve 19, so that the stability of the equipment is ensured.
Specifically, when a pigging operation or an intelligent detection operation is required, the long-term pressure cap 18 on the main pipe connector 15 is removed, the underwater ball receiving and sending barrel 35 is connected, and the underwater valve 20 is opened to perform a sea pipe ball passing operation.
When the existing underwater production system needs to be expanded, the long-term pressure cap 18 on the main pipe connector 15 is removed, and the production fluid of the newly-built underwater production system is connected to the main pipe connector 15 through the tieback jumper pipe 34, so that the tieback of the newly-built underwater production system is realized;
specifically, valve protection structures 8 are arranged above the first underwater valve 19 and the second underwater valve 20, and the valve protection structures 8 are welded on a dust guard plate to prevent falling objects and impacts from damaging the valves; the valve protection structure 8 comprises a protection plate and a protection plate connecting rod, the protection plate is connected with the anti-sinking plate through the protection plate connecting rod, and the top plate is provided with a valve
In particular, the exterior of the main pipe connector 15 and the branch pipe connector 16 are connected to the anti-sink plate by means of the support structure 9.
As shown in fig. 5, the branch line 24 is ported with a short-term pressure cap 25 to ensure the stability of the apparatus.
As shown in fig. 1 and 2, the end of the anti-sink plate is fixed with a lowering/retrieving
As shown in fig. 2, an underwater
According to the specific embodiment of the invention, 2 underwater
As shown in fig. 1, a plurality of anodes 14 are fixed on each anti-sinking plate foundation 1, and the plurality of anodes 14 are distributed in a matrix form, so as to provide anti-corrosion protection for the submarine pipeline terminal within the designed service life.
As shown in fig. 2, the anti-sinking plate is provided with a plurality of water
In addition, the connector and the pipeline in the equipment are respectively a submersible connector and a lining corrosion-resistant alloy metallurgical composite pipe, and the equipment has the characteristics of being suitable for the development of marine oil and gas fields with various fluid media with water depth, temperature, pressure and corrosiveness.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
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