CN115596889A - Method for treating suspended span of deepwater sea pipe - Google Patents
Method for treating suspended span of deepwater sea pipe Download PDFInfo
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- CN115596889A CN115596889A CN202211057449.2A CN202211057449A CN115596889A CN 115596889 A CN115596889 A CN 115596889A CN 202211057449 A CN202211057449 A CN 202211057449A CN 115596889 A CN115596889 A CN 115596889A
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- pipe
- supporting device
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- sea
- sea pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/26—Repairing or joining pipes on or under water
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a method for treating a deep water sea pipe suspended span, which comprises the following steps: s1, carrying out sea pipe span section survey through an ROV (remote operated vehicle), and determining the height and gradient of a sea pipe of a span section; s2, manufacturing a marine vessel supporting device and a mounting bracket according to the height, the gradient and the size of the marine vessel of the suspension span section; s3, assembling and limiting the marine pipe supporting device and the mounting bracket, and integrally hoisting the marine pipe supporting device and the mounting bracket to a marine pipe operation point of the suspension span section; s4, completing the installation work of the marine vessel supporting device through the ROV; s5, completing the recovery work of the mounting bracket through a crane; s6, the sea pipe supporting device keeps the supporting state of the sea pipe of the suspension span section, and suspension span processing is completed. The invention does not need a large amount of seabed processing, does not need the matching of equipment such as a pipe lifting frame and the like, is suitable for the suspension span with slope, is suitable for the sea pipes with different pipe diameters, and greatly improves the processing capacity and the construction efficiency of the sea pipe suspension span.
Description
Technical Field
The invention relates to the technical field of marine pipes, in particular to a method for treating a deep-water marine pipe suspended span.
Background
In the process of laying and subsequent operation of the marine pipeline, due to reasons such as seabed terrain and geology or the long-time scouring process of ocean currents, a suspended section called as a suspended span can appear at the bottom of the marine pipeline, the suspended span which does not meet the design requirements of the marine pipeline can cause damage to the marine pipeline or greatly reduce the service life of the marine pipeline, and the marine pipeline needs to be processed in time so as to meet the design and operation requirements of the marine pipeline.
Disclosure of Invention
The invention aims to provide a method for processing the hanging span of a deepwater sea pipe, which can be used for conveniently processing the hanging span with slope and the hanging span supporting work of the sea pipes with different sizes.
In order to realize the aim of the invention, the invention provides a method for treating the suspended span of a deepwater subsea pipe, which comprises the following steps: s1, carrying out sea pipe suspended span section survey through an ROV (remote operated vehicle), and determining the height and gradient of a sea pipe of a suspended span section;
s2, manufacturing a sea pipe supporting device and a mounting bracket according to the height, the gradient and the size of the sea pipe of the suspended span section;
s3, carrying out assembly limiting installation on the marine pipe supporting device and the installation support, and integrally hoisting the marine pipe supporting device and the installation support to a marine pipe operation point of the suspension span section;
s4, completing the installation work of the sea pipe supporting device through an ROV;
s5, completing the recovery work of the mounting bracket through a crane;
s6, the sea pipe supporting device keeps the supporting state of the sea pipe of the suspension span section, and suspension span processing is completed.
As a preferred technical solution of the present invention, the marine vessel supporting device is adapted to the height and gradient of the marine vessel of the suspended span section and the size of the marine vessel, and the mounting bracket is adapted to the marine vessel supporting device.
As a preferred embodiment of the present invention, the installation work of the marine vessel supporting apparatus includes: s41, observing the conditions of the suspended span supporting device and the seabed by an ROV (remote operated vehicle), and confirming that the device is intact and the construction conditions are allowed; s42, hoisting the sea pipe supporting device and the mounting bracket by using the crane, and integrally and transversely moving the sea pipe supporting device and the mounting bracket to a position right below the sea pipe at the suspension span; s43, operating an adjusting handle of the sea pipe supporting device by the ROV manipulator, and adjusting the supporting height of the lifting sea pipe supporting device through transmission between a screw rod and a connecting rod of the scissor jack mechanism; and S44, lifting the sea pipe supporting device to tightly push the sea pipe, and completing the installation work of the sea pipe supporting device.
As a preferred embodiment of the present invention, the recovering operation of the mounting bracket includes: s51, confirming that the installation work of the marine vessel supporting device is finished by the ROV; s52, the ROV releases the limit connection between the sea pipe supporting device and the mounting bracket; and S53, horizontally moving the crane, pulling away, recovering and installing the support.
As a preferred technical scheme of the invention, in the process of periodic inspection of the marine pipe, if the seabed sinks to cause pressure loss between the marine pipe supporting device and the lower wall of the marine pipe, the ROV manipulator operates the adjusting handle of the marine pipe supporting device to adjust the supporting height of the lifting marine pipe supporting device, so that the marine pipe supporting device tightly supports the marine pipe.
Compared with the prior art, the invention provides a deepwater subsea pipeline suspended span processing method, which has the following beneficial effects:
the invention is convenient for offshore construction, does not need a large amount of seabed treatment, does not need the cooperation of equipment such as a pipe lifting frame and the like, can adapt to the suspension span with slope, and can be suitable for the marine pipes with different pipe diameters.
Drawings
FIG. 1 is a schematic view of the butt joint of a marine pipe support and a mounting bracket assembly according to the present invention;
FIG. 2 is a schematic illustration of the marine vessel support and mounting bracket of the present invention being hoisted into position;
FIG. 3 is a schematic view of the height adjustable mounting of the marine vessel bracing apparatus of the present invention;
FIG. 4 is a schematic view of the marine vessel support and mounting bracket of the present invention with the spacing released;
FIG. 5 is a schematic view of the retraction of the mounting bracket of the present invention.
The device comprises a sea pipe supporting device 1, a mounting bracket 2 and a sea pipe 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 5, an embodiment of the present invention provides a method for treating a deep water subsea pipe suspended span, including the following steps:
s1, surveying a suspended span section of a sea pipe 3 through an ROV (remote operated vehicle), and determining the height and gradient of the sea pipe 3 of the suspended span section;
s2, manufacturing a sea pipe supporting device 1 and a mounting bracket 2 according to the height and gradient of a sea pipe 3 of the suspension span section and the size of the sea pipe 3;
s3, carrying out assembly limiting installation on the marine pipe supporting device 1 and the installation support 2, and integrally hoisting the marine pipe supporting device and the installation support to a marine pipe 3 operation point of a suspension span section;
s4, completing the installation work of the marine vessel supporting device 1 through an ROV;
s5, completing the recovery work of the mounting bracket 2 through a crane;
and S6, the sea pipe supporting device 1 keeps the supporting state of the sea pipe 3 of the suspended span section, and the suspended span processing is completed.
In one embodiment of the invention, the sea chest 1 is adapted to the height and slope of the sea chest 3 of the suspended span section and the size of the sea chest 3, and the mounting bracket 2 is adapted to the sea chest 1.
In one embodiment of the invention, the installation work of the marine vessel supporting device 1 comprises: s41, observing the conditions of the suspended span supporting device and the seabed by the ROV, and confirming that the device is intact and the construction conditions are allowed; s42, hoisting the marine pipe supporting device 1 and the mounting bracket 2 by using a crane, and integrally and transversely moving the marine pipe supporting device and the mounting bracket 2 to a position right below the marine pipe 3 at the suspension span; s43, operating an adjusting handle of the sea pipe supporting device 1 by an ROV (remote operated vehicle) manipulator, and adjusting the supporting height of the lifted sea pipe supporting device 1 through transmission between a screw rod and a connecting rod of the scissor jack mechanism; and S44, lifting the marine pipe supporting device 1 to tightly push the marine pipe 3, and completing the installation work of the marine pipe supporting device 1.
In one embodiment of the invention, the recycling of the mounting bracket 2 comprises: s51, confirming that the installation work of the marine vessel supporting device 1 is finished by the ROV; s52, the ROV releases the limit connection between the marine pipe supporting device 1 and the mounting bracket 2; and S53, horizontally moving the crane to pull out the recovery mounting bracket 2.
In an embodiment of the present invention, during the periodic inspection of the marine pipe 3, if the seabed sinks to cause pressure loss between the marine pipe supporting device 1 and the lower wall of the marine pipe 3, the ROV manipulator operates the adjusting handle of the marine pipe supporting device 1 to adjust and lift the supporting height of the marine pipe supporting device 1, so that the marine pipe supporting device 1 tightly abuts against the marine pipe 3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (5)
1. A method for processing a deep-water sea pipe suspended span is characterized by comprising the following steps:
s1, surveying a suspended span section of a sea pipe (3) through an ROV (remote operated vehicle), and determining the height and the gradient of the sea pipe (3) of the suspended span section;
s2, manufacturing a sea pipe supporting device (1) and a mounting bracket (2) according to the height and gradient of a sea pipe (3) of the suspended span section and the size of the sea pipe (3);
s3, assembling and limiting the sea pipe supporting device (1) and the mounting bracket (2), and integrally hoisting the sea pipe supporting device and the mounting bracket to a sea pipe (3) operation point of the suspension span section;
s4, completing the installation work of the marine vessel supporting device (1) through an ROV;
s5, completing the recovery work of the mounting bracket (2) through a crane;
s6, the supporting state of the submarine pipeline (3) of the suspension span section is kept by the submarine pipeline supporting device (1), and suspension span processing is completed.
2. The deep water sea pipe suspended span processing method of claim 1, characterized in that:
in step S2, the sea pipe support (1) is adapted to the height and slope of the sea pipe (3) of the suspended span section and the sea pipe (3) size, and the mounting bracket (2) is adapted to the sea pipe support (1).
3. The deep water sea pipe suspended span processing method according to claim 1, characterized in that:
in step S4, the installation work of the sea pipe supporting device (1) includes: s41, observing the conditions of the suspended span supporting device and the seabed by the ROV, and confirming that the device is intact and the construction conditions are allowed; s42, hoisting the sea pipe supporting device (1) and the mounting bracket (2) by the crane, and integrally and transversely moving the sea pipe supporting device and the mounting bracket to a position right below the sea pipe (3) at the suspension span; s43, operating an adjusting handle of the marine pipe supporting device (1) by an ROV manipulator, and adjusting the supporting height of the lifting marine pipe supporting device (1) through transmission between a screw rod and a connecting rod of a scissor jack mechanism; s44, lifting the sea pipe supporting device (1) to tightly push the sea pipe (3) to complete the installation work of the sea pipe supporting device (1).
4. The deep water sea pipe suspended span processing method of claim 1, characterized in that:
in step S5, the recovery work of the mounting bracket (2) includes: s51, confirming that the installation work of the marine pipe supporting device (1) is completed by the ROV; s52, the ROV releases the limit connection between the marine pipe supporting device (1) and the mounting bracket (2); s53, the crane is horizontally moved to be pulled away from the recovery mounting bracket (2).
5. The deep water sea pipe suspended span processing method of claim 1, characterized in that:
in the regular inspection process of the marine pipe (3), if the seabed sinks to cause pressure loss between the marine pipe supporting device (1) and the lower wall of the marine pipe (3), the ROV manipulator operates an adjusting handle of the marine pipe supporting device (1), the supporting height of the marine pipe supporting device (1) is adjusted and lifted, and the marine pipe (3) is tightly propped by the marine pipe supporting device (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211057449.2A CN115596889A (en) | 2022-08-29 | 2022-08-29 | Method for treating suspended span of deepwater sea pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211057449.2A CN115596889A (en) | 2022-08-29 | 2022-08-29 | Method for treating suspended span of deepwater sea pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115596889A true CN115596889A (en) | 2023-01-13 |
Family
ID=84842516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211057449.2A Pending CN115596889A (en) | 2022-08-29 | 2022-08-29 | Method for treating suspended span of deepwater sea pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115596889A (en) |
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2022
- 2022-08-29 CN CN202211057449.2A patent/CN115596889A/en active Pending
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Address after: 518051 B2903, CNOOC building, No. 3168, Houhaibin Road, blue coast community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Applicant after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: 518051 B2903, CNOOC building, No. 3168, Houhaibin Road, blue coast community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Applicant before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |