KR20150010290A - Method for mounting a pipeline of Offshore Platforms - Google Patents

Method for mounting a pipeline of Offshore Platforms Download PDF

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Publication number
KR20150010290A
KR20150010290A KR20130085089A KR20130085089A KR20150010290A KR 20150010290 A KR20150010290 A KR 20150010290A KR 20130085089 A KR20130085089 A KR 20130085089A KR 20130085089 A KR20130085089 A KR 20130085089A KR 20150010290 A KR20150010290 A KR 20150010290A
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KR
South Korea
Prior art keywords
pipeline
pipe
barge
submarine pipe
moving
Prior art date
Application number
KR20130085089A
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Korean (ko)
Inventor
김보영
Original Assignee
현대중공업 주식회사
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Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR20130085089A priority Critical patent/KR20150010290A/en
Publication of KR20150010290A publication Critical patent/KR20150010290A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/03—Pipe-laying vessels
    • 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
    • F16L1/12—Laying or reclaiming pipes on or under water
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

A pipeline installation method of an offshore platform is disclosed. A method of installing a pipeline of an offshore platform according to an embodiment of the present invention includes: a submarine pipe moving step of moving a submarine pipe installed on the sea floor to a side of a barge; A first pipeline setting step of moving a first pipeline connected to an end of the submarine pipe to a position where the submarine pipe is lifted and setting a connection position; A second pipeline setting step of providing a second pipeline connected to an end of the first pipeline and having an upper end located on the water surface; And a pipeline descending step of descending the welded undersea pipe and the first and second pipelines to the sea floor.

Figure P1020130085089

Description

[0001] The present invention relates to a method for installing a pipeline of an offshore platform,

The present invention relates to a method and apparatus for transferring a gas or oil produced in a plant facility to a shore- The present invention relates to a pipeline installation method for an offshore platform for lifting a submerged pipe on a water surface without welding, welding the pipe to the ceiling on the water surface, and moving the pipe to the sea floor to install the pipeline.

Generally, at sea, oil or gas buried in the sea floor is drilled through various plant equipments or equipments, and the oil or gas is transferred to the land through a submarine pipe installed on the sea floor.

The submarine pipe must undergo an underwater welding operation in which an operator moves in the water to connect the submarine pipe to the pipeline extending toward the self and connects the submarine pipe and the extended pipeline to each other, The welding cost due to underwater welding (related underwater welding equipment, welder mobilization and incidental costs) is excessively increased.

Korean Patent Publication No. 10-2009-0118466 (Published on November 18, 2009)

Embodiments of the present invention are intended to carry out the welding position of a subsea pipe to which gas or oil produced in the plant facility is transported, on the side of the barge and on the water surface of the rear side rather than in the sea bottom.

According to an aspect of the present invention, there is provided a method of moving a submarine pipe installed on a seabed to a side of a barge; A first pipeline setting step of moving a first pipeline connected to an end of the submarine pipe to a position where the submarine pipe is lifted and setting a connection position; A second pipeline setting step of providing a second pipeline connected to an end of the first pipeline and having an upper end located on the water surface; And a pipeline descending step of descending the welded undersea pipe and the first and second pipelines to the sea floor.

The submarine pipe moving step moves the submarine pipe to the side of the barge line using a plurality of cranes installed along the longitudinal direction of the barge line, and then adjusts the position.

The pipeline installation method of the maritime platform comprises the steps of: installing a first platform for welding the bottom pipe and the first pipeline; And installing a second platform to weld the first pipeline and the second pipeline.

The first pipeline setting step includes welding the underside pipe and the first pipeline moved above the barge to each other.

The second pipeline setting step includes welding the first pipeline and the second pipeline to each other.

Embodiments of the present invention can easily perform welding work on the side or rear side surface of a barge rather than underwater in a submarine pipe installed on the sea floor, thereby ensuring worker safety and improving workability, thereby realizing more economical work And the cost of operation is reduced.

1 is a flowchart illustrating a pipeline installation method of a marine platform according to an embodiment of the present invention;
FIGS. 2 to 5 are views illustrating a use state of a pipeline installation method of a marine platform according to an embodiment of the present invention;

A pipeline installation method of a marine platform according to an embodiment of the present invention will be described with reference to the drawings.

1 to 5, a method of installing a marine platform pipeline according to an embodiment of the present invention includes a submarine pipe moving step of moving a submarine pipe 10 installed on a seabed to a side of a barge 2 A first pipeline 20 (1 st spool or horizontal spool) to be connected to an end of the submarine pipe 10 is moved to a lifted position and a first pipeline 20 A pipeline setting step ST200 and a second pipeline 30 connected to an end of the first pipeline 20 and having an upper end positioned out of the water surface (2 nd spool, riser spool + custom extension spool) A second pipeline setting step ST300; And a pipeline descending step ST400 for moving the subsea pipe 10 and the first and second pipelines 20 and 30 lowered to the water surface in the setting (welding completed state).

A plurality of cranes (3) are installed along the longitudinal direction of the barge (2) according to an embodiment of the present invention. The crane (3) has a specification capable of lifting a weight of at least tens of tons or more, In order to move the pipe 10 to the upper side of the barge line 2, before the bottom pipe 10 is moved to the upper side of the barge line 2, the diver is moved to the submarine pipe 10 by a separate lifting operation The movement to the subsea pipe 10 is performed. For reference, a daylift crane is used for the crane but it is not necessarily limited to the crane.

The submarine pipe moving step ST100 adjusts the position of the submarine pipe 10 by moving the submarine pipe 10 to the upper side of the barge line using a plurality of cranes 3 installed along the longitudinal direction of the barge line 2, The reason why the pipe 10 is moved to the upper side of the barge 2 is that there is a problem that the welding worker takes a lot of risk of safety accident and various work hours in the case of underwater work, The submarine pipe 10 is moved to the upper side of the water rather than underwater to perform the operation.

5, the underside pipe 10 is provided with a winch motor (not shown) mounted on the plurality of cranes 3 while maintaining the S shape of the side surface of the underside pipe lifted so as to prevent breakage when the barge 2 is moved to the barge 2, Since the rotation state of the winch motor is controlled at different speeds, the submarine pipe 10 is first lifted at the rear portion of the barge 2, Is maintained.

The method of installing a pipeline of a platform according to an embodiment of the present invention includes a step ST110 of installing a first platform 40 to be welded to a bottom pipe 10 and a first pipeline 20, And installing a second platform 50 on which welding of the pipeline 20 and the second pipeline 30 is to be performed (ST120).

The first and second platforms 40 and 50 provide spaces in which at least two workers can work, so that the subsea pipe 10 and the first and second pipelines 20 and 30 can be more stably welded to each other Provide space. In addition, since various tools and equipment necessary for welding can be easily moved from the barge 2, workability and work efficiency of the worker can be further improved.

Since the first pipeline 10 according to the embodiment of the present invention extends in the opposite directions to each other as shown in the figure, the mounting positions of the first and second platforms 40 and 50 are also different from each other Respectively. For example, the first platform 40 of the present invention is installed on the side of the rear side of the barge 2 and the second platform 50 is installed on the rear side of the barge 2.

It is noted that the first and second platforms 40 and 50 can be installed directly in the field and can be transformed into an oceanside form for structural safety in this case.

The first pipeline setting step ST200 according to an embodiment of the present invention is a method of setting the first pipeline 20 by placing the first pipeline 20 on the first and second platforms 40 and 50 using the main crane installed on the barge 2 Thereafter, it is necessary to confirm once again the foreign matter and the damaged state with respect to the portion to be welded with the undersea pipe 10, and confirm whether stable welding is possible.

The second pipeline setting step ST300 according to an embodiment of the present invention adjusts the position of the second pipeline 30 installed vertically toward the upper side of the water surface using the main crane installed on the barge 2 And welding is performed after adjustment of the position with respect to the first pipeline 20 seated on the second platform 50.

The first pipeline 20 is mounted on the first and second platforms 40 and 50 in a horizontal state and the second pipeline 30 is installed vertically with respect to the first pipeline 20, (Customized extension spool) is pre-welded at the beginning and a plurality of pipes are secured at the point where the second pipeline is seated in the recess 4 to fix the position of the second pipeline 30 in the vertical state To fix the pipe line clamp.

1, the welding is first performed with the bottom pipe 10 and the first pipeline 20, and the first pipeline 20 and the second pipeline 30 are welded in ST300. In this case, since work is performed on the first and second platforms 40 and 50, which are not underwater, work can be performed more safely and quickly. For reference, one side of the second pipeline 30 is welded horizontally to the end of the first pipeline 20, and the other side is directed to a vertical top (water surface).

The pipeline descending step ST400 according to an embodiment of the present invention uses the main crane installed on the barge 2 when the above described subsea pipe 10 and the first and second pipelines 20 and 30 are welded together And is lowered toward the sea floor in the arrow direction. At this time, the second pipeline 30 is manufactured to be seated vertically to the recess 4, and is finally fixedly installed with a riser clamp pre-installed on the recess 4.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

2: Barge
3: Davit Crane
4: Now? (Jacket)
10: Subsea pipe
20: 1st pipeline (1 st Spool)
30: 2nd pipeline (2 nd spool, Riser spool + custom extension spool)
40: First platform
50: Second platform

Claims (5)

As an installed method of subsea piping for transporting the products produced on offshore platforms to the land,
A submarine pipe moving step of moving the submarine pipe installed on the sea floor to the side of the barge;
A first pipeline setting step of moving a first pipeline connected to an end of the submarine pipe to a position where the submarine pipe is lifted and setting a connection position;
A second pipeline setting step of providing a second pipeline connected to an end of the first pipeline and having an upper end located on the water surface; And
And a pipeline descending step of descending the welded underside pipe and the first and second pipelines to the sea floor. The method according to claim 1,
The submarine pipe moving step includes:
Wherein the submarine pipe is moved to a side of the barge using a plurality of cranes installed along the longitudinal direction of the barge, and then the position is adjusted. The method according to claim 1,
The pipeline installation method of the marine platform includes:
Installing a first platform to weld the underside pipe and the first pipeline;
And installing a second platform to weld the first pipeline and the second pipeline. The method according to claim 1,
Wherein the first pipeline setting step comprises:
And welding the underside pipe and the first pipeline moved above the barge to each other. The method according to claim 1,
Wherein the second pipeline setting step comprises:
And welding the first pipeline and the second pipeline to each other.
KR20130085089A 2013-07-19 2013-07-19 Method for mounting a pipeline of Offshore Platforms KR20150010290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130085089A KR20150010290A (en) 2013-07-19 2013-07-19 Method for mounting a pipeline of Offshore Platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130085089A KR20150010290A (en) 2013-07-19 2013-07-19 Method for mounting a pipeline of Offshore Platforms

Publications (1)

Publication Number Publication Date
KR20150010290A true KR20150010290A (en) 2015-01-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109356184A (en) * 2018-11-23 2019-02-19 广州市城市规划勘测设计研究院 A kind of cross a river Duan Fanhong culvert Immersed tunnel method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109356184A (en) * 2018-11-23 2019-02-19 广州市城市规划勘测设计研究院 A kind of cross a river Duan Fanhong culvert Immersed tunnel method

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