CN101832425B - Installation method of underwater tee joint of seabed pipeline - Google Patents
Installation method of underwater tee joint of seabed pipeline Download PDFInfo
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- CN101832425B CN101832425B CN2009100793727A CN200910079372A CN101832425B CN 101832425 B CN101832425 B CN 101832425B CN 2009100793727 A CN2009100793727 A CN 2009100793727A CN 200910079372 A CN200910079372 A CN 200910079372A CN 101832425 B CN101832425 B CN 101832425B
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- tee joint
- pipeline
- pipe section
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Abstract
The invention discloses an installation method of an underwater tee joint of a seabed pipeline, comprising the following steps of: (1) prefabricating a tee joint pipe section welded with rotary flanges at both ends and prefabricating a straight pipe section welded with rotary flanges at both ends, wherein the length of the straight pipe section is equal to the length of the tee joint pipe section; (2) connecting the straight pipe section in the step (1) to a pipeline to be laid and laying the straight pipe section on a seabed; and (3) replacing the straight pipe section in the step (2) on the seabed pipeline by using the tee joint pipe section in the step (2) to accomplish the installation of the underwater tee joint. The installation method of the underwater tee joint of the seabed pipeline has the advantages of less influence on the speed and equipment of pipe laying operations and less difficulty of process realization due to having no need of the construction of a pipe laying ship in the tee joint pipe section replacing operation at the later stage, thereby greatly reducing construction expenses.
Description
Technical field
The present invention relates to a kind of installation method of threeway, particularly relate to a kind of installation method of underwater tee joint of seabed pipeline.
Background technique
Increasing considerably of As China's oil resources consumption, the national energy strategy receives very big challenge, and how economic offshore oil resource, that develop China effectively and quickly receive much concern.At present, laid a large amount of submarine pipelines, how efficiently to have utilized existing submarine pipeline to become the important subject of new oil and gas development in marine site, China Bohai Sea.Through using underwater tee joint, in the seabed newly-built submarine pipeline and existing submarine pipeline are realized being connected, be the effective means that makes full use of existing submarine pipeline.
Summary of the invention
The installation method that the purpose of this invention is to provide a kind of underwater tee joint of seabed pipeline.
The application of underwater tee joint of seabed pipeline; The most important while also is maximum steps of expense input to be exactly underwater tee joint installation connects, if when underwater tee joint is installed, can less influence the normal laying of submarine pipeline; Then can simplify the offshore construction operation, save great amount of investment.For realizing above-mentioned purpose, underwater tee joint of seabed pipeline installation method of the present invention may further comprise the steps:
1) prefabricated two ends are welded with the threeway pipeline section of rotary flange, prefabricated two ends be welded with rotary flange with the isometric straight length of above-mentioned threeway pipeline section;
2) with above-mentioned steps 1) straight length be connected on the pipeline of prepare laying and be routed to the seabed;
3) with the above-mentioned steps 1 on the threeway pipeline section of the above-mentioned step 1) replacement submarine pipeline) straight length, accomplish the installation of underwater tee joint.
The installation method of underwater tee joint of seabed pipeline of the present invention has the following advantages: speed and equipment influence to the tubine operation are less, and later stage threeway pipeline section replacement operation need not the construction of pipe laying barge, and technology realizes that difficulty is little, thereby reduces operating expenses greatly.
Description of drawings
Fig. 1 is prefabricated threeway pipeline section
Fig. 2 is prefabricated isometric straight length
Fig. 3 is the prefabricated installation of isometric straight length on pipe laying barge
Fig. 4 is the location of casting anchor of engineering barge
Fig. 5 is for removing the prefabricated isometric straight length of threeway mounting point point
Fig. 6 is the entry of prefabricated threeway pipeline section
Fig. 7 is the installation of prefabricated threeway pipeline section
Embodiment
The installation of embodiment 1, underwater tee joint of seabed pipeline
Below in conjunction with accompanying drawing the installation of underwater tee joint of seabed pipeline is done and to be specified.
1) the threeway pipeline section is made in the requirement of combination construction drawing in advance, and this threeway pipeline section is two-way logical ball threeway 1, and is connected with ball valve 3, welds rotary flange 2 respectively at the two ends of this threeway pipeline section, and prefabricated threeway pipeline section is shown in Figure 1A and Figure 1B.
2) prefabricated one section two ends be welded with rotary flange equally with above-mentioned steps 1) the isometric straight length of threeway pipeline section, prefabricated isometric straight length is as shown in Figure 2.
3) in the submarine pipeline laid processes, when being applied to threeway mounting point point, at the direct welded flange on water inlet pipe one end of pipeline counterpart station 4 on the pipe laying barge; Do flaw detection, detect a flaw qualified after, with above-mentioned steps 2) rotary flange of prefabricated isometric straight length one end is connected with the flange on the water inlet pipe; Thereafter, move distance of ship, this distance equals above-mentioned steps 2) length of prefabricated isometric straight length; Then at a new end welded flange that gets into the pipeline of main production line 5 near welding station 6; Do flaw detection, detect a flaw qualified after, with this flange and above-mentioned steps 2) rotary flange of the prefabricated isometric straight length the other end is connected; On the pipe laying barge with above-mentioned steps 2) prefabricated isometric straight length is connected on the tubing with flange, then with undersea pipe-laying to the seabed.Above-mentioned steps 2) the prefabricated installation process of isometric straight length on pipe laying barge is as shown in Figure 3.
4) after threeway mounting point point 7 is crossed in the tubine operation; Another engineering barge 8 that is equipped with loop wheel machine, diving gear and setting tool by tugboat 9 towages of coordinative construction to the threeway mounting point point; The towage back that puts in place is assisted the tugboat location of casting anchor according to preset anchor point by the DGPS guiding, shown in Fig. 4 A and Fig. 4 B.Move engineering barge then, make the ship string of engineering barge one side be parallel to submarine pipeline 10, construction equipment equipment etc. is hung onto the construction seabed.
5) diver removes above-mentioned steps 3 at threeway mounting point point) in the prefabricated isometric straight length of installation, as shown in Figure 5.
6) with above-mentioned steps 1) in two ends threeway pipeline section that rotary flange is installed lift point to the threeway mounting point, as shown in Figure 6.
7) the threeway pipeline section replacement above-mentioned steps 3 of rotary flange is installed with the two ends in the above-mentioned step 1)) in be installed in the prefabricated isometric straight length on the submarine pipeline, accomplish the connection under water of threeway pipeline section, as shown in Figure 7.
Claims (1)
1. the installation method of a underwater tee joint of seabed pipeline may further comprise the steps:
1) prefabricated two ends are welded with the threeway pipeline section of rotary flange, prefabricated two ends be welded with rotary flange with the isometric straight length of above-mentioned threeway pipeline section;
2) with above-mentioned steps 1) straight length be connected on the pipeline of prepare laying and be routed to the seabed;
3) with the above-mentioned steps 1 on the threeway pipeline section of the above-mentioned step 1) replacement submarine pipeline) straight length, accomplish the installation of underwater tee joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100793727A CN101832425B (en) | 2009-03-09 | 2009-03-09 | Installation method of underwater tee joint of seabed pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100793727A CN101832425B (en) | 2009-03-09 | 2009-03-09 | Installation method of underwater tee joint of seabed pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101832425A CN101832425A (en) | 2010-09-15 |
| CN101832425B true CN101832425B (en) | 2012-07-04 |
Family
ID=42716592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100793727A Active CN101832425B (en) | 2009-03-09 | 2009-03-09 | Installation method of underwater tee joint of seabed pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832425B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899842B (en) * | 2014-04-23 | 2017-01-11 | 中国海洋石油总公司 | Method for installing deepwater online tee joint |
| CN113464724A (en) * | 2021-06-03 | 2021-10-01 | 海洋石油工程股份有限公司 | Submarine pipeline expansion bend connection method suitable for high-precision underwater in-place control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2015115A (en) * | 1978-02-22 | 1979-09-05 | Raymond Int Builders | Method of installing a pipeline and a pipeline installed by this method |
| GB2082708A (en) * | 1980-08-22 | 1982-03-10 | Petroles Cie Francaise | Process for tapping a pipe conveying a fluid |
| US4335752A (en) * | 1975-11-28 | 1982-06-22 | The Sea Horse Corporation | Flanged pipe |
-
2009
- 2009-03-09 CN CN2009100793727A patent/CN101832425B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335752A (en) * | 1975-11-28 | 1982-06-22 | The Sea Horse Corporation | Flanged pipe |
| GB2015115A (en) * | 1978-02-22 | 1979-09-05 | Raymond Int Builders | Method of installing a pipeline and a pipeline installed by this method |
| GB2082708A (en) * | 1980-08-22 | 1982-03-10 | Petroles Cie Francaise | Process for tapping a pipe conveying a fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101832425A (en) | 2010-09-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Jun Inventor after: Jia Xu Inventor after: Li Xinzhong Inventor after: Hou Jinlin Inventor after: Zhou Xiaohong Inventor after: Fan Mo Inventor after: Xu Yang Inventor after: Luo Shiyong Inventor after: Jiao Bintian Inventor before: Huang Jun |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HUANG JUN TO: HUANG JUN JIA XU LI XINZHONG HOU JINLIN ZHOU XIAOHONG FAN MO XU YANG LUO SHIYONG JIAO BINTIAN |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street CNOOC building Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street CNOOC building Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street CNOOC building Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |