CN105298405A - Marine riser suspension joint for typhoon-avoiding evacuation - Google Patents
Marine riser suspension joint for typhoon-avoiding evacuation Download PDFInfo
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- CN105298405A CN105298405A CN201510895662.4A CN201510895662A CN105298405A CN 105298405 A CN105298405 A CN 105298405A CN 201510895662 A CN201510895662 A CN 201510895662A CN 105298405 A CN105298405 A CN 105298405A
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- marine riser
- pipe
- typhoon
- conical pipe
- conical
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Abstract
The invention relates to a marine riser suspension joint for typhoon-avoiding evacuation. The marine riser suspension joint comprises a main pipe and two elastic bodies. The end of the main pipe is provided with a connector, the main pipe is composed of an equal-diameter pipe on the upper portion and a conical pipe on the lower portion, a clamping groove is formed in the equal-diameter pipe, the conical pipe is of a variable-wall-thickness structure, and a disc is arranged outside the conical pipe. The two same elastic bodies are installed on the conical pipe. The end of each elastic body is in a conical shape, and clamping grooves are formed in the elastic bodies respectively. By means of changes of the wall thickness and combination of the elastic bodies, the purposes of lowering the top stress of a marine riser and preventing the marine riser from colliding with a moon pool are achieved, the marine riser suspension joint is simple in structure and easy to install, and the safety of the marine riser in the typhoon-avoiding evacuation process is improved.
Description
Technical field
The invention belongs to deepwater drilling operation technique and equipment field, be specifically related to one keep away typhoon withdraw marine riser hang single.
Background technology
When meeting with violent typhoon in deepwater drilling platform operations process, equipment is caused to destroy for avoiding the impact in center of typhoon or central periphery storm wind district, ensure job safety, need marine riser assembly and blowout preventer set junction bottom it throw off and are recycled to deck, then platform is withdrawn to safety zone.In order to save time and raise the efficiency, marine riser not exclusively reclaims sometimes, and platform directly hangs marine riser to carry out keeping away typhoon and withdraw.Platform hangs marine riser and keeps away in Typhoon Process, and riser top and chuck are rigidly connected, and the motion of offshore boring island is directly delivered to riser top, and riser top response is violent.When adopting that conventional marine riser is single to be hung, easily there is larger stress in riser top, causes marine riser to destroy, and increase the risk that moon pool is collided on marine riser top.Hang marine riser and keep away to improve deepwater drilling platform the operational security that typhoon withdraws, need badly and a kind ofly keep away the marine riser that typhoon withdraws and hang special single.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of structure simple, easy and simple to handle and riser top stress can be effectively reduced and prevent marine riser top from colliding the device of moon pool.
For achieving the above object, the present invention takes following technical scheme: one keep away typhoon withdraw marine riser hang single, it is characterized in that, it comprises supervisor and two elastic bodys, described supervisor end arranges joint, and described supervisor is made up of top equal pipe and lower taper pipe, and described equal pipe inside has draw-in groove, described conical pipe is for becoming wall thickness structure, its outer setting disk; Described two elastic bodys are identical and be installed on conical pipe, and this elastic body end is taper, and its inside has draw-in groove.
Described supervisor is integral type structure.
Described conical pipe internal diameter is constant, and external diameter linearly increases from down to up.
Described two elastic bodys are interconnected radial through bolt, are axially fixed on conical pipe with coordinating of disk by draw-in groove.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention uses on deepwater drilling platform, structure is simple, be connected with marine riser by flange, elastic body end is that taper is convenient to install, do not need special operational instrument and flow process, easy and simple to handle and in emergency circumstances workable.2, because the present invention adopts tapered tube configuration, wall thickness reduces from top to bottom, adapt to riser top variation of stress, elastic body coordinates with universal joint, restriction marine riser upper deformation, therefore, keeping away under typhoon withdraws situation, effectively can reduce the top strain of marine riser, prevent marine riser and moon pool from colliding simultaneously, improve the safety keeping away riser system in typhoon evacuation process.
Accompanying drawing explanation
Fig. 1 is for hanging single half sectional view.
Fig. 2 is for hanging single working state schematic representation.
In figure: 1. upper flange, 2. equal pipe draw-in groove, 3. equal pipe, 4. conical pipe, 5. elastic body, 6. bolt, 7. disk, 8. lower flange, 9. chuck, 10. universal joint through hole, 11. moon pools.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, keep away typhoon when withdrawing, first elastic body 5 is arranged on conical pipe by disk 7 and bolt 6, after recovery section marine riser, need to realize the single connection single with suspension of marine riser by lower flange 8, connected rear marine riser instrument of transferring and coordinated with equal pipe draw-in groove 2, lowering risers coordinates to elastic body 5 external diameter with universal joint through hole 10, equal pipe 3 clamping is on chuck 9, and upper flange 1 is positioned at above chuck 9.After device installation, upper flange 1 diameter is greater than chuck 9 bore, can prevent riser system from falling to a certain extent; Elastic body 5 limits top marine riser lateral deformation, effectively prevents marine riser and moon pool 11 from colliding; Large wall thickness equal pipe 3 and change wall thickness conical pipe 4 structure, greatly reduce riser top stress, and adapt to riser top variation of stress, improve the safety keeping away riser system in typhoon evacuation process.
Claims (4)
1. one kind keep away typhoon withdraw marine riser hang single, it is characterized in that: comprise supervisor and two elastic bodys, described supervisor end arranges joint, described supervisor is made up of top equal pipe and lower taper pipe, described equal pipe inside has draw-in groove, described conical pipe is for becoming wall thickness structure, its outer setting disk; Described two elastic bodys are identical and be installed on conical pipe, and this elastic body end is taper, and its inside has draw-in groove.
2. one is kept away typhoon and is withdrawn marine riser and hang single according to claim 1, it is characterized in that: described supervisor is for integral type structure.
3. according to claim 1 one keep away typhoon withdraw marine riser hang single, it is characterized in that: described conical pipe internal diameter is constant, and external diameter linearly increases from down to up.
4. one is kept away typhoon and is withdrawn marine riser and hang single according to claim 1, it is characterized in that: described two elastic bodys are interconnected radial through bolt, is axially fixed on conical pipe with coordinating of disk by draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895662.4A CN105298405B (en) | 2015-12-07 | 2015-12-07 | One keep away typhoon withdraw marine riser hang single |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895662.4A CN105298405B (en) | 2015-12-07 | 2015-12-07 | One keep away typhoon withdraw marine riser hang single |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105298405A true CN105298405A (en) | 2016-02-03 |
| CN105298405B CN105298405B (en) | 2016-11-16 |
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ID=55196134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510895662.4A Active CN105298405B (en) | 2015-12-07 | 2015-12-07 | One keep away typhoon withdraw marine riser hang single |
Country Status (1)
| Country | Link |
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| CN (1) | CN105298405B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505537A (en) * | 2018-12-25 | 2019-03-22 | 中国海洋石油集团有限公司 | A kind of water proof tube suspension device and hanging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087922A2 (en) * | 1982-02-25 | 1983-09-07 | Amoco Corporation | Multiterminators for riser pipes |
| CN101818627A (en) * | 2010-04-20 | 2010-09-01 | 中国海洋石油总公司 | Safety device of floating drilling platform on sea during typhoon or hurricane |
| CN103122753A (en) * | 2013-01-04 | 2013-05-29 | 中国石油大学(华东) | Near-sea separation and tie-back device for typhoon-resisting drilling risers |
| CN205135444U (en) * | 2015-12-07 | 2016-04-06 | 中国石油大学(华东) | It withdraws marine riser and hangs single to keep away typhoon |
-
2015
- 2015-12-07 CN CN201510895662.4A patent/CN105298405B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087922A2 (en) * | 1982-02-25 | 1983-09-07 | Amoco Corporation | Multiterminators for riser pipes |
| CN101818627A (en) * | 2010-04-20 | 2010-09-01 | 中国海洋石油总公司 | Safety device of floating drilling platform on sea during typhoon or hurricane |
| CN103122753A (en) * | 2013-01-04 | 2013-05-29 | 中国石油大学(华东) | Near-sea separation and tie-back device for typhoon-resisting drilling risers |
| CN205135444U (en) * | 2015-12-07 | 2016-04-06 | 中国石油大学(华东) | It withdraws marine riser and hangs single to keep away typhoon |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505537A (en) * | 2018-12-25 | 2019-03-22 | 中国海洋石油集团有限公司 | A kind of water proof tube suspension device and hanging method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105298405B (en) | 2016-11-16 |
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