CN103935477A - Connecting device for deepwater FPSO rotating tower and rigid stand pipe - Google Patents
Connecting device for deepwater FPSO rotating tower and rigid stand pipe Download PDFInfo
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- CN103935477A CN103935477A CN201410145592.6A CN201410145592A CN103935477A CN 103935477 A CN103935477 A CN 103935477A CN 201410145592 A CN201410145592 A CN 201410145592A CN 103935477 A CN103935477 A CN 103935477A
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Abstract
The invention relates to a connecting device for a deepwater FPSO rotating tower and a rigid stand pipe. The connecting device for the deepwater FPSO rotating tower and the rigid stand pipe is characterized by comprising a flexible stand pipe, an I-type pipe, a supporting block, a centering device and a bending stopping device. Through the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe, the rigid stand pipe at low cost can be directly connected to the FPSO rotating tower, the selection of production pipes of FPSOs operating in deepwater areas is not limited to single-top stretching stand pipes, composite stand pipe towers and flexible stand pipes which are extremely high in cost any more, the technical requirements for the connectors of the stand pipe of the FPSO rotating tower are lowered, and cost is lowered to a certain extent. Even though the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe is designed for the FPSO rotating tower, the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe can also be popularized to connection of other types of offshore floating type structures and rigid stand pipes, and therefore, the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe can be widely applied to the fields of deep sea engineering and deep sea oil and gas resource development.
Description
Technical field
The present invention relates to a kind of connecting device, particularly about the connecting device of a kind of deep water FPSO (Floating Production Storage and Offloading, floating production storage offloading) capstan head and rigidity standpipe.
Background technology
FPSO with its complete extra large formula operation, marine site strong adaptability, can permanent mooring, large, the transferable repeated usage of storage power, the advantage such as construction/repacking cycle is short, expense is cheap and investment repayment is fast, in world's exploitation of offshore oil and gas, be used widely, become the main flow facility that offshore oil and gas is produced.Along with Offshore Oil Industry is to the expansion in deep water field and the exploitation of marginal oil field, all the potential market of FPSO and wide development space will bred.FPSO possesses large-scale oil storage capacity and higher stability conventionally, but because the waterplane of FPSO is larger, all can there is larger motion response at wave energy spectrum period range (3 seconds～25 seconds) and the slow period range (>50 second) changing in it therefore.Therefore, the motion characteristics of FPSO is had higher requirement to the design of its riser systems.
Along with marine oil and gas development of resources activity is constantly to deep-water developments, the riser systems of FPSO capstan head is increasing at the shared proportion of oil and gas development productive costs.At present at conceptual phase, the standpipe type being connected with FPSO capstan head in deep water field comprises: single top stretching standpipe (Single Top-Tensioned Riser, STTR), composite riser tower (Riser Tower, RT), compliant riser (Flexible Riser, and steel vertical line standpipe (Steel CatenaryRiser, SCR) etc. FR).
The flexibility jump pipe of single top stretching standpipe/composite riser tower is directly connected with FPSO capstan head, flexible jump Guan Yiqi length is shorter, liquid in pipe is less, reduce the load to FPSO, therefore obtain the popularization of certain limit at the deep water sea area of FPSO capstan head, but because it involves great expense, be difficult to spread and use.Compliant riser also involves great expense with it, is difficult to spread and uses.Although rigidity standpipe is comparatively economical and practical, use rigidity standpipe directly to connect FPSO capstan head, can cause the stem joint of FPSO capstan head to bear larger load, cause stem joint to occur serious fatigue damage, bring risk to system.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the connecting device of a kind of deep water FPSO capstan head and rigidity standpipe.
For achieving the above object, the present invention takes following technical scheme: the connecting device of a kind of deep water FPSO capstan head and rigidity standpipe, is characterized in that: it comprises that a compliant riser, an I type pipe, a back-up block, a centralizer and stop bent device; The two ends of described compliant riser are provided with flange, and the upper end of described compliant riser is fastenedly connected FPSO capstan head by flange, and lower end is fastenedly connected described rigidity standpipe by flange; Described I type pipe box is located at the top of described compliant riser, and its two ends are also provided with flange, and the upper end of described I type pipe is rigidly connected by flange and FPSO capstan head; Described back-up block is set between described compliant riser and the upper flanges of described I type pipe; In described I type pipe, be arranged at intervals with some circular grooves, described centralizer is set on described compliant riser and corresponding being arranged in the circular groove of described I type pipe; Described to stop bent device be one to be set in the reverse frustoconic elastic rubber pipe on the described compliant riser of described I type pipe lower end, and the outer tube wall of described compliant riser and the described inner tubal wall that stops bent device fit; The lower end that described upper end of stopping bent device carries flange arrangement and be fastenedly connected described I type pipe by it, described lower end of stopping bent device fixes on described compliant riser outer tube wall.
In described I type pipe, interval arranges two circular grooves.
Described back-up block and described centralizer are hollow elasticity rubber ring.
Described rigidity standpipe adopts steel vertical line standpipe.
Described FPSO capstan head is by multiple these connecting devices multiple described rigidity standpipes that connect one to one.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention adopts, between FPSO capstan head and rigidity standpipe, a compliant riser is set, and outside compliant riser sheathed I type pipe, thereby effectively avoid rigidity standpipe and be connected FPSO capstan head and be directly connected and cause the stem joint of FPSO capstan head to bear larger load problem, and be rigidly connected by I type pipe and FPSO capstan head, thereby the present invention is fixed on FPSO capstan head.2, the present invention adopts in I type pipe lower end and arranges and stop bent device, to increase the bending stiffness between compliant riser and I type pipe, thereby reduces the flexure stress of compliant riser and I type pipe junction, improves the fatigue life of compliant riser herein.Not only lower-cost rigidity standpipe directly can be connected on FPSO capstan head by the present invention, make the selection of the FPSO production riser of deep water waters operation no longer be confined to cost high single top stretching standpipe, composite riser tower and compliant riser, and reduced the technical requirements of the stem joint to FPSO capstan head, reduce to a certain extent cost.Although in being connected of the offshore floating type structure that the present invention for FPSO capstan head design, can also be generalized to other form and rigidity standpipe.Therefore, the present invention can be widely used in deep-sea engineering and deep-sea oil gas development of resources field.
Brief description of the drawings
Fig. 1 is application state schematic diagram of the present invention
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes compliant riser 1, I type pipe 2, back-up block 3, centralizer 4 and stop bent device 5.
Wherein, the two ends of compliant riser 1 are provided with flange, and the upper end of compliant riser 1 is fastenedly connected FPSO capstan head 6 by flange, and lower end is fastenedly connected rigidity standpipe 7 by flange, to the oil gas in rigidity standpipe 7 is transported in FPSO capstan head 6 by compliant riser 1.I type pipe 2 is set in the top of compliant riser 1, and its two ends are also provided with flange, and the upper end of I type pipe 2 is rigidly connected by flange and FPSO capstan head 6, to ensure the vertical FPSO of the connection capstan head 6 of compliant riser 1, is convenient to carry oil gas.Back-up block 3 is set between compliant riser 1 and the upper flanges of I type pipe 2, for the direct effect power between buffering flexible standpipe 1 and I type pipe 2, avoids the direct effect of the two and the structural damage that causes.In I type pipe 2, be arranged at intervals with some circular grooves, centralizer 4 is set on compliant riser 1 and corresponding being arranged in the circular groove of I type pipe 2, so that the position of fixing flexible standpipe 1 in I type pipe 2, prevents collision and friction between compliant riser 1 and I type pipe 2.Stop bent device 5 and be a reverse frustoconic elastic rubber pipe being set on the compliant riser 1 of I type pipe 2 lower ends, the outer tube wall of compliant riser 1 fits with the inner tubal wall that stops bent device 5.The upper end of stopping bent device 5 carries flange arrangement and is fastenedly connected the lower end of I type pipe 2 by it, the lower end of stopping bent device 5 fixes on compliant riser 1 outer tube wall, for increasing the bending stiffness between compliant riser 1 and I type pipe 2, to reduce the flexure stress of compliant riser 1 and I type pipe 2 junctions, improve the fatigue life of compliant riser 1 herein.
In above-described embodiment, back-up block 3 and centralizer 4 are hollow elasticity rubber ring.Rigidity standpipe 7 adopts steel vertical line standpipe.
In above-described embodiment, I type pipe 2 interior intervals arrange two circular grooves.
In above-described embodiment, FPSO capstan head 6 can be by some above-mentioned connecting devices several rigidity standpipes 7 that connect one to one.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connection mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (7)
1. a connecting device for deep water FPSO capstan head and rigidity standpipe, is characterized in that: it comprises that a compliant riser, an I type pipe, a back-up block, a centralizer and stop bent device;
The two ends of described compliant riser are provided with flange, and the upper end of described compliant riser is fastenedly connected FPSO capstan head by flange, and lower end is fastenedly connected described rigidity standpipe by flange; Described I type pipe box is located at the top of described compliant riser, and its two ends are also provided with flange, and the upper end of described I type pipe is rigidly connected by flange and FPSO capstan head; Described back-up block is set between described compliant riser and the upper flanges of described I type pipe; In described I type pipe, be arranged at intervals with some circular grooves, described centralizer is set on described compliant riser and corresponding being arranged in the circular groove of described I type pipe; Described to stop bent device be one to be set in the reverse frustoconic elastic rubber pipe on the described compliant riser of described I type pipe lower end, and the outer tube wall of described compliant riser and the described inner tubal wall that stops bent device fit; The lower end that described upper end of stopping bent device carries flange arrangement and be fastenedly connected described I type pipe by it, described lower end of stopping bent device fixes on described compliant riser outer tube wall.
2. the connecting device of a kind of deep water FPSO capstan head as claimed in claim 1 and rigidity standpipe, is characterized in that: in described I type pipe, interval arranges two circular grooves.
3. the connecting device of a kind of deep water FPSO capstan head as claimed in claim 1 and rigidity standpipe, is characterized in that: described back-up block and described centralizer are hollow elasticity rubber ring.
4. the connecting device of a kind of deep water FPSO capstan head as claimed in claim 2 and rigidity standpipe, is characterized in that: described back-up block and described centralizer are hollow elasticity rubber ring.
5. a kind of deep water FPSO capstan head as claimed in claim 1 or 2 or 3 or 4 and the connecting device of rigidity standpipe, is characterized in that: described rigidity standpipe adopts steel vertical line standpipe.
6. a kind of deep water FPSO capstan head as claimed in claim 1 or 2 or 3 or 4 and the connecting device of rigidity standpipe, is characterized in that: described FPSO capstan head is by multiple these connecting devices multiple described rigidity standpipes that connect one to one.
7. the connecting device of a kind of deep water FPSO capstan head as claimed in claim 5 and rigidity standpipe, is characterized in that: described FPSO capstan head is by multiple these connecting devices multiple described rigidity standpipes that connect one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145592.6A CN103935477B (en) | 2014-04-11 | 2014-04-11 | Connecting device for deepwater FPSO rotating tower and rigid stand pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145592.6A CN103935477B (en) | 2014-04-11 | 2014-04-11 | Connecting device for deepwater FPSO rotating tower and rigid stand pipe |
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| Publication Number | Publication Date |
|---|---|
| CN103935477A true CN103935477A (en) | 2014-07-23 |
| CN103935477B CN103935477B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410145592.6A Active CN103935477B (en) | 2014-04-11 | 2014-04-11 | Connecting device for deepwater FPSO rotating tower and rigid stand pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10597952B2 (en) | 2017-03-09 | 2020-03-24 | Single Buoy Moorings, Inc. | Steel catenary riser top interface |
Citations (6)
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| US4955310A (en) * | 1988-12-08 | 1990-09-11 | Jack Pollack | Bearing arrangement for single point terminal |
| US20030121465A1 (en) * | 2001-12-28 | 2003-07-03 | Fmc Technologies, Inc | Large diameter mooring turret with compliant deck and frame |
| CN2736251Y (en) * | 2004-01-20 | 2005-10-26 | 天津市海王星海上工程技术有限公司 | Anti-ice single anchor leg type anchoring system |
| CN101336190A (en) * | 2006-01-03 | 2008-12-31 | 蓝水能源服务有限公司 | Disconnectable mooring system for a vessel |
| CN103442979A (en) * | 2011-02-01 | 2013-12-11 | 塞万海洋股份有限公司 | Production unit having a ballastable rotation symmetric hull and a moonpool |
| CN203921145U (en) * | 2014-04-11 | 2014-11-05 | 中国海洋石油总公司 | The connecting device of deep water FPSO capstan head and rigidity standpipe |
-
2014
- 2014-04-11 CN CN201410145592.6A patent/CN103935477B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955310A (en) * | 1988-12-08 | 1990-09-11 | Jack Pollack | Bearing arrangement for single point terminal |
| US20030121465A1 (en) * | 2001-12-28 | 2003-07-03 | Fmc Technologies, Inc | Large diameter mooring turret with compliant deck and frame |
| CN2736251Y (en) * | 2004-01-20 | 2005-10-26 | 天津市海王星海上工程技术有限公司 | Anti-ice single anchor leg type anchoring system |
| CN101336190A (en) * | 2006-01-03 | 2008-12-31 | 蓝水能源服务有限公司 | Disconnectable mooring system for a vessel |
| CN103442979A (en) * | 2011-02-01 | 2013-12-11 | 塞万海洋股份有限公司 | Production unit having a ballastable rotation symmetric hull and a moonpool |
| CN203921145U (en) * | 2014-04-11 | 2014-11-05 | 中国海洋石油总公司 | The connecting device of deep water FPSO capstan head and rigidity standpipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10597952B2 (en) | 2017-03-09 | 2020-03-24 | Single Buoy Moorings, Inc. | Steel catenary riser top interface |
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| CN103935477B (en) | 2017-02-08 |
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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. Co-patentee after: Outai Department (Tianjin) Ocean Engineering Technology Co. Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Outai Department (Tianjin) Ocean Engineering Technology Co. Ltd. |
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Effective date of registration: 20191212 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, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC research institute limited liability company Patentee before: China Offshore Oil Group Co., Ltd. Co-patentee before: Otaike (Tianjin) Deep Sea Engineering Technology Co., Ltd. |