CN1195053A - Offshore structure for extreme water depth - Google Patents
Offshore structure for extreme water depth Download PDFInfo
- Publication number
- CN1195053A CN1195053A CN97104598A CN97104598A CN1195053A CN 1195053 A CN1195053 A CN 1195053A CN 97104598 A CN97104598 A CN 97104598A CN 97104598 A CN97104598 A CN 97104598A CN 1195053 A CN1195053 A CN 1195053A
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- China
- Prior art keywords
- boring tower
- pedestal
- pile foundation
- sleeve
- marine structure
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Abstract
An off shore structure that utilizes a central tower that is wholly or partly supported by pilings external to the tower and a template on the sea floor. The central tower is attached to a pre-installed template on the sea floor. Sleeves attached to cantilevers that extend from the central tower each receive and are attached to a piling that is driven into the sea floor. The pilings extend up from the sea floor to approximately mid-height of the central tower and are preferably below elevation of the wave affected zone. Environmental forces are mainly resisted by the pilings. Only a small proportion of the environmental and other forces are transferred directly to the template.
Description
The present invention relates generally to the technology of offshore drilling and recover petroleum or mineral matter, relates to particularly by pile foundation anchoring fixed buildings on the throne.
In the well drilling industry, generally all adopt a kind of fixed buildings at sea such as overcoat or boring tower.This overcoat or boring tower usually by through the supporting leg of building, may be also through the pedestal of settling boring tower and fixing on the throne by the pile foundation of squeezing into the seabed.Exploitation and excavation oil and mineral matter need higher boring tower in deep water.Bigger boring tower has higher manufacturing cost, and need be with the equipment that has increased elevating capacity and weight enabling capabilities to adapt to the additional weight of big boring tower.May also there be stability problem in bigger boring tower in installation process.
The present invention is intended to address the above problem.The invention provides a kind of marine structure, it has adopted a center boring tower, and it is whole or in part by pile foundation that is positioned at the boring tower outside and the base supports that is positioned at the seabed.The center boring tower is installed on the seabed on the preassembled pedestal.Being installed in sleeve on the semi girder that stretches out from the center boring tower holds separately and is installed to a pile foundation squeezing into the seabed.This pile foundation reaches near half waist of center boring tower and preferably is lower than the height of wave influence area from the seabed.Advocate to be resisted by pile foundation in the external world.The center boring tower only with a fraction of extraneous power and other force transmission to pedestal.
In order further to understand characteristics of the present invention and purpose, should do following description in conjunction with the accompanying drawings, parts identical among the figure are illustrated by same numeral, wherein:
Fig. 1 is vertical view of the present invention;
Fig. 2 is vertical view of the present invention, and a tubular structure that is used for the center boring tower is wherein arranged;
Fig. 3 is vertical view of another embodiment of the present invention;
Fig. 4 is the sectional view on the top of building shown in Fig. 3;
Fig. 5 A-5D shows the installation process that adopts a marine structure of the present invention;
Fig. 6-the 8th is installed to a pile foundation sectional view of the another kind of device on the marine structure;
Fig. 9 is a sectional view, shows the mechanical fastener that can be used between pile foundation and sleeve or the pedestal;
Figure 10 is the view along Fig. 9 center line 10-10.
Referring to accompanying drawing, visible total the illustrating of the present invention among Fig. 1 by label 10.Marine structure 10 comprises pedestal 12, center boring tower 14, platform 16 and pile foundation 18 substantially.
For but be convenient for reference and describe, platform 16 should be understood to refer to all devices that held on the center boring tower 14.These equipment comprise a rig 30, crane 32 equipment relevant with drilling well and production operation with other substantially.As seen from the figure, boring tower 14 has one section enough distance above the water surface 34, makes platform 16 be in wave elevation-over maximum under the normal condition.
Pile foundation 18 is tubuloses, and to be widely known by the people in the industry be to be used for squeezing into seabed 20 so that overcoat or pedestal are fixed in the seabed through overcoat supporting leg or pedestal.
The tubulose boring tower 14 that sectional view among Fig. 4 shows among Fig. 2 may have a plurality of gas ballasting jars 54, oil storage tank 56 and surge guard device 58.
Fig. 5 A-5D shows installation process of the present invention.In Fig. 5 A, pedestal 12 has been positioned at seabed 20 and fixing on the throne by basis 36, and these bases can be pile foundations.As seen, flatboat 38 is used for boring tower 14 is placed on the position that should locate on the pedestal 12 among Fig. 5 B.In Fig. 5 C, pile foundation 18 has installed through sleeve 28 and has forged installation in position by various suitable manner on basis 36 as grouting or machinery.In Fig. 5 D, platform 16 has been installed in the top of boring tower 14.
Fig. 6-8 shows and can be used for pile foundation 18 is installed to variety of way on the sleeve 28.Fig. 6 shows the use of grouting way, and wherein mud 40 is pumped into the annular region between the external diameter of the internal diameter of sleeve 28 and pile foundation 18.Top and bottom mud cover 42 at sleeve place between pile foundation and the sleeve.Fig. 7 shows a linkage, and wherein the part of pile foundation 18 mechanically is swaged in the groove 44, and these grooves 44 have been processed on the inner surface of sleeve 28.Fig. 8 illustrates the mode that is installed in the elastomeric material 46 between sleeve 28 and the pile foundation 18 of utilizing.The frictional force that is provided by elastomeric material 46 is held in place pile foundation 18.
Fig. 9 and 10 is illustrated in the installation or removal process to what keep that a temporary transient structural integrity is provided with and one can be used to center boring tower 14 is coupled to pedestal 12 or sleeve 28 is coupled to locking mechanism 22 on the pile foundation 18.This locking mechanism 22 comprises a plurality of fluid heads 48 and piston 50, and they all are installed to the outer circumferentially spaced apart of erection loop 52 on the sleeve 28 around one.Fluid head 48 makes piston 50 radial motions, and 50 in piston is against pile foundation 18 and provide enough mechanical constraint power to stop the motion of the relative sleeve of pile foundation like this.
Fig. 3 shows an alternative embodiment of the invention, and wherein pile foundation 18 20 upwards reaches platform 16 and platform is supported on the water surface 34 tops from the seabed.Center boring tower 14 is 20 Ban Yaochu that reach near pile foundation 18 from the seabed.Drilling well and product elevator 52 are exposed at the top of tower 14, and it will eliminate the possible accumulation of boring tower 14 internal gas, and make things convenient for examination and maintenance.
Owing in the scope of teaching the principle of the invention shown in this paper, can make many variations and different embodiment, and because described in an embodiment basic demand also can be made many modification according to this paper, so be to be understood that details as herein described only be used for illustrating of the present invention, and can not be as limitation of the invention.
Claims (15)
1. marine structure comprises:
A. a pedestal that is fixed in the seabed, described pedestal has a plurality of sleeves that are mounted thereon around its outer peripheral edges;
B. a boring tower that is installed on the described pedestal;
C. many individual along the length direction of described boring tower and the sleeve of installing and separating around its outer peripheral edges, make described sleeve be installed to coaxially on the described pedestal;
D. the described sleeve of a process is contained in the pile foundation on described boring tower and the described pedestal; And
E. be used between described pile foundation on described boring tower and the pedestal and described sleeve, providing the device of a mechanical connection.
2. marine structure as claimed in claim 1 is characterized in that, described pile foundation reaches the Ban Yaochu near described boring tower.
3. marine structure as claimed in claim 1 is characterized in that, also comprises the device that is used for providing a mechanical connection between described pile foundation on the described pedestal and described sleeve.
4. marine structure as claimed in claim 1 is characterized in that described boring tower is stretched above the water surface.
5. marine structure as claimed in claim 1 is characterized in that described boring tower is made of a grid framework.
6. marine structure as claimed in claim 1 is characterized in that described boring tower is made of a tubular structure.
7. marine structure as claimed in claim 1 is characterized in that described boring tower comprises buoyancy can.
8. marine structure as claimed in claim 1 is characterized in that described boring tower comprises oil storage tank.
9. marine structure comprises:
A. a pedestal that is fixed in the seabed, described pedestal has a plurality of sleeves that are mounted thereon around its outer peripheral edges;
B. a boring tower that is installed on the described pedestal, described boring tower reaches undersurface a certain height from the seabed;
C. many individual along the length direction of described boring tower and the sleeve of installing and separating around its outer peripheral edges, make described sleeve be installed to coaxially on the described pedestal;
D. the described sleeve of a process is contained in the pile foundation on described boring tower and the described pedestal, and described pile foundation reaches water surface top; And
E. be used between described pile foundation on described boring tower and the pedestal and described sleeve, providing the device of a mechanical connection.
10. marine structure as claimed in claim 9 is characterized in that, also comprises the device that is used for providing a mechanical connection between described pile foundation on the described pedestal and described sleeve.
11. marine structure as claimed in claim 9 is characterized in that, described boring tower is made of a grid framework.
12. marine structure as claimed in claim 9 is characterized in that, described boring tower is made of a tubular structure.
13. marine structure as claimed in claim 9 is characterized in that, described boring tower comprises buoyancy can.
14. marine structure as claimed in claim 9 is characterized in that, described boring tower comprises oil storage tank.
15. a marine structure comprises:
A. a pedestal that is fixed in the seabed, described pedestal has a plurality of sleeves that are mounted thereon around its outer peripheral edges;
B. a boring tower that is installed on the described pedestal;
C. many individual along the length direction of described boring tower and the sleeve of installing and separating around its outer peripheral edges, make described sleeve be installed to coaxially on the described pedestal;
D. the described sleeve of a process is contained in the pile foundation on described boring tower and the described pedestal, makes external influence mainly by described pile foundation opposing; And
E. be used between described pile foundation on described boring tower and the pedestal and described sleeve, providing the device of a mechanical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104598A CN1195053A (en) | 1997-03-28 | 1997-03-28 | Offshore structure for extreme water depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104598A CN1195053A (en) | 1997-03-28 | 1997-03-28 | Offshore structure for extreme water depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1195053A true CN1195053A (en) | 1998-10-07 |
Family
ID=5167421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104598A Pending CN1195053A (en) | 1997-03-28 | 1997-03-28 | Offshore structure for extreme water depth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195053A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316966B (en) * | 2005-10-11 | 2012-08-08 | Itrec有限责任公司 | Offshore platform with movable cantilever extending outside deck |
| CN103362478A (en) * | 2013-07-22 | 2013-10-23 | 江苏文汇钢业工程有限公司 | Preassembled type fixed and movable two-function bracket |
| CN104790368A (en) * | 2015-04-21 | 2015-07-22 | 天津大学前沿技术研究院有限公司 | Offshore building structure capable of achieving self-floating and towing and construction method of offshore building structure |
-
1997
- 1997-03-28 CN CN97104598A patent/CN1195053A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316966B (en) * | 2005-10-11 | 2012-08-08 | Itrec有限责任公司 | Offshore platform with movable cantilever extending outside deck |
| CN103362478A (en) * | 2013-07-22 | 2013-10-23 | 江苏文汇钢业工程有限公司 | Preassembled type fixed and movable two-function bracket |
| CN104790368A (en) * | 2015-04-21 | 2015-07-22 | 天津大学前沿技术研究院有限公司 | Offshore building structure capable of achieving self-floating and towing and construction method of offshore building structure |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |