CN203832720U - Extended tension leg platform based on inclined upright posts - Google Patents
Extended tension leg platform based on inclined upright posts Download PDFInfo
- Publication number
- CN203832720U CN203832720U CN201420141259.3U CN201420141259U CN203832720U CN 203832720 U CN203832720 U CN 203832720U CN 201420141259 U CN201420141259 U CN 201420141259U CN 203832720 U CN203832720 U CN 203832720U
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- tension leg
- column
- buoyancy tank
- platform based
- tank assembly
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 abstract 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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Abstract
The utility model relates to an extended tension leg platform based on inclined upright posts. The extended tension leg platform comprises a rectangular ring-shaped floating box component consisting of four floating boxes, wherein an upright post is in fastening connection with the upper surface of each of four intersection points of the floating box component; part of each upright post is positioned under water, and the rest part is positioned above water; the underwater part of each upright post adopts a vertical structure, and the part above water is inclined to the center of the floating box component; an included angle of alpha is formed between the center line of the bottom of each upright post and the horizontal center line of the floating box component; each upright post extends outwards relative to the floating box component, a plurality of tension leg suspension points are arranged on the outer side of the tail end, extending outwards, of each upright post, a tension leg is suspended on each tension leg suspension point, and the tail end of each tension leg is in fastening connection with the sea mud surface; a deck for placing oil recovery equipment, oil-gas processing equipment and drilling workover equipment is in fastening connection with the tops of the upright posts.
Description
Technical field
The utility model relates to a kind of tension leg platform, particularly about a kind of extension tension leg platform based on inclined pillar stand.
Background technology
Along with the development of world economy, various countries significantly increase the demand of petroleum and natural gas, therefore, need large-scale marine oil and gas exploitation and production platform, tension leg platform (TLP) belongs to the one in this class platform, plays an important role in marine oil and gas exploitation with in producing.Tension leg platform is a kind of compliant structure, and by vertical anchoring system, tension leg is connected to seabed, because tension leg has certain pretension at the installation initial stage, be tension, therefore, can tension leg platform be pulled down to certain depth by pretension.The tension leg platform of tightly being held is being complied with wave and is being swung together in horizontal surface, very little in vertical deep motion, therefore can meet oil-gas mining and production.The deck on tension leg platform top exceeds water surface certain distance, can be for arranging production of hydrocarbons facility, living facilities and drilling well facility.Tension leg platform have heave movement good, can adopt dry tree, easy to maintenance and reduce investment outlay and the advantage such as operating charges is low.
At present, although 25 tension leg platforms have successfully been set up in countries in the world, its stability, resist boisterous ability and be still one of focus of countries in the world focus of attention and research.2005, the Katrina (Katrina) that the U.S. and the Gulf of Mexico meet with and Rita (Rita) hurricane caused the damage of multiple tension leg platforms, comprising toppling of a tension leg platform.This incident has caused the great attention of people to tension leg platform safety, API(American Petroleum Institute) also therefore improve the design standard of tension leg platform, and insider's research also tends to improve stability and the boisterous ability of opposing of TLP more.The righting moment that the On-bottom stability of tension leg platform mainly relies on the pulling force of tension leg to form, the column spacing that therefore suitably increases connection tension leg will be more convenient for meeting tension leg platform relevant design standard, but its infrastructure cost also will increase greatly.
The installation risk and the cost of installation that how to reduce tension leg platform are another focuses of countries in the world focus of attention and research.At present some tension leg platform is because column spacing is compared with little and do not meet the wet requirement of dragging stability of entirety, therefore, can not by upper module and hull after dock or harbour assemble again entirety be dragged to oil field.Upper module and hull need to be installed respectively, first be employed after large-scale lifting installation ship installs hull, then upper module lifting is installed on hull to finally debugging at sea.This mounting means has following shortcoming: 1) cost is high, need to employ large-scale lifting installation ship, and along with the fast development of countries in the world marine oil and gas exploitation, large-scale lifting mounting shipping resource is more and more rare, locks in advance installation resource difficulty increasing; 2) installation risk is large, need to carry out the offshore lifting operation of heavy die block; 3) be subject to weather effect degree large, large-scale hoisting and hanging operation requires high to weather, require high to the assurance of weather; 4) marine inconvenient debugging, the time is long.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind ofly can resist inclement weather, stability is high, installation risk is little and cost of installation the is low extension tension leg platform based on inclined pillar stand.
For achieving the above object, the utility model is taked following technical scheme: a kind of extension tension leg platform based on inclined pillar stand, it comprises a rectangular ring buoyancy tank assembly being made up of four buoyancy tanks, and the upper surface at four intersection point places of described buoyancy tank assembly is all fastenedly connected a column; And described in each, a part for column is positioned at below the water surface, more than remainder is positioned at the water surface; It is characterized in that: the part that described in each, column is positioned at below the water surface is vertical structure, be positioned at all centroclinal to described buoyancy tank assembly of more than water surface part; Described in each, between the line of centers of column bottom surface and the horizontal center line of described buoyancy tank assembly, there is angle α; Described in each, column all stretches out with respect to described buoyancy tank assembly, extended described in each the end outside of column some tension leg hitch poinies are all set, described in each, on tension leg hitch point, all hang a tension leg, described in each, the end of tension leg is all fastenedly connected on the mud face of seabed; The top of described column is fastenedly connected one for placing the deck of oil production equipment, oil gas treatment facility and drilling and repairing well equipment.
The part that described in each, column is positioned at more than the water surface is 20～30 ° to the centroclinal angle of described buoyancy tank assembly, and the angle α described in each between the horizontal center line of column bottom surface and the horizontal center line of described buoyancy tank assembly is 45 °.
Described column adopts the version that cross sectional shape is rectangle.
Described in each, on column, all offer a passage for delivery of personnel or goods.
Described in each, column and buoyancy tank are all closed structures that quality steel plate is welded.
Described in each, the inner side edge of the inner side edge of column bottom surface and described buoyancy tank assembly is concordant or outwards stagger.
The utility model is owing to taking above technical scheme, and it has the following advantages: 1, according to the feature of wave action, larger the closer to water surface wave application force.Because the column design more than the utility model water surface is the mode centroclinal to platform, therefore, not only can reduce the attack application force of wave column, but also can reduce the application force of wind-force to the column on the water surface; In addition, also help design and the optimization of tension leg, be more applicable for the inclement weather that waves whipped up by the wind rolled turbulently.2, because column of the present utility model is with respect to the buoyancy tank assembly segment distance that stretches out, has therefore not only increased antidumping moment and stability, but also made the connection of column and buoyancy tank assembly convenient.In addition, compared with the tension leg platform at buoyancy tank intersection point place, increase the distance of tension leg apart from platform center with traditional column center, in the situation that tension leg tension force is identical, increased righting moment, be conducive to tension leg platform and meet transaction capabilities requirement, increased the action effect of tension leg.In the situation that keeping tension leg action effect identical, when increasing tension leg Strength Safety redundancy, also reduce the even radical of tension leg of size of tension leg conversely speaking.As everyone knows, tension leg is one of position of tension leg platform most critical, also be one of parts that cost is the highest, the main body of tension leg is mainly by external import at present, and its transom is all special purpose parts, cost is very high, therefore reduces tension leg radical for tension leg platform design and is reduced to significant.3, because the utility model adopts outward extending column, the righting moment that while having increased towage, column waterplane provides, can make overall wet the dragging of upper module and hull time, stability meets the demands, thereby make the utility model to install and do not need to employ large-scale lifting mounting shipping by the wet oil field that is dragged to of upper module and hull entirety, therefore, risk, cost and the strict demand to installation weather of large-scale hoisting and hanging are reduced, reduce the Installation and Debugging time simultaneously, be conducive to the early stage drilling in oil field and production.
Brief description of the drawings
Fig. 1 is side-looking structural representation of the present utility model
Fig. 2 is schematic top plan view of the present utility model
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises a buoyancy tank assembly 1, the rectangular ring structure that buoyancy tank assembly 1 is made up of four buoyancy tanks 10, the upper surface at 1 four intersection point places of buoyancy tank assembly is fastenedly connected respectively a column 3, and a part for each column 3 is positioned at the water surface below 2, remainder is positioned at the water surface more than 2.Each column 3 is positioned at the part of the water surface below 2 and is vertical structure, is positioned at all centroclinal to buoyancy tank assembly 1 of more than 2 part of the water surface.Angle between the horizontal center line of each column 3 bottom surface and the horizontal center line of buoyancy tank assembly 1 is α.Each column 3 all stretches out with respect to buoyancy tank assembly 1, the end outside of extended each column 3 all arranges some tension leg hitch poinies 4, on each tension leg hitch point 4, all hang a tension leg 5, the end of each tension leg 5 is all fastenedly connected on the mud face of seabed.The top of column 3 is fastenedly connected one for placing the deck 6 of oil production equipment, oil gas treatment facility and drilling and repairing well equipment, and oil-gas mining hangs on deck 6 by required standpipe and outer defeated standpipe (not shown).
In the above-described embodiments, each column 3 is positioned at more than 2 part of the water surface and is 20～30 ° to the centroclinal angle of buoyancy tank assembly 1, and the angle α between the horizontal center line of each column 3 bottom surface and the horizontal center line of buoyancy tank assembly 1 is 45 °.
In the above-described embodiments, to adopt cross sectional shape be the version of rectangle to column 3.
In the above-described embodiments, on each column 3, all offer a passage 7 for delivery of personnel or goods.
In the above-described embodiments, column 3 and buoyancy tank 10 are all closed structures that quality steel plate is welded.
In the above-described embodiments, the inner side edge of column 3 bottom surfaces and the inner side edge of buoyancy tank assembly 1 are concordant or outwards stagger.
The various embodiments described above are only for illustrating the utility model; wherein relative position and the manufacture craft etc. of the structure of each parts, connection mode, column and buoyancy tank assembly all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (10)
1. the extension tension leg platform based on inclined pillar stand, it comprises a rectangular ring buoyancy tank assembly being made up of four buoyancy tanks, the upper surface at four intersection point places of described buoyancy tank assembly is all fastenedly connected a column; And described in each, a part for column is positioned at below the water surface, more than remainder is positioned at the water surface; It is characterized in that: the part that described in each, column is positioned at below the water surface is vertical structure, be positioned at all centroclinal to described buoyancy tank assembly of more than water surface part; Described in each, between the line of centers of column bottom surface and the horizontal center line of described buoyancy tank assembly, there is angle α; Described in each, column all stretches out with respect to described buoyancy tank assembly, extended described in each the end outside of column some tension leg hitch poinies are all set, described in each, on tension leg hitch point, all hang a tension leg, described in each, the end of tension leg is all fastenedly connected on the mud face of seabed; The top of described column is fastenedly connected one for placing the deck of oil production equipment, oil gas treatment facility and drilling and repairing well equipment.
2. the extension tension leg platform based on inclined pillar stand as claimed in claim 1, it is characterized in that: the part that described in each, column is positioned at more than the water surface is 20～30 ° to the centroclinal angle of described buoyancy tank assembly, and the angle α described in each between the horizontal center line of column bottom surface and the horizontal center line of described buoyancy tank assembly is 45 °.
3. the extension tension leg platform based on inclined pillar stand as claimed in claim 1, is characterized in that: described column adopts the version that cross sectional shape is rectangle.
4. the extension tension leg platform based on inclined pillar stand as claimed in claim 2, is characterized in that: described column adopts the version that cross sectional shape is rectangle.
5. the extension tension leg platform based on inclined pillar stand as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described in each, on column, all offer a passage for delivery of personnel or goods.
6. the extension tension leg platform based on inclined pillar stand as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described in each, column and buoyancy tank are all closed structures that quality steel plate is welded.
7. the extension tension leg platform based on inclined pillar stand as claimed in claim 5, is characterized in that: described in each, column and buoyancy tank are all closed structures that quality steel plate is welded.
8. the extension tension leg platform based on inclined pillar stand as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described in each, the inner side edge of the inner side edge of column bottom surface and described buoyancy tank assembly is concordant or outwards stagger.
9. the extension tension leg platform based on inclined pillar stand as claimed in claim 5, is characterized in that: described in each, the inner side edge of the inner side edge of column bottom surface and described buoyancy tank assembly is concordant or outwards stagger.
10. the extension tension leg platform based on inclined pillar stand as claimed in claim 6, is characterized in that: described in each, the inner side edge of the inner side edge of column bottom surface and described buoyancy tank assembly is concordant or outwards stagger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141259.3U CN203832720U (en) | 2014-03-26 | 2014-03-26 | Extended tension leg platform based on inclined upright posts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141259.3U CN203832720U (en) | 2014-03-26 | 2014-03-26 | Extended tension leg platform based on inclined upright posts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203832720U true CN203832720U (en) | 2014-09-17 |
Family
ID=51510595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420141259.3U Expired - Lifetime CN203832720U (en) | 2014-03-26 | 2014-03-26 | Extended tension leg platform based on inclined upright posts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203832720U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895826A (en) * | 2014-03-26 | 2014-07-02 | 中国海洋石油总公司 | Extended tension leg platform on basis of oblique upright columns |
| CN106194059A (en) * | 2016-06-30 | 2016-12-07 | 中国石油大学(华东) | A kind of tension leg platform (TLP) underwater well head layout method |
| CN106794888A (en) * | 2014-10-10 | 2017-05-31 | 泰克尼普法国公司 | With the floating platform for pivoting keel shirt rim |
-
2014
- 2014-03-26 CN CN201420141259.3U patent/CN203832720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895826A (en) * | 2014-03-26 | 2014-07-02 | 中国海洋石油总公司 | Extended tension leg platform on basis of oblique upright columns |
| CN106794888A (en) * | 2014-10-10 | 2017-05-31 | 泰克尼普法国公司 | With the floating platform for pivoting keel shirt rim |
| CN106794888B (en) * | 2014-10-10 | 2019-04-02 | 泰克尼普法国公司 | With the floating platform for pivoting keel skirt |
| CN106194059A (en) * | 2016-06-30 | 2016-12-07 | 中国石油大学(华东) | A kind of tension leg platform (TLP) underwater well head layout method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |