CN105256778A - Six-leg jacket wellhead platform - Google Patents
Six-leg jacket wellhead platform Download PDFInfo
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- CN105256778A CN105256778A CN201410338681.2A CN201410338681A CN105256778A CN 105256778 A CN105256778 A CN 105256778A CN 201410338681 A CN201410338681 A CN 201410338681A CN 105256778 A CN105256778 A CN 105256778A
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- jacket
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- wellhead
- chunk
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Abstract
The invention discloses a six-leg jacket wellhead platform. The six-leg jacket wellhead platform comprises six jacket legs and platform modules. The jacket legs are arranged vertically and located on the horizontal plane. Connection lines of the jacket legs form a hexagon. The jacket platform comprises the two platform modules. The two platform modules are both arranged at the upper ends of the jacket legs. Each platform module is placed at the upper ends of the three corresponding jacket legs which are arranged in a triangle shape. A well slot area is arranged in the middle of the platform modules. According to the novel six-leg jacket wellhead platform, a small medium-sized floating crane with the practical hoisting capacity being lower than 3000 tons is adopted for installing the platform modules in a blocked mode, large-sized floating crane resources can be saved, investment cost is reduced, and economic benefits of a program are improved.
Description
Technical field
The present invention relates to a kind of novel 6 leg jacket wellhead platforms, belong to offshore platform field.
Background technology
In recent years along with continuous discovery and the rolling development of marine oil field, most block forming region exploitation general layout, in regionl development, the functional requirement born is needed according to offshore oil field development scale and newly-built platform, some wellhead platform not only will bear the function of oil recovery, well workover, also needs the gathering center as region to arrange the facilities such as power station, oil gas water treatment and life building.Because relevant equipment, facility are more, 4 conventional leg platform floor spaces often cannot meet the demands, and most platform needing 6 legs or 8 leg jackets to support provides enough deck spaces.
Adopt traditional 6 leg jacket wellhead platform forms owing to cannot realize carrying out piecemeal lifting to deck chunk, can only integral hoisting be carried out, large-scale floating crane (actual Lifting Capacity need be greater than 3500 tons) therefore must be adopted to carry out integral hoisting.And large-scale floating crane resource scarcity, expense is about the twice of medium-sized crane barge, causes operating expenses significantly to increase.
Adopt 8 leg jacket form wellhead platforms then can realize the smaller resource of employing scale and also realize piecemeal lifting than more rich medium-sized crane barge (actual Lifting Capacity is less than 3000 tons).Medium-sized crane barge expense is lower, effectively can reduce installation cost.But 8 leg platforms add two legs than 6 leg platforms more, structural steel amount also can roll up than 6 leg platforms.
Summary of the invention
The object of this invention is to provide a kind of novel 6 leg jacket wellhead platforms, the present invention is by changing the arrangement of jacket operating point (the platform chunk strong point), solve traditional 6 leg wellhead platforms can not piecemeal lifting problem, reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Novel 6 leg jacket wellhead platforms provided by the present invention, comprise 6 jacket legs and platform chunk;
Described jacket leg is vertically arrange, and goes up along the horizontal plane, and the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 pieces of described platform chunks, and 2 pieces of described platform chunks are all positioned over the upper end of described jacket leg, and each described platform chunk is all positioned over the upper end of 3 the described jacket legs be triangularly arranged;
The medium position of described platform chunk is provided with well slot district.
Described jacket wellhead platform, the medium position of described platform chunk is also provided with workover rig and/or platform rig, can be located in described well slot district during work.
Described jacket wellhead platform, is provided with waterproof casing in the framework that 4 described jacket legs surround.
Described jacket wellhead platform, the line of described jacket leg forms a regular hexagon, is convenient to described platform chunk and is divided into left and right two pieces to lift.
Described jacket wellhead platform, 2 pieces of described platform chunks are symmetrical set, and can reduce the bias of lifting operating mode chunk, reduce the extra demand to crane barge resource; The bias of chunk during operating mode in place can be reduced simultaneously, improve the stressed of jacket, improve the overall utilization rate of pile foundation.
Described jacket wellhead platform, is 45 ° ~ 75 °, to keep the stability of platform in 2 that are oppositely arranged described leg-of-mutton drift angles.
Compared with 6 traditional leg jacket wellhead platforms, there is difference as shown in table 1 in jacket operating point location, mounting means, well slot district and workover rig position and expense in novel 6 leg jacket wellhead platforms provided by the invention:
The difference of the novel 6 leg jacket wellhead platforms of table 1 the present invention and 6 traditional leg jacket wellhead platforms
Novel 6 leg jacket wellhead platform chunks provided by the present invention, the line of jacket leg operating point is hexagon, can obtain following technique effect:
1) be convenient to platform chunk piecemeal install, increase the flexibility of installing;
2) platform for medium-scale floor space can select 6 leg jacket flat form;
3) improve the bias of traditional 6 leg jacket wellhead platform lifting operating mode chunks, reduce the extra demand to crane barge resource;
4) improve the bias of traditional 6 leg jacket wellhead platform condition chunk in place, improve the overall utilization rate of pile foundation.
Novel 6 leg jacket platform chunks provided by the invention, make platform chunk that less medium-sized crane barge (actual Lifting Capacity is less than 3000 tons) can be adopted to carry out piecemeal installation, can reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Accompanying drawing explanation
Fig. 1 is the top view of jacket leg in the novel 6 leg jacket wellhead platforms of the present invention.
Fig. 2 is the top view of the novel 6 leg jacket wellhead platforms of the present invention.
Fig. 3 is the elevational schematic view of the novel 6 leg jacket wellhead platforms of the present invention.
In figure, each mark is as follows:
1 jacket leg, 2 offshore platform chunk edge lines, 3 offshore platform chunks lifting piecemeal lines, 4 crossbeam center lines, 5 offshore platform chunk piecemeals lift left piece, 6 offshore platform chunk piecemeals lift right piece, 7 well slot districts, 8 waterproof casings, 9 workover rigs;
A jacket operating point center to center distance, B jacket operating point center to center distance, C jacket operating point line angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As depicted in figs. 1 and 2, for novel 6 leg jacket wellhead platforms provided by the invention, it comprises 6 jacket legs 1 and platform chunk (not marking in figure), and 6 jacket legs 1 are vertically arrange, and go up along the horizontal plane, the line of jacket leg 1 forms a hexagon; Jacket leg operating point center to center distance A, B may be selected to be 14m ~ 20m.
Jacket wellhead platform of the present invention comprises 2 pieces of platform chunks, the upper end being positioned over jacket leg 1 that 2 pieces of platform chunks are all symmetrical, and each platform chunk is all positioned over the upper end of 3 the jacket legs 1 be triangularly arranged, as shown in Figure 2.In order to ensure the stability of platform, jacket leg 1 operating point line angle C (namely in 2 the leg-of-mutton drift angles be oppositely arranged) is generally taken as 45 ° ~ 75 °.
As shown in Figures 2 and 3, offshore platform chunk lifting piecemeal line 3 is in chunk centre position, when offshore platform chunk piecemeal is lifted, offshore platform chunk piecemeal lifts left piece 5 and offshore platform chunk piecemeal lifts right piece 6 by 3 jacket legs 1 and supports, and realizes piecemeal lifting.Well slot district 7 is arranged in platform central and is lifted piecemeal line 3 and be divided into two pieces, is lifted left piece 5 respectively and offshore platform chunk piecemeal lifts on right piece 6 by sea platform chunk piecemeal.Waterproof casing 8 is arranged in the centre of the framework that 4 jacket legs 1 are formed.Workover rig 9 is arranged in the central authorities of offshore platform chunk.
Novel 6 leg jacket wellhead platforms provided by the invention are generally applicable to the medium-sized offshore platform of weight at 3000t ~ 5000t.Within the scope of this, select above-mentioned novel 6 leg jacket wellhead platforms in technical scheme more rationally, economic benefit is more remarkable.
For certain offshore platform, adopt the novel 6 leg jacket wellhead platforms of the present invention and adopt the contrast of traditional jacket wellhead platform as shown in table 2.
The contrast of the novel 6 leg jacket platforms of table 2 and the traditional jacket platform of employing
Claims (6)
1. 6 leg jacket wellhead platforms, is characterized in that: it comprises 6 jacket legs and platform chunk;
Described jacket leg is vertically arrange, and goes up along the horizontal plane, and the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 pieces of described platform chunks, and 2 pieces of described platform chunks are all positioned over the upper end of described jacket leg, and each described platform chunk is all positioned over the upper end of 3 the described jacket legs be triangularly arranged;
The medium position of described platform chunk is provided with well slot district.
2. jacket wellhead platform according to claim 1, is characterized in that: the medium position of described platform chunk is provided with workover rig and/or platform rig.
3. jacket wellhead platform according to claim 1, is characterized in that: be provided with waterproof casing in the framework that 4 described jacket legs surround.
4. the jacket wellhead platform according to any one of claim 1-3, is characterized in that: the line of described jacket leg forms a regular hexagon.
5. the jacket wellhead platform according to any one of claim 1-4, is characterized in that: 2 pieces of described platform chunks are symmetrical set.
6. jacket wellhead platform according to claim 5, is characterized in that: be 45 ° ~ 75 ° in 2 that are oppositely arranged described leg-of-mutton drift angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338681.2A CN105256778A (en) | 2014-07-16 | 2014-07-16 | Six-leg jacket wellhead platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338681.2A CN105256778A (en) | 2014-07-16 | 2014-07-16 | Six-leg jacket wellhead platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105256778A true CN105256778A (en) | 2016-01-20 |
Family
ID=55096694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410338681.2A Pending CN105256778A (en) | 2014-07-16 | 2014-07-16 | Six-leg jacket wellhead platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105256778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010170A (en) * | 2016-01-27 | 2017-08-04 | 中国国际海运集装箱(集团)股份有限公司 | The preparation method and folding method of waterproof casing base platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS634110A (en) * | 1986-06-24 | 1988-01-09 | Nippon Kokan Kk <Nkk> | Method for setting offshore platform |
| CN202298591U (en) * | 2011-09-23 | 2012-07-04 | 中国海洋石油总公司 | Shallow water tremie frame platform |
| CN103225304A (en) * | 2013-04-28 | 2013-07-31 | 国电联合动力技术有限公司 | Marine foundation supporting structure and construction method thereof |
| CN203960832U (en) * | 2014-07-16 | 2014-11-26 | 中国海洋石油总公司 | A kind of 6 leg jacket wellhead platforms |
-
2014
- 2014-07-16 CN CN201410338681.2A patent/CN105256778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS634110A (en) * | 1986-06-24 | 1988-01-09 | Nippon Kokan Kk <Nkk> | Method for setting offshore platform |
| CN202298591U (en) * | 2011-09-23 | 2012-07-04 | 中国海洋石油总公司 | Shallow water tremie frame platform |
| CN103225304A (en) * | 2013-04-28 | 2013-07-31 | 国电联合动力技术有限公司 | Marine foundation supporting structure and construction method thereof |
| CN203960832U (en) * | 2014-07-16 | 2014-11-26 | 中国海洋石油总公司 | A kind of 6 leg jacket wellhead platforms |
Non-Patent Citations (1)
| Title |
|---|
| 廖谟圣: "东海平湖油气田开发工程投产成功", 《西部探矿工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010170A (en) * | 2016-01-27 | 2017-08-04 | 中国国际海运集装箱(集团)股份有限公司 | The preparation method and folding method of waterproof casing base platform |
| CN107010170B (en) * | 2016-01-27 | 2019-02-15 | 中国国际海运集装箱(集团)股份有限公司 | The production method and folding method of waterproof casing base platform |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |