CN203960832U - A kind of 6 leg jacket wellhead platforms - Google Patents
A kind of 6 leg jacket wellhead platforms Download PDFInfo
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- CN203960832U CN203960832U CN201420393211.1U CN201420393211U CN203960832U CN 203960832 U CN203960832 U CN 203960832U CN 201420393211 U CN201420393211 U CN 201420393211U CN 203960832 U CN203960832 U CN 203960832U
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- wellhead
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Abstract
The utility model discloses a kind of 6 leg jacket wellhead platforms.It comprises 6 jacket legs and platform chunk; Described jacket leg is vertically to arrange, and along on horizontal plane, the line of described jacket leg forms a hexagon; Described jacket platform comprises 2 described platform chunks, and 2 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 described jacket legs that are triangularly arranged; The medium position of described platform chunk is provided with well slot district.The novel 6 leg jacket platform chunks that the utility model provides, make platform chunk can adopt less medium-sized crane barge (actual Lifting Capacity is less than 3000 tons) to carry out piecemeal installation, can reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Description
Technical field
The utility model relates to a kind of novel 6 leg jacket wellhead platforms, belongs to offshore platform field.
Background technology
In recent years along with continuous discovery and the rolling development of marine oil field, most blocks have formed regionl development general layout, in regionl development, need according to offshore oil field development scale and newly-built platform the functional requirement of bearing, some wellhead platform not only will be born the function of oil recovery, well workover, also needs to arrange as the gathering center in region 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 platforms that need 6 legs or 8 leg jackets to support provide enough deck spaces.
Adopt traditional 6 leg jacket wellhead platform forms, owing to realizing, deck chunk is carried out to piecemeal lifting, can only carry out integral hoisting, therefore must adopt large-scale floating crane (actual Lifting Capacity need be greater than 3500 tons) to carry out integral hoisting.And large-scale floating crane resource scarcity, expense is the twice left and right of medium-sized crane barge, causes operating expenses significantly to increase.
Adopt 8 leg jacket form wellhead platforms 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, can effectively reduce installation cost.But 8 leg platforms have increased two legs than 6 leg platforms more, in structural steel amount, also can roll up than 6 leg platforms.
Utility model content
The purpose of this utility model is to provide a kind of novel 6 leg jacket wellhead platforms, the utility model is by changing the arrangement of jacket operating point (the platform chunk strong point), solved traditional 6 leg wellhead platforms can not piecemeal the problem of lifting, reduce and employ large-scale floating crane resource, reduce cost of investment, improved the economic benefit of project.
Novel 6 leg jacket wellhead platforms provided by the utility model, comprise 6 jacket legs and platform chunk;
Described jacket leg is vertically to arrange, and along on horizontal plane, the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 described platform chunks, and 2 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 described jacket legs that are 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 when 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 and lifts.
Described jacket wellhead platform, 2 described platform chunks are symmetrical set, and can reduce the bias of lifting operating mode chunk, reduce the extra demand to crane barge resource; Can reduce operating mode in place time, the bias of chunk, improves the stressed of jacket simultaneously, improves the overall utilization rate of pile foundation.
Described jacket wellhead platform, is 2 described leg-of-mutton drift angles that are oppositely arranged and is 45 °～75 °, to keep the stability of platform.
Compared with 6 traditional leg jacket wellhead platforms, there is difference as shown in table 1 in position, jacket operating point, mounting means, well slot district and workover rig position and expense in the novel 6 leg jacket wellhead platforms that the utility model provides:
The difference of the novel 6 leg jacket wellhead platforms of table 1 the utility model and traditional 6 leg jacket wellhead platforms
Novel 6 leg jacket wellhead platform chunks provided by the utility model, the line of jacket leg operating point is hexagon, can obtain following technique effect:
1) be convenient to platform chunk piecemeal and install, increase the flexibility of installing;
2) can select 6 leg jacket platform forms for the platform of medium-scale floor space;
3) improve the bias of traditional 6 leg jacket wellhead platforms liftings operating mode chunks, reduced the extra demand to crane barge resource;
4) improve the bias of traditional 6 leg jacket wellhead platform condition chunk in place, improved the overall utilization rate of pile foundation.
The novel 6 leg jacket platform chunks that the utility model provides, make platform chunk can adopt less medium-sized crane barge (actual Lifting Capacity is less than 3000 tons) to carry out piecemeal installation, can reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Brief description of the drawings
Fig. 1 is the top view of jacket leg in the novel 6 leg jacket wellhead platforms of the utility model.
Fig. 2 is the top view of the novel 6 leg jacket wellhead platforms of the utility model.
Fig. 3 is the elevational schematic view of the novel 6 leg jacket wellhead platforms of the utility model.
In figure, each mark is as follows:
1 jacket leg, 2 offshore platform chunk edge lines, 3 offshore platform chunk lifting piecemeal lines, 4 crossbeam center lines, left of 5 offshore platform chunk piecemeal lifting, 6 right of offshore platform chunk piecemeal liftings, 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 utility model is described further, but the utility model is not limited to following examples.
As depicted in figs. 1 and 2, for the novel 6 leg jacket wellhead platforms that the utility model provides, it comprises 6 jacket legs 1 and platform chunk (not marking in figure), and 6 jacket legs 1 are vertically to arrange, and along on 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.
The utility model jacket wellhead platform comprises 2 platform chunks, all symmetrical upper ends that are positioned over jacket leg 1 of 2 platform chunks, and each platform chunk is all positioned over the upper end of 3 jacket legs 1 that are triangularly arranged, as shown in Figure 2.In order to ensure the stability of platform, jacket leg 1 operating point line angle C (being 2 leg-of-mutton drift angles that are 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, while making the lifting of offshore platform chunk piecemeal, left 5 of offshore platform chunk piecemeal lifting and the lifting of offshore platform chunk piecemeal are supported by 3 jacket legs 1 for right 6, realize piecemeal lifting.Well slot district 7 is arranged in platform central authorities and is divided into two by lifting piecemeal line 3, respectively by right 6 of left 5 of platform chunk piecemeal lifting at sea and the lifting of offshore platform chunk piecemeal.Waterproof casing 8 is arranged in the centre of the framework that 4 jacket legs 1 form.Workover rig 9 is arranged in the central authorities of offshore platform chunk.
The novel 6 leg jacket wellhead platforms that the utility model provides 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.
Taking certain offshore platform as example, adopt the novel 6 leg jacket wellhead platforms of the utility model 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 to arrange, and along on horizontal plane, the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 described platform chunks, and 2 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 described jacket legs that are 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: in the framework that 4 described jacket legs surround, be provided with waterproof casing.
4. according to the jacket wellhead platform described in any one in claim 1-3, it is characterized in that: the line of described jacket leg forms a regular hexagon.
5. jacket wellhead platform according to claim 4, is characterized in that: 2 described platform chunks are symmetrical set.
6. jacket wellhead platform according to claim 5, is characterized in that: be 2 described leg-of-mutton drift angles that are oppositely arranged and be 45 °～75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393211.1U CN203960832U (en) | 2014-07-16 | 2014-07-16 | A kind of 6 leg jacket wellhead platforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393211.1U CN203960832U (en) | 2014-07-16 | 2014-07-16 | A kind of 6 leg jacket wellhead platforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203960832U true CN203960832U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420393211.1U Active CN203960832U (en) | 2014-07-16 | 2014-07-16 | A kind of 6 leg jacket wellhead platforms |
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| Country | Link |
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| CN (1) | CN203960832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256778A (en) * | 2014-07-16 | 2016-01-20 | 中国海洋石油总公司 | Six-leg jacket wellhead platform |
| CN106869852A (en) * | 2017-03-14 | 2017-06-20 | 东北石油大学 | A kind of environmentally friendly operation wellhead simple platform system of fast demountable |
-
2014
- 2014-07-16 CN CN201420393211.1U patent/CN203960832U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256778A (en) * | 2014-07-16 | 2016-01-20 | 中国海洋石油总公司 | Six-leg jacket wellhead platform |
| CN106869852A (en) * | 2017-03-14 | 2017-06-20 | 东北石油大学 | A kind of environmentally friendly operation wellhead simple platform system of fast demountable |
| CN106869852B (en) * | 2017-03-14 | 2019-02-19 | 东北石油大学 | A kind of environmentally friendly operation wellhead simple platform system of fast demountable |
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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 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 Patentee before: China National Offshore Oil Corporation |
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| CP01 | Change in the name or title of a patent holder |