CN203383796U - Ultra-deep water-oil-gas development system based on dry-type Christmas tree - Google Patents
Ultra-deep water-oil-gas development system based on dry-type Christmas tree Download PDFInfo
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- CN203383796U CN203383796U CN201320496104.7U CN201320496104U CN203383796U CN 203383796 U CN203383796 U CN 203383796U CN 201320496104 U CN201320496104 U CN 201320496104U CN 203383796 U CN203383796 U CN 203383796U
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Abstract
The utility model discloses an ultra-deep water-oil-gas development system based on a dry-type Christmas tree. The ultra-deep water-oil-gas development system comprises an in-water buoy, an underwater wellhead cabin, the dry-type Christmas tree, an in-water manifold device, an upper-portion flexible vertical pipe and a water-surface floating-type production device. The dry-type Christmas tree and the relevant devices are installed inside the underwater wellhead cabin, and the underwater wellhead cabin is installed on a wellhead of the in-water buoy. An oil output pipeline of the underwater wellhead cabin is connected with an inlet of the in-water manifold device. The in-water buoy is located at the position which is 100-400m deep under the water surface and is moored on a sea bed through tension mooring ropes. Due to the fact that the underwater dry-type Christmas tree is adopted in the ultra-deep water-oil-gas development system, the Christmas tree and the relevant devices are separated from the sea water environment through the underwater wellhead cabin, and compared with a wet-type Christmas tree, the dry-type Christmas tree avoids the influences of sea water corrosion and pressure, seafloor sludge, marine lives and the like; the adaptability is strong, operation is convenient and safe, the maintenance cost is low and installation without a diver can be completely realized.
Description
Technical field
The utility model relates to a kind of super deep water hydrocarbon field Application and Development technology, particularly a kind of super deepwater oil-gas development system based on dry type tree.
Background technology
Along with the mankind, to the expanding day of petroleum resources demand and the development of Offshore Oil Industry technology, marine petroleum exploitation is towards super deep water (1500～3000m) and profound water (being greater than 3000m) future development.
At present, deepwater production adopts floating oil production system or submerged production system usually.Production tree is the important component part of various oil extraction systems.Whether the operating environment according to production tree directly contacts and it can be divided into to dry type tree and wet-type christmas tree with seawater.Dry type tree can be divided into dry type tree waterborne and underwater dry-type Christmas tree again according to its installation site.Dry type tree waterborne is the important component part of floating oil production system; Underwater dry-type Christmas tree and wet-type christmas tree are the important component parts of submerged production system.
Existing floating oil production system in use, is arranged on dry type tree waterborne on the water surface floating type process units, and the weight of the weight of production tree and bottom water neutral tube is born by the water surface floating type process units.Along with the increase of operating depth, length and the weight of water neutral tube constantly increase, more and more higher to the technical requirements of water surface floating type process units and water neutral tube system.
Existing submerged production system in use, directly is installed on seabed by underwater dry-type Christmas tree or wet-type christmas tree.For underwater dry-type Christmas tree, in when application, production tree and auxiliary equipment thereof are arranged in the wellhead chamber of a sealing isolated with seawater.Along with the increase of operating depth, the intensity of shape, size, seal and the material in underwater well head cabin, compressive property etc. are had to higher requirement, and install more complicated.
To sum up, the application depth of water of existing dry type tree technology is subject to certain restrictions, and in super deep water and the exploitation of profound aqueous hydrocarbon field, application is very few.
At present, many employing wet-type christmas trees in super deepwater environment.Yet, because it is directly exposed in seawater, seriously corroded, be subject to the impact of bottom silt, marine growth etc., to the anti-seawater corrosion ability of material, and the requirement of the performances such as intensity, toughness very high; And after the depth of water surpasses certain limit, structure is more complicated, with high costs, and its operation, maintenance cost increase thereupon, and the techniques such as installation, well workover are also more complicated.In addition, when the depth of water is larger, production riser, because deadweight is excessive, can cause dynamic response and the series of problems such as oversize of water surface floating type process units.
Based on the problems referred to above, under super deep water and profound water environment, safety, feasibility and the economic serviceability of existing production tree technology all can't meet the demands.
Summary of the invention
For solving when existing production tree technology is applied in super deepwater environment the problems referred to above that exist, the utility model will design a kind of super deepwater oil-gas development system based on existing dry type tree, while applying in super deepwater environment to reduce existing dry type tree waterborne to the technical requirements of water surface floating type process units and water neutral tube system, and existing underwater dry-type Christmas tree while applying in super deepwater environment to wellhead chamber intensity, the requirement of compressive property and seal etc., and the series of problems run into while avoiding wet-type christmas tree to apply in super deep water, thereby promote the ability to work of existing offshore oil production system, safer, economy and every challenge of the super deep water of reply and profound water marine environment effectively.
For achieving the above object, the technical solution of the utility model is as follows: a kind of super deepwater oil-gas development system based on dry type tree comprises manifold apparatus, top compliant riser and water surface floating type process units in floating drum in water, underwater well head cabin, dry type tree, water;
Described dry type tree and relevant device thereof are installed in the underwater well head cabin, and described underwater well head cabin is arranged in water the floating drum well in word; The flow line in underwater well head cabin is connected with the entrance of manifold apparatus in water;
In described water, floating drum is positioned at the following degree of depth 100～400m of water surface place, by the tension cables mooring on sea bed; In water, floating drum well head head is connected by the bottom rigid riser with subsea wellhead installations; The lower end of described top compliant riser is connected with manifold apparatus outlet in water, and the upper end of top compliant riser is connected with the water surface floating type process units.
Mounting method of the present utility model comprises the following steps:
A, previous work
A1, dry type tree and relevant device and underwater well head cabin install on the coast;
A2, drill ship are in place, complete the brill Completion Operations of offshore oil and gas field, and subsea wellhead installations installs;
In A3, water, floating drum installs, and in water, floating drum well head head installs;
A4, complete the tieback of floating drum well head head in subsea wellhead installations and water;
The installation in B, underwater well head cabin
B1, the underwater well head cabin is connected on leading truck with hydraulic connector, with drilling rod, the underwater well head cabin is transferred along guide line together with hydraulic connector, and, under the provisional guide seats that is positioned at well head head place auxiliary, complete being connected of hydraulic connector and floating drum well head head in water;
B2, through the sealing pressure testing after, drill ship is withdrawn;
C, underwater well head cabin are connected with manifold apparatus in water
Auxiliary by underwater robot ROV, complete being connected of underwater well head cabin flow line and manifold apparatus entrance in water, and flow line manifold apparatus in water in several underwater well heads cabin collects becomes a flow line;
D, top compliant riser are connected with manifold apparatus in water and water surface floating type process units
Auxiliary by ROV, complete being connected of compliant riser lower end, top and manifold apparatus in water, and being connected of compliant riser upper end, top and water surface floating type process units.
During the utility model work, the petroleum resources in seabed is by manifold apparatus, top compliant riser in floating drum well head head, underwater well head cabin, flow line, water in subsea wellheads, bottom rigid riser, water, finally arrive the water surface floating type process units, thereby complete the exploitation work of marine oil and gas resource.
Compared with prior art, the utlity model has following advantage:
1, because the utility model adopts underwater dry-type Christmas tree, production tree and relevant device thereof are separated by underwater well head cabin and briny environment, compare with wet-type christmas tree, avoided seawater corrosion and pressure, and the impact of bottom silt and marine growth etc.; Its strong adaptability, easy and safe to operate, maintenance cost is low, can be completely achieved to exempt from the diver and install.
2, because the utility model adopts and land essentially identical conventional dry type tree, all devices can adopt standard and ready-made model, long service life, and automaticity is high, and its operation, operation and maintenance maintenance are convenient, and cost is relatively low; Production tree and relevant device thereof with transfer together with the underwater well head cabin is after ground installs, shortened the activity duration;
3, because the utility model underwater well head cabin is arranged in water on floating drum rather than on the water surface floating type process units, the weight of the weight of production tree and bottom rigid riser floating drum in water is born, with conventional floating oil production system, compare, the utility model has alleviated the supporting power of water surface floating type process units, has avoided the problems such as water surface floating type process units dynamic loading is excessive;
4, underwater well head of the present utility model cabin is arranged on floating drum rather than seabed in the water of certain depth under water, with the submerged production system that is installed on seabed of routine, compare, the utility model has been avoided the I&M operation of super deepwater environment, reduce task difficulty and, to the requirement of equipment, promoted safety and reliability;
5, in water of the present utility model, floating drum is positioned at certain depth rather than sea under water, has alleviated the impact of the environmental loads such as sea surface wind, wave, stream, and has gone for different operating water depths, and its feasibility and work capacity are greatly improved; Go for the profound water marine oil gas field exploitation more than 3000 meters.
The accompanying drawing explanation
The utility model has 2 accompanying drawings, wherein:
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is underwater well head of the present utility model cabin schematic diagram.
In figure: 1, provisional guide seats, 2, leading truck, 3, hydraulic connector, 4, dry type tree, 5, floating drum well head head in water, 6, sea, 7, sea bed, 8, the underwater well head cabin, 9, ROV, 10, subsea wellhead installations, 11, tension cables, 12, the bottom rigid riser, 13, floating drum in water, 14, flow line, 15, the top compliant riser, 16, water surface floating type process units, 17, manifold apparatus in water.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, a kind of super deepwater oil-gas development system that adopts dry type tree, comprise manifold apparatus 17, top compliant riser 15, water surface floating type process units 16 in floating drum 13 in water, underwater well head cabin 8, flow line 14, water.
In described water, floating drum 13 is positioned at D(100～400m under water) depth, be fixed on by tension cables 11 pile foundation (figure does not show) that is arranged in sea bed 7 upper, thereby can reduce the motion amplitude of floating drum 13 in water; And, owing to having avoided the stronger environmental load active region of Layer Near The Sea Surface, make floating drum 13 in water there is good performance in place;
In described water, floating drum well head head 5 places are equipped with provisional guide seats 1, are convenient to underwater well head cabin 8 and dock with the accurate of well head head 5.
On sea, following depth D place awaits orders described underwater robot ROV9, carries out necessary monitoring, and completes corresponding auxiliary installation work.
As shown in Figure 2, described dry type tree 4 and relevant device thereof are installed in underwater well head cabin 8, and described underwater well head cabin 8 is arranged in water on floating drum well head head 5.Production tree is arranged in water on floating drum 13, with existing dry type tree application technology waterborne, compare, reduced the technical requirements to water surface floating type process units and water neutral tube system, with existing underwater dry-type Christmas tree, compare, reduce the requirement to wellhead chamber intensity, compressive property and seal etc., compared with the wet-type christmas tree that is installed on seabed, reduced the requirement to hardware, its installation and maintenance are more prone to, and have greatly improved work capacity.
The petroleum resources in seabed is by manifold apparatus 17, top compliant riser 15 in floating drum well head head 5, underwater well head cabin 8, flow line 14, water in subsea wellhead installations 10, bottom rigid riser 12, water, the final water surface floating type process units 16 that arrives is processed, thereby completes the exploitation work of marine oil and gas resource.
Mounting method of the present utility model comprises the following steps:
A, previous work
A1, dry type tree 4 and relevant device and underwater well head cabin 8 install on the coast;
A2, drill ship (in figure, showing) are in place, complete the brill Completion Operations of offshore oil and gas field, and subsea wellhead installations 10 installs;
In A3, water, floating drum 13 installs, and in water, floating drum well head head 5 installs;
A4, complete the tieback of floating drum well head head 5 in subsea wellhead installations 10 and water;
The installation in B, underwater well head cabin
B1, underwater well head cabin 8 use hydraulic connectors 3 are connected on leading truck 2, with drilling rod, the underwater well head cabin is transferred along guide line (not showing in figure) together with hydraulic connector 3, under the provisional guide seats 1 at well head head 5 places auxiliary, complete being connected of hydraulic connector 3 and floating drum well head head 5 in water;
B2, after the sealing pressure testing, drill ship (in figure show) is withdrawn;
The connection of pipeline in C, water
C1, auxiliary by ROV9, being connected of flow line 14 that completes manifold apparatus 17 and underwater well head cabin 8 in water, and being connected of manifold apparatus 17 and top compliant riser 15 lower ends in water;
C2, auxiliary by ROV9, complete the connection of compliant riser 15 upper ends in top to water surface floating type process units 16.
So far, a kind of super deepwater oil-gas development system based on dry type tree installs.
Claims (1)
1. the super deepwater oil-gas development system based on dry type tree, is characterized in that: comprise manifold apparatus (17), top compliant riser (15) and water surface floating type process units (16) in floating drum in water (13), underwater well head cabin (8), dry type tree (4), water;
Described dry type tree (4) and relevant device thereof are installed in underwater well head cabin (8), and described underwater well head cabin (8) is arranged on the well head head (5) of floating drum in water (13); The flow line (14) in underwater well head cabin (8) is connected with the entrance of manifold apparatus in water (17);
Floating drum in described water (13) is positioned at the following degree of depth 100～400m of water surface place, by tension cables (11) mooring on sea bed (7); In water, floating drum well head head (5) is connected by bottom rigid riser (12) with subsea wellhead installations (10); The lower end of described top compliant riser (15) is connected with manifold apparatus in water (17) outlet, and the upper end of top compliant riser (15) is connected with water surface floating type process units (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496104.7U CN203383796U (en) | 2013-08-14 | 2013-08-14 | Ultra-deep water-oil-gas development system based on dry-type Christmas tree |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320496104.7U CN203383796U (en) | 2013-08-14 | 2013-08-14 | Ultra-deep water-oil-gas development system based on dry-type Christmas tree |
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| CN203383796U true CN203383796U (en) | 2014-01-08 |
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| CN201320496104.7U Expired - Fee Related CN203383796U (en) | 2013-08-14 | 2013-08-14 | Ultra-deep water-oil-gas development system based on dry-type Christmas tree |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555480A (en) * | 2018-11-08 | 2019-04-02 | 中国海洋石油集团有限公司 | A kind of quick operation brill completion method based on sub-surface buoy |
| CN114162264A (en) * | 2021-10-20 | 2022-03-11 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Mooring buoy capturing and connecting device |
| CN115613992A (en) * | 2022-12-14 | 2023-01-17 | 中海油能源发展股份有限公司采油服务分公司 | Sealing and connecting device for operation interface of underwater dry-type oil production bin |
-
2013
- 2013-08-14 CN CN201320496104.7U patent/CN203383796U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555480A (en) * | 2018-11-08 | 2019-04-02 | 中国海洋石油集团有限公司 | A kind of quick operation brill completion method based on sub-surface buoy |
| CN114162264A (en) * | 2021-10-20 | 2022-03-11 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Mooring buoy capturing and connecting device |
| CN115613992A (en) * | 2022-12-14 | 2023-01-17 | 中海油能源发展股份有限公司采油服务分公司 | Sealing and connecting device for operation interface of underwater dry-type oil production bin |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20160814 |
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| CF01 | Termination of patent right due to non-payment of annual fee |