CN105003232B - A kind of ultra-deep sea marine oil and gas dry type production system and its installation evacuation method - Google Patents
A kind of ultra-deep sea marine oil and gas dry type production system and its installation evacuation method Download PDFInfo
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- CN105003232B CN105003232B CN201510437967.0A CN201510437967A CN105003232B CN 105003232 B CN105003232 B CN 105003232B CN 201510437967 A CN201510437967 A CN 201510437967A CN 105003232 B CN105003232 B CN 105003232B
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Abstract
The invention discloses a kind of ultra-deep sea marine oil and gas dry type production system and its installation evacuation method, described system includes well head system in mobile production platform, dry type producing equipment, underwater platform, rigid riser system, tension force anchoring system and water.Described rigid riser system, including bottom rigid riser system and top rigid riser system.Ultra-deep sea production platform is designed as a mobile production platform and a underwater platform by the present invention.Because underwater platform undertakes bottom rigid riser system weight, therefore, reduce requirement of the heavy production riser to mobile production platform.Mobile production platform in the present invention realizes mobile shallow water production platform in the marine expanded application of ultra-deep.Compared with the production platform of current ultra-deep sea, structure type is simple, reduces construction cost.Mobile production platform in the present invention is arranged on underwater platform, therefore, avoids the complicated mooring and positioning system needed using current ultra-deep sea production platform.
Description
Technical field
The present invention relates to a kind of offshore and gas development technology, more particularly to a kind of sea for being worked under super abyssal environment
Imported oil gas dry type production system and its installation evacuation method.
Background technology
The petroleum resources at the South Sea is extremely abundant, China to the oil and gas development in South Sea ultra-deep sea area (depth of water is more than 1500 meters) still
In the starting stage.
At present, the Chinese patent (patent No.：ZL201110441883.6 a kind of new ultra-deep-water oil gas field engineering) is disclosed
Development system, the system mainly support oil production equipment in floating drum and water to form by single standpipe, can be by using shallow water (300
Within meter Shui Shen) submerged production equipment be arranged on tension force mooring subduction floating drum on, realize ultra-deep-water oil-gas field development.The system
There are the following problems：
First, due to the subsea production system that the system still uses, therefore installation, use, the cost safeguarded are very high；
Second, because the system subduction floating drum Texas deck space is limited, therefore these subsea production systems can not be floating
Rational layout on cylinder.
Chinese patent (the patent No.：ZL 2013204961047) disclose a kind of " ultra-deep-water oil based on dry type tree
Gas development system ", the system are mainly made up of dry type tree and underwater well head cabin, and dry type tree and relevant device are located at water
In lower wellhead chamber, underwater well head cabin is arranged in water on well head.There are the following problems for the system：
First, because the system is on the underwater platform at underwater 100~400 meters, therefore underwater well head cabin needs to hold
By huge hydrostatic pressure；
Second, underwater well head nacelle product is larger, and each underwater completion device is required for a underwater well head cabin, therefore
It is unfavorable for arranging on underwater platform；
3rd, instrument that the system uses is various, complicated, cost is high.
Existing dry type oil and gas development equipment is with well workover is convenient, running cost is low, downtime is short and flowing security
Good advantage.But because South Sea ultra-deep sea environment condition is extremely severe, also deposited using current conventional dry oil and gas development equipment
In following problem：
First, at present in produce reality, available dry type oil and gas development equipment is limited only to tension leg platform (TLP) and open side type
Platform；
Second, the design requirement that the disastrous Marine Environmental Elements in ultra-deep sea are equipped to dry type oil and gas development is high；
3rd, limited by ultra-deep seawater depth, TLP mooring system is with high costs, it has also become it is stepped to ultra-deep-water
The key constraints entered.Open side type platform construction difficulty is big, and vortex-induced vibration is obvious, and anti-fatigue performance is poor.
4th, under the environmental condition of ultra-deep sea, tension leg platform (TLP), open side type platform installation and withdraw program complexity.
Based on problem above, above-mentioned patent and traditional marine oil and gas production system can not meet to make under super abyssal environment
The requirement of the feasibility and economic serviceability equipped with dry type oil and gas development.
The content of the invention
One is designed to solve existing dry type oil and gas development equipment existing above mentioned problem, present invention under super abyssal environment
Kind can realize the ultra-deep sea marine oil and gas dry type production system and its installation evacuation method of following purpose：
Mobile shallow water production platform can be realized in the marine expanded application of ultra-deep；
The design requirement using dry type producing equipment ultra-deep sea mobile production platform can be reduced；
Structure can be simplified, design is reduced, build, cost of installation and maintenance；
To achieve these goals, technical scheme is as follows：A kind of ultra-deep sea marine oil and gas dry type production system,
Including well head in mobile production platform, dry type producing equipment, underwater platform, rigid riser system, tension force anchoring system and water
System.
Described rigid riser system, including bottom rigid riser system and top rigid riser system.Bottom is rigidly vertical
Guard system is by production of hydrocarbons passage by subsea wellheads system tieback well head system into water, and top rigid riser system is by Accumulation of Hydrocarbon
Produce dry type well head system of the passage by well head system tieback in water to mobile production platform.
Described mobile production platform, for supporting dry type producing equipment and top rigid riser system, pass through decentralization
Four cylindrical legs are fixed on underwater platform.
Described dry type producing equipment, more than sea level, is supported by mobile production platform.
Described underwater platform, at 50~200 meters of b.s.l., for supporting well head system and bottom in water firm
Property riser systems, while brace foundation is provided for portable production platform, it is fixed on by tension force anchoring system on sea bed.
Described tension force anchoring system, including flexible coupling, tension force mooring line and suction anchor.Tension force mooring line top passes through
Flexible coupling connects underwater platform, bottom connection suction anchor, by suction anchor by underwater platform mooring in sea bed.
A kind of installation method of ultra-deep sea marine oil and gas dry type production system, comprises the following steps：
A, before mobile production platform reaches target marine site, first, underwater platform is pre-installed, underwater platform is passed through
Tension force anchoring system mooring is on sea bed；Then, using bottom rigid riser system by subsea wellheads system tieback into water put down
Well head system in the water of platform；Finally, tension force anchoring system is adjusted, completes the work positioning of underwater platform.
B, by mobile production platform towage to target marine site, four cylindrical legs are transferred to from underwater platform upper deck
The place of 3-5 rice, pause decentralization.Then well location and spud can groove location are determined under the auxiliary of tugboat, is completed in place.
C, the spraying system carried using mobile production platform spud leg rinses the spud can groove of cleaning underwater platform, right
Under the wind answered, the working window of unrestrained very little, whole spud legs are synchronously transferred in the spud can groove of underwater platform rapidly, and completed solid
Stake operation.
D, after completing solid stake, start mobile production platform jacking system, mobile production platform main hull is risen to
Sea level above certain altitude, avoid the effect of wave and stream.The ballast water of underwater platform is constantly adjusted simultaneously, to ensure in water
Platform possesses enough buoyancy.
Top rigid riser system is installed E, in tieback water well head system to mobile production platform dry type well head system,
Production of hydrocarbons passage is got through, carries out production operation.
A kind of evacuation method of ultra-deep sea marine oil and gas dry type production system, comprises the following steps：
A, when mobile production platform needs to withdraw, well head system in water is closed, reclaims top rigid riser system；
B, transfer at mobile production platform main hull to predetermined water line；
C, mobile production platform main hull ballast water is arranged, starts jacking system and spud leg is risen to predetermined altitude；Simultaneously
Underwater platform ballast water is adjusted, is allowed to be unlikely to provide hightension for bottom rigid riser system and tension force anchoring system；
D, dragged away from using tugboat.
Compared with prior art, the invention has the advantages that：
1st, ultra-deep sea production platform is designed as a mobile production platform and a underwater platform by the present invention.Due to water
Middle platform undertakes bottom rigid riser system weight, therefore, reduces heavy production riser and mobile production platform is wanted
Ask.
2nd, the underwater platform in the present invention is at bmsl 50~200 meters, it will be apparent that reduces sea calamity
Effect of the evil property environmental key-element to underwater platform.
3rd, in normal operation, its main hull is risen the mobile production platform in the present invention by four spud leg supports
To sea level above certain altitude, therefore, main hull is no longer acted on by wave and stream loading, hence it is evident that reduces whole system institute
The wave force and stream loading active force received.
4th, the mobile production platform in the present invention realizes mobile shallow water production platform and answered in the marine extension of ultra-deep
With.Compared with the production platform of current ultra-deep sea, structure type is simple, reduces construction cost.
5th, the present invention in mobile production platform when mounted, it is only necessary to select suitable working window, sea aid in
Pitching pile is carried out under the auxiliary of ship, avoids using large-scale installation vessel, reduces installation risk and cost.Withdrawing simultaneously
When, it is only necessary to decline at main hull to predetermined drinking water, carry out pile pulling operation, therefore it is simple to withdraw program, shortens the departure time.
6th, the mobile production platform in the present invention is arranged on underwater platform, therefore, is avoided using current ultra-deep sea
The complicated mooring and positioning system that production platform needs.
7th, with the Chinese patent (patent No.：ZL 2011104418836), the Chinese patent (patent No.：
ZL2013204961047) and in current produce reality, available dry type oil and gas development equips (tension leg platform (TLP) and open side type
Platform) compare, the dry type well head system and dry type producing equipment that the present invention uses, it is easy to the cloth on mobile production platform
Office, there is operation easy to maintenance, efficiency high, be easy to the advantages of control.Therefore, there is obvious Technical Economy.
Brief description of the drawings
The shared accompanying drawing 11 of the present invention is opened, wherein
Fig. 1 is that the present invention has installed underwater platform in place.
Fig. 2 is the top view of underwater platform of the present invention.
Fig. 3 is mobile production platform of the present invention.
Fig. 4 is mobile production platform top view of the present invention.
Fig. 5 is that mobile production platform of the present invention moves boat to target marine site schematic diagram.
Fig. 6 is that mobile production platform of the present invention reaches target marine site, transfers spud leg schematic diagram.
Fig. 7 is that mobile production platform of the present invention installs schematic diagram in place.
Fig. 8 is the schematic diagram after present invention installation top rigid riser system.
Fig. 9 is that the schematic diagram after the rigid riser system of bottom is reclaimed when the present invention is withdrawn.
Figure 10 is lifting spud leg schematic diagram when the present invention is withdrawn.
Figure 11 is that mobile production platform of the present invention withdraws schematic diagram.
In figure：1st, underwater platform, 2, spud can groove, 3, well head system in water, 4, bottom rigid riser system, 5, submarine well
Port system, 6, tension force anchoring system, 7, sea bed, 8, sea level, 9, cylindrical leg, 10, spud can, 11, main hull, 12, on
Portion's rigid riser system.
Embodiment
The present invention will be described with reference to the accompanying drawings and examples.
As shown in figs. 1-11, a kind of ultra-deep sea marine oil and gas dry type production system, including the life of mobile production platform, dry type
Well head system 3 in production equipment, underwater platform 1, rigid riser system, tension force anchoring system 6 and water.
Described rigid riser system, including bottom rigid riser system 4 and top rigid riser system 12.Bottom rigidity
Riser systems 4 are by production of hydrocarbons passage by the tieback of subsea wellheads system 5 well head system 3 into water, top rigid riser system 12
Dry type well head system by production of hydrocarbons passage by the tieback of well head system in water 3 to mobile production platform.
Described mobile production platform, for supporting dry type producing equipment and top rigid riser system 12, under
Four cylindrical legs 9 are put to be fixed on underwater platform 1.
Described dry type producing equipment, positioned at sea level more than 8, is supported by mobile production platform.
Described underwater platform 1, positioned at sea level below 8 at 50~200 meters, for support in water well head system 3 and under
Portion's rigid riser system 4, while brace foundation is provided for portable production platform, sea bed 7 is fixed on by tension force anchoring system 6
On.
Described tension force anchoring system 6, including flexible coupling, tension force mooring line and suction anchor.Tension force mooring line top leads to
Cross flexible coupling connection underwater platform 1, bottom connection suction anchor, by suction anchor by the mooring of underwater platform 1 in sea bed 7.
The installation evacuation method of the present invention is as follows：
As shown in figure 1, underwater platform 1 completes installation positioning by tension force anchoring system 6, using bottom rigid riser system
4 by the tieback of subsea wellheads system 5 well head system 3 into water.
As shown in Fig. 2 it is the top view of underwater platform 1.
As shown in figure 3, it is the mobile production platform in transit condition.
As shown in figure 4, it is mobile production platform top view.
When mobile production platform is moved when boat carries out production operation to target marine site, it is necessary to carry out following operate：
As shown in figure 5, after underwater platform 1 is installed in place, mobile production platform moves boat to target marine site.
As shown in fig. 6, after mobile production platform reaches target marine site, four cylindrical legs 9 are transferred, when spud can 10
There was only the place pause decentralization of 3-5 rice apart from underwater platform 1.Spud can groove 2 is cleared up using the spraying system carried.
As shown in fig. 7, mobile production platform location of well under the auxiliary of workboat, is completed in place.Suitably working
Under window, cylindrical leg 9 is transferred rapidly, made in the smooth tripping in spud can groove 2 of spud can 10, spud leg is completed and fixes.Rise sea
Face mobile production platform main hull 11 is to sea above predetermined altitude.Meanwhile constantly discharge the ballast water of underwater platform 1, adjust
Tension force anchoring system 6 is saved, to ensure that underwater platform 1 can effectively support mobile production platform, meanwhile, also can be that bottom is firm
Property riser systems 4 and tension force anchoring system 6 provide enough top tensile forces.
As shown in figure 8, installation top rigid riser system 12, by the tieback of well head system in water 3 to mobile production platform
Dry type well head system, open production of hydrocarbons passage, carry out production operation.
When withdrawing mobile production platform, it is necessary to carry out following operate：
As shown in figure 9, closing producing well, top rigid riser system 12 is reclaimed, closes well head system 3 in water.
As shown in Figure 10, mobile production platform main hull 11 is dropped at predetermined water line, meanwhile, constantly to water
Ballast water is injected in middle platform 1, regulation tension force anchoring system 6, ensures that underwater platform 1 can be the He of bottom rigid riser system 4
Tension force anchoring system 6 provides suitable tensile force.Raising whole cylindrical leg 9 makes spud can 10 extract spud can groove 2.
As shown in figure 11, cylindrical leg 9 is promoted to predetermined altitude, mobile production platform moves boat to next target
Marine site.
Claims (3)
1. a kind of ultra-deep sea marine oil and gas dry type production system, including mobile production platform, dry type producing equipment, underwater platform
(1), well head system (3) in rigid riser system, tension force anchoring system (6) and water；
Described underwater platform (1), at sea level (8) below 50~200 meters, for support well head system in water (3) and
Bottom rigid riser system (4), while brace foundation is provided for portable production platform, it is fixed by tension force anchoring system (6)
On sea bed (7)；
Described tension force anchoring system (6), including flexible coupling, tension force mooring line and suction anchor；Tension force mooring line top passes through
Flexible coupling connection underwater platform (1), bottom connection suction anchor, by suction anchor by underwater platform (1) mooring in sea bed (7)；
It is characterized in that：Described rigid riser system, including bottom rigid riser system (4) and top rigid riser system
(12)；Bottom rigid riser system (4) by production of hydrocarbons passage by subsea wellheads system (5) tieback well head system (3) into water,
Dry type of the top rigid riser system (12) by production of hydrocarbons passage by (3) tieback of well head system in water to mobile production platform
Well head system；
Described mobile production platform, for supporting dry type producing equipment and top rigid riser system (12), pass through decentralization
Four cylindrical legs (9) are fixed on underwater platform (1)；
Described dry type producing equipment, more than sea level (8), supported by mobile production platform.
A kind of 2. installation method of ultra-deep sea as claimed in claim 1 marine oil and gas dry type production system, it is characterised in that：Bag
Include following steps：
A, before mobile production platform reaches target marine site, first, pre-installation underwater platform (1) is logical by underwater platform (1)
(6) mooring of overtension anchoring system is on sea bed (7)；Then, using bottom rigid riser system (4) by subsea wellheads system
(5) tieback well head system (3) into the water of underwater platform (1)；Finally, tension force anchoring system (6) is adjusted, completes underwater platform
(1) work positioning；
B, by mobile production platform towage to target marine site, four cylindrical legs (9) are transferred to from first on underwater platform (1)
The place of plate 3-5 rice, pause decentralization；Then well location and spud can groove (2) position are determined under the auxiliary of tugboat, is completed in place；
C, the spraying system carried using mobile production platform spud leg rinses the spud can groove (2) of cleaning underwater platform (1),
Corresponding wind, unrestrained very little working window under, whole spud legs are synchronously transferred in the spud can groove (2) of underwater platform (1) rapidly,
And complete solid stake operation；
D, after completing solid stake, start mobile production platform jacking system, mobile production platform main hull (11) is risen to
Sea level (8) above certain altitude, avoid the effect of wave and stream；The ballast water of underwater platform (1) is constantly adjusted simultaneously, to protect
Card underwater platform (1) possesses enough buoyancy；
Top rigid riser system (12) E, is installed, well head system (3) is to mobile production platform dry type well head system in tieback water
System, production of hydrocarbons passage is got through, carry out production operation.
A kind of 3. evacuation method of ultra-deep sea as claimed in claim 1 marine oil and gas dry type production system, it is characterised in that：Bag
Include following steps：
A, when mobile production platform needs to withdraw, well head system (3) in water is closed, reclaims top rigid riser system
(12)；
B, transfer at mobile production platform main hull (11) to predetermined water line；
C, mobile production platform main hull (11) ballast water is arranged, starts jacking system and spud leg is risen to predetermined altitude；Simultaneously
Underwater platform (1) ballast water is adjusted, is allowed to be unlikely to provide for bottom rigid riser system (4) and tension force anchoring system (6)
Hightension；
D, dragged away from using tugboat.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106522896B (en) * | 2016-12-02 | 2019-01-11 | 大连理工大学 | Production support floating drum and its installation and recovery method under a kind of Double-layer water |
| CN108533232B (en) * | 2018-03-09 | 2020-03-10 | 中国石油大学(北京) | Underwater suspension cluster manifold system |
| CN112502658A (en) * | 2020-10-19 | 2021-03-16 | 中海石油(中国)有限公司 | Installation method of oil gas production wet type protection structure located under seabed mud surface |
| CN112727408A (en) * | 2020-12-03 | 2021-04-30 | 中海石油(中国)有限公司 | Installation method of oil-gas production dry-type protection structure located under seabed mud surface |
| CN113605440B (en) * | 2021-08-24 | 2022-03-04 | 江苏科技大学 | Deep sea rock seabed suction anchor applying bionic adhesion device |
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| CN103397871A (en) * | 2013-08-14 | 2013-11-20 | 大连理工大学 | Dry-type Christmas tree based ultra-deepwater oil and gas development system and mounting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130284447A1 (en) * | 2012-04-25 | 2013-10-31 | Seahorse Equipment Corp | Dry Tree Semi-Submersible With Reduced-Height Drilling Floor |
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| GB2099894A (en) * | 1981-05-27 | 1982-12-15 | Treasure Offshore Production S | Offshore oil and/or gas production structure and method |
| CN102220849A (en) * | 2011-04-28 | 2011-10-19 | 大连理工大学 | Installing and guiding system of propping-tensioning vertical pipe and using and recovery methods thereof |
| CN102514692A (en) * | 2011-12-24 | 2012-06-27 | 大连理工大学 | Ultradeep sea oil-gas field engineering development system |
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| CN103397871A (en) * | 2013-08-14 | 2013-11-20 | 大连理工大学 | Dry-type Christmas tree based ultra-deepwater oil and gas development system and mounting method thereof |
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