CN114435552B - Large-scale three stand semi-submerged formula oil storage production platform of high performance - Google Patents
Large-scale three stand semi-submerged formula oil storage production platform of high performance Download PDFInfo
- Publication number
- CN114435552B CN114435552B CN202011219003.6A CN202011219003A CN114435552B CN 114435552 B CN114435552 B CN 114435552B CN 202011219003 A CN202011219003 A CN 202011219003A CN 114435552 B CN114435552 B CN 114435552B
- Authority
- CN
- China
- Prior art keywords
- oil
- horizontal
- oil storage
- platform
- semi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003860 storage Methods 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 56
- 239000003921 oil Substances 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000007667 floating Methods 0.000 claims abstract description 44
- 239000010779 crude oil Substances 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000001629 suppression Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 239000013535 sea water Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000037147 athletic performance Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a high-performance large three-upright semi-submersible oil storage production platform, which comprises: the floating body comprises three equal-size upright posts and three equal-size watertight rectangular horizontal buoyancy tanks connected with the bottoms of the upright posts, an angle cabin is arranged at the included angle of two adjacent buoyancy tanks to form a triangular annular lower floating body, a watertight dry buoyancy cabin and an oil-water replacement wet oil storage device are arranged in the upright posts, a platform positioning mooring system is arranged on the upright posts, and a vertical pipe hanging device is arranged on the triangular annular lower floating body; the superstructure comprises three upper modules and three gallery bridge trusses which form a triangular superstructure structure, and a crude oil output system is arranged on one upper module. The oil storage production platform has the advantages of simple ship shape, good stability and motion performance, high oil storage efficiency, good constructability and high safety, remarkably improves the overall performance and the comprehensive load ratio of the semi-submersible oil storage production platform, and greatly improves the economy of the platform.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to a high-performance large-scale three-upright semi-submersible oil storage production platform.
Background
The deep water floating production platform is a main facility for deep water oil field development, and as one of typical floating platform concepts, the semi-submersible platform has a development course of more than fifty years and has wide application in marine oil and gas development. Along with the expansion of ocean oil gas development to deep sea areas, the semi-submersible production platform technology gradually develops from small and medium-sized single functions to multifunctional integrated comprehensive platforms, such as drilling, production, oil storage, drilling, production and oil storage, and the requirements on the loading capacity of the platform are greatly improved, and the drainage capacity is also greatly increased.
For a large semi-submersible platform with 2 ten thousand tons of upper production facilities and 2 ten thousand square oil storage functions, the existing traditional four-upright semi-submersible ship is adopted, and the design displacement is usually about 10 ten thousand tons. Although the technology has the advantage of mature technology, the disadvantage is that the steel is large in amount, the construction and installation cost is high, and the movement performance is also insufficient; particularly, the 2-ten thousand-ton-level ultra-large upper facility assembly module and the semi-submersible hull are in butt joint integration, ultra-large lifting equipment with 2-ten-thousand-ton-level lifting capacity is required, the difficulty is high, the risk is high, and only few shipyards in the world can be built.
Chinese patent CN201610633132.7 proposes a high effective load ratio light semi-submersible production platform, adopts a three-upright semi-submersible ship type, has good economy, is suitable for medium and small marginal oil fields, but has the defects of no oil storage capacity, smaller effective load of upper facilities and certain limitation on applicable water depth.
The payload ratio is an important indicator of the weight of the floating production platform, defined as the ratio of the upper facility payload weight to the lower floating body steel weight of the platform. For a floating oil storage production platform, the integrated load ratio is defined as the ratio of the upper facility weight of the platform plus the oil storage weight to the lower float steel weight. Under the same conditions, the higher the integrated load ratio, the higher the floating body efficiency of the floating platform, and the better the overall economy.
The wet oil storage by oil-water displacement is to store crude oil and ballast water in the same oil storage tank, and according to the principle of physics, oil and water naturally form an oil-water interface to isolate the oil from the water because the density of the oil is lower than that of the water, and the oil floats on the water. Dry storage typically separates oil from ballast water, and therefore requires the provision of a ballast water tank of comparable volume to that of the storage, which is one time the volume of the oil-water displacement wet storage, greatly increasing the cost of the overall storage. The oil-water replacement oil storage can obviously reduce the oil storage cost, and can avoid the risk that the volatilization of the crude oil in the traditional dry oil storage can cause combustion explosion accidents. Since 1960, the technology was applied to the gulf of mexico, and is widely applied to a plurality of shallow water stationary platforms such as the gulf of bos, the north sea, canada and the like, but has not been applied to a floating deep water semi-submersible platform. The conventional dry type oil storage is generally adopted in the existing large-scale semi-submersible type oil storage platform, and the cost is high.
In summary, there are many areas where the conventional large-scale semi-submersible oil storage production platform needs to be improved in terms of effective load ratio, economy and athletic performance, and it is necessary to develop a large-scale semi-submersible oil storage production platform with better economy and athletic performance, so as to meet the requirements of deep water large-scale oil and gas field development.
Disclosure of Invention
The present invention aims to solve, at least to some extent, one of the above technical problems in the prior art. In view of the above, the invention needs to provide a high-performance large-scale three-upright-column semi-submersible oil storage production platform which has the advantages of simple ship shape, good stability and motion performance, high oil storage efficiency, good constructability and high safety, obviously improves the overall performance and the comprehensive load ratio of the semi-submersible oil storage production platform, and greatly improves the economy of the platform.
The invention provides a high-performance large three-upright semi-submersible oil storage production platform, which comprises: the floating body comprises three watertight round vertical columns which are equal in size and penetrate through the water surface and three watertight rectangular horizontal buoyancy tanks which are equal in size and correspond to the connection of the bottoms of the columns, an angle cabin is arranged at an included angle between two adjacent buoyancy tanks, a triangular annular lower floating body is formed, a watertight dry buoyancy cabin and an oil-water replacement wet oil storage device are arranged in the columns, a platform positioning mooring system is arranged on the outer wall of each column, and a vertical pipe hanging device is arranged outside each triangular annular lower floating body; the superstructure comprises an upper module and rectangular horizontal gallery bridge trusses, wherein the upper module is of three independent structures and is respectively arranged at the top ends of three upright posts, and the gallery bridge trusses are three and are sequentially connected with the three upper modules in the clockwise direction to form a triangular superstructure structure, and one upper module is provided with a crude oil output system.
According to one embodiment of the invention, the heave suppression device comprises three horizontal side heave plates and one horizontal middle heave plate, wherein the horizontal side heave plates are respectively connected with the outer side of the bottom of the triangular annular lower floating body, each horizontal side heave plate is of a rectangular continuous or discontinuous plane structure, each horizontal side heave plate extends to the other end along one end of the outer side of the bottom of the buoyancy tank, each horizontal side heave plate is provided with a reinforcing rib, one end of each horizontal side heave plate, which is far away from the buoyancy tank, is connected with a simple plane plate or a connecting vertical plate, and forms an L or T-shaped section; the horizontal heave plate is positioned at the center of the bottom of the triangular annular lower floating body, the horizontal heave plate is triangular, three peripheries of the horizontal heave plate are respectively connected with three side walls of the buoyancy tank through a plurality of vertical connecting plates, the horizontal heave plate is of a continuous plane structure, reinforcing ribs are arranged in the horizontal heave plate, the side edges of the horizontal heave plate can be simple plane plates or vertical connecting plates, and an L-shaped or T-shaped section is formed.
According to one embodiment of the invention, the upper module is a truss structure and comprises at least an upper horizontal deck and a lower horizontal deck, and is used for arranging oil and gas production facilities and living facilities, wherein three upper modules are respectively a processing module, a public module and a living module, central control equipment is arranged on the living module to remotely control the processing module and equipment on the public module, and an upper pedestrian channel and a lower pedestrian channel which are respectively connected with the upper horizontal deck and the lower horizontal deck of the upper module are arranged in the truss of the gallery.
According to one embodiment of the invention, the platform positioning mooring system comprises an anchor provided at the top end of the column, a chain guide and a chain anchor extending downwardly through the chain guide at the bottom of the column by the anchor and further to the seabed.
According to one embodiment of the invention, the crude oil export system comprises an export platform and a set of export equipment, wherein the export platform is connected with a lower horizontal deck in the processing module, and the export equipment comprises an export hose roller and an export cable winch which are arranged on the export platform.
According to one embodiment of the invention, the riser suspension devices are plural and each comprises a riser connector and a riser support structure provided on the outer side wall of the buoyancy tank, the riser connector being fixed to the riser support structure.
According to one embodiment of the invention, two ends of the upright support rod are respectively connected with the bottom of the upper module and the top end of the upright, and two ends of the upright diagonal brace are respectively connected with the side wall of the upright and the gallery bridge truss.
According to one embodiment of the invention, the upright comprises an upper section, a middle section and a lower section with the same radial dimension, and a horizontal watertight deck is arranged between the upper section and the middle section and between the middle section and the lower section.
According to one embodiment of the invention, the oil-water replacement wet-type oil storage device comprises an oil storage cabin, a buffer cabin, an oil inlet pipe, an oil outlet pipe, a water inlet pipe, a water outlet pipe and an oil-water replacement manifold, wherein the section of the oil storage cabin is circular and is positioned in the middle section of the upright post, crude oil and water are always filled in the oil storage cabin, the buffer cabin is circular and is positioned on the outer side of the oil storage cabin, and an annular double-layer bulkhead structure is formed by the buffer cabin, the inner wall of the upright post and the outer wall of the oil storage cabin, and liquid level meters are arranged in the oil storage cabin and the buffer cabin.
According to one embodiment of the invention, the oil-water displacing manifold is located at the top end of the upright, and comprises a flowmeter, a valve and a jumper pipe, wherein the jumper pipe is respectively connected with the oil inlet pipe, the oil outlet pipe, the water inlet pipe and the water outlet pipe.
The high-performance large three-upright-post semi-submersible type oil storage production platform has the advantages that the adopted three-upright-post semi-submersible type floating body is provided with the heave suppression device, the oil-water replacement wet type oil storage technology is utilized, the overall performance and the comprehensive load ratio of the semi-submersible type oil storage production platform are obviously improved, meanwhile, the high-performance large three-upright-post semi-submersible type oil storage production platform has the loading capacity of twenty-thousand tons of upper facilities and the two-thousand-square oil storage function, and compared with the existing semi-submersible type oil storage production platform, the total cost of construction and installation engineering can be effectively reduced by more than 20%, and the economical efficiency of the semi-submersible type oil storage production platform is greatly improved; the upper modules are distributed and controlled by remote operation, so that the constructability and safety of the semi-submersible type oil storage production platform are remarkably improved, and a safer and more efficient technical solution is provided for deep water oil gas development.
Drawings
FIG. 1 is a perspective view of a high performance large three-column semi-submersible storage production platform in accordance with the present invention.
Fig. 2 is a front view of a high performance large three-column semi-submersible production platform according to the present invention.
FIG. 3 is a top view of a high performance large three-column semi-submersible production platform according to the present invention.
Fig. 4 is a schematic diagram of a cross-sectional and oil-water displacement wet storage device for a column of a high performance large three-column semi-submersible storage production platform according to the present invention.
Reference numerals: 1-a floating body; 2-superstructure; 3-an oil-water replacement wet type oil storage device; 4-a platform positioning mooring system; 5-heave suppression means; 6-riser suspension; 8-crude oil output system; 11-stand columns; 12-floating box; 13-corner capsule; 21-upper module; 22-gallery bridge truss; 23-a processing module; 24-a common module; 25-living module; 26-pedestrian pathway; 31-an oil storage tank; 32-buffer cabin; 33-an oil inlet pipe; 34-an oil outlet pipe; 35-a water inlet pipe; 36-a water outlet pipe; 37-oil-water displacement manifold; 38-an inner water pipe; 51-horizontal side heave plate; 52-a horizontal heave plate; 53-vertical connection plates; 71-a column support rod; 72-upright diagonal bracing; 100-water surface; 101-crude oil; 102-water; 103-oil-water interface.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 4, a three-column type semi-submersible type floating body 1 with a wet oil storage cabin, a distributed superstructure 2 positioned at the top end of the floating body 1, a set of heave suppressing devices 5 positioned at the bottom of the floating body 1, and a set of column supporting rods 71 and column diagonal rods 72 for connecting the floating body 1 with the superstructure 2, wherein the floating body 1 comprises three equal-sized watertight round vertical columns 11 penetrating through the water surface and three equal-sized watertight rectangular horizontal buoyancy tanks 12 corresponding to the connection of the bottom of the columns 11, an angle cabin 13 is arranged at the included angle between two adjacent buoyancy tanks 12, and a triangular annular lower floating body is formed, and it is to be understood that the included angle between two adjacent buoyancy tanks 12 is sixty degrees, the watertight dry buoyancy cabin and the oil-water displacement wet oil storage device 3 are arranged inside the columns 11, a platform positioning floating body mooring system 4 is arranged on the outer walls of the columns 11, and a vertical pipe hanging device 6 is arranged on the outer sides of the triangular annular lower sides; the superstructure 2 comprises three upper modules 21 and rectangular horizontal gallery truss 22, wherein the upper modules 21 are three independent and are respectively arranged at the top ends of the three upright posts 11, and the gallery truss 22 is sequentially connected with the three upper modules 21 along the clockwise direction to form a triangular superstructure structure, wherein one upper module 21 is provided with a crude oil output system 8.
The three-upright semi-submersible type oil storage production platform has the advantages that the adopted three-upright semi-submersible type floating body is provided with the heave suppression device 5, the total performance and the comprehensive load ratio of the semi-submersible type oil storage production platform are obviously improved by utilizing the oil-water replacement wet type oil storage technology, the semi-submersible type oil storage production platform has the loading capacity of twenty-thousand tons of upper facilities and the oil storage function of two tens of thousands of feet, and compared with the existing semi-submersible type oil storage production platform, the total cost of construction and installation engineering is effectively reduced by more than 20%, and the economical efficiency of the semi-submersible type oil storage production platform is greatly improved; the upper modules 21 are distributed and controlled by remote operation, so that the constructability and safety of the semi-submersible type oil storage production platform are effectively improved, and a safer and more efficient technical solution is provided for deep water oil gas development.
As shown in fig. 1 and 3, the heave damping apparatus 5 includes three horizontal side heave plates 51 and one horizontal middle heave plate 52, which are respectively connected to the outer sides of the bottoms of the three buoyancy tanks 12, the horizontal side heave plates 51 are rectangular continuous or discontinuous planar structures, each horizontal side heave plate 51 is horizontally arranged and extends from one end to the other end of the outer sides of the bottoms of the buoyancy tanks 12, holes can be formed in the horizontal side heave plates 51 according to actual requirements, and the horizontal side heave plates 51 are provided with reinforcing ribs, one end of each horizontal side heave plate far away from the buoyancy tank 12 is connected with a simple planar plate or a connecting vertical plate, and an L-shaped or T-shaped section is formed, so that additional mass and damping are effectively increased, and heave motion performance of the semi-submersible oil storage production platform is improved; the horizontal heave plate 52 is horizontally arranged at the center of the bottom of the triangular annular lower floating body, the horizontal heave plate 52 is triangular, three peripheries of the horizontal heave plate are respectively connected with the side wall of the triangular annular lower floating body through a plurality of vertical connecting plates 53, gaps between the outer wall of the horizontal heave plate 52 and the inner wall of the triangular annular lower floating body can be flexibly selected through the length of the vertical connecting plates 53, the horizontal heave plate 52 is of a continuous plane structure, reinforcing ribs are arranged in the horizontal heave plate 52, holes can be formed according to actual requirements, the side edges of the horizontal heave plate can be simple plane plates or connected with the vertical plates, and an L or T-shaped section is formed, so that additional mass and damping can be effectively increased, and heave motion performance of the semi-submersible type oil storage production platform can be improved.
As shown in fig. 1 to 3, the upper module 21 is in a truss structure and comprises at least an upper horizontal deck and a lower horizontal deck, and is used for arranging equipment, wherein three upper modules 21 are respectively a processing module 23, a public module 24 and a living module 25, a central control device is arranged on the living module 25 to remotely control the processing module 23 and equipment on the public module 24, it is to be understood that the processing module 23 mainly comprises processing equipment in oil and gas production, the public module 24 mainly comprises a generator and fresh water production equipment, the living module 25 mainly comprises a living building, a helicopter platform and the like, the processing module 23 and the public module 24 adopt unmanned intelligent design, and can be remotely controlled through the living module 25, so that the safety and operability of the platform are greatly improved, the cost of platform operators can be reduced, each upper module 21 can be integrally hoisted to the top end of the upright post 11 respectively by using conventional kiloton-level hoisting equipment, the installation difficulty is greatly reduced, and simultaneously the weight of the upper module 21 is respectively distributed at the top end of the upright post 11 far away from the geometric center of the semi-submersible production platform, so that the geometrical inertia of the semi-submersible platform is greatly reduced, the rolling platform is increased, the rolling platform is greatly reduced, the rolling platform is produced, and the rolling platform is greatly rolled down, and the rolling platform is greatly is lowered.
As shown in fig. 1 to 3, upper and lower pedestrian passages 26 connected to the upper and lower horizontal decks of the upper modules 21 are provided in the gallery bridge trusses 22, respectively, extending from one upper module 21 to the other upper module 21, wherein the angle between the adjacent two gallery bridge trusses 22 is set to be typically sixty degrees.
As shown in fig. 1, the platform positioning mooring system 4 comprises an anchor machine, a chain guide and an anchor chain, the anchor machine is arranged at the top end of the upright 11, the anchor chain extends downwards through the chain guide at the bottom of the upright 11 through the anchor machine and further extends to be connected with the sea floor, and it is understood that the platform positioning mooring system 4 is three sets and is respectively arranged on the three uprights 11.
The riser suspension devices 6 are plural and each riser suspension device 6 comprises a riser connector and a riser support structure provided on the outer side wall of the buoyancy tank 12, the riser connector being fixed to the riser support structure.
The crude oil export system 8 comprises an export platform and a set of export equipment, the export platform is connected with the lower horizontal deck in the processing module 23, the export equipment comprises an export hose drum and an export cable winch which are arranged on the export platform, and it is understood that the platform positioning mooring system 4, the vertical pipe hanging device 6 and the crude oil export system 8 are all prior art equipment, and are not described herein.
As shown in fig. 1 to 3, two ends of the upright post supporting rod 71 are respectively connected with the bottom of the upper module 21 and the top end of the upright post 11, two ends of the upright post diagonal brace 72 are respectively connected with the side wall of the upright post 11 and the gallery bridge truss 22, wherein the position where the upright post diagonal brace 72 is connected with the gallery bridge truss 22 is located at the middle section position of the gallery bridge truss 22, and the structural stability and the structural strength of the oil storage production platform are improved.
As shown in FIG. 1, the upright 11 comprises an upper section, a middle section and a lower section with the same radial dimension, a horizontal watertight deck is arranged between the upper section and the middle section, and between the middle section and the lower section, the upright 11 is a circular vertical upright, most of the middle section and the lower section are positioned below the water surface 100, the diameter of the upright 11 is more than 20 meters, the distance between the centers of the two uprights 11 is more than 85 meters, and the distance between the uprights of the conventional four-upright semi-submersible platform is more than that of the conventional four-upright semi-submersible platform so as to improve the stability of the oil storage production platform, it is to be understood that the three circular vertical uprights 11 form a floating body combination, and the weight ratio of steel weight of the triangular three uprights 11 to the floating body formed by combining the conventional four uprights is under the same water displacement, draft and unit wet surface area steel weightThe weight of steel required by the three-upright-column floating body is reduced by 13.4% compared with that of the four-upright-column floating body, namely, the effective load ratio of the three-upright-column floating body combination adopted by the invention is improved by 13.4% compared with that of the traditional four-upright-column floating body combination under the condition that the load weight of upper facilities is the same.
The oil-water replacement wet oil storage device 3 comprises an oil storage cabin 31, a buffer cabin 32, an oil inlet pipe 33, an oil outlet pipe 34, a water inlet pipe 35, a water outlet pipe 36 and an oil-water replacement manifold 37, wherein the section of the oil storage cabin 31 is round and is positioned in the middle section of an upright post 11, the oil storage cabin 31 is always filled with crude oil 101 and water 102, the crude oil 101 floats on the water surface to form an oil-water interface 103, the water 120 can be seawater, a liquid level meter is arranged in the oil storage cabin 31 and is used for monitoring the position of the oil-water interface 103, when oil is stored, the treated crude oil 101 enters the oil storage cabin 31 through the oil inlet pipe 33, the water 102 with the same volume is discharged through the water outlet pipe 36, when oil is discharged, the crude oil 101 is externally conveyed through the oil outlet pipe 34, and the water 102 with the same volume enters through the water inlet pipe 35, so that the circulation operation is realized by utilizing the same space volume; the buffer cabin 32 is circular and is positioned at the outer side of the oil storage cabin 31, and forms an annular double-layer bulkhead structure with the inner wall of the upright post 11 and the outer wall of the oil storage cabin 31, wherein an inner water pipe 38 is also communicated between the water 102 and the buffer cabin 32, in the oil inlet process, the replaced seawater firstly enters the buffer cabin 32, a small amount of crude oil possibly contained in the replaced seawater is secondarily separated, a liquid level meter is arranged in the buffer cabin 32 and used for monitoring the water level in the buffer cabin 32, and the water quantity in the buffer cabin 32 is regulated through a ballast water pump, and the weight of the water is equal to the volume of the replaced seawater multiplied by the difference between the seawater and the crude oil density, so that the water discharge of a platform is ensured not to be changed in the oil-water replacement process; the oil-water displacing manifold 37 is located at the top end of the upright post 11, and the oil-water displacing manifold 37 comprises a flowmeter, a valve and a jumper pipe, wherein the jumper pipe is respectively connected with the oil inlet pipe 33, the oil outlet pipe 34, the water inlet pipe 35 and the water outlet pipe 36, and the oil-water displacing flow is controlled through the flowmeter and the valve.
The oil-water replacement wet oil storage is adopted, and compared with the traditional dry oil storage, half space can be saved, and the theoretical value of the ratio of the weight of steel in the oil-water replacement wet oil storage cabin to the weight of the conventional dry oil storage cabin is as follows: Further, assuming that the weight of the upper facility is equal to the weight of the oil storage, the ratio of the weight W3C of the floating body steel of the three-upright-column semi-submersible type oil-water displacement wet oil storage production platform to the weight W4C of the floating body steel of the four-upright-column semi-submersible type conventional dry oil storage platform can be calculated as follows: Compared with the traditional semi-submersible oil storage production platform, the comprehensive load ratio can be improved by 26.1%, in a specific embodiment, the existing large four-column semi-submersible oil storage production platform with the upper facility load of twenty thousands of tons and the oil storage capacity of twenty thousands of directions is designed and drained about one hundred thousand tons, the designed and drained theoretical value of the large three-column semi-submersible oil storage production platform can reach seven-point thirty-thousand tons at the minimum, and the drained water amount can not exceed twenty thousand tons in consideration of other load factors such as mooring, stand pipes and the like, and can realize steel saving by more than 20%.
The heave suppression device 5, the upper module 21, the gallery truss 22 and the oil-water displacement wet oil storage device 3 in the invention can be used for other floating bodies, including four-column semi-submersible platforms.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. The utility model provides a large-scale three stand semi-submerged formula oil storage production platform of high performance which characterized in that includes: the floating body comprises three watertight round vertical columns which are equal in size and penetrate through the water surface and three watertight rectangular horizontal buoyancy tanks which are equal in size and correspond to the connection of the bottoms of the columns, an angle cabin is arranged at an included angle between two adjacent buoyancy tanks, a triangular annular lower floating body is formed, a watertight dry buoyancy cabin and an oil-water replacement wet oil storage device are arranged in the columns, a platform positioning mooring system is arranged on the outer wall of each column, and a vertical pipe hanging device is arranged outside each triangular annular lower floating body; the upper building comprises three upper modules and rectangular horizontal gallery bridge trusses, wherein the upper modules are of three independent structures and are respectively arranged at the top ends of the three upright posts, the gallery bridge trusses are three and are sequentially connected with the three upper modules in the clockwise direction to form a triangular upper building structure, and one upper module is provided with a crude oil output system;
The heave suppression device comprises three horizontal side heave plates and a horizontal middle heave plate, wherein the horizontal side heave plates and the horizontal middle heave plate are respectively connected with the outer side of the bottom of the triangular annular lower floating body, each horizontal side heave plate is of a rectangular continuous or discontinuous plane structure, each horizontal side heave plate extends to the other end along one end of the outer side of the bottom of the buoyancy tank, each horizontal side heave plate is provided with a reinforcing rib, one end of each horizontal side heave plate, which is far away from the buoyancy tank, is connected with a simple plane plate or a connecting vertical plate, and an L-shaped or T-shaped section is formed; the horizontal heave plate is positioned at the center of the bottom of the triangular annular lower floating body, the horizontal heave plate is triangular, three peripheries of the horizontal heave plate are respectively connected with the side walls of the three horizontal buoyancy tanks through a plurality of vertical connecting plates, the horizontal heave plate is of a continuous plane structure, reinforcing ribs are arranged in the horizontal heave plate, the side edges of the horizontal heave plate can be simple plane plates or vertical connecting plates, and an L-shaped or T-shaped section is formed;
The wet oil storage device comprises an oil storage cabin, a buffer cabin, an oil inlet pipe, an oil outlet pipe, a water inlet pipe, a water outlet pipe and an oil-water replacement manifold, wherein the section of the oil storage cabin is circular and positioned in the middle section of the upright post, oil and water are always filled in the oil storage cabin, the buffer cabin is circular and positioned on the outer side of the oil storage cabin, and forms an annular double-layer bulkhead structure with the inner wall of the upright post and the outer wall of the oil storage cabin, and liquid level meters are arranged in the oil storage cabin and the buffer cabin.
2. The high-performance large three-upright semi-submersible oil storage production platform according to claim 1, wherein the upper module is of a truss structure and comprises at least an upper horizontal deck and a lower horizontal deck for arranging oil and gas production facilities and living facilities, wherein the three upper modules are respectively a processing module, a public module and a living module, central control equipment is arranged on the living module to remotely control the processing module and equipment on the public module, and an upper pedestrian channel and a lower pedestrian channel which are respectively connected with the upper horizontal deck and the lower horizontal deck of the upper module are arranged in the gallery truss.
3. The high performance large three column semi-submersible production platform of claim 1 wherein the platform positioning mooring system comprises an anchor, a chain guide and an anchor chain, the anchor being provided at the top end of the column, the anchor chain extending downwardly through the chain guide at the bottom of the column through the anchor and further extending into connection with the seafloor.
4. The high-performance large three-column semi-submersible storage production platform of claim 1, wherein the crude oil export system comprises an export platform and a set of export equipment, the export platform is connected with a lower horizontal deck in the processing module, and the export equipment comprises an export hose drum and an export cable winch which are arranged on the export platform.
5. A high performance large three column semi-submersible production platform as recited in claim 1 wherein there are a plurality of riser suspensions, and each of said riser suspensions includes a riser connector and a riser support structure provided on an outer sidewall of said buoyancy tank, said riser connector being secured to said riser support structure.
6. The high-performance large three-upright semi-submersible oil storage production platform according to claim 2, wherein two ends of the upright support rod are respectively connected with the bottom of the upper module and the top end of the upright, and two ends of the upright diagonal bracing rod are respectively connected with the side wall of the upright and the gallery bridge truss.
7. The high-performance large three-column semi-submersible storage production platform of claim 1, wherein the columns comprise an upper section, a middle section and a lower section with the same radial dimensions, and horizontal watertight decks are arranged between the upper section and the middle section, and between the middle section and the lower section.
8. The high-performance large three-column semi-submersible storage production platform of claim 1, wherein the oil-water displacing manifold is located at the top end of the column, and comprises a flowmeter, a valve and a jumper pipe, and the jumper pipe is connected with the oil inlet pipe, the oil outlet pipe, the water inlet pipe and the water outlet pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219003.6A CN114435552B (en) | 2020-11-04 | 2020-11-04 | Large-scale three stand semi-submerged formula oil storage production platform of high performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219003.6A CN114435552B (en) | 2020-11-04 | 2020-11-04 | Large-scale three stand semi-submerged formula oil storage production platform of high performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114435552A CN114435552A (en) | 2022-05-06 |
| CN114435552B true CN114435552B (en) | 2024-10-01 |
Family
ID=81362028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011219003.6A Active CN114435552B (en) | 2020-11-04 | 2020-11-04 | Large-scale three stand semi-submerged formula oil storage production platform of high performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114435552B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771595B (en) * | 2022-12-20 | 2024-11-08 | 中电建海上风电工程有限公司 | Novel semi-submersible type lifting platform and offshore wind power hoisting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214190025U (en) * | 2020-11-04 | 2021-09-14 | 中国海洋石油集团有限公司 | High-performance large three-upright-column semi-submersible type oil storage production platform |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912245B (en) * | 2012-08-07 | 2017-12-19 | 中国海洋石油总公司 | Deepwater drilling produces vertical oil storage platform and its operating method |
| CN105905470A (en) * | 2016-05-27 | 2016-08-31 | 中国海洋石油总公司 | Oil-water replacement process for crude oil storing and discharging of single-column platform |
| CN107914834B (en) * | 2017-12-12 | 2023-08-29 | 中海油能源发展股份有限公司 | Polygonal floating type oil storage device for production |
-
2020
- 2020-11-04 CN CN202011219003.6A patent/CN114435552B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214190025U (en) * | 2020-11-04 | 2021-09-14 | 中国海洋石油集团有限公司 | High-performance large three-upright-column semi-submersible type oil storage production platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114435552A (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110139798B (en) | Straight cylinder type floating platform and swimming life buoy type floating cylinder set with extension cylinder | |
| AU2009229435B2 (en) | Liquid storing and offloading device and drilling and production installations on the sea based thereon | |
| CN103917439B (en) | Offshore platform with outriggers | |
| US4666340A (en) | Offshore platform with removable modules | |
| US3191388A (en) | Slender column support for offshore platforms | |
| CN107792306B (en) | Buoyancy tower platform | |
| CN105151236B (en) | Floating pier and tower type submersible floating mobile carrying platform device and working method thereof | |
| CN104321247A (en) | Ring wing floating platform | |
| CN107653895B (en) | A combined offshore six-buoy pontoon basic structure and its construction method | |
| JP2013521170A (en) | Tension mooring platform with improved hydrodynamic performance | |
| CN107697238A (en) | A kind of dry tree semi-submerged platform of deep water floating type multifunctional and its offshore installation method | |
| US4265568A (en) | Gravity base, jack-up platform - method and apparatus | |
| CN111942533A (en) | A three-column type offshore wind power generation platform system | |
| CN109866887A (en) | The oblique self-stabilization type semi-submerged platform of column outside a kind of band | |
| CN212951052U (en) | Three-upright-column offshore wind power generation platform system | |
| CN104805821B (en) | Marine oil field natural gas compressing processes jack-up unit | |
| CN108374430A (en) | A kind of marine submersible basis and auxiliary floating apparatus and construction method entirely | |
| CN214190025U (en) | High-performance large three-upright-column semi-submersible type oil storage production platform | |
| CN103482036A (en) | Buoyancy tower type ocean platform | |
| CN114435552B (en) | Large-scale three stand semi-submerged formula oil storage production platform of high performance | |
| CN110155262A (en) | A kind of dry tree semisubmersible platform with self installation function | |
| CN203486110U (en) | Buoyant-tower-type ocean platform | |
| US3186180A (en) | Offshore well drilling and oil storage platform | |
| CN214776446U (en) | Tension leg type shallow sea rock-soil exploration mobile platform | |
| CN206926791U (en) | A kind of jack up partly latent multifunctional platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230116 Address after: 100027 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant after: CHINA NATIONAL OFFSHORE OIL Corp. Applicant after: OFFSHORE OIL ENGINEERING Co.,Ltd. Address before: 100027 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant before: CHINA NATIONAL OFFSHORE OIL Corp. Applicant before: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant before: COTEC, Inc. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |