CN115140256B - Semi-submersible type offshore oil production platform - Google Patents
Semi-submersible type offshore oil production platform Download PDFInfo
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- CN115140256B CN115140256B CN202210320745.0A CN202210320745A CN115140256B CN 115140256 B CN115140256 B CN 115140256B CN 202210320745 A CN202210320745 A CN 202210320745A CN 115140256 B CN115140256 B CN 115140256B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 84
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims description 29
- 239000003208 petroleum Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010248 power generation Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 10
- 230000033001 locomotion Effects 0.000 abstract description 10
- 239000013535 sea water Substances 0.000 abstract description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
- B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/265—Separation of sediment aided by centrifugal force or centripetal force by using a vortex inducer or vortex guide, e.g. coil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/005—Equipment to decrease ship's vibrations produced externally to the ship, e.g. wave-induced vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/95—Mounting on supporting structures or systems offshore
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention relates to the technical field of offshore oil production platforms, in particular to a semi-submersible offshore oil production platform which comprises a platform body, an oil delivery pipe, a sand removing device and a plurality of heave pieces, wherein the platform body is provided with a sand removing device; the oil delivery pipe, the sand removing device and the plurality of heave pieces are all connected with the platform body; one end of the oil delivery pipe is used for pumping oil from the seabed, and the other end of the oil delivery pipe is connected with the sand removing device; the heave piece is positioned below the bottom of the platform body and is horizontally provided with a plurality of through grooves in a penetrating way; the heave piece can reduce the amplitude of movement when the platform body moves vertically along with sea waves, the through groove can enable sea water to flow through the heave piece, and the through groove arranged horizontally enables the flow direction of the sea water to be perpendicular to the moving direction of the platform body, so that the amplitude of vertical movement of the platform body is further reduced, and the effect of effectively resisting sea storms is achieved.
Description
Technical Field
The invention relates to the technical field of offshore oil production platforms, in particular to a semi-submersible offshore oil production platform.
Background
Ocean floating platforms are one of the important equipment for ocean oil and gas development, and four common ocean floating platform types are: boat-type platforms, semi-submersible platforms, tension leg platforms, and single column platforms. The semi-submersible platform is also called as an upright column stable type platform, and is a movable platform commonly used in offshore oil and gas exploration and development. The semi-submersible platform consists of a platform body, a lower floating body positioned below the platform body, upright posts connecting the platform body and the lower floating body and a plurality of connecting cross braces and inclined struts.
The semi-submersible platform has the characteristic of small waterline area, and the vertical hydrostatic recovery rigidity is small, so that heave motion performance is poor, and the normal operation of the vertical pipe can be influenced by the large heave motion. Therefore, in storm seasons, the semi-submersible has to frequently interrupt the operation, even release the riser, and tie back the riser again to start the operation after the storm passes. This disadvantage greatly reduces the effective working time of the semi-submersible platform and greatly increases the cost of operation. If the heave response of the semi-submersible can be reduced, the effective working time is increased.
An existing semi-submersible platform comprises a platform hull; the platform hull sequentially comprises an upper deck, a lower buoyancy tank and a heave plate from top to bottom; 4 upright posts are supported between the upper deck and the lower buoyancy tank; the upright post is fixedly connected with the lower floating box; the upright post can vertically slide along the upper deck, and the top of the upright post is fixedly connected with the upper deck; the lower buoyancy tank is connected with the heave plate through mooring ropes; the lower buoyancy tank is internally provided with a ballast tank.
The conventional semi-submersible platform is provided with the heave plate capable of stabilizing the platform body, but can only play a certain role when the sea wave is small, and has little effect when the sea wave is large.
Disclosure of Invention
The invention provides a semi-submersible offshore oil production platform which can effectively reduce the motion of a platform body in the vertical direction caused by sea waves in order to solve the problem that the semi-submersible platform in the prior art is difficult to resist larger sea waves.
In order to solve the technical problems, the invention adopts the following technical scheme: a semi-submersible offshore oil production platform comprises a platform body, an oil delivery pipe for pumping oil from the sea bottom, a sand removing device and a plurality of heave pieces; the oil delivery pipe, the sand removing device and the plurality of heave pieces are all connected with the platform body; the oil delivery pipe is communicated with the sand removing device; the heave piece is located at the bottom of the platform body, and a plurality of through grooves are formed in the heave piece in a horizontal penetrating mode.
The platform body is used for building oil extraction equipment and related buildings; the oil delivery pipe is used for extracting oil at the sea bottom; the sand removing device separates the petroleum extracted from the petroleum pipeline from the sand and stone wrapped by the petroleum; the heave piece can reduce the amplitude of platform body removal when the platform body moves along with the wave is perpendicular, and logical groove can make the sea water pass and heave the piece and flow, and the logical groove that the level set up makes the flow direction of sea water perpendicular with the direction of movement of platform body to further reduce the amplitude of the vertical movement of platform body, reach the effect of effectively resisting the sea storm.
Further, a plurality of through grooves are arranged in the heave piece from top to bottom.
Further, the heave piece comprises a first heave block and a second heave block, and the volume of the first heave block is smaller than that of the second heave block.
Further, the through groove comprises an upper groove and a lower groove, the upper groove is positioned on the first heave block, and the lower groove is positioned on the second heave block; the groove width of the upper groove is 1-2 m, and the groove length is 40-60 m; the groove width of the lower groove is 1.5-3 m, and the groove length is 60-80 m.
Further, a power generation device for generating power by utilizing water flow is arranged in the through groove and is used for providing electric energy for the platform body.
Further, the sand removing device comprises a sand pool and a plurality of separators for separating sand and stone from petroleum; the separator is provided with an oil inlet, an oil outlet for outputting oil for removing sand and stones and a sand outlet for outputting sand and stones in the oil, the oil inlet is communicated with an oil delivery pipe, and the sand outlet is communicated with a sand pool.
Further, the separator comprises a pipe body, a screw rod and screw edges; the pipe body is vertically arranged, the sand outlet is positioned at the top end of the pipe body, the oil outlet is positioned at the bottom end of the pipe body, and the oil inlet is positioned on the side pipe wall of the pipe body; the screw rod vertically rotates and sets up in the body, the screw edge is established on the screw rod along the length direction spiral dish of screw rod.
Further, the upper surface of the screw rib is provided with a plurality of grooves along the extending direction of the screw rib.
Further, a plurality of stoppers for stopping sand and stones are arranged on the upper surface of the screw edge.
Further, guard plates for preventing sand and stones from falling out of the screw edges are arranged on two sides of the screw edges.
Compared with the prior art, the invention has the beneficial effects that:
1. through arranging a plurality of through grooves in the horizontal direction on the heave piece, the heave piece can reduce the moving amplitude when the platform body moves vertically along with sea waves, the through grooves can enable sea water to flow through the heave piece, and the flow direction of the sea water is perpendicular to the moving direction of the platform body through the horizontally arranged through grooves, so that the vertical moving amplitude of the platform body is further reduced, and the effect of effectively resisting sea waves is achieved;
2. the through grooves are arranged on the heave piece from top to bottom, so that the heave piece is internally provided with water flows in the laminated horizontal direction, and the water flow direction of each layer is vertical to the movement direction of the platform body when the platform body moves up and down, thereby enhancing the effect of reducing the vertical movement of the platform body;
3. the size of the first heave block is smaller than that of the second heave block, so that the gravity center of the whole heave piece is lowered, the gravity center of the platform body is lowered, the stability of the platform body is improved, and jolt of the platform body in stormy waves is reduced;
4. the power generation device is arranged in the through groove, so that mechanical energy of water flow passing through the through groove is converted into electric energy and is used by some equipment on the platform body, and the utilization ratio of clean energy of the platform body can be increased;
5. after the petroleum wrapped with the sand and stone enters the pipe body, the petroleum falls on the screw edges, the screw edges rotate along with the screw rod, so that the petroleum slides downwards under the action of gravity, and the sand and stone gradually rises to a sand outlet along with the rotation of the screw edges and is concentrated in a sand pool, thereby achieving the effect of high-efficiency primary treatment of the petroleum;
6. by arranging the strip groove on the screw edge, the petroleum can enter the strip groove under the action of gravity and gradually fall to the bottom of the pipe body, so that sand and stone can be prevented from sliding down along with the petroleum, and the petroleum and the sand and stone can be separated initially on the screw edge;
7. by arranging the stop block on the screw edge, large-particle sand and stones are prevented from rolling downwards along the screw edge and cannot enter the sand pool.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment 1 of a semi-submersible offshore production platform of the present invention;
FIG. 2 is a schematic view showing the internal structure of an embodiment 1 of a semi-submersible offshore production platform according to the present invention;
FIG. 3 is a schematic view of the heave member of example 1 of a semi-submersible offshore production platform according to the invention;
FIG. 4 is a schematic structural view of a sand removing device in embodiment 1 of a semi-submersible offshore production platform according to the present invention;
FIG. 5 is a schematic view showing the internal structure of a sand removing device in embodiment 1 of a semi-submersible offshore production platform according to the present invention;
fig. 6 is a schematic diagram of the structure of the portion a in fig. 5.
In the accompanying drawings: 1. a platform body; 11. a working platform; 12. a tarmac; 13. sealing the cabin; 14. an oil storage compartment; 15. stabilizer fins; 16. an anchor chain; 2. an oil delivery pipe; 3. a sand removing device; 31. a sand pool; 32. a separator; 321. an oil inlet; 322. an oil outlet; 323. a sand outlet; 324. a tube body; 325. a screw; 326. Screw edges; 327. a strip groove; 328. a stop block; 329. a guard board; 4. a heave member; 41. a first heave block; 42. A second heave block; 43. a side frame; 5. a through groove; 51. an upper groove; 52. a lower groove; 6. a power generation device; 61. an impeller; 62. and (5) a generator.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or suggested that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limitations of the present patent, and it is possible for those skilled in the art to understand the specific meaning of the terms described above according to the specific circumstances.
The technical scheme of the invention is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1
Referring to fig. 1, an embodiment 1 of a semi-submersible offshore oil production platform according to the present invention includes a platform body 1, an oil delivery pipe 2, a sand removing device 3, and a plurality of heave members 4; the oil delivery pipe 2, the sand removing device 3 and the heave pieces 4 are all connected with the platform body 1; one end of the oil delivery pipe 2 is used for pumping oil from the sea floor, and the other end of the oil delivery pipe is connected with the sand removing device 3; the heave piece 4 is positioned below the bottom of the platform body 1, and a plurality of through grooves 5 are horizontally penetrated through the heave piece 4.
Specifically, the two sides of the platform body 1 are also provided with telescopic working platforms 11, and the working platforms 11 can be selectively unfolded or retracted into the platform body 1 according to different conditions, so that the whole platform body 1 can adapt to various working conditions. The other two sides of the platform body 1 are also provided with telescopic air decks 12, when no aircraft needs to land, the air decks 12 can be retracted into the platform body 1, and when the aircraft needs to land, the air decks 12 can be unfolded, so that the aircraft can be conveniently parked. Four corners of the platform body 1 are respectively provided with anchor chains 16 for reinforcing the platform body 1 and improving the storm resistance of the platform body 1. The sand removing device 3 is arranged at the center of the platform body 1 in a penetrating way, and the oil delivery pipe 2 is communicated with the bottom of the sand removing device 3. The platform body 1 below is provided with a plurality of sealed cabins 13 in the week side position department of oil delivery pipe 2 for provide buoyancy for platform body 1, the top of sealed cabin 13 is provided with a plurality of oil storage cabins 14, is used for storing the oil of getting rid of sand and stone, is provided with a plurality of stabilizer fins 15 on the outer wall of oil storage cabin 14, further reduces the rocking of platform body 1 when meetting the wind and wave.
The platform body 1 is used for building oil extraction equipment and related buildings; the oil delivery pipe 2 is used for extracting oil at the sea floor; the sand removing device 3 separates the petroleum pumped out by the petroleum pipeline 2 from sand and stone wrapped by the petroleum; the heave piece 4 can reduce the moving amplitude when the platform body 1 vertically moves along with sea waves, the through groove 5 can enable sea water to flow through the heave piece 4, and the through groove 5 horizontally arranged enables the flow direction of the sea water to be vertical to the moving direction of the platform body 1, so that the vertical moving amplitude of the platform body 1 is further reduced, and the effect of effectively resisting sea waves is achieved.
In this embodiment, the through grooves 5 are arranged in the heave member 4 from top to bottom, so that the heave member 4 has water flows in a layered horizontal direction, and the water flow direction of each layer is perpendicular to the moving direction of the platform body 1 when moving up and down, thereby enhancing the effect of reducing the vertical movement of the platform body 1.
In this embodiment, the heave member 4 includes a first heave block 41 and a second heave block 42, and the size of the first heave block 41 is smaller than the size of the second heave block 42.
Specifically, two heave pieces 4 are symmetrically arranged at two sides below the platform body 1. The first heave block 41 and the second heave block 42 are both cuboid, the length of the first heave block 41 is 100m, the width is 30m, and the height is 15m; the second heave block 42 has a length of 110m, a width of 38m and a height of 18m; the first heave block 41 is located above the second heave block 42, and the midpoint of the first heave block 41 coincides with the projection in the vertical direction of the midpoint of the second heave block 42. The first heave block 41 is fixedly connected with the platform body 1 through a side frame 43 of a triangular structure, and the lower surface of the first heave block 41 is connected with the upper surface of the second heave block 42 through the side frame 43 of the triangular structure. The triangular structural stability is used to ensure that the heave member 4 does not collapse in the lateral structure under the action of lateral forces.
In this embodiment, the through groove 5 includes an upper groove 51 and a lower groove 52, the upper groove 51 is located on the first heave block 41, and the lower groove 52 is located on the second heave block 42; the width of the upper groove 51 is 1m, and the length of the upper groove is 40m; the lower groove 52 has a groove width of 1.5m and a groove length of 60m.
The number of the upper grooves 51 is three, and the upper grooves 51 are formed to penetrate through the side wall of the first heave block 41 in the longitudinal direction; the number of the lower grooves 52 is three, and the lower grooves 52 are provided so as to penetrate the side walls of the second heave block 42 in the longitudinal direction.
In this embodiment, a power generation device 6 that generates power by using water flow is disposed in the through groove 5, and the power generation device 6 is used for providing electric energy to the platform body 1. The power generation device 6 comprises an impeller 61 and a generator 62, three impellers 61 are arranged in the upper side groove 51 and the lower side groove 52, the impellers 61 are connected with the input end of the generator 62, when water flows through the side grooves, the impellers 61 rotate, the generator 62 converts mechanical energy of rotation of the impellers 61 into electric energy and provides electric power for part of equipment on the platform body 1, and therefore the utilization ratio of clean energy of the platform body 1 can be increased.
In this embodiment, the sand removing device 3 includes a sand pool 31 and a plurality of separators 32 for separating sand and stone from oil; the separator 32 comprises an oil inlet 321, an oil outlet 322 for outputting oil with sand removed and a sand outlet 323 for outputting sand in the oil, the oil inlet 321 is communicated with the oil delivery pipe 2, and the sand outlet 323 is communicated with the sand pool 31. The oil outlet 322 communicates with the oil storage compartment 14 through a pipe so that the oil from which sand and stones are removed can be directly collected. The sand pool 31 is located at the center of the platform body 1, and the sand pool 31 is located on the upper surface of the platform body 1, so that the sand and stones in the sand pool 31 can be cleaned by workers conveniently. The sand pool 31 is cylindrical, the number of the separators 32 is six, the separators 32 are uniformly and alternately distributed on the periphery of the sand pool 31, and the plurality of separators 32 are provided, so that the speed of treating petroleum can be increased.
In this embodiment, the separator 32 includes a tube 324, a screw 325, and a screw ridge 326; the pipe body 324 is vertically arranged, the sand outlet 323 is positioned at the top end of the pipe body 324, the oil outlet 322 is positioned at the bottom end of the pipe body 324, and the oil inlet 321 is positioned between the sand outlet 323 and the oil outlet 322; the screw 325 is vertically rotatably disposed in the pipe 324, and the screw 326 is spirally disposed on the screw 325 along a length direction of the screw 325.
After the petroleum wrapped with sand and stone enters the pipe body 324 through the oil inlet 321, the petroleum falls on the screw edges 326, the screw edges 326 rotate along with the screw rods 325, so that the petroleum slides down under the action of gravity, the sand and stone gradually rises to the sand outlet 323 along with the rotation of the screw edges 326 and falls into the sand pool 31, and the effect of high-efficiency primary treatment of the petroleum is achieved.
In this embodiment, a plurality of grooves 327 are formed on the upper surface of the screw rib 326 along the extending direction of the screw rib 326. The upper surface of the screw rib 326 is provided with three grooves 327, and the width of each groove 327 is 1cm. The interval has between two adjacent bar grooves 327 for oil can get into bar groove 327 under the effect of gravity, and fall to the bottom of body 324 gradually, can prevent that sand and stone from landing along with the oil, make oil and sand and stone can accomplish preliminary separation on the spiral shell arris 326.
In this embodiment, a plurality of stoppers 328 for stopping sand and stones are provided on the upper surface of the screw rib 326. Specifically, the screw flight 326 provides a stop 328 between two adjacent grooves 327. Preventing large granular sand from rolling down the screw flights 326 and not entering the sand pool 31.
In this embodiment, guard plates 329 are disposed on both sides of the screw rib 326 to prevent sand and stone from falling out of the screw rib 326. The guard plates 329 are fixedly provided on both sides of the screw 326 as the screw 326 extends. The centrifugal force generated during the rotation of the screw edge 326 is prevented from throwing out large-particle sand and stones from the screw edge 326, so that the sand and stones cannot be filtered and the inner wall of the pipe body 324 is not worn and damaged.
Example 2
In embodiment 2 of the semi-submersible offshore oil production platform, the difference between the embodiment and embodiment 1 is that the groove width of the upper groove 51 is 2m, and the groove length is 60m; the lower groove 52 has a groove width of 1.5m and a groove length of 60m.
Example 3
In the embodiment 3 of the semi-submersible offshore oil production platform, the groove width of the upper groove 51 is 1m, and the groove length is 40m; the lower groove 52 has a groove width of 3m and a groove length of 80m.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention as set forth in the claims.
Claims (5)
1. The semi-submersible offshore oil production platform is characterized by comprising a platform body (1), an oil delivery pipe (2) for pumping oil from the seabed, a sand removing device (3) and a plurality of heave pieces (4); the oil delivery pipe (2), the sand removing device (3) and the plurality of heave pieces (4) are all connected with the platform body (1); the oil delivery pipe (2) is communicated with the sand removing device (3); the heave piece (4) is positioned below the bottom of the platform body (1), and a plurality of through grooves (5) are horizontally and penetratingly formed in the heave piece (4);
the through grooves (5) are arranged in the heave piece (4) from top to bottom;
the heave piece (4) comprises a first heave block (41) and a second heave block (42), and the volume of the first heave block (41) is smaller than that of the second heave block (42);
the through groove (5) comprises an upper groove (51) and a lower groove (52), the upper groove (51) is positioned on the first heave block (41), and the lower groove (52) is positioned on the second heave block (42); the groove width of the upper groove (51) is 1-2 m, and the groove length is 40-60 m; the groove width of the lower groove (52) is 1.5-3 m, and the groove length is 60-80 m;
a power generation device (6) for generating power by utilizing water flow is arranged in the through groove (5), and the power generation device (6) is used for providing electric energy for the platform body (1);
the sand removing device (3) comprises a sand pool (31) and a plurality of separators (32) for separating sand and stone from petroleum; the separator (32) is provided with an oil inlet (321), an oil outlet (322) for outputting oil for removing sand and stones and a sand outlet (323) for outputting sand and stones in the oil, the oil inlet (321) is communicated with the oil delivery pipe (2), and the sand outlet (323) is communicated with the sand pool (31).
2. The semi-submersible offshore production platform of claim 1, wherein the separator (32) comprises a tubular body (324), a screw (325), and a flight (326); the pipe body (324) is vertically arranged relative to the platform body (1), the sand outlet (323) is arranged at the top end of the pipe body (324), the oil outlet (322) is arranged at the bottom end of the pipe body (324), and the oil inlet (321) is arranged on the side pipe wall of the pipe body (324); the screw (325) is vertically and rotatably arranged in the pipe body (324), and the screw edge (326) is spirally arranged on the screw (325) along the length direction of the screw (325).
3. Semi-submersible offshore production platform according to claim 2, wherein the upper surface of the screw flight (326) is provided with a number of grooves (327) along its own extension.
4. The semi-submersible offshore production platform according to claim 2, wherein the upper surface of the screw flight (326) is provided with a plurality of stops (328) for stopping sand and stones.
5. Semi-submersible offshore production platform according to claim 2, wherein both sides of the screw flight (326) are provided with guard plates (329) for preventing sand and stones from falling out of the screw flight (326).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320745.0A CN115140256B (en) | 2022-03-29 | 2022-03-29 | Semi-submersible type offshore oil production platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320745.0A CN115140256B (en) | 2022-03-29 | 2022-03-29 | Semi-submersible type offshore oil production platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115140256A CN115140256A (en) | 2022-10-04 |
| CN115140256B true CN115140256B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210320745.0A Active CN115140256B (en) | 2022-03-29 | 2022-03-29 | Semi-submersible type offshore oil production platform |
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