CN105083488A - Arrangement method for double-layer bottom of self-elevating type drilling platform - Google Patents
Arrangement method for double-layer bottom of self-elevating type drilling platform Download PDFInfo
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- CN105083488A CN105083488A CN201510589489.5A CN201510589489A CN105083488A CN 105083488 A CN105083488 A CN 105083488A CN 201510589489 A CN201510589489 A CN 201510589489A CN 105083488 A CN105083488 A CN 105083488A
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Abstract
The invention discloses an arrangement method for a double-layer bottom of a self-elevating type drilling platform. The double-layer bottom comprises a platform bottom plate, a mechanical deck and a platform peripheral plate. A first pile leg, a second pile leg and a third pile leg are arranged on a bow of the platform bottom plate, the port of the bow and the starboard of the bow respectively. Fifteen pre-pressing water loading tanks, six pre-pressing water loading-drilling water common cabins, two pre-pressing water loading-deck water draining common cabin, one pre-pressing water loading-buffering common cabin, two fresh water tanks, two fuel cabins, one drilling water cabin, one saline cabin, one base oil cabin, one cabin bottom water cabin, one dirty oil tank, two sea chests, one pipe tunnel and two pipe channels are further arranged on the platform bottom plate. Compared with the prior art, with the design, pipes and valves can be arranged in a dry hollow cabin in a concentrated mode, daily operation and maintenance are convenient, in addition, the purchasing and building cost of the pipes and the valves is easily reduced, and better profit space is created for platform builders.
Description
Technical field
The present invention relates to marine engineering equipment technical field, particularly a kind of method for arranging of jack-up drilling unit double bottom.
Background technology
Double bottom (doublebottom) refers to the general designation in boats and ships tank top plate, bottom plating and skeleton between the two and space.The design concept of platform double bottom follows from boats and ships double bottom, and the main object of design double bottom is colliding or the tactile end, when outer bottom breakage, the interior end, can be prevented seawater and be immersed in cabin, ensures the safety of platform, personnel and equipment, increases the resistance to sinking of platform.
Platform double bottom is made up of underdeck, machinery deck and peripheral wall, by longitudinal bulkhead and transcerse bulkhead, double bottom is divided into several functional cabin again, comprises pre-ballast chamber, drilling well water tank, fresh water tank, fuel oil tank, bleed off water tank, salt water tank, base oil cabin, bilge water tank and dirty oil tank.
The effect of platform double bottom comprises:
1. ensure the towage stability of platform.Jack-up drilling unit needs experience towage operating mode needing from a marine site towage to another marine site operation.Because the environmental conditionss such as wind, wave, stream can impact the floading condition of platform in towage process, the danger of toppling in towage process even may be caused.Therefore by loading ballast water to double bottom, can floading condition in actv. adjustment towage process and height of gravitational center, ensure the towage stability of platform.
2. piling.Spud leg, after towage puts in place, is transferred to seabed by jack-up drilling unit, and finally props up main body and leave the water surface, realizes drilling operation.In order to spud leg being inserted the enough degree of depth of ocean bottom soil, needing by pouring into a certain amount of ballast water in double bottom, to play the object of piling, ensureing that the danger of sedimentation can not occur platform in operation process.
3. loading day goods and materials.Fuel oil tank in double bottom is in order to load marine diesel oil, drilling well water tank uses mixedly fresh water in order to load, fresh water tank loads domestic fresh water, salt water tank and base oil cabin load salt solution with slurry and base oil respectively, bilge water tank stores platform bilge water, dirty oil tank stores sump oil, and the bleed off water in weather deck and machinery deck collected by deck bleed off water tank.
The greatest drawback that double bottom of the prior art exists is exactly pipeline and valve member dispersed placement in double bottom, is unfavorable for regular job; Pipeline is arranged in liquid tank, considers that the factors such as corrosion need additionally to increase wall thickness, and cost and weight increase; Pipeline and valve member are arranged in the liquid cabin that personnel not easily arrive, and must use remote valve, and maintaining is inconvenient; Valve member in double bottom must adopt immersion, and purchase cost increases.
Summary of the invention
Object of the present invention, a kind of method for arranging of jack-up drilling unit double bottom is provided exactly in order to solve the problem, the method for arranging of this double bottom not only solves the problem of tank capacity and layout, the pipe lane simultaneously designed and port and starboard tube passage facilitate regular job and the maintaining of personnel, and be conducive to the buying and the laid down cost that reduce pipe fitting and valve member, create larger profit margin to platform construction side.
The object of the present invention is achieved like this:
A method for arranging for jack-up drilling unit double bottom, this double bottom comprises platform floor, machinery deck and platform peripheral board, and the bow of described platform floor, stern larboard and stern starboard are furnished with the first spud leg, the second spud leg and prism of third order leg respectively;
The surrounding of described first spud leg is furnished with the first pre-ballast chamber being positioned at the described first spud leg left and right sides and rear side, the first pre-ballast water-Drilling Water being positioned at described first spud leg front left side shares cabin and be positioned at described first pre-ballast water-Drilling Water to share on the right side of cabin and the second pre-ballast water-Drilling Water being positioned at described first spud leg forward right side shares cabin;
The surrounding of described second spud leg is furnished with the second pre-ballast chamber being positioned at described second spud leg front left side, the 3rd pre-ballast chamber being positioned at described second spud leg forward right side, is positioned at the 4th pre-ballast chamber on the right side of described second spud leg and is positioned at the 5th pre-ballast chamber of described second spud leg left rear side;
The surrounding of described prism of third order leg is furnished with the 6th pre-ballast chamber being positioned at described prism of third order leg forward right side, the pre-ballast water-buffering being positioned at the 7th pre-ballast chamber on the left of described prism of third order leg, being positioned at the 8th pre-ballast chamber of the described right back front side of prism of third order leg and being positioned at described prism of third order leg front left side shares cabin;
The bow larboard of described platform floor is furnished with and is positioned at described first pre-ballast water-Drilling Water and shares the pre-ballast water-Drilling Water in the 3rd on the left of cabin and share cabin and be positioned at the 9th pre-ballast chamber on the left of the described first pre-ballast chamber;
The bow starboard of described platform floor is furnished with and is positioned at described second pre-ballast water-Drilling Water and shares the pre-ballast water-Drilling Water in the 4th on the right side of cabin and share cabin and be positioned at the tenth pre-ballast chamber on the right side of the described first pre-ballast chamber;
The midships section larboard of described platform floor is furnished with and is positioned at the first fresh water tank on rear side of the described 9th pre-ballast chamber, is positioned at the 11 pre-ballast chamber on rear side of described first fresh water tank and is positioned on rear side of described first fresh water tank and the 12 pre-ballast chamber be positioned on the left of the 11 pre-ballast chamber;
The midships section starboard of described platform floor is furnished with and is positioned at the second fresh water tank on rear side of the described tenth pre-ballast chamber, is positioned at the 13 pre-ballast chamber on rear side of described second fresh water tank and is positioned on rear side of described second fresh water tank and the 14 pre-ballast chamber be positioned on the right side of the 13 pre-ballast chamber;
The midships section of described platform floor is furnished with and is positioned at drilling well water tank on rear side of the described first pre-ballast chamber, is positioned at the salt water tank on rear side of described drilling well water tank and is positioned on rear side of described drilling well water tank and the base oil cabin be positioned on the right side of described salt water tank;
The stern larboard of described platform floor is furnished with the first pre-ballast water-deck be positioned on the right side of the described 3rd pre-ballast chamber water of releasing and shares cabin, and bilge water tank and dirty oil tank, the five pre-ballast water-Drilling Waters be positioned on the right side of the described 5th pre-ballast chamber share cabin;
The stern starboard of described platform floor is furnished with and is positioned at described pre-ballast water-buffering second pre-ballast water-deck shared on the left of cabin water of releasing and shares cabin and share cabin with the 6th pre-ballast water-Drilling Water be positioned on the left of the described 8th pre-ballast chamber;
Described first pre-ballast water-deck water of releasing shares cabin and second pre-ballast water-deck water of releasing and shares the second fuel oil tank being furnished with the first fuel oil tank between cabin and being positioned on rear side of described first fuel oil tank, and the described 5th pre-ballast water-Drilling Water shares cabin and the 6th pre-ballast water-Drilling Water and to share between cabin and the rear side being positioned at described second fuel oil tank is furnished with the 15 pre-ballast chamber;
Between described first fresh water tank and drilling well water tank, the 11 be all furnished with larboard tube passage between ballast chamber and salt water tank in advance, in described larboard tube passage, be furnished with saltwater system endless tube, pre-ballasting system larboard collector and bilge piping system larboard collector;
Between described second fresh water tank and drilling well water tank, the 13 be all furnished with starboard tube passage between ballast chamber and base oil cabin in advance, in described starboard tube passage, be furnished with saltwater system endless tube, pre-ballasting system starboard collector and bilge piping system starboard collector;
Described pre-ballasting system larboard collector and pre-ballasting system starboard collector are furnished with several remote valves altogether, described bilge piping system larboard collector and bilge piping system starboard collector are furnished with several screw down nonreturn valves altogether;
Larboard sea chest is furnished with between described 3rd pre-ballast chamber and the 11 pre-ballast chamber, described pre-ballast water-buffering shares and is furnished with starboard sea chest between cabin and the 13 pre-ballast chamber, and described larboard sea chest and starboard sea chest are done to be connected by the pipe be arranged between described first fuel oil tank and salt water tank;
Described pipe is furnished with seawater main, pre-ballast main and bilge main in doing, described seawater main is furnished with several remote valves, several seawater filters, several check valves and several butterfly valves, described pre-ballast main is furnished with several remote valves, described bilge main is furnished with several butterfly valves and several remote valves;
Pre-ballast water-the Drilling Water of described first, second, third and fourth shares the volume and first, the 9th identical with the volume of the tenth pre-ballast chamber in cabin, described second, third, the 4th, the 5th, the 6th, the 7th, the volume of the 8th pre-ballast chamber is identical with the volume in the shared cabin of pre-ballast water-buffering, and the volume of the described first pre-ballast chamber is greater than the volume of the described second pre-ballast chamber.
The method for arranging of above-mentioned a kind of jack-up drilling unit double bottom, wherein, the pre-ballast water-Drilling Water of described first, second, third and fourth shares the volume and first in cabin, the volume of the 9th and the tenth pre-ballast chamber is 3915m
3, described second, third, the 4th, the 5th, the 6th, the 7th, the volume in the volume of the 8th pre-ballast chamber and the shared cabin of pre-ballast water-buffering is 2470m
3.
Beneficial effect of the present invention is as follows:
1. arrange left and right side of a ship tube passage and pipe in double bottom to do, seawater main, bilge main etc. can be arranged in during pipe does, house steward's valve and each valve connecting each arm also can centralized arrangement simultaneously, convenient operation and maintenance; Owing to arranging tube passage, valve can change dry type into by immersion, reduces the purchase cost of valve.
2. the pre-ballast chamber of the bow of platform floor is larger than the volume of the pre-ballast chamber of the stern of platform floor, such arrangement is conducive to the stress balance that platform ensures three pile legs under above-mentioned operating mode, the generation of the dangerous situation avoiding the platform caused due to load inequality to tilt to stern.
3. fresh water tank, fuel oil tank, salt water tank, base oil cabin, bilge water tank and dirty oil tank be furnished with the length being beneficial to and shortening pipeline, reduce pipeline and arrange that difficulty also reduces laid down cost.
4. arrange that the advantage that six pre-ballast water-Drilling Waters share cabin and a drilling well water tank is, can meet the functional requirement of different platform system.
5. pre-ballast water-deck water of releasing shares the problem that layout that cabin and pre-ballast water-buffering share cabin solves liquid tank space anxiety in double bottom, and pre-ballast water-deck water of releasing shares cabin and also meets the design that no pollution discharges simultaneously.
Accompanying drawing explanation
Fig. 1 is the planar view of jack-up drilling unit double bottom of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Consult Fig. 1, a kind of method for arranging of jack-up drilling unit double bottom, this double bottom comprises platform floor, machinery deck and platform peripheral board, and the bow of platform floor, stern larboard and stern starboard are furnished with the first spud leg 1, second spud leg 2 and prism of third order leg 3 respectively.
The surrounding of the first spud leg 1 is furnished with the pre-ballast water-Drilling Water of the first pre-ballast chamber 4, first and shares cabin 5 and second pre-ballast water-Drilling Water shares cabin 6; The surrounding of the second spud leg 2 is furnished with the second pre-ballast chamber 7, the 3rd pre-ballast chamber 8, the 4th pre-ballast chamber 9 and the 5th pre-ballast chamber 10; The surrounding of prism of third order leg 3 is furnished with the 6th pre-ballast chamber 11, the 7th pre-ballast chamber 12, the 8th pre-ballast chamber 13 and pre-ballast water-buffering and shares cabin 14.
The bow larboard of platform floor is furnished with the 3rd pre-ballast water-Drilling Water and shares cabin 15 and the 9th pre-ballast chamber 16; The bow starboard of platform floor is furnished with the 4th pre-ballast water-Drilling Water and shares cabin 17 and the tenth pre-ballast chamber 18.
The midships section larboard of platform floor is furnished with the pre-ballast chamber 21 of the pre-ballast chamber the 20 and the 12 of the first fresh water tank the 19, the 11; The midships section starboard of platform floor is furnished with the pre-ballast chamber 24 of the pre-ballast chamber the 23 and the 14 of the second fresh water tank the 22, the 13; The midships section of platform floor is furnished with drilling well water tank 25, salt water tank 26 and base oil cabin 27.
The stern larboard of platform floor is furnished with first pre-ballast water-deck water of releasing and shares cabin 28, and bilge water tank 29, dirty oil tank 30 and five pre-ballast water-Drilling Waters share cabin 31; The stern starboard of platform floor is furnished with second pre-ballast water-deck water of releasing and shares cabin 32 and the 6th pre-ballast water-Drilling Water shares cabin 33.
First pre-ballast water-deck water of releasing shares cabin 28 and second pre-ballast water-deck water of releasing and shares and to be furnished with the first fuel oil tank 34 and the pre-ballast water-Drilling Water of the second fuel oil tank the 35, five between cabin 32 and to share cabin 31 and the 6th pre-ballast water-Drilling Water and share between cabin 33 and be furnished with the 15 pre-ballast chamber 36.
Be more than the layout roughly of each cabin on platform floor, its concrete position is incorporated by reference to Fig. 1 and with reference to following text description.
The left and right sides of the first spud leg 1 and rear side are furnished with the first pre-ballast chamber 4, the front left side of the first spud leg 1 is furnished with first pre-ballast water-Drilling Water and shares the pre-ballast water-Drilling Water in cabin 5, first and share the right side in cabin and the forward right side being positioned at the first spud leg 1 is furnished with second pre-ballast water-Drilling Water shares cabin 6.
The front left side of the second spud leg 2 is furnished with the second pre-ballast chamber 7, the forward right side being positioned at the second spud leg 2 is furnished with the 3rd pre-ballast chamber 8, the left rear side that the right side of the second spud leg 2 is furnished with the 4th pre-ballast chamber 9, second spud leg 2 is furnished with the 5th pre-ballast chamber 10.
The forward right side of prism of third order leg 3 is furnished with the 6th pre-ballast chamber 11, the left side of prism of third order leg 3 is furnished with the 7th pre-ballast chamber 12, the right back front side of prism of third order leg 3 is furnished with the 8th pre-ballast chamber 13, and the front left side of prism of third order leg 3 is furnished with pre-ballast water-buffering and shares cabin 14.
The left side that first pre-ballast water-Drilling Water shares cabin 5 is furnished with the left side that the 3rd pre-ballast water-Drilling Water shares the pre-ballast chamber 4 in cabin 15, first and is furnished with the 9th pre-ballast chamber 16.
The right side that second pre-ballast water-Drilling Water shares cabin 6 is furnished with the right side that the 4th pre-ballast water-Drilling Water shares the pre-ballast chamber 4 in cabin 17, first and is furnished with the tenth pre-ballast chamber 18.
The rear side that the rear side of the 9th pre-ballast chamber 16 is furnished with the first fresh water tank 19, first fresh water tank 19 is furnished with the pre-ballast chamber 21 of the 11 pre-ballast chamber the 20 and the 12, and the 11 pre-ballast chamber 20 is positioned at the right side of the 12 pre-ballast chamber 21.
The rear side that the rear side of the tenth pre-ballast chamber 18 is furnished with the second fresh water tank 22, second fresh water tank 22 is furnished with the pre-ballast chamber 24 of the 13 pre-ballast chamber the 23 and the 14, and the 13 pre-ballast chamber 23 is positioned at the left side of the 14 pre-ballast chamber 24.
The rear side of the first pre-ballast chamber 4 is furnished with drilling well water tank 25, and the rear side of drilling well water tank 25 is furnished with salt water tank 26, the rear side of drilling well the water tank 25 and right side being positioned at salt water tank is furnished with base oil cabin 27.
The right side of the 3rd pre-ballast chamber 8 is furnished with first pre-ballast water-deck and releases that water shares cabin 28, the right side of bilge water tank 29 and the pre-ballast chamber 10 of dirty oil tank the 30, five is furnished with five pre-ballast water-Drilling Waters and shares cabin 31.
Pre-ballast water-buffering shares the left side in cabin 14 and is furnished with release left side that water shares the pre-ballast chamber 13 in cabin the 32, eight, second pre-ballast water-deck and is furnished with the 6th pre-ballast water-Drilling Water and shares cabin 33.
The rear side that the rear side of the first fuel oil tank is furnished with the second fuel oil tank 35, second fuel oil tank 35 is furnished with the 15 pre-ballast chamber 36.
Wherein, first pre-ballast water-Drilling Water shares the pre-volume that ballast water-Drilling Water shares cabin 6, the 3rd pre-ballast water-Drilling Water shares cabin 15, the 4th pre-ballast water-Drilling Water shares the pre-ballast chamber 4 in cabin 17, first, the 9th pre-ballast chamber 16 and the tenth pre-ballast chamber 18 in cabin 5, second and is 3915m
3, the volume that the second pre-ballast chamber 7, the 3rd pre-ballast chamber 8, the 4th pre-ballast chamber 9, the 5th pre-ballast chamber 10, the 6th pre-ballast chamber 11, the 7th pre-ballast chamber 12, the 8th pre-ballast chamber 13, pre-ballast water-buffering share cabin 14 is 2470m
3.
In method for arranging at the bottom of a kind of jack-up drilling unit bilateral of the present invention, each ship cabin arrangement is become above-mentioned form, and it has following technical advantage compared with prior art:
1. the pre-ballast chamber of the bow of platform floor is larger than the volume of the pre-ballast chamber of the stern of platform floor, such arrangement is conducive to the stress balance that platform ensures three pile legs under above-mentioned operating mode, the generation of the dangerous situation avoiding the platform caused due to load inequality to tilt to stern.
2. fresh water tank, fuel oil tank, salt water tank, base oil cabin, bilge water tank and dirty oil tank be furnished with the length being beneficial to and shortening filling pipeline, reduce pipeline and arrange that difficulty also reduces laid down cost.
3. arrange that the advantage that six pre-ballast water-Drilling Waters share cabin and a drilling well water tank is, can meet the functional requirement of different platform system.
4. pre-ballast water-deck water of releasing shares the problem that layout that cabin and pre-ballast water-buffering share cabin solves liquid tank space anxiety in double bottom, and pre-ballast water-deck water of releasing shares cabin and also meets the design that no pollution discharges simultaneously.
The present invention also has the improvement that another one is great especially, and this improvement makes the laid down cost of building jack-up drilling unit double bottom greatly reduce, and its concrete layout is improved as described below.
Between first fresh water tank 19 and drilling well water tank 25, the 11 be all furnished with larboard tube passage 37 between ballast chamber 20 and salt water tank 26 in advance, in larboard tube passage 37, be furnished with saltwater system endless tube, pre-ballasting system larboard collector and bilge piping system larboard collector;
Between second fresh water tank 22 and drilling well water tank 25, the 13 be all furnished with starboard tube passage 38 between ballast chamber 23 and base oil cabin 27 in advance, in starboard tube passage 38, be furnished with saltwater system endless tube, pre-ballasting system starboard collector and bilge piping system starboard collector;
Pre-ballasting system larboard collector and pre-ballasting system starboard collector are furnished with 13 remote valves altogether, bilge piping system larboard collector and bilge piping system starboard collector are furnished with 15 screw down nonreturn valves altogether;
Larboard sea chest 39 is furnished with between the pre-ballast chamber 20 of 3rd pre-ballast chamber the 8 and the 11, pre-ballast water-buffering shares between the pre-ballast chamber 23 in cabin the 14 and the 13 and is furnished with starboard sea chest 40, and larboard sea chest 39 and starboard sea chest 40 are connected by the pipe lane 41 be arranged between the first fuel oil tank 34 and salt water tank 26;
Seawater main, pre-ballast main and bilge main is furnished with in pipe lane 41, seawater main is furnished with two remote valves, two seawater filters, two check valves and three butterfly valves, pre-ballast main is furnished with 14 remote valves, bilge main is furnished with a butterfly valve and two remote valves.
More than be designed with great technological breakthrough by what arrange in double bottom that left and right side of a ship tube passage and pipe do, specifically: left and right side of a ship tube passage and pipe lane are set in double bottom, seawater main, bilge main etc. can be arranged in pipe lane, simultaneously house steward's valve and each valve connecting each arm also can centralized arrangement, convenient operation and maintenance; Owing to arranging tube passage, valve can change dry type into by immersion, reduces the purchase cost of valve.
If pipe is not done that is each pipe fitting and is worn in water tank, middle also can through the bulkhead of water tank one by one, bigbore like this pipe fitting wears starboard from larboard, can need through a lot of longitudinal bulkhead.On the one hand, bigbore pipe fitting crossing cabin needs on bulkhead, open very large mouth, causes damage to the intensity of bulkhead structure; On the other hand, tube passing through cabin needs additionally to increase thickness of pipe in crossing cabin position, increases the quantity (pipeline section of thickening will make separately, then couples together with flange, namely increases cost) of pipe fittings.In addition, because pipe is done to be an empty cabin, can not priming petock inside during operation, people can do the inside to pipe below and operate, safeguards pipe and parts, is also easily to platform user.Meanwhile, be arranged on compared with valve member on pipe fitting does setting with not pipe, valve buying can substitute wet type by dry type, reduces costs.
If do not have port and starboard tube passage, the design of double bottom just can not adopt form of headers, and pipe fitting can not centralized arrangement, and the difficulty that its pipe fitting is arranged will increase, human users's inconvenience.Meanwhile, be arranged on compared with valve member on pipe fitting does setting with not pipe, valve buying can substitute wet type by dry type, reduces costs.
Following table is procurement price and the pipe fitting in prior art of pipe fitting and valve member in the present invention and comparing (cost that the price in table is saved for each jack-up drilling unit double bottom) of valve member procurement price, clearly can see from table, not only saved a large amount of laid down cost by improvement of the present invention.
| Expense is detailed | The cost (ten thousand yuan) that the present invention saves compared with prior art |
| Valve | 24 |
| Driving head | 96 |
| Multi-core pipe | 7.32 |
| Watertight cable | 2 |
| Support and Tubing pipe crossing cabin part | 5 |
| Installation and adjustment expense | 15 |
| Add up to | 149.92 |
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (2)
1. the method for arranging of a jack-up drilling unit double bottom, this double bottom comprises platform floor, machinery deck and platform peripheral board, the bow of described platform floor, stern larboard and stern starboard are furnished with the first spud leg (1), the second spud leg (2) and prism of third order leg (3) respectively, it is characterized in that
The surrounding of described first spud leg (1) is furnished with the first pre-ballast chamber (4) being positioned at described first spud leg (1) left and right sides and rear side, the first pre-ballast water-Drilling Water being positioned at described first spud leg (1) front left side shares cabin (5) and be positioned at described first pre-ballast water-Drilling Water shares right side, cabin (5) and the second pre-ballast water-Drilling Water being positioned at described first spud leg (1) forward right side shares cabin (6);
The surrounding of described second spud leg (2) is furnished with the second pre-ballast chamber (7) being positioned at described second spud leg (2) front left side, the 3rd pre-ballast chamber (8) being positioned at described second spud leg (2) forward right side, is positioned at the 4th pre-ballast chamber (9) on described second spud leg (2) right side and is positioned at the 5th pre-ballast chamber (10) of described second spud leg (2) left rear side;
The surrounding of described prism of third order leg (3) is furnished with the 6th pre-ballast chamber (11) being positioned at described prism of third order leg (3) forward right side, the 7th pre-ballast chamber (12) being positioned at described prism of third order leg (3) left side, is positioned at the 8th pre-ballast chamber (13) of the right back front side of described prism of third order leg (3) and is positioned at the shared cabin (14) of pre-ballast water-buffering of described prism of third order leg (3) front left side;
The bow larboard of described platform floor is furnished with the 9th pre-ballast chamber (16) being positioned at described first pre-ballast water-Drilling Water the 3rd pre-ballast water-Drilling Water shared on the left of cabin (5) and sharing cabin (15) and be positioned at the described first pre-ballast chamber (4) left side;
The bow starboard of described platform floor is furnished with the tenth pre-ballast chamber (18) being positioned at described second pre-ballast water-Drilling Water the 4th pre-ballast water-Drilling Water shared on the right side of cabin (6) and sharing cabin (17) and be positioned at the described first pre-ballast chamber (4) right side;
The midships section larboard of described platform floor is furnished with the first fresh water tank (19) being positioned at the described 9th pre-ballast chamber (16) rear side, the 11 pre-ballast chamber (20) being positioned at described first fresh water tank (19) rear side and is positioned at described first fresh water tank (19) rear side and is positioned at the 12 pre-ballast chamber (21) on the left of the 11 pre-ballast chamber (20);
The midships section starboard of described platform floor is furnished with the second fresh water tank (22) being positioned at the described tenth pre-ballast chamber (18) rear side, the 13 pre-ballast chamber (23) being positioned at described second fresh water tank (22) rear side and is positioned at described second fresh water tank (22) rear side and is positioned at the 14 pre-ballast chamber (24) on the right side of the 13 pre-ballast chamber (23);
The midships section of described platform floor is furnished with the drilling well water tank (25) being positioned at the described first pre-ballast chamber (4) rear side, the salt water tank (26) being positioned at described drilling well water tank (25) rear side and is positioned at described drilling well water tank (25) rear side and the base oil cabin (27) be positioned on the right side of described salt water tank;
The stern larboard of described platform floor is furnished with the first pre-ballast water-deck being positioned at the described 3rd pre-ballast chamber (8) right side water of releasing and shares cabin (28), and bilge water tank (29) and dirty oil tank (30), the five pre-ballast water-Drilling Waters be positioned on the right side of the described 5th pre-ballast chamber (10) share cabin (31);
The stern starboard of described platform floor is furnished with and is positioned at second pre-ballast water-deck that described pre-ballast water-buffering shares left side, cabin (14) water of releasing and shares cabin (32) and the 6th pre-ballast water-Drilling Water be positioned on the left of the described 8th pre-ballast chamber (13) shares cabin (33);
Described first pre-ballast water-deck water of releasing shares cabin (28) and second pre-ballast water-deck water of releasing and shares the second fuel oil tank (35) being furnished with the first fuel oil tank (34) between cabin (32) and being positioned on rear side of described first fuel oil tank, and the described 5th pre-ballast water-Drilling Water shares cabin (31) and the 6th pre-ballast water-Drilling Water and to share between cabin (33) and the rear side being positioned at described second fuel oil tank (35) is furnished with the 15 pre-ballast chamber (36);
All be furnished with larboard tube passage (37) between described first fresh water tank (19) and drilling well water tank (25), between the 11 pre-ballast chamber (20) and salt water tank (26), in described larboard tube passage (37), be furnished with saltwater system endless tube, pre-ballasting system larboard collector and bilge piping system larboard collector;
All be furnished with starboard tube passage (38) between described second fresh water tank (22) and drilling well water tank (25), between the 13 pre-ballast chamber (23) and base oil cabin (27), in described starboard tube passage (38), be furnished with saltwater system endless tube, pre-ballasting system starboard collector and bilge piping system starboard collector;
Described pre-ballasting system larboard collector and pre-ballasting system starboard collector are furnished with several remote valves altogether, described bilge piping system larboard collector and bilge piping system starboard collector are furnished with several screw down nonreturn valves altogether;
Larboard sea chest (39) is furnished with between described 3rd pre-ballast chamber (8) and the 11 pre-ballast chamber (20), described pre-ballast water-buffering shares and is furnished with starboard sea chest (40) between cabin (14) and the 13 pre-ballast chamber (23), and described larboard sea chest (39) and starboard sea chest (40) are done (41) by the pipe be arranged between described first fuel oil tank (34) and salt water tank (26) and be connected;
Described pipe is done to be furnished with seawater main, pre-ballast main and bilge main in (41), described seawater main is furnished with several remote valves, several seawater filters, several check valves and several butterfly valves, described pre-ballast main is furnished with several remote valves, described bilge main is furnished with several butterfly valves and several remote valves;
Pre-ballast water-the Drilling Water of described first, second, third and fourth shares the volume and first, the 9th identical with the volume of the tenth pre-ballast chamber (4,16,18) of cabin (5,6,15,17), described second, third, the 4th, the 5th, the 6th, the 7th, the volume of the 8th pre-ballast chamber (7,8,9,10,11,12,13) is identical with the volume that pre-ballast water-buffering shares cabin (14), and the volume of the described first pre-ballast chamber is greater than the volume of the described second pre-ballast chamber.
2. the method for arranging of a kind of jack-up drilling unit double bottom as claimed in claim 1, it is characterized in that, the pre-ballast water-Drilling Water of described first, second, third and fourth shares the volume and first of cabin (5,6,15,17), the volume of the 9th and the tenth pre-ballast chamber (4,16,18) is 3915m
3, described second, third, the 4th, the 5th, the 6th, the 7th, the volume of the 8th pre-ballast chamber (7,8,9,10,11,12,13) and the pre-ballast water-buffering volume that shares cabin (14) is 2470m
3.
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