CN105525602A - Shallow water oil-gas platform using underwater flexible storage device - Google Patents
Shallow water oil-gas platform using underwater flexible storage device Download PDFInfo
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- CN105525602A CN105525602A CN201610069856.3A CN201610069856A CN105525602A CN 105525602 A CN105525602 A CN 105525602A CN 201610069856 A CN201610069856 A CN 201610069856A CN 105525602 A CN105525602 A CN 105525602A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/78—Large containers for use in or under water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
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Abstract
The invention discloses a shallow water oil-gas platform using an underwater flexible storage device. The shallow water oil-gas platform comprises a wellhead platform and a production module. Both the wellhead platform and the production module are provided with pile foundation parts. The pile foundation part of the production module is provided with a support base. The underwater flexible storage device fixedly connected with the production module is arranged under the production module. The underwater flexible storage device is placed on the support base, and the underwater flexible storage device and the support base are connected through a horizontal locating structure. The underwater flexible storage device comprises a sealed storage tank and a plurality of storage single bodies. The multiple storage single bodies are vertically arranged and fixedly connected in the sealed storage tank. The sealed storage tank is provided with a water pipe communicating with the outside. Each storage single body is provided with a flexible soft bag and an open type protective sleeve. Each flexible soft bag is provided with a medium loading-unloading pipeline connected with the production module. The medium loading-unloading pipelines are fixed to the open type protective sleeves respectively. The shallow water oil-gas platform is safe and environmentally friendly. The flexible soft bags are adopted for storing media to separate the media from water. The volume utilization ratio is high, and the cost is low.
Description
Technical field
The invention belongs to offshore and gas development field, particularly relate to a kind of shallow water oil gas platform using flexible storage device under water.
Background technology
Two kinds of methods are had to carry out subsequent treatment: 1) export with seabed pipeline after offshore oilfield output crude oil; 2) be stored in regular shuttle tanker in Fuel Tanking Unit to transport, this Fuel Tanking Unit can be a fixing ingredient of production platform, also can be an independent structure.If the output of an offshore oilfield is large not, laying expensive pipeline under the ocean just loses more than gain, and in this case will exploit and just can only use certain low cost but safe and reliable Fuel Tanking Unit.
Where essential Fuel Tanking Unit is specifically placed in.Optional position only has three: 1) more than Water Plane be fixed in platform topsides chunk; 2) on the water surface as a part for floating structure; 3) below Water Plane as a part for platform substructure, or as an independent facility.The Fuel Tanking Unit being positioned at below Water Plane needs to produce chunk by piping and platform and to be connected the handling operation fetching and carry out crude oil.Excellent, the shortcoming of three each tools in position in actual applications.1) time more than Water Plane: Fuel Tanking Unit, usually used as a standing part of upper strata chunk, is directly placed under technical module and accommodation module.Advantage is the impact of the ocean current power not produced by wave and tide.But huge Fuel Tanking Unit is placed under technical module and accommodation module can form serious potential safety hazard.In addition, this layout adds huge weight to table top worse, makes it to produce very large weight change in crude oil cargo handling process, thus greatly have impact on the motor imagination feature of platform.Therefore, this scheme be only applied on a small quantity be at present positioned at Very Shallow Water territory fixed platform on.2) at the water surface: advantage to increase the oil storage volume of platform class like ship shape FPSO floating structure easily.But shortcoming is, floating structure is subject to the impact of the environmental forces that stormy waves produces, thus the mooring system needing dependence one expensive or navigation system are to keep marine positioning, therefore can be more much higher than the fixed platform cost of routine.For this reason, floating structure only just can be used when the tangible cost of oil pipeline needed for deepwater production or shallow water recover the oil is too high.3) below Water Plane: no matter for fixed platform or floating platform, this is all optimum position, as long as because the underwater degree of depth of oil storage tank is enough dark, the environmental forces produced by wind just disappears completely, and the environmental forces produced by wave also can weaken greatly.In addition, the center of gravity of platform also can decline, and is conducive to dynamic characteristics and the motor imagination of platform on the whole.But underwater oil storing device can face many challenges.The huge buoyancy that most stern challenge produces when being and how processing loading and unloading oils and the change of corresponding platform weight.
Crude oil or other liquid hydrocarbons that fittings storage device has two kinds of methods to store to process usually.The first cries " wet type oil storage method ", is about to oil and is stored in together with seawater in same oil storage tank.Because density is different, crude oil or liquid hydrocarbon can float over the top of oil storage tank, although and profit can directly both meetings of contact be divided into two-layer up and down naturally.The crude oil processed when loading operation is injected in oil storage tank, and the seawater of simultaneous equal can be discharged out oil storage tank, thus the volume of oil storage pot liquid is remained unchanged.The process of emptying is just in time contrary, and seawater is injected into the crude oil of equivalent in tank and is extruded outside tank.When the great advantage of this oil storage method is loading and unloading oils storage tank seat at the bottom of weight change very little, variable quantity is only about 15% of weight at the bottom of maximum seat.Another advantage is, because the pressure of storage tank its inside in whole application life remains hydrostatic pressure balance with outside seawater, does not therefore need it to be designed to pressure vessel.But the method also has three large shortcomings.First is exactly the worry of environmental pollution.Because storage tank constantly rocks under water, the contact surface of crude oil and seawater can produce a mixed layer, and this mixed layer will to environment as discharged.Second is heat-insulating problem, and oil keeps liquid state to need heating and thermal insulation, and the water come in outside is cold, and therefore the large-area contact of profit is difficult to take Insulation to crude oil.3rd, the method cannot storage of water insoluble liquid, such as methyl alcohol.Just because of these shortcomings, particularly problem of environmental pollution, although insider has made huge effort, no matter wet type oil storage method has been that in fixed platform or floating platform, obtain the case of practical application few.
The method of the second oil storage is " dry type oil storage method ".This method profit is used directly to contact, the crude oil therefore no matter processed or liquid hydrocarbon can be stored in underwater storage tank.In addition, crude oil can be incubated well.But, the method faces two serious challenge.First, a large amount of buoyancy can be produced in emptying process.Secondly, need to use inert gas, and inert gas leaks meeting to environment.The gas that closed for inert gas injection oil storage tank oil reservoir superjacent air space stops crude oil to volatilize is spilt storage tank and causes air pollution.But, the generation of inert gas in application, injection form the process such as sealant, exhaust and all may leak and become pollution sources.In above-mentioned multiple serious challenge, the solution eliminating a large amount of buoyancy problem typically uses the gravity foundation of a cement manufacture to offset the buoyancy produced in emptying process.Another method solving excessive buoyancy in addition builds several ballast tank on oil storage tank limit, offsets the overall buoyancy produced during emptying toward water filling in ballast tank.No matter which kind of method all can make whole storage device itself very heavy.Above-mentioned variety of problems, the case making dry type oil storage method obtain practice in offshore oil production industry is little, and in only case, the overwhelming majority is applied to cement gravity foundation platform.
On October 23rd, 2012, american documentation literature US8292546B2 discloses a kind of concrete scheme of dry type oil storage method, propose a wet tank and join a corresponding seawater ballast tank, both are symmetrical, above two pot liquids, be all injected with inert gas and intercommunication.During oil loading and unloading, this Fuel Tanking Unit constantly carries out the uniformity that the displacement of profit weight carrys out holding device gross mass, with timer center of gravity only to move up and down along an axis by two cover oil/water pumping systems.The great advantage of this system is that the gross weight of device in the process of loading and unloading oils remains consistent.But there are three problems in this device.The first, the actual reserves of device entirety is very low, because the volume of more than 50% of system need be used for storing seawater and inert gas.Therefore, the excessive buoyancy more than 50% can be produced during dry type oil storage method emptying, and wet type oil storage method only produces the buoyancy of about 15%.In order to solve the problem of above-mentioned excessive buoyancy, usually use heavy cement structures, instead of use the Steel material that offshore platform is conventional.Cement structures directly sits the end, easily produces undermining and empties phenomenon, cause a hidden trouble to platform safety.The second, due to the existence of seawater ballast tank, add the overall weight of device.3rd, the effective operation of whole Fuel Tanking Unit needs to rely on and can carry out respectively with taking out with one of row complicated sundstrand pump system the crude oil in oil storage tank and ballast tank or seawater, and this system exists the potential safety hazard run reliably and with long-term.
Summary of the invention
The present invention provides a kind of shallow water oil gas platform using flexible storage device under water, this platform safety environmental protection for solving in known technology the technical problem that exists, adopts flexible soft bag storage medium, and realize being separated of medium and water, capacity utilization is high, and cost is low.
The present invention provides a kind of shallow water oil gas platform using flexible storage device under water for solving in known technology the technical problem that exists, comprise wellhead platform and produce chunk, described wellhead platform and described production chunk are equipped with pile foundation parts, and the pile foundation parts producing chunk are provided with base for supporting; The under water flexible storage device affixed with it is provided with in the below of described production chunk; The described device of flexible storage under water puts off on described base for supporting, and the two is by horizontal location anatomical connectivity; The described device of flexible storage under water comprises airtight storage tank and multiple storage monomer, and multiple described storage monomer vertically arranges and is fixed in described airtight storage tank; Described airtight storage tank is provided with the water pipe be in communication with the outside; Described storage monomer is provided with a soft bag of flexibility and an open sheath, and the soft bag of described flexibility is provided with the handling medium pipeline be connected with described production chunk, and described handling medium pipeline is fixed on described open sheath.
The soft bag of described flexibility is provided with the note extract duct be connected with described production chunk.
Be provided with the seawater be connected with described production chunk to reclaim monitor pipeline at the top of described open sheath.
An adpting flange is provided with in the bottom of the soft bag of described flexibility, bottom adpting flange is connected with the bottom of described open sheath, the soft bag of described flexibility is provided with the thermal medium be connected with described production chunk to annotate pipeline, the lower end of described thermal medium filling pipeline is inserted into the bottom of the soft bag of described flexibility.
Multiple described storage set of monomers synthesizes a cellular structure, between relative airtight reservoir walls and described open sheath, be provided with junction steel plate.
Described water pipe is fixed on the lateral wall of described airtight storage tank, and the delivery port of described water pipe is connected to the top of described airtight storage tank, and the water inlet of described water pipe is arranged on the below of described airtight storage tank, and described water pipe is provided with one way valve.
Anti-collision fender system I is connected with away from the side of described wellhead platform at described airtight storage tank.
Described production chunk is supported by many tube-shaped legs, and described tube-shaped legs is fixed on the base plate of described airtight storage tank, is connected between many described tube-shaped legs by steel beam column.
Described horizontal location structure comprises two of being fixed on described base for supporting column in place waterborne and two column in place and two short sleeves be fixed in around described airtight storage tank and two long sleeve pipes under water, described column in place waterborne is near described wellhead platform, Water Plane is exposed at the top of described column in place waterborne, described column in place is under water away from described wellhead platform, the top of described column in place is under water positioned under Water Plane, described in described long casing pipe sleeve is contained under water on column in place, described short sleeve is sleeved on described column in place waterborne.
An adpting flange is provided with at the top of the soft bag of described flexibility, top adpting flange is connected with the top of described open sheath, top adpting flange is provided with sleeve pipe, described sleeve pipe is through described open sheath, and it is affixed with described open sheath, the pipeline of corresponding described storage monomer is included in described sleeve pipe, be positioned at multiple sleeve pipes of open sheath tip described in each and be interconnected to form piping, multiple described storage monomer links together by described piping, described piping is provided with two convergence tubes, convergence tube described in every root is connected with described production chunk through a described tube-shaped legs.
The advantage that the present invention has and good effect are:
One) in use, owing to being stored medium all the time in the airtight storage tank that uses in this oil gas platform and seawater is full of, when handling crude oil or other liquid hydrocarbons airtight storage tank seat at the bottom of weight change very little, good stability.
Two) because the pressure of storage device its inside in whole application life used in this oil gas platform remains hydrostatic pressure balance with outside seawater, therefore the present invention goes for any depth of water, and do not need to use pressure vessel as airtight storage tank, therefore the construction cost of this storage device is low.
Three) present invention preserves the major advantage of dry type oil storage method, adopt flexible soft bag storage medium, realize being separated of medium and water, i.e. crude oil or other liquid hydrocarbons directly do not contact with seawater, can be incubated, can storage of water insoluble liquid such as methyl alcohol.Meanwhile, instant invention overcomes two large shortcomings of dry type oil storage method, namely use when inert gas and emptying and produce excessive buoyancy.
Four) storage device used in this oil gas platform is equipped with note extract duct, enables this storage device overall from floating, has from resettlement, from installation function; Do not need marine crane barge and transport barge, can construction cost be reduced.
Five) storage device used in this oil gas platform is positioned at below the water surface and does not bear wind-force, bears comparatively rips power (relevant with the degree of depth dived beneath the water in oil storage tank top), and only bears limited stream power; The potential safety hazard of major part from extraneous load can be eliminated.
Six) storage device used in this oil gas platform is equipped with thermal medium filling pipeline, can realize the dynamic storing of storage medium, ensures the mobility of storage medium at memory period.
Seven) storage device used in this oil gas platform is equipped with seawater to reclaim monitoring pipeline, can realize the Real-Time Monitoring to the leak case of oil storage system under water; Flexible soft bag in airtight storage tank not by external load action and have multiple prevent storage medium from leaking structure and seawater discharge detection architecture to meet environmental requirement.
Eight) there is with traditional dry type oil storage method comparing with traditional wet type oil storage method, present invention, avoiding the generation of oil mixing with water layer, also do not use inert gas, avoid the phenomenon that inert gas and oil gas enter air and pollutes and waste, meet the requirement of safety and environmental protection.
Nine) due to without the need to subsidiary counterweight water tank, without the need to using inert gas, the overall storage capacity of the storage device used in this oil gas platform is fully used, and capacity utilization is high.In addition, also carry out moment pump drainage crude oil without the need to a complicated oil and water displacement system and seawater carrys out the constant of the overall gross weight of keeping system, system construction is simple.
Ten) the open sheath in the airtight storage tank used in this oil gas platform and the soft bag of flexibility in sheath are designed to the cellular structure synthesized with multiple storage set of monomers, convenient factory to storage monomer realize standardized production.
11) flexible storage device and production set of tiles benefit altogether are under water had:
1) easy for installation, only need just can complete dismounting, transition reinstalling at new oil gas field with tugboat, be conducive to the rolling development realizing multiple different water depth marginal oil field, and achieve from installing, from dismounting pattern to reach the minimum of mounting cost;
2) conventional steel structure, lightweight and easily build is adopted;
3) suitable weight is had owing to producing chunk self, and the flexible storage device inner liquid that there is suitable weight all the time in process of production under water, these weight can provide weight at the bottom of the seat of required minimum requirements for flexible storage device under water when loading and unloading medium operation, to guarantee its sit on bottom stability, therefore, flexible storage device need not weld with its base for supporting under water.
4) a fender system can be equipped with and provide safe and reliable alongside for carrying oily shuttle tanker.Therefore, it is possible to reduce the freight of medium.
12) this oil gas platform has a segment distance in the bottom of flexible storage device and seabed under water, can avoid the phenomenon causing because ocean current washes away platform periphery submarine soil emptying, and eliminates platform safety hidden danger.
13) drilling and producing platform in this oil gas platform is divided into two minor structures: wellhead platform and production chunk add the combining structure of flexible storage apparatus integration under water.The main cause being divided into two minor structures allows it Each performs its own functions.By adjusting length and the height of wellhead platform, different operating water depths and edaphic condition can be adapted to.If the wave height in certain a slice marine site is identical with wind friction velocity, produces chunk and just can realize standardization.In like manner, added length and the height of the combining structure of flexible storage device under water by adjustment production chunk, different operating water depths can be adapted to.
In sum, the present invention utilizes the soft bag of flexibility being placed in open sheath to carry out storage medium, realize medium with this not contact with water, open sheath communicates with seawater, expand after filling medium in flexible soft bag the seawater extruded in open sheath, flexible soft bag draws off medium after-contraction, the space reserved is full of automatically by seawater, therefore, the gross weight of flexible storage device remains unchanged substantially under water, reliable and stable, safety and environmental protection, capacity utilization is high, cost is low, can install easily, dismounting and transition easily, reinstall at find easily, can continuous several times use, these features are all well suited for the exploitation of same marine site marginal oil field, therefore, the present invention is used for the exploitation of shallow water marginal oil field, good economic benefit can be realized.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is wellhead platform of the present invention, produces chunk pile foundation parts and base for supporting anatomical connectivity all-in-one-piece structural representation;
Fig. 3 is the A-A ＇ cut-away view of Fig. 2;
Fig. 4 schematic diagram that to be production chunk of the present invention link into an integrated entity with flexible storage device under water;
Fig. 5 is the A-A ＇ cut-away view of Fig. 4;
Fig. 6 is the device of flexible storage under water top view of the present invention;
Fig. 7 is that in Fig. 6, multiple storage monomer is vertically arranged in the stereogram in airtight storage tank;
Fig. 8 is one of the present invention and stores the structural representation of monomer under the soft bag of flexibility fills oil condition;
Fig. 9 is that a storage monomer of the present invention is not filling the structural representation under oil condition;
Figure 10 is the soft bag schematic diagram of flexibility of the present invention;
Figure 11 is the A-A cut-away view of Figure 10;
Figure 12 is the top view of another kind of structure of the present invention.
In figure: 110, flexible soft bag, 111-1, bottom adpting flange, 111-2, top adpting flange, 113, topping, 114, insulation layer, 115, sealant, 116, storage medium, 117, seawater, 118, pressure-bearing ring flat-plate, 119, muff, 120, open sheath, 130, sleeve pipe, 140, piping, 131, thermal medium filling pipeline, 132, handling medium pipeline, 133, note extract duct, 134, seawater reclaims monitoring pipeline, 150, water pipe, 200, airtight storage tank, 201, pipeline, 202, steel plate, 204, water proof sleeve, 205, seabed, 206, Water Plane, 300, wellhead platform, 301, column in place waterborne, 302, column in place under water, 303, fender system II, 304, , 305, steel beam column, 306, support seat cushion I, 307, pile foundation parts, 308, base for supporting, 400, produce chunk, 401, short sleeve, 402, long sleeve pipe, 404, Anti-collision fender system I, 405, support seat cushion II.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Figure 11, a kind of shallow water oil gas platform using flexible storage device under water, comprise wellhead platform 300 and produce chunk 400, described wellhead platform 300 and described production chunk 400 are equipped with pile foundation parts 307, and the pile foundation parts 307 producing chunk are provided with base for supporting 308; The under water flexible storage device affixed with it is provided with in the below of described production chunk 400; The described device of flexible storage under water puts off on described base for supporting 308, and the two is by horizontal location anatomical connectivity; The described device of flexible storage under water comprises airtight storage tank 200 and multiple storage monomer, and multiple described storage monomer vertically arranges and is fixed in described airtight storage tank 200; Described airtight storage tank 200 is provided with the water pipe 150 be in communication with the outside; Described storage monomer is provided with a soft bag of flexibility 110 and an open sheath 120, and the soft bag of described flexibility 110 is provided with the handling medium pipeline 132 be connected with described production chunk 400, and described handling medium pipeline 132 is fixed on described open sheath 120.
When loading, unloading storage medium, because the hydraulic pressure in all open sheaths 120 is equally distributed, therefore storage medium 116 (can be crude oil or other liquid hydrocarbons) can freely flow to or flow out the soft bag 110 of all flexibilities simultaneously.Phenomenon is emptied in order to prevent.The bottom surface of the described device of flexible storage under water and the distance in seabed are more preferably greater than 2 meters.
Refer to Fig. 7 ~ Fig. 9, in the present embodiment, the soft bag of described flexibility 110 is provided with the note extract duct 133 be connected with described production chunk 400.By note extract duct 133 to flexibility soft bag 110 gas injection and exhaust, can by realizing the underwater buoyancy change of whole storage device, thus change the drinking water of whole storage device, and then realize storage device and produce certainly installing and dismounting certainly of chunk 400, do not need to rely on marine crane barge and transport barge is installed, save installation cost.
In the present embodiment, be provided with the seawater be connected with described production chunk 400 to reclaim monitor pipeline 134 at the top of described open sheath 120.Seawater reclaims monitoring pipeline 134 for pumping the seawater extruding open sheath 120 owing to injecting storage medium, enter oil gas field top exhaust system process rear discharge up to standard, monitor the seawater be extruded simultaneously and whether contain storage medium 116, for realizing the Real-Time Monitoring of flexible soft bag 110 leakage situation.
In the present embodiment, an adpting flange is provided with in the bottom of the soft bag 110 of described flexibility, bottom adpting flange 111-1 is connected with the bottom of described open sheath 120, the soft bag of described flexibility 110 is provided with the thermal medium be connected with described production chunk 400 to annotate pipeline 131, the lower end of described thermal medium filling pipeline 131 is inserted into the bottom of the soft bag 110 of described flexibility.Thermal medium filling pipeline 131 is for injecting bottom flexible soft bag 110 by the storage medium after heating, load and unload medium pipeline 132 simultaneously and pump the storage medium cooled by external environment, enter the heating system on oil gas field top, make the medium of storage be in dynamic circulation always, to guarantee the mobility of storage medium, be suitable for cold environment.
In the present embodiment, be provided with the pressure-bearing ring flat-plate 118 that the outer surface of cupular part after being full of medium with it coincide above the soft bag 110 of described flexibility, described pressure-bearing ring flat-plate 118 is affixed with described open sheath 120.The use of described pressure-bearing ring flat-plate 118 is: when described flexibility soft bag 110 full load, supports one that formed due to storage medium 116 and the density contrast of seawater 117 from top to bottom upward pressure at described open sheath 120 top.After the soft bag 110 of described flexibility is full of medium, the lateral surface of the soft bag of described flexibility 110 and the medial surface of described open sheath 120 are close to, thus form the environment of an anaerobic.This environment is unfavorable for marine attaching organism, particularly the existence of hard-shelled marine growth.The coating that the inner surface of described open sheath 120 has water repellent bio to adhere to.Prevent long hard-shelled biological attachment on inwall.Rub for a long time may cause damage to the soft bag 110 of flexibility with this attachment marine growth.
In the present embodiment, an adpting flange is provided with at the top of the soft bag 110 of described flexibility, top adpting flange 111-2 is connected with the top of described open sheath 120, top adpting flange is provided with sleeve pipe 130, described sleeve pipe 130 is through described open sheath 120, and it is affixed with described open sheath 120, the pipeline of corresponding described storage monomer is included in described sleeve pipe 130, in the present embodiment, thermal medium filling pipeline 131, handling medium pipeline 132, note extract duct 133 and seawater recovery monitoring pipeline 134 are all included in sleeve pipe 130.Pipeline thermal insulating sleeve 119 is also provided with in described sleeve pipe 130.The multiple sleeve pipes 130 being positioned at open sheath 120 top described in each are interconnected to form piping 140, multiple described storage monomer links together by described piping 140, described piping 140 is provided with two convergence tubes, and convergence tube described in every root is connected with described production chunk 400 through a described tube-shaped legs 201 described below.Refer to Fig. 6 and Figure 12, the spatial relationship of each pipeline in piping is shown in figure, the reason using two tube-shaped legs 201 to form two convergence tube passages instead of one is: time one of them convergence tube passage goes wrong, another one convergence tube passage can also normal work, can improve safety like this.
In addition, from foregoing, in the present embodiment, the top of flexible soft bag 110 and bottom are respectively docked by an adpting flange with open sheath 120 and are fixed.
Refer to Figure 10 ~ Figure 11, the soft bag 110 of described flexibility is provided with topping 113, insulation layer 114 and sealant 115 from outside to inside successively.
Refer to Fig. 6 and Figure 12, multiple described storage set of monomers synthesizes a cellular structure, between relative airtight reservoir walls and described open sheath, be provided with junction steel plate 202.This structure not only can be flexible soft bag 110 and provides protection, provides structural reinforcement also can to airtight storage tank 200.Described water pipe 150 is fixed on the lateral wall of described airtight storage tank 200, the delivery port of described water pipe 150 is connected to the top of described airtight storage tank 200, the water inlet of described water pipe 150 is arranged on the below of described airtight storage tank 200, and described water pipe 150 is provided with one way valve.The reason of such design is, one way valve can ensure that the water in airtight storage tank 200 can only reclaim monitoring pipeline 134 through seawater and pump, and can not flow into the sea through described water pipe 150, Leakage prevention pollutes.Having is exactly that the darker oxygen of water is fewer again, and the seed of attachment marine growth is also fewer.In addition, one or multi-channel filtration mesh screen can be installed in the import of water pipe 150 and enter airtight storage tank 200 to stop the seed of foreign material and attachment marine growth in seawater 117.
In addition, the conveniently maintenance of the soft bag 110 of described flexibility and replacing, openable lid is had at the top of open sheath 120, the sidewall of open sheath 120 needs not be monoblock steel plate, ensureing under structure has the prerequisite of sufficient intensity to form lattice structure by steel pipe or steel plate or even other high-strength material, weight and the cost of 120 can be reduced like this.No matter what kind of concrete structure open sheath 120 adopts, once after seawater enters airtight storage tank 200 from the water pipe 150 be in communication with the outside, can flow in all open sheaths 120, and finally make all open sheaths 120 be submerged in water.
Refer to Fig. 9, Fig. 9 shows a soft bag 110 of flexibility and is not filling storage medium 116, is placed among hexagonal open sheath 120.Certainly, open sheath 120 also can be other shapes being conducive to increasing volume filling rate.The space that storage medium 116 stays is filled up by the seawater poured in, and therefore there is a large amount of seawater 117 bottom open sheath 120.Now the bottom of flexible soft bag 110 can be squeezed flat by hydraulic pressure and make the storage medium 116 that is left by seawater 117 upwardly.
Refer to Fig. 1, shallow water oil gas platform shown in Fig. 1, its production chunk 400 is positioned at the side of wellhead platform 300, flexible storage device is under water fixed in the below producing chunk 400, sit and be placed on the base for supporting 308 that is fixed together with wellhead platform 300, safe and reliable.Flexible storage device is positioned at below the water surface under water, the top of flexible storage device and horizontal plane keep certain distance under water, and produce the certain altitude place of chunk 400 more than the water surface, when such combining structure can ensure that accident occurs, produce the safety of personnel on chunk.
Refer to Figure 12, Figure 12 shows the schematic diagram of another shallow water oil gas platform, in the space that the central authorities of airtight storage tank 200 are reserved with multiple water proof sleeve 204, is integrated among production platform unlike wellhead platform 300 with Fig. 1.
When dismantling that the transition of flexible storage device is to find under water, flexible soft bag 110 first need drain all storage mediums 116, then inject the seawater 117 that air extrudes open sheath 120, flexible storage device under water so just can be made to emerge 206, shift out with tugboat the scene of oil recovery easily.
Storage device of the present invention may be used for storing any water body, no matter is seawater or fresh water.In addition, storage device of the present invention oil storage also can store other hydrocarbon liquids.
Refer to Fig. 1 and Fig. 4, in the present embodiment, be connected with Anti-collision fender system I 404 at described airtight storage tank 200 away from the side of described wellhead platform 300.Tube-shaped legs 201 and airtight storage tank 200 provide pull-out capacity for Anti-collision fender system I 404, and Anti-collision fender system I 404 provides safe and reliable alongside for the shuttle tanker carrying oil.
Refer to Fig. 4 and Fig. 5, in the present embodiment, described production chunk 400 is supported by many tube-shaped legs 201, and described tube-shaped legs 201 is fixed on the base plate of described airtight storage tank 200, is connected between many described tube-shaped legs 201 by steel beam column 305.Structure is simple, reliable and stable.
Refer to Fig. 1 ~ Fig. 5 and Figure 12, for the ease of waterborne from installing and dismounting certainly, described horizontal location structure comprises two of being fixed on described base for supporting 308 column 301 in place waterborne and two column 302 in place and two short sleeves 401 be fixed in around described airtight storage tank 200 and two long sleeve pipes 402 under water, described column 301 in place waterborne is near described wellhead platform 300, Water Plane 206 is exposed at the top of described column 301 in place waterborne, described column 302 in place is under water away from described wellhead platform 300, the top of described column 302 in place is under water positioned under Water Plane 206, described in described long sleeve pipe 402 is sleeved under water on column 302 in place, described short sleeve 401 is sleeved on described column 301 in place waterborne.Said structure, for while flexible storage device and wellhead platform 300 alongside provide location under water, also for resisting the horizontal movement caused by marine environment during oil storage tank 200 dive operation, can steadily be installed smoothly.Conveniently the docking of sleeve pipe and column, is equipped with lower bell-mouth structure of air in the bottom of two short sleeves 401 and two long sleeve pipes 402.
In order to cushion collision during installation, rock-steady structure, described base for supporting 308 being provided with support seat cushion I 306, being provided with the support seat cushion II 405 with support seat cushion I 306 adaptation in the bottom of described airtight storage tank 200.
The supporting leg of wellhead platform 300 arranges a fender system II 303, when mounted, buffering can be provided for the alongside of airtight storage tank 200.
Wellhead platform 300 and the base for supporting 308 pile foundation parts be supported on seabed 205 can be suction piles also can be traditional foundation pile.
In the present invention, suitable weight self is had owing to producing chunk 400, and the flexible storage device inner liquid that there is suitable weight all the time in process of production under water, these weight can provide weight at the bottom of the seat of required minimum requirements for flexible storage device under water when loading and unloading medium operation, to guarantee its sit on bottom stability, therefore, flexible storage device need not weld with its base for supporting under water.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (10)
1. one kind uses the shallow water oil gas platform of flexible storage device under water, comprise wellhead platform (300) and produce chunk (400), described wellhead platform (300) and described production chunk (400) are equipped with pile foundation parts
It is characterized in that, the pile foundation parts producing chunk are provided with base for supporting (308);
The under water flexible storage device affixed with it is provided with in the below of described production chunk (400);
The described device of flexible storage under water puts off on described base for supporting (308), and the two is by horizontal location anatomical connectivity;
The described device of flexible storage under water comprises airtight storage tank (200) and multiple storage monomer, and multiple described storage monomer vertically arranges and is fixed in described airtight storage tank (200);
Described airtight storage tank (200) is provided with the water pipe (150) be in communication with the outside;
Described storage monomer is provided with a soft bag of flexibility (110) and an open sheath (120), the soft bag of described flexibility (110) is provided with the handling medium pipeline (132) be connected with described production chunk (400), and described handling medium pipeline (132) is fixed on described open sheath (120).
2. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, the soft bag of described flexibility (110) is provided with the note extract duct (133) be connected with described production chunk (400).
3. the shallow sea oil gas platform of use according to claim 1 and 2 flexible storage device under water, it is characterized in that, be provided with the seawater be connected with described production chunk (400) at the top of described open sheath (120) and reclaim and monitor pipeline (134).
4. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, an adpting flange is provided with in the bottom of the soft bag of described flexibility (110), bottom adpting flange (111-1) is connected with the bottom of described open sheath (120), the soft bag of described flexibility (110) is provided with the thermal medium be connected with described production chunk (400) to annotate pipeline (131), the lower end of described thermal medium filling pipeline (131) is inserted into the bottom of the soft bag of described flexibility (110).
5. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, multiple described storage set of monomers synthesizes a cellular structure, is provided with junction steel plate (202) between relative airtight reservoir walls and described open sheath.
6. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, described water pipe (150) is fixed on the lateral wall of described airtight storage tank (200), the delivery port of described water pipe (150) is connected to the top of described airtight storage tank (200), the water inlet of described water pipe (150) is arranged on the below of described airtight storage tank (200), and described water pipe (150) is provided with one way valve.
7. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, be connected with Anti-collision fender system I (404) described airtight storage tank (200) away from the side of described wellhead platform (300).
8. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, described production chunk (400) is supported by many tube-shaped legs (201), described tube-shaped legs (201) is fixed on the base plate of described airtight storage tank (200), is connected between many described tube-shaped legs (201) by steel beam column.
9. the shallow sea oil gas platform of use according to claim 1 flexible storage device under water, it is characterized in that, described horizontal location structure comprises two of being fixed on described base for supporting (308) column in place (301) waterborne and two column in place (302) and be fixed in described airtight storage tank (200) two short sleeves (401) around and two long sleeve pipes (402) under water, described column in place (301) waterborne is near described wellhead platform (300), Water Plane (206) is exposed at the top of described column in place (301) waterborne, described column in place under water (302) is away from described wellhead platform (300), the top of described column in place under water (301) is positioned under Water Plane (206), described in described long sleeve pipe (402) is sleeved under water on column in place (302), described short sleeve (401) is sleeved on described column in place (301) waterborne.
10. the shallow sea oil gas platform of use according to claim 8 flexible storage device under water, it is characterized in that, an adpting flange is provided with at the top of the soft bag of described flexibility (110), top adpting flange (111-2) is connected with the top of described open sheath (120), top adpting flange is provided with sleeve pipe (130), described sleeve pipe (130) is through described open sheath (120), and it is affixed with described open sheath (120), the pipeline of corresponding described storage monomer is included in described sleeve pipe (130), the multiple sleeve pipes (130) being positioned at open sheath (120) top described in each are interconnected to form piping (140), multiple described storage monomer links together by described piping (140), described piping (140) is provided with two convergence tubes, convergence tube described in every root is connected with described production chunk (400) through a described tube-shaped legs (201).
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| CN201610069856.3A CN105525602B (en) | 2016-02-01 | 2016-02-01 | Use the shallow water oil gas platform of underwater flexible storage device |
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| CN105525602B (en) | 2017-11-24 |
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