CN101648634B - Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method - Google Patents
Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method Download PDFInfo
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- CN101648634B CN101648634B CN2009103071046A CN200910307104A CN101648634B CN 101648634 B CN101648634 B CN 101648634B CN 2009103071046 A CN2009103071046 A CN 2009103071046A CN 200910307104 A CN200910307104 A CN 200910307104A CN 101648634 B CN101648634 B CN 101648634B
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Abstract
The invention belongs to the technical field of ocean engineering and relates to a cylinder oil storage device arranged at the bottom of deep sea. The oil storage device is a double-layered cylinder form steel structure without a bottom, comprising a double-layered circular deck as well as an internal toroidal steel plate and an external toroidal steel plate in the height direction; a bottom plate circular ring is arranged at the bottom of the toroidal steel plates; radial and toroidal sealed water tight bulkheads, radial human bulkhead and radial steel aggregates are arranged between the internal and external plates of the deck; the toroidal sealed water tight bulkhead and the steel aggregate in height direction are arranged between the internal and external toroidal steel plates; the steel aggregate is welded to the internal, external plates of the toroidal steel plates and the sealed water tight bulkheads; the deck and the internal plate of the toroidal steel plates form a water tight welded steel plate structure; an oil isolating system comprises an oil film, an oil isolating plate and an oil separating interlayer. The inside of the oil storage device can be communicated with the outside so that the device does not need to bear enormous pressure at the bottom of the sea, prevents the produced crude oil from polluting sea water and sea soil and is safe and practical.
Description
Technical field
The invention belongs to the ocean engineering field, be specifically related to a kind of abyssalbenthic novel cylinder Fuel Tanking Unit that places, be applicable to the storage of crude oil in the exploitation of deep-sea.
Background technology
Oil and natural gas occupies considerable status in energy mix.When land hydrocarbon resources through after long-term, the large scale mining, worldwide oil-gas exploration has been moved towards wide ocean with exploitation, and formed gradually investment high, have a big risk, energy industry frontier that new and high technology is intensive.Along with marine petroleum development is developed to off-lying sea, marine site, deep-sea by the coastal waters, the storage of crude oil also develops into marine oil storage by land oil storage.Marine oil storage can be divided into oil storage waterborne, water surface oil storage and three kinds of main modes of oil storage under water again.
Oil storage waterborne refers to petrol storage tank is arranged on the platform, as Chinese Bohai Sea chengbei oilfield.This oil storage mode capacity is limited, and construction investment is big, and is uneconomical, the small oil field that be only applicable to the shallow water territory, yields poorly.
Water surface oil storage refers to adopt oil tanker or oil barge oil storage, is widely used on the floating production system.This oil storage mode capacity is big, maneuverability, but is subject to the influence that sea situation changes.
Oil storage under water refers to oil tank is seated on the sea bed, or dives beneath the water.The characteristics of this oil storage mode are that safety, expense are low, capacity is big, can adapt to the needs of offshore oil development to off-lying sea, deep-sea development and structure subsea production system.
Oil storage is under water isolated with burning things which may cause a fire disaster, thunder and lightning because oil storage equipment is positioned at below the water surface, and not only oil and gas loss is little but also be difficult for catching fire, and has natural explosion-proof performance, and oil well also can be produced continuously when sea situation is abominable; Because Wave energy mainly concentrates near the water surface, oil tank places the main effect of having avoided wave under water, is subjected to wave force little.In addition, compare with oil storage waterborne, submerged tank can be saved expensive platform construction expense, and jar appearance is unrestricted, has huge oil storage capacity.For example, the GullfahsC concrete platform of installing at depth of water 220m place, the North Sea, a jar appearance reaches 140 ten thousand steres.This platform utilizes the tank body of storage tank to make platform base, supports Texas deck and develops into brill, adopts, stores up multifunctional gravity formula platform.This structural shape is built economical, and is safe in utilization, is convenient to bookkeeping, and expense is low.
Oil-water displacement process is generally adopted in oil storage under water.Utilize the principle of profit severe difference, adopt the technological process of oil-feed draining, water inlet oil extraction can make storage tank remain full of the situation of liquid like this, huge buoyancy when overcoming the tank body emptying, reduce the pressure reduction of tank body inside and outside wall, thereby reduce the ballast amount of works and the consumption of building materials, reach good work status.Adopt oil-water displacement process,, also can save the required safety anti-explosive system and device of conventional oil storage mode because tank body remains full of the liquid situation.
Summary of the invention
A kind of large-scale Fuel Tanking Unit and using method that is applicable to abyssalbenthic cylinder form that the present invention proposes to problems such as salt water contaminations, satisfies the oil storage demand of offshore platform short-term with the crude oil that overcomes deep-sea Fuel Tanking Unit undercapacity and produce.
For this reason, the present invention adopts following technical scheme:
A kind ofly place abyssalbenthic cylinder Fuel Tanking Unit, it is characterized in that, this device is cylinder form steel structure double-deck, the no end, comprises the double-layer circular deck and along the inside and outside two-layer hoop steel plate of short transverse, is provided with the base plate annulus in the bottom of hoop steel plate; Between the inner plating on deck and lamina rara externa, be provided with radially the sealing watertight bulkhead with hoop, manhole bulkhead radially and steel aggregate radially; Between inside and outside two-layer hoop steel plate, be provided with the steel aggregate of hoop sealing watertight bulkhead and short transverse, on inner plating, lamina rara externa and the sealing watertight bulkhead of hoop steel plate, all be welded with the steel aggregate; The inner plating of deck and hoop steel plate is a watertight welding steel structure; Its oil removal system comprises oil film, oil separating plate and oil removal interlayer, the oil removal interlayer is an annular metal sheet, its outer shroud edge and device ring are weldingly connected to the inner plating watertight of steel plate, ring edge is connected with oil film in it, be placed with the oil separating plate of a density of material between seawater and crude oil below the oil removal interlayer, this oil separating plate is circular, its radius is less than the interior ring radius of oil removal interlayer, oil separating plate can freely be fluctuated in the cabin, oil film is used to separate upper strata crude oil and bottom seawater for connecting the film structural component of oil separating plate and oil removal interlayer.
As preferred implementation, the oil inlet port of Fuel Tanking Unit of the present invention and oil outlet are positioned on the circular deck, and distribution is centrosymmetric; Radius * the height of described Fuel Tanking Unit=20m * 26m, the density of material of oil separating plate are between seawater and crude oil, and radius is 18m, and the oil removal interlayer is positioned at the inner 14m elevation of Fuel Tanking Unit place; The thickness of each lamina rara externa, inner plating and base plate annulus is all got 12mm, and described steel aggregate is L shaped steel, module of anti-bending section W=288cm
3, moment of inertia I=1324.8cm
4, it is of a size of 160mm * 100mm * 14mm.
Installation and oil storage method that the present invention provides a kind of Fuel Tanking Unit simultaneously and adopted comprise the following steps:
The first step: accessory holder is installed in bottom of device;
Second step: by barge with the towage of oil storage equipment to assigned address, finishing device relies on heavy the passing through of vertical subsidence of self gravitation when guaranteeing the Fuel Tanking Unit top, horizontal;
The 3rd step: after Fuel Tanking Unit leans on the gravity of himself to insert in the underwater soil, on the accessory holder around the bottom of device, add rectangular body concrete counterweight block structure;
The 4th step: by going into oil-piping input crude oil in device, and the seawater in the while eduction gear, by the isolated condition between oil removal system assurance seawater and the crude oil, after treating to fill crude oil in the device, crude oil is extracted out from flowline by water surface Fuel Tanking Unit shuttle tanker.
A kind of Fuel Tanking Unit that is applicable to the deep-sea hyperbaric environment that the present invention is designed, by the whole heavy two aspect innovative designs that are provided with the oil removal system in oil storage, the device of passing through are installed certainly, the crude oil that has overcome deep-sea Fuel Tanking Unit undercapacity and produced has satisfied the oil storage demand of offshore platform short-term to problems such as salt water contaminations.Fuel Tanking Unit is applied to darker sea situation, has solved the technical barrier of the actual mesopelagic of engineering structure pressure-bearing, a kind of new oil storage production model under water is provided, help the exploratory development of deep-sea oil gas.Oil storage production model under water is that the crude oil that subsea wellheads is produced directly is stored under water in the Fuel Tanking Unit, and small-sized floating mooring gear is established in the producing tract, and the crude oil exporting flexible pipe is received on this mooring gear, and shuttle tanker also rests against this to realize the crude oil transhipment.This isolated oil and water displacement oil storage technology is not under water limited by the depth of water substantially, and cost can not increase sharply rising with the depth of water, is suitable for the deep-sea and uses, and compare with the floating oil storage, Fuel Tanking Unit is subjected to ice power, action of wave force little under water, and structural strength requires low, possesses movably advantage simultaneously.Cost can significantly reduce, and avoids wind sheltering to stop production.The member that is adopted in the invention is standard element, need not special manufacturing, thereby saves engineering cost greatly.The present invention provides a kind of development device and scheme of economic and reliable for the deep-sea oil exploitation.
The Fuel Tanking Unit that is applicable to the deep-sea hyperbaric environment that is provided with in the seabed, deep-sea that the present invention proposes, the preliminary target of its reserves is two ten thousand steres.Carry out oil storage near it is placed on the oil field, in the whole production system, do not need FPSO to participate in, can save the expense of oil production so greatly.In addition, because the reusability and the pattern newly developed of Fuel Tanking Unit, a lot of shallow seas marginal oil field also has development and use value of the present invention.
This Fuel Tanking Unit uses oil film and the oil separating plate in the oil removal system can separate crude oil and seawater.This oil film and oil separating plate can fluctuate, to satisfy the variation of oil mass in the Fuel Tanking Unit.Like this, Fuel Tanking Unit inside can make device proper not need to bear the huge pressure in seabed by water outlet and outside UNICOM, and prevents the pollution to seawater and ocean bottom soil of the crude oil produced, and is safe and practical.
Description of drawings
Fig. 1 cylinder Fuel Tanking Unit unit design figure.
Fig. 2 cylinder Fuel Tanking Unit whole structure figure.
Fig. 3 cylinder Fuel Tanking Unit bottom design sketch.
Look design sketch in Fig. 4 cylinder Fuel Tanking Unit.
Look design sketch in Fig. 5 cylinder Fuel Tanking Unit oil removal system.
Look design sketch in Fig. 6 cylinder Fuel Tanking Unit center buttock.
Fig. 7 cylinder Fuel Tanking Unit center buttock design drawing (device middle part).
Fig. 8 cylinder Fuel Tanking Unit 1-1 section design drawing.
Fig. 9 cylinder Fuel Tanking Unit 2-2 section design drawing.
Figure 10 cylinder Fuel Tanking Unit 3-3 section design drawing.
Figure 11 cylinder Fuel Tanking Unit inner structure scheme drawing.
Figure 12 cylinder Fuel Tanking Unit construction scheme drawing.
Reference numeral: 1, go into oil-piping; 2, flowline; 3, oil separating plate; 4, crude oil; 5, seawater; 6, concrete weight coating piece; 7, oil film; 8, oil removal interlayer; 9, water outlet; 10, oil inlet port; 11, oil outlet; 12, sealing watertight bulkhead; 13, manhole bulkhead; 14, device accessory holder.
The specific embodiment
Design-calculated of the present invention is applicable to the cylinder Fuel Tanking Unit of deep-sea hyperbaric environment, adopts following technical scheme:
1, target working environment: 1000 meters depth of water environment marine sites.
2, Fuel Tanking Unit pattern and type: double-deck (being divided into inner plating and lamina rara externa), the no end, cylinder form steel structure.
The Fuel Tanking Unit size: radius * height=20m * 26m, weld shaped steel on the inner plating of device, lamina rara externa and the sealing watertight bulkhead, inner plating and lamina rara externa spacing are 1m.The Fuel Tanking Unit inner plating is a watertight welding steel structure.
3, oil removal system is provided with explanation: the oil removal system mainly is made up of three kinds of members, oil film, oil separating plate and oil removal interlayer.Oil separating plate is positioned at cylinder Fuel Tanking Unit in-to-in center, and density of material is round panel between seawater and crude oil, and radius is 18m, sees Fig. 5,6 members 3.The oil removal interlayer is positioned at the inner 14m elevation of Fuel Tanking Unit place, effect is to separate upper strata crude oil and lower floor's seawater, and the oil removal interlayer is the layer of metal member, is an annular metal sheet, oil removal interlayer outward flange round edge is welded to connect with device inner plating watertight, sees Fig. 4,5 members 8.Oil film is for connecting the film structural component of oil separating plate and oil removal interlayer, separate upper strata crude oil and bottom seawater, can fluctuate, in the inner oil storage process of device, oil film can connect oil separating plate and float downwards, otherwise, when the outside oil transportation of device, when inner, oil film can connect oil separating plate and upwards float seawater, sees Fig. 5 member 7 by the water outlet access to plant.The use of oil separating plate can reduce the usable floor area of oil film, and then has reduced laid down cost, simultaneously, can well control the motion of oil film, guarantee that oil separating plate and oil film freely fluctuate, prevent the pollution of the crude oil produced seawater and ocean bottom soil.
4, bulkhead and be welded on girder, aggregate layout and size on the steel plate in the cylinder Fuel Tanking Unit:
Be provided with radially the sealing watertight bulkhead with hoop between the doubling plate of Fuel Tanking Unit tween deck, manhole bulkhead radially and steel aggregate radially.Radially steel sealing watertight bulkhead and steel aggregate are by circumferencial direction (hoop) five equilibrium and arrange.8 road radial-sealing watertight bulkheads are set altogether, 3 road hoop sealing watertight bulkheads, 24 roads are the manhole bulkhead radially, and 72 road radial loop are to aggregate, and the steel aggregate all is welded on the inside and outside laminate of cylinder Fuel Tanking Unit.3 road hoop sealing watertight bulkheads are equally spaced along radial direction, are spaced apart 4m between the sealing watertight bulkhead, are annular arrangement by the top projection, and concrete the distribution seen Fig. 8, shown in Figure 9.Radially aggregate is got L shaped steel, calculates according to the requirement in the standard: module of anti-bending section W=288cm
3, moment of inertia I=1324.8cm
4, it is of a size of 160mm * 100mm * 14mm.
Member on the cylinder Fuel Tanking Unit short transverse hoop steel plate is the extension of deck upper member, be provided with 4 road hoop sealing watertight bulkhead and the short transverse steel aggregates that are equally spaced along short transverse between the inside and outside two-layer hoop steel plate, the sealing watertight bulkhead of sizes such as 4 road toroidals is 6m along the spacing of short transverse, the steel aggregate of short transverse is got L shaped steel, calculates according to the requirement in the standard: module of anti-bending section W=288cm
3, moment of inertia I=1324.8cm
4, it is of a size of 160mm * 100mm * 14mm.The thickness of whole apparatus structure inner plating, lamina rara externa is all got 12mm.The oil inlet port and the oil outlet of Fuel Tanking Unit are positioned at the promenade deck, the distribution that is centrosymmetric, and particular location is seen member 10 and member 11 among Fig. 8, Fig. 9.The cylinder oil storage is designed to not have the end, is provided with the base plate annulus.Each scantling of annulus and deck upper member are measure-alike, and the annulus base plate thickness is 12mm.
Fuel Tanking Unit using method of the present invention comprises the following steps:
The first step: by barge with the towage of oil storage equipment to assigned address, finishing device relies on heavy the passing through of vertical subsidence of self gravitation when guaranteeing the Fuel Tanking Unit top, horizontal, according to process shown in Figure 12, after Fuel Tanking Unit is dragged to assigned address by barge, rely on self gravitation to sink to the seabed.
Second step: after Fuel Tanking Unit leans on the gravity of himself to insert the degree of depth certain in the underwater soil, on the accessory holder 14 around the bottom of device, add rectangular body concrete counterweight block structure 6, see Figure 12, after treating that device satisfies the anti-skidding-resistance job requirement of inclining, by going into oil-piping 1 input crude oil 4 in device, and the seawater 5 in the while eduction gear, by the isolated condition between oil removal system assurance seawater and the crude oil, after treating to fill crude oil in the device, by water surface Fuel Tanking Unit, extract crude oil the whole operation process of finishing device from the oil storage to the oil transportation out from flowline 2 as shuttle tanker.
Claims (5)
1. one kind places abyssalbenthic cylinder Fuel Tanking Unit, it is characterized in that, this device is cylinder form steel structure double-deck, the no end, comprises the double-layer circular deck and along the inside and outside two-layer hoop steel plate of short transverse, is provided with the base plate annulus in the bottom of hoop steel plate; Between the inner plating on deck and lamina rara externa, be provided with radially and the sealing watertight bulkhead of hoop, radially manhole bulkhead and steel aggregate radially; Between inside and outside two-layer hoop steel plate, be provided with the steel aggregate of hoop sealing watertight bulkhead and short transverse, on inner plating, lamina rara externa and the sealing watertight bulkhead of hoop steel plate, all be welded with the steel aggregate; The inner plating of deck and hoop steel plate is a watertight welding steel structure; Its oil removal system comprises oil film, oil separating plate and oil removal interlayer, the oil removal interlayer is an annular metal sheet, the inner plating watertight of its outer shroud edge and hoop steel plate is weldingly connected, ring edge is connected with oil film in it, be placed with the oil separating plate of a density of material between seawater and crude oil below the oil removal interlayer, this oil separating plate is circular, its radius is less than the interior ring radius of oil removal interlayer, oil separating plate can freely be fluctuated in the cabin, oil film is used to separate upper strata crude oil and bottom seawater for connecting the film structural component of oil separating plate and oil removal interlayer.
2. Fuel Tanking Unit according to claim 1 is characterized in that the oil inlet port of described Fuel Tanking Unit and oil outlet are positioned on the circular deck, and distribution is centrosymmetric.
3. Fuel Tanking Unit according to claim 1 is characterized in that, the radius * height of described Fuel Tanking Unit=20m * 26m, the radius of oil separating plate are 18m, and the oil removal interlayer is positioned at the inner 14m elevation of Fuel Tanking Unit place.
4. according to claim 1 or 2 or 3 described Fuel Tanking Units, it is characterized in that the thickness of each lamina rara externa, inner plating and base plate annulus is all got 12mm, described steel aggregate is L shaped steel, module of anti-bending section W=288cm
3, moment of inertia I=1324.8cm
4
5. a method of utilizing the described Fuel Tanking Unit of claim 1 to carry out oil storage is characterized in that, comprises the following steps:
The first step: accessory holder is installed in bottom of device;
Second step: by barge with the towage of oil storage equipment to assigned address, finishing device relies on heavy the passing through of vertical subsidence of self gravitation when guaranteeing the Fuel Tanking Unit top, horizontal;
The 3rd step: after Fuel Tanking Unit leans on the gravity of himself to insert in the underwater soil, on the accessory holder around the bottom of device, add rectangular body concrete counterweight block structure;
The 4th step: by going into oil-piping input crude oil in device, and the seawater in the while eduction gear, by the isolated condition between oil removal system assurance seawater and the crude oil, after treating to fill crude oil in the device, crude oil is extracted out from flowline by water surface Fuel Tanking Unit shuttle tanker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103071046A CN101648634B (en) | 2009-09-16 | 2009-09-16 | Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103071046A CN101648634B (en) | 2009-09-16 | 2009-09-16 | Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method |
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| Publication Number | Publication Date |
|---|---|
| CN101648634A CN101648634A (en) | 2010-02-17 |
| CN101648634B true CN101648634B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103071046A Expired - Fee Related CN101648634B (en) | 2009-09-16 | 2009-09-16 | Cylinder oil storage device arranged at the bottom of deep sea, installation thereof and oil storage method |
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| CN101648634A (en) | 2010-02-17 |
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Owner name: WELL-DRILLING TECHNOLOGY INST., SHENGLI PETROLEUM Free format text: FORMER OWNER: TIANJIN UNIVERSITY Effective date: 20110831 Owner name: TIANJIN UNIVERSITY |
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Inventor after: Chu Xinjie Inventor after: Yu Yang Inventor after: Ding Zhongjun Inventor after: Yu Jianxing Inventor after: Yang Shugeng Inventor after: Wang Jidong Inventor after: Zhang Shihua Inventor after: Jiang Yichen Inventor after: Jin Wenchao Inventor after: Xu Songsen Inventor after: Li Sen Inventor before: Yu Jianxing Inventor before: Jin Wenchao Inventor before: Du Zunfeng Inventor before: Gao Xifeng |
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Free format text: CORRECT: INVENTOR; FROM: YU JIANXING JIN WENCHAO DU ZUNFENG GAO XIFENG TO: CHU XINJIE YU JIANXING YANG SHUGENG WANG JIDONG ZHANG SHIHUA JIANG YICHEN JIN WENCHAO XU SONGSEN LI SEN YU YANG DING ZHONGJUN Free format text: CORRECT: ADDRESS; FROM: 300192 NANKAI, TIANJIN TO: 257017 DONGYING, SHANDONG PROVINCE |
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Effective date of registration: 20110831 Address after: 257017 No. 236, North Road, Dongying District, Shandong, Dongying Applicant after: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC Co-applicant after: Tianjin University Address before: 300192 Tianjin City, Nankai District Wei Jin Road No. 72 Applicant before: Tianjin University |
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