CN101665181B - Large-scale oil storage unit applicable to shallow sea area and installation and oil storage methods thereof - Google Patents
Large-scale oil storage unit applicable to shallow sea area and installation and oil storage methods thereof Download PDFInfo
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- CN101665181B CN101665181B CN2009103070838A CN200910307083A CN101665181B CN 101665181 B CN101665181 B CN 101665181B CN 2009103070838 A CN2009103070838 A CN 2009103070838A CN 200910307083 A CN200910307083 A CN 200910307083A CN 101665181 B CN101665181 B CN 101665181B
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Abstract
The invention belongs to the technical field of ocean engineering, in particular to a large-scale oil storage unit applicable to a shallow sea area. The oil storage unit is a cuboid two-layer steel plate steel structure and comprises a deck, a bottom board, a shipboard and a naval ship which are all longitudinal skeleton-type two-layer steel plate components; a closed watertight bulkhead and a man-hole bulkhead are arranged between the inner layer plate and the outer layer plate; the steel stiffeners are welded on the inner layer plate, the outer layer plate and the closed watertight bulkhead; the inner layer plate has a watertight welding steel plate structure; the steel structure is internally provided with two or more cabins which are arranged in a horizontal way; the cabins are communicated one another and separated by struts; and an oil removal system of the steel structure comprises an oil film, an oil separation plate and an oil separation interlayer. The oil storage unit can meet the oil storage requirement of short time of a marine moving platform, and overcomes the sea pollution problem caused by produced crude oil.
Description
Technical field
The invention belongs to field of ocean engineering, be specifically related to a kind of large-scale Fuel Tanking Unit of shallow sea area cuboid form, be applicable to the storage of crude oil in the marginal oil field.
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 that is applicable to the cuboid form in shallow sea area seabed that the objective of the invention is to propose is to satisfy the oil storage demand of marine mobile platform short-term, to overcome the crude oil produced to problems such as salt water contaminations.
For this reason, the present invention adopts following technical scheme:
A kind of large-scale Fuel Tanking Unit that is applicable to shallow sea area, steel structure for rectangular shape, comprise deck, base plate, topside and bow stern, be the double-layer plate member of longitudinal framing, between inner plating and lamina rara externa, be provided with sealing watertight bulkhead and manhole bulkhead, be welded with the steel aggregate on inner plating, lamina rara externa and sealing watertight bulkhead, inner plating is a watertight welding steel structure; In establish and be two or more cabins that in-line is arranged, be interconnected between the cabin, separate with pillar; Its oil removal system comprises oil film, oil separating plate and oil removal interlayer, the oil removal interlayer is a metal sheet, the two or more empty frame that described metal sheet is arranged by yi word pattern and matched with cabin quantity and size constitutes, outer peripheral four limits of interlayer respectively with the inner plating of device topside and bow stern on watertight be weldingly connected, its in-to-in frame is between adjacent cabin, and embed described pillar, the edge of each sky frame that oil removal interlayer inside is surrounded is connected with an oil film respectively, respectively place the oil separating plate of a density of material between seawater and crude oil below the oil removal interlayer in each cabin, the size of this oil separating plate is less than the inside casing of described 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, constitute to be provided with between deck, base plate, topside and the bow stern doubling plate laterally to reach and seal watertight bulkhead, manhole bulkhead longitudinally; The oil inlet port and the oil outlet of described Fuel Tanking Unit are positioned at the promenade deck, and distribution is centrosymmetric; Described Fuel Tanking Unit length=111.4m * 27.4m * 11.4m is divided into three cabins, and each cabin is long to be 36m, wide is 24m, the density of material of each oil separating plate is between seawater and crude oil, and length * wide=34m * 22m, oil removal interlayer are positioned at the inner 5.2m elevation of Fuel Tanking Unit place.The thickness of each lamina rara externa and inner plating is all got 12mm, and described steel aggregate is a 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 above-mentioned 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.
The invention provides a kind of large-scale Fuel Tanking Unit that is applicable to shallow sea area seabed cuboid form, 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, satisfy the oil storage demand of marine mobile platform short-term, overcome the crude oil produced to problems such as salt water contaminations, can avoid shuttle tanker frequently to come and go the increase of the operating charges of bringing, a kind of new oil storage production model under water is provided, has helped the exploratory development of marginal oil field.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.Isolated oil and water displacement used in the present invention oil storage technology is not under water limited by the depth of water substantially, reusable, structural entity intensity height, be suitable for the shallow sea marginal oil field and use, and compare with the floating oil storage, Fuel Tanking Unit is subjected to ice power, action of wave force little under water, structural strength requires low, possess 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 China's shallow sea marginal oil field.
The Fuel Tanking Unit that is applicable to marginal oil field that is provided with in the shallow sea area seabed 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 marginal oil field, in the whole production system, do not need FPSO to participate in, can save the expense of marginal oil field oil production greatly.
This Fuel Tanking Unit adopts the oil removal system, and oil film in the oil removal system and oil separating plate 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 large-scale Fuel Tanking Unit unit design figure of the present invention;
Fig. 2 large-scale Fuel Tanking Unit whole structure figure of the present invention;
Look design sketch in Fig. 3 large-scale Fuel Tanking Unit of the present invention;
Look design sketch in Fig. 4 large-scale Fuel Tanking Unit oil removal of the present invention system;
Design drawing is overlooked on Fig. 5 large-scale Fuel Tanking Unit of the present invention deck;
Fig. 6 large-scale Fuel Tanking Unit 1-1 section bow stern outside plate design drawing of the present invention;
Fig. 7 large-scale Fuel Tanking Unit 2-2 section bow stern inner panel design drawing of the present invention;
Fig. 8 large-scale Fuel Tanking Unit 3-3 section sealing bulkhead design drawing of the present invention;
Fig. 9 large-scale Fuel Tanking Unit 4-4 section manhole bulkhead design drawing of the present invention;
Figure 10 large-scale Fuel Tanking Unit 5-5 section bulkhead design drawing of the present invention (containing pillar);
Figure 11 large-scale Fuel Tanking Unit inner structure scheme drawing of the present invention;
Figure 12 large-scale Fuel Tanking Unit construction scheme drawing of the present invention.
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, pillar; 10, water outlet; 11, oil inlet port; 12, oil outlet; 13, sealing watertight bulkhead; 14, manhole bulkhead; 15, device accessory holder.
The specific embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is further described.
Design-calculated of the present invention is applicable to that the large-scale Fuel Tanking Unit of shallow sea area seabed cuboid form is as follows:
1, target working environment: 40 meters depth of water environments such as subsea.
2, Fuel Tanking Unit pattern and type: double-deck (being divided into inner plating and lamina rara externa), arranged, cuboid form steel structure the end.
Fuel Tanking Unit size: length=111.4m * 27.4m * 11.4m adopts longitudinal framed structure, welds shaped steel on the inner plating of device, lamina rara externa and the sealing watertight bulkhead, and inner plating and lamina rara externa spacing are 1.7m.Establish three cabins (cabin can be 2, four or more) in the device; three cabins are a word along its length and arrange; each cabin cross-sectional plane is an oblong; each cabin is long to be 36m; wide is 24m; be interconnected between the cabin, separate, can allow the crude oil free-flowing with pillar; the design of pillar can be played the tempered oil film effect; if add traditional bulkhead, need to be provided with floor on the bulkhead, film is produced destroy easily; column row serves as bulkhead; both improved structural entity rigidity, and played the tempered oil film effect again, the layout of cabin and pillar is seen Fig. 3, Fig. 4.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 the center in each cabin, is rectangular faceplate, and density of material is between seawater and crude oil, and length * wide=34m * 22m sees Fig. 3,4 members 3.The oil removal interlayer is positioned at the inner 5.2m elevation of Fuel Tanking Unit place, effect is to separate upper strata crude oil and lower floor's seawater, the oil removal interlayer is the layer of metal member, it is one four font metal sheet, four limits of interlayer outward flange are welded to connect with device inner plating watertight, see Fig. 3,4 members 8, inner two the empty edge edge of oil removal interlayer are connected with oil film.Be embedded with the pillar of vertical direction on middle two frames of oil removal interlayer, see Fig. 3,4 members 9.Oil film is for connecting the film structural component of oil separating plate and oil removal interlayer, 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, seawater is by the water outlet access to plant when inner, oil film can connect oil separating plate and upwards float, and sees Fig. 3,4 members 7.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 Fuel Tanking Unit.
Deck in the device is identical with the structure of base plate, is provided with laterally and seals longitudinally watertight bulkhead, manhole bulkhead and steel aggregate between the doubling plate.Spacing between the sealing watertight bulkhead is 6m, and the spacing between the manhole bulkhead is 2m, and steel aggregate spacing is 0.5m, and the steel aggregate all is welded on the inside and outside laminate of sealing watertight bulkhead and device.The thickness of the lamina rara externa on deck is taken as 12mm.The steel 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.
The set-up mode of device topside steel plate upper member and deck upper member is basic identical.Be provided with between the double-layer plate laterally to reach and seal watertight bulkhead, manhole bulkhead and steel aggregate longitudinally.Sealing watertight bulkhead spacing longitudinally is 6m, and the spacing of short transverse is 4m, and the spacing between the manhole bulkhead is 2m, and steel aggregate spacing is 0.5m, and the steel aggregate all is welded on the inside and outside laminate of sealing watertight bulkhead and device.Topside lamina rara externa thickness is taken as 12mm.The steel 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.
Bow stern component form and size are set at side of a ship side member in full accord in the device.Each scantling of base plate and deck upper member are measure-alike in the device, and base plate thickness is 12mm.Whole apparatus structure inner layer steel plate thickness is 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 11 and member 12 among Fig. 5.
Fuel Tanking Unit of the present invention is installed and the oil storage method, comprises the following steps:
(1) 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.
(2) 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 15 around the bottom of device, add rectangular body concrete counterweight block structure 6, see Figure 11, 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 (6)
1. large-scale Fuel Tanking Unit that is applicable to shallow sea area, steel structure for rectangular shape, it is characterized in that, comprise deck, base plate, topside and bow stern, be the double-layer plate member of longitudinal framing, be provided with sealing watertight bulkhead and manhole bulkhead between inner plating and lamina rara externa, be welded with the steel aggregate on inner plating, lamina rara externa and sealing watertight bulkhead, inner plating is a watertight welding steel structure; In establish and be two or more cabins that in-line is arranged, be interconnected between the cabin, separate with pillar; Its oil removal system comprises oil film, oil separating plate and oil removal interlayer, the oil removal interlayer is a metal sheet, the two or more empty frame that described metal sheet is arranged by yi word pattern and matched with cabin quantity and size constitutes, outer peripheral four limits of interlayer respectively with the inner plating of device topside and bow stern on watertight be weldingly connected, its in-to-in frame is between adjacent cabin, and embed described pillar, the edge of each sky frame that oil removal interlayer inside is surrounded is connected with an oil film respectively, respectively place the oil separating plate of a density of material between seawater and crude oil below the oil removal interlayer in each cabin, the size of this oil separating plate is less than the inside casing of described 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, is provided with laterally and seals longitudinally watertight bulkhead, manhole bulkhead between the doubling plate of formation deck, base plate, topside and bow stern.
3. Fuel Tanking Unit according to claim 1 is characterized in that, the oil inlet port and the oil outlet of described Fuel Tanking Unit are positioned at the promenade deck, and distribution is centrosymmetric.
4. Fuel Tanking Unit according to claim 1 is characterized in that described Fuel Tanking Unit is long
Wide
Height=111.4m * 27.4m * 11.4m is divided into three cabins, and each cabin is long to be 36m, and wide is 24m, long
Wide=34m * 22m, the oil removal interlayer is positioned at the inner 5.2m elevation of Fuel Tanking Unit place.
5. Fuel Tanking Unit according to claim 1 is characterized in that the thickness of each lamina rara externa and inner plating is all got 12mm, and described steel aggregate is a 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.
6. an installation and an oil storage method that adopts the described Fuel Tanking Unit of claim 1 to be adopted 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 |
|---|---|---|---|
| CN2009103070838A CN101665181B (en) | 2009-09-16 | 2009-09-16 | Large-scale oil storage unit applicable to shallow sea area and installation and oil storage methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103070838A CN101665181B (en) | 2009-09-16 | 2009-09-16 | Large-scale oil storage unit applicable to shallow sea area and installation and oil storage methods thereof |
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| Publication Number | Publication Date |
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| CN101665181A CN101665181A (en) | 2010-03-10 |
| CN101665181B true CN101665181B (en) | 2011-03-16 |
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| CN2009103070838A Expired - Fee Related CN101665181B (en) | 2009-09-16 | 2009-09-16 | Large-scale oil storage unit applicable to shallow sea area and installation and oil storage methods thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010615B (en) * | 2012-12-26 | 2014-12-17 | 中国海洋石油总公司 | Water oil storage device with mooring function and assembly method thereof |
| CN106005794B (en) * | 2016-05-24 | 2019-02-01 | 上海外高桥造船有限公司 | Oil cargo tank for floating storage vessel unit |
| CN107941538B (en) * | 2017-10-27 | 2019-11-01 | 天津大学 | A kind of submerged pipeline laying installation analog detection method |
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Owner name: WELL-DRILLING TECHNOLOGY INST., SHENGLI PETROLEUM Free format text: FORMER OWNER: TIANJIN UNIVERSITY Effective date: 20111020 Owner name: TIANJIN UNIVERSITY |
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Inventor after: Xu Songsen Inventor after: Yu Yang Inventor after: Guo Qiang Inventor after: Yang Shugeng Inventor after: Yu Jianxing Inventor after: Zhang Shihua Inventor after: Zhao Yimin Inventor after: Jin Wenchao Inventor after: Jiang Yichen Inventor after: Wang Jidong Inventor after: Chu Xinjie Inventor before: Jin Wenchao Inventor before: Yu Jianxing Inventor before: Yu Yang Inventor before: Zhou Qingji |
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Free format text: CORRECT: INVENTOR; FROM: JIN WENCHAO YU JIANXING YU YANG ZHOU QINGJI TO: XU SONGSEN YANG SHUGENG YUJIANXING ZHANG SHIHUA ZHAO YIMIN JIN WENCHAO JIANG YICHEN WANG JIDONG CHU XINJIE YU YANG GUO QIANG Free format text: CORRECT: ADDRESS; FROM: 300192 NANKAI, TIANJIN TO: 257017 DONGYING, SHANDONG PROVINCE |
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Effective date of registration: 20111020 Address after: 257017 No. 236, North Road, Dongying District, Shandong, Dongying Co-patentee after: Tianjin University Patentee after: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC Address before: 300192 Tianjin City, Nankai District Wei Jin Road No. 72 Patentee before: Tianjin University |
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