CN1646362A - Floating semi-submersible oil production and storage arrangement - Google Patents
Floating semi-submersible oil production and storage arrangement Download PDFInfo
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- CN1646362A CN1646362A CNA038082829A CN03808282A CN1646362A CN 1646362 A CN1646362 A CN 1646362A CN A038082829 A CNA038082829 A CN A038082829A CN 03808282 A CN03808282 A CN 03808282A CN 1646362 A CN1646362 A CN 1646362A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
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Abstract
An arrangement for the storage of marketable quantities of crude oil at a semi-submersible floating production vessel. The storage is achieved by hanging a segmented reinforced concrete tank (2) to the underside of the semi-submersible vessel. The semi-submersible vessel can be an existing semi-submersible drilling rig. By maintaining the mass of the tank and contents slightly greater than the displacement of the tank and by arranging the centre of gravity of the tank below its centre of buoyancy, the metacentric height of the semi-submersible vessel is approved. The storage arrangement for the oil provides the necessary maintenance of mass by either storing approximately 4/5 of the oil in oil-over-water chambers and approximately 1/5 in gas-over-oil chambers or by using a gas-over-oil-over-water arrangement in all the chambers. The piping arrangements minimize the free surface of liquids in the tank. The design ensures the internal pressure in the tank can be less than the external pressure which minimizes required reinforcement. The design provides a net positive suction head to oil export pumps located above the storage tank in a location which allows easy maintenance. The design allows all pumps, valves and instrumentation necessary for handling ballast water to be maintained within the hull of the semi-submersible where they can be easily maintained. The design allows all the valves, pumps and instrumentation necessary for handling oil to be in locations where they can be easily maintained.
Description
Background technology
Oil industry often adopts to float and produces and memory system, to develop remote small oil field.These normally utilize the crude oil tanker of the repacking of the mooring buoy that is tied to special construction.In order to minimize wave, trend and the wind-force that acts on the oil tanker, this mooring is designed to allow oil tanker to swing with the wind around floating drum under the influence of synthetic environmental forces.Treatment facility is installed on the deck of drilling platform.
, undertaken by one or more subsea wellheads from the crude oil production of reservoir by the flexible flowline road from each well head to mooring buoy and from the floating drum to the drilling platform.This system also is equipped with pipeline, so that gas and/or water are sent to well head from oil tanker.But also fluid power pipeline and electric power circuit from drilling platform are installed, to allow the control subsea wellheads.Rotate because drilling platform must freely center on floating drum, therefore the many fluid flow passages by floating drum cause the complicated and expensive device that is called swivel of needs.This device is the accurate design-calculated equipment that stands from reservoir high pressure, high temperature corrosion fluid, therefore if avoid the high maintenance cost must make zero defect.
Adopting the further shortcoming of the unsteady generation system of oil tanker is the influence that oil tanker is subject to pitching, rolling and hangs down and swing.Because implement by the gravity separation in the big press drill platform shaft from the gentle separation of the oil that comprises flow of liquid, the water of reservoir, so the kinetic liquid sloshing of steamer can cause separating treatment and seriously influences.
A kind of unsteady production system of type of selecting of eliminating these problems is to use semi-immersed drilling platform.Semi-immersed drilling platform has been used for many years as removable drilling vessel, crane barge, pipelaying vessel and special unsteady production drilling platform industry at sea.As shown in fig. 1, semi-immersed drilling platform comprises deck 1, and the deck is supported on a plurality of columns on floating line (OWL).Column reaches two unsteady buoyancy tanks 31 that (usually) is positioned at certain distance under the floating line from the deck.With respect to steamer shape drilling platform, the advantage of semi-immersed drilling platform is following 2 points.At first, semi-immersed drilling platform is exposed at the area of the wave of floating line this area less than steamer shape drilling platform, has therefore reduced the application force of horizontal wave.Secondly and since the buoyancy tank that buoyancy is provided than the downside of steamer further under floating line, so vertical is very little.(this be since during along with the more depths that moves to water the influence of wave reduce rapidly.)
The result of these advantages be semi-immersed production with drilling platform can be in the ocean mooring and do not need to provide weather cock and reduced the rocking of the liquid in the drilling platform to the deck.
Yet can the unsteady production system (SSFP system) of half submergence have two shortcomings.At first, the ability that does not have the crude oil of a considerable amount of storages productions.This means they only can be used in be provided with pipeline with the Crude Oil Transportation that will produce ashore the local or contiguous SSFP drilling platform of stores/processes equipment the place of special mooring oil tanker is provided.
Second shortcoming is that the limited amount of treatment facility above deck can be installed, because the center of gravity of SSFP drilling platform raises owing to weight is added to the deck.This has reduced the opposing of toppling for drilling platform.This quantitative with the characteristic of the drill outfit that is called metacentric height (being typically expressed as GM) for the opposing of toppling.Higher GM means for the height opposing of toppling.
Many oil fields have utilized the SSFP drilling platform to develop, and wherein the SSFP drilling platform has utilized the semi-immersed drilling ship of using of conversion.If the crude oil of producing is viscosity and big pressure container that need be used to separate or gas injection or water injection equipment if desired, then need new bigger semi-immersed drilling platform to hold this equipment.
Many trials have been carried out, to be provided at the crude oil storage (for example, UK Patent Application GB22116849, GB2207892, GB2188291) in the semi-immersed drilling platform.Yet these attempt only allowing storage crude oil relatively in a small amount.These systems still need the oil tanker of dedicated moored, are suitable for the crude oil of sales volume with storage.Be arranged on the storage that the storage in the semi-immersed drilling platform only provided produce in several days, navigate by water near refinery with unloading to allow the storage oil tanker.
Summary of the invention
According to an aspect of the present invention, a kind of oily memory module that semi-immersed oil is produced drilling platform that is used for is provided, describedly be used for semi-immersed oil and produce the oily memory module of drilling platform and comprise that deck construction, at least two are used for providing the buoyancy tank under water of buoyancy and a plurality of columns that described deck are connected to described buoyancy tank to described deck construction, it is characterized in that, concrete box is connected under the described buoyancy tank, and described concrete box is divided into a plurality of chambers that are used for storing fluid again.
The advantage that is used to store the layout of oil according to the present invention is that it provides the system that is used to store big gauging, this storage content is not subject to the influence of extreme environmental conditions, do not reduce, and in fact it can be configured to increase the antidumping power of the driling rig that therewith uses, and safeguards in situ easily.
More particularly, the present invention preferably provide a kind of be used to develop offshore oil and nature-gas field can half submergence, float production, storage and uninstalling system, described system comprises drilling ship, be connected to the drilling ship bottom according to oily memory module of the present invention, the ballasting water pump that is used to utilize drilling ship to be to increase water or to be directed to the top of each chamber or to guide from the top of each chamber from the device of the bottom discharge water of each chamber of concrete box and the oil that will produce.
The present invention also provides the method for storage oil in a kind of oily production facility that floats at sea, described method comprises the steps: that the concrete box that will be divided into a plurality of chambers is connected to the bottom of floating box structure, described chamber is filled at least a fluid to regulate the buoyancy of described production facility, and by in a controlled manner the oil pump of producing being gone in the described chamber described fluid is discharged from described chamber, thereby the maintenance of the quality of concrete box and its contents is constant substantially.
Optimal way is, described concrete box is divided into many chambers, particularly separates by the dividing plate of a plurality of fluid-tight, and at least one in the described chamber is positioned at the center of concrete box and substantially at top and bottom opening, thereby through hole is provided in concrete box.Driling rig can carry out drilling well or workover operations with appended concrete box by this way.
Optimal way is that each chamber of concrete box always remains full of at least a fluid, thereby controls the ballace of this layout.The fluid of Shi Yonging can for example be a seawater by this way, natural fuels or the two or more compound in these.
Preferably, at least some in the chamber comprise substantially at first inlet/outlet pipe of cavity bottom termination and the second inlet/outlet pipe that stops in chamber roof substantially.Particularly, at least some in the preferred chamber comprise water inlet/outlet pipe and oil-in/outlet pipe.Each of this chamber is partially filled at least water before beginning oil is produced, thereby water is discharged from chamber by water pipe when oil adds chamber by oil pipe.By this way, can be discharged to the oil tanker that for example is used to be transported to seashore from concrete box by the oil drainage that utilizes the water that injects by water pipe.Water pipe preferably stops near the bottom of chamber, because seawater is usually than oil density height, and water pipe preferably has diffuser tube in its end, thus the mixing of minimum oil and water when in the water suction chamber.Oil pipe preferably stops at the inside face of the upper surface of chamber, and the advantage of this layout is it avoids forming bubble in concrete box a possibility.
Have been found that, when producing oil or unload oil, if more than first chamber operated this oil storage arrangement on water, and more than second chamber operate in the mode that oil, natural fuels or its compound are stored in wherein, is particularly conducive to keep the quality of concrete box and contents constant substantially.Particularly, in more than second chamber each preferably is provided with first pipe that stops near cavity bottom and second pipe that stops near chamber roof, wherein when producing oil by described first pipe with in the oily suction chamber, simultaneously will be the gas in chamber discharge by second pipe.Optimal way is, described more than second chamber arrange in the install in series mode, and each second pipe extends to the bottom of next chamber with series system near the top of a chamber, thereby is formed for first pipe of described next chamber.The advantage of this layout is that series connected chamber fills or move sky successively rather than simultaneously, and promptly in case first chamber in the series connection is filled, it just spills in second chamber.As a result, at any time, in only described more than second chamber one comprise oil gentle compound---remaining is filled with gas or oil, reduced the interior free fluid surface of this layout thus.
Optimal way is, more than first chamber constitute chamber substantially 80% and more than second chamber constitute chamber substantially 20%, thereby oil is supplied to or discharges from described first chamber and second chamber simultaneously, optimal way is, flow substantially 80% be directed to described more than first chamber and flow substantially 20% be directed to described more than second chamber.Since the density of crude oil be substantially seawater density 80%, therefore the advantage of this layout is to keep constant quality in the concrete box when being loaded with or unloading is oily from this layout, and minimizing the Free Surface of the fluid in the chamber simultaneously, this is of value to the stability of this layout.
In selectable embodiment, except the described first and second inlet/outlet pipes, each chamber also comprises the 3rd inlet/outlet pipe, and the 3rd inlet/outlet pipe stops along the distance of the downward partial distance of chamber at the top of the height of distance chamber 20% chamber substantially.In this embodiment, first pipe is provided with the inlet/outlet that is used for seawater, and second pipe is provided with the inlet/outlet that is used for gas and the 3rd pipe is provided with the inlet that is used for oil/locate mouth, and all chambers of this layout are equipped with identical pipe arrangement and are supplied with simultaneously.What this moment, water was gentle is mixed for each chamber of ballast, when not having oil each chamber 80% fill water and gas thereon, when oil adds/volume change of gas when therefrom discharging in each chamber, thereby guarantee that when oily suction volume by oily drain water only is 80% of an oily volume.By this way, the whole quality of this layout is held constant.
Description of drawings
By example some embodiments of the present invention are described below with reference to accompanying drawings, wherein:
Fig. 1 shows the semi-immersed unsteady production system of representative type;
Fig. 2 shows the semi-immersed driling rig that is connected with concrete box according to of the present invention with transparent view;
Fig. 3 shows the cutaway view of the driling rig among Fig. 2;
Fig. 4 is that bonded assembly is arranged scheme drawing between the chamber of the concrete box in Fig. 2 and 3;
Fig. 5 and 6 is how further scheme drawings of bonded assembly of diagram chamber;
Fig. 7 shows the other details of the driling rig in Fig. 2 and 3; And
Fig. 8 shows as the gas/oil of selecting/water load/unload and arranges.
The specific embodiment
See also Fig. 2, driling rig 1 has the concrete box 2 that is connected under column 30 and the buoyancy tank 31.
As shown in Figure 3, concrete box is separated by the fluid-tight next door of the form of inner concrete wall 3.In the heart at least one unit structure is at top and bottom opening in concrete box, and to produce the hole by the concrete box center, driling rig can be drilled or workover operations being connected with under the situation of casing thus.
Fig. 3 and 5 also shows the water inlet/outlet pipe 4 and the oil-in/outlet pipe 5 of a chamber.Water pipe stops near the diffuser pipe 6 of cavity bottom, the mixing of diffuser pipe 6 minimum oil and water when suction water.Oil pipe stops at the inner face of upper surface, with the possibility of avoiding bubble to form.In order to keep the constant mass of concrete box and contents when producing oil or unload oil, only 4/5 of chamber carries out the operation of principle on the water of the oil shown in Fig. 3.
Fig. 5 shows by guarantee the static pipe arrangement of guaranteeing the fore-and-aft stability of concrete box of the stable maintenance of barycenter during the load/unload of the chamber on the water is handled at oil.Chamber remaining 1/5 utilizes the scheme of gas on oil of pipeline as shown in Figure 6 that adopt.Oil enters the first chamber A by oil pipe 9.When chamber A was oil-filled, natural fuels was transported to chamber B by managing 10.When chamber A is full of, oil will flow to chamber B by managing 10 then, make gas move into cavity C by line again, and so be full of oil and gas is discharged from final gas outlet tube 11 up to all chambers.This process is carried out when 4/5 of oil just is being directed to the chamber of oil on water.Because the density of crude oil is approximately 4/5 of seawater, therefore this layout has kept the constant-quality in the concrete box when load or unload.These arrangement minimizes the Free Surface of the liquid in the chamber, this is of value to the stability of marine drilling equipment.Fig. 4 shows the example layout that is used for chamber, wherein move chamber that gas moves water scheme on oil along the center arrangement of concrete box with straight line at the chamber of scheme on the oil in any side symmetric arrangement, to guarantee the lateral stability during load/unload is handled.
Fig. 8 shows the layout of the conduct selection that realizes this balancing of mass.In this arrangement, loading system is identical for described chamber.Seawater inlet/outlet pipe is arranged on the bottom of chamber, oil-in/outlet pipe be arranged on chamber height 4/5 and the gas inlet pipe is arranged in the upper surface of chamber.When wherein not having oil, 4/5 of each chamber be full of seawater and natural fuels thereon.When producing oil, oil enters by oil pipe 26 and seawater is discharged by water pipe 25.Simultaneously, natural fuels discharges by gas inlet/outlet pipe 27, with guarantee volume by oily drain water only be the oil that enters volume 4/5.
The quality that feature of the present invention also is concrete box and contents is slightly greater than the buoyancy of concrete box.This means the identical draft that the semi-immersed drilling platform/tank structure that merges will be taken to semi-immersed drilling platform operation under the merging phase not, some ballast waters must be discharged from semi-immersed drilling platform, thereby cause the metacentric height of the drilling platform that further improvement merges.This being arranged between concrete box and the driling rig produces tension force.
Further feature of the present invention is can change into pressure by this tension force of gap between the upper surface of the downside of eliminating semi-immersed buoyancy tank and concrete box, and this pressure is of value to the fatigue life of drilling platform.
By by the bottom of density greater than the material constructional concrete case of the top density of concrete box, the center of gravity of concrete box and contents is lower than the center of the buoyancy of concrete box slightly.This has increased the metacentric height of marine drilling equipment, thereby allows the clean deck that is increased to semi-immersed drilling platform of carrying of increase.
The volume of concrete box is fully big, is empty thereby work as concrete box, and when drill outfit was attached to it, the upper surface of concrete box is cooresponding distance on floating line.Therefore, each chamber is blanketing gas at least in part, air for example, thus reduce the total mass of the concrete box that comprises its contents and reduce its draft thus, so that safeguard.This allows near the junction of pipeline, the manhole that is used for the concrete box of internal check, concrete box and semi-immersed drilling platform on the last concrete box surface and all external components of semi-immersed drilling platform.This inspection that allows classification society to need needn't run at drilling platform under the situation of dry dock to be carried out.The part of the drilling platform that can not check at dry dock only is the downside and the lower wall of cement concrete casing.Because the cement concrete casing is made of cement concrete, be considered to enough by the regular sight control of operator.
When bearing compressive load as concrete performance the best of structural materials.Tension force must be by embedding the steel bars in concrete opposing.The reinforcing bar amount that needs minimizes greater than internal pressure by the external pressure that keeps acting on the concrete box.In order to realize this purpose, from the water outlet pipe wire joint of the chamber of each oil on water break tank 12 to the column that is positioned at the semi-immersed marine drilling equipment shown in Fig. 7.This break tank is positioned under the height of operation floating line (OWL).This break tank lead in atmosphere 13 and the break tank water level by the water level switch 14 on the seawater ballast water pump 16 that acts on semi-immersed marine drilling platform and 15 and control cock 17 keep, to add water and draining as required.Can not the overvoltage concrete box in order to ensure oil system, oil-in/outlet is connected to atmosphere at perch 18.
The oil that needs big centrifugal pump 19 to store is unloaded to shuttle tanker.This pump need be at the net positive suction head (NPSH) of suction side, so that operation effectively.Usually this realizes by pump being positioned at the height lower than the bottom of storage box.Layout of the present invention allow pump to be located to be connected to can be easily by the dismounting of boring tower hoisting crane so that safeguard but still be provided with on the concrete box top in the latent case of one Wu Zha in the semi-immersed column of net positive suction head.
All essential valves, pump and the instrument that feature of the present invention also is to be used for saltwater system can be positioned at the column of semi-immersed marine drilling equipment, and they are in drying, good environment and can be easily approaching herein, so that safeguard.
The present invention does not need the pipeline or the equipment that stretch out from the bottom of concrete box.This allows concrete box to build easily on the bank, slips in the ocean, sets concrete box on suitable seabed, to be coupled to semi-immersed drilling platform.
Even feature of the present invention also be between concrete box and the semi-immersed driling rig be connected that operating period is arranged under water but can be in this connection of environment structure of drying.In case structure, concrete box will be set on the seabed, and several meters water thereon.The semi-immersed marine drilling equipment that is in the least draft degree of depth will float on the concrete box and downward deballast to the top of concrete box.Concrete box is deballast then, to be enough to rise the semi-immersed marine drilling equipment that does not have water, builds to allow forever to be connected dry place.
It will be appreciated, of course, that 80% the proportionate relationship of using above to the relative density of seawater, so only be approximate value with crude oil.In addition, not under the liquid of oil and/or the water situation about being used in this arrangement utilizing, the relative density of the liquid that the relative shift of more than first and second chamber and/or relative number will use according to reality.
Claims (31)
1. one kind is used for the oily memory module that semi-immersed oil is produced drilling platform, comprise that deck construction, at least two are used for providing the buoyancy tank under water of buoyancy and a plurality of columns that described deck are connected to described buoyancy tank to described deck construction, it is characterized in that, concrete box is connected under the described buoyancy tank, and described concrete box is subdivided into a plurality of chambers that are used for storing fluid.
2. oily memory module according to claim 1, wherein said concrete box is subdivided into a plurality of vertical chambers, described vertical chamber forms the array that passes described concrete box, in the described chamber at least one is at top and bottom opening, thereby through hole is provided in concrete box, carries out oily production operation by this through hole.
3. oily memory module according to claim 2, wherein said concrete box is divided by a plurality of fluid-tight next door again.
4. according to each described oily memory module in the claim 1 to 3, at least some chambers in the chamber of wherein said concrete box comprise the first inlet/outlet pipeline that nestles up cavity bottom and are positioned at the second inlet/outlet pipeline on the top 20% of chamber substantially.
5. oily memory module according to claim 4, more than first chamber in wherein said at least some chambers arranged in the mode of install in series, and the second inlet/outlet plumbing connection of a chamber of described a plurality of chambers is to the first inlet/outlet pipeline of the next chamber of described install in series.
6. oily memory module according to claim 5, wherein the first inlet/outlet plumbing connection of first chamber of install in series is to oil pipe, and the second inlet/outlet plumbing connection of last chamber of install in series is to tracheae.
7. according to each the described oily memory module in the claim 4 to 6, wherein more than second described chamber has their first inlet/outlet pipeline that is connected to fluid supply tube and their the second inlet/outlet pipeline that is connected to oil pipe, and the scheme of fluid utilization oil on suitable fluid is stored in described more than second chamber.
8. oily memory module according to claim 7, the part that wherein forms described at least some chambers of described more than second chamber equals the density of oil and the ratio of fluid density substantially, oil is stored on described fluid in described more than second chamber, and the part that forms described at least some chambers of described more than first chamber equals 1 substantially and deducts the ratio that forms described more than second chamber.
9. according to claim 7 or 8 described oily memory modules, wherein oil is stored on the water in described more than second chamber, and 20% and described more than second chamber that described more than first chamber constitutes described at least some chambers constitute 80% of described at least some chambers.
10. according to each the described oily memory module in the claim 4 to 9, the wherein said second inlet/outlet pipeline is positioned at the top of each described chamber substantially.
11. oily memory module according to claim 4, the described second inlet/outlet pipeline is positioned at the position that equals chamber height 1/5th apart from the distance of chamber roof substantially.
12. oily memory module according to claim 11, each in wherein said at least some chambers comprise the 3rd inlet/outlet pipeline that is positioned at chamber roof substantially.
13. oily memory module according to claim 12, the wherein said first inlet/outlet plumbing connection be to water pipe, the described second inlet/outlet plumbing connection to oil pipe and described the 3rd inlet/outlet plumbing connection to tracheae.
14. according to each the described oily memory module in the claim 4 to 13, the wherein said first inlet/outlet pipeline has the diffuser assembly that is arranged on its end, to minimize the mixing of the fluid in each chamber.
15. according to each the described oily memory module in the aforesaid right requirement, wherein concrete box is by the material structure of different densities, thereby the center of gravity of concrete box and its contents always is lower than the center of its buoyancy, and the metacentric height of this oil memory module is increased.
16. according to each the described oily memory module in the aforesaid right requirement, wherein the volume of concrete box is: when it when being empty to small part, its buoyancy is enough to that oil is produced drilling platform and remains on such height with respect to the water surface, promptly this height concrete box upper surface on floating line.
17. according to each the described oily memory module in the aforesaid right requirement, also comprise the break tank that is communicated with atmosphere, described break tank is positioned at the height under the operation floating line in the inside of described drilling platform, the internal pressure in the concrete box remains by break tank and is lower than external pressure.
18. oily memory module according to claim 17, one of them break tank is positioned at the inside of the column of described drilling platform.
19. according to claim 17 or 18 described oily memory modules, wherein the fluid level in the break tank can be by the control of fluid level controller, described fluid level controller actuating seawater ballasting water pump adds from the ocean to allow seawater with discharge water and actuation control valve.
20. each the described oily memory module in requiring according to aforesaid right wherein provides pump, so that oil is discharged to oil tanker, described pump is arranged in of described column on the described concrete box height.
21. according to each the described oily memory module in the aforesaid right requirement, wherein said concrete box is by ferro-concrete and/or prestressed concrete structure.
22. one kind be used to develop offshore oil and nature-gas field can half submergence, float production, storage and uninstalling system, the ballasting water pump that comprise drilling ship, be connected to each described oily memory module in the requiring according to aforesaid right of drilling ship bottom, is used to utilize drilling ship is with to increasing water or being directed to the top of each chamber or the device that guides from the top of each chamber from the device of the bottom discharge water of each chamber of concrete box and the oil that is used for producing.
23. the oily method of storage in the oily production facility that at sea floats, the concrete box that comprises the steps: to be divided into again a plurality of chambers is connected to the bottom of floating box structure, with the described chamber of at least a fluid filled to regulate the buoyancy of described production facility, and by in the described chamber of oily suction that will produce in a controlled manner and described fluid is discharged from described chamber, constant substantially thereby the quality of concrete box and its contents keeps.
24. method according to claim 23, also comprise the steps: by more than first described chambers being filled first fluids and more than second described chambers being filled the buoyancy of the described equipment of second fluid regulation, thereby described more than first chamber of the oily suction of the first ratiometric production therefrom discharged described first fluid, and thereby described more than second chamber of the oily suction of the described production of second ratiometric therefrom discharged described second fluid, described first and described second ratio constant substantially based on the quality that the relative density of the oil of producing and the described first fluid and second fluid calculates to keep the fluid in the described concrete box.
25. method according to claim 24, thereby also comprise the steps: to move the described first ratiometric oil of empty oil from described concrete box and discharge and the described second ratiometric oil is discharged from described more than second chamber from described more than first chamber by with relative quantity described first fluid being drawn back in described more than first chamber and described second fluid being drawn back in described more than second chamber, wherein the quality of concrete box and its contents keeps constant substantially during the oil unloading of producing.
26. according to claim 24 or 25 described methods, wherein said first fluid is a water and described second fluid is a gas, described more than first chamber constitute substantially the concrete box volume 80% and hold substantially production oil 80%, and described more than second chamber constitute substantially the concrete box volume 20% and hold substantially production oil 20%.
27. according to each the described method in the claim 24 to 26, also comprise the steps: to connect described more than second chamber, thereby the fluid of discharging from a chamber enters the series connected next chamber with series system.
28. method according to claim 23, also comprising the steps: provides water inlet/outlet conduit in the bottom of each chamber substantially, provide gas access/outlet conduit at the top of each chamber substantially, and 1/5 place for chamber height provides oil-in/outlet conduit at the described top of distance substantially, each chamber of described concrete box is filled the buoyancy of the gentle compound of water with conditioning equipment, it is gentle to discharge described water to be extracted in each chamber to the oil that will produce by described oil pipe, thereby keep each chamber to be full of fluid and minimize wherein free fluid surface thus, and control is constant substantially with the total mass that keeps concrete box and its contents from the gentle relative scale of described chamber drain water by described oil.
29. method according to claim 28 wherein by drawing back in each chamber from concrete box unloading oil water is gentle with relative scale, thereby keeps the total mass of concrete box and its contents constant substantially.
30. according to claim 28 or 29 described methods, wherein said water and described gas from each chamber discharge and/or each chamber of suction described ratio be 80% water and 20% gas.
31., thereby also comprise the steps: at least in part each chamber blanketing gas of described concrete box is reduced the total mass of the described concrete box that comprises its contents and reduces its draft thus so that safeguard according to each the described method in the claim 23 to 30.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0203997.2 | 2002-02-20 | ||
| GB0203997A GB0203997D0 (en) | 2002-02-20 | 2002-02-20 | Floating semi-submersible oil production and storage arrangement |
| GB0210978A GB0210978D0 (en) | 2002-05-14 | 2002-05-14 | Floating semi-submersible oil production and storage arrangement |
| GB0210978.3 | 2002-05-14 | ||
| GB0214699.1 | 2002-06-26 | ||
| GB0214699A GB0214699D0 (en) | 2002-06-26 | 2002-06-26 | Floating semi-submersible oil production & storage arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1646362A true CN1646362A (en) | 2005-07-27 |
Family
ID=27256381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA038082829A Pending CN1646362A (en) | 2002-02-20 | 2003-02-11 | Floating semi-submersible oil production and storage arrangement |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20050163572A1 (en) |
| EP (1) | EP1476351A1 (en) |
| CN (1) | CN1646362A (en) |
| AU (1) | AU2003208405A1 (en) |
| BR (1) | BR0307983A (en) |
| GB (1) | GB2385564B (en) |
| MA (1) | MA26406A1 (en) |
| NO (1) | NO20043560L (en) |
| NZ (1) | NZ534878A (en) |
| TN (1) | TNSN04157A1 (en) |
| WO (1) | WO2003070562A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009117901A1 (en) * | 2008-03-26 | 2009-10-01 | Wu Zhirong | Liquid storing and offloading device and drilling and production installations on the sea based thereon |
| CN102137788A (en) * | 2008-08-29 | 2011-07-27 | 霍顿维森深水公司 | Floating oil storage system and method |
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| CN102358403A (en) * | 2011-08-18 | 2012-02-22 | 烟台中集来福士海洋工程有限公司 | Semi-submerged platform and anti-overturning system for same |
| CN103466052A (en) * | 2013-09-12 | 2013-12-25 | 中国船舶重工集团公司第七○二研究所 | Integral-floating-box-type semi-submersible platform |
| WO2014047926A1 (en) * | 2012-09-29 | 2014-04-03 | Wu Zhirong | Offshore liquid depot |
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| GB2507370B (en) * | 2013-05-15 | 2014-10-15 | Atkins Ltd | Compact floating production, storage and offloading facility |
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| US4168673A (en) * | 1976-01-26 | 1979-09-25 | Preussag Aktiengessellschaft | Floating island for extracting or processing gas |
| US4059065A (en) * | 1977-02-07 | 1977-11-22 | Mobil Oil Corporation | Semisubmersible loading mooring and storage facility |
| NO773076L (en) * | 1977-09-06 | 1979-03-07 | Moss Rosenberg Verft As | FLOATING SYSTEMS FOR OFF-SHORE FLOATING, INTERMEDIATE STORAGE AND LOADING OF LNG |
| NO165631B (en) | 1985-07-03 | 1990-12-03 | Aker Eng As | DEVICE FOR HALF SUBMITTABLE PLATFORM CONSTRUCTION. |
| SE458519B (en) | 1987-08-12 | 1989-04-10 | Goetaverken Arendal Ab | FORCE STRENGTH OF SHIPPING FOR OFF-SHORE WORK |
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| CA2089509A1 (en) * | 1993-02-15 | 1994-08-16 | William A. Scott | Ice crush resistant caisson for arctic offshore oil well drilling |
| GB9401141D0 (en) * | 1994-01-21 | 1994-03-16 | Kvaerner Earl & Wright | Buoyant platform |
| US5899637A (en) * | 1996-12-11 | 1999-05-04 | American Oilfield Divers, Inc. | Offshore production and storage facility and method of installing the same |
-
2003
- 2003-02-11 EP EP03706693A patent/EP1476351A1/en not_active Withdrawn
- 2003-02-11 AU AU2003208405A patent/AU2003208405A1/en not_active Abandoned
- 2003-02-11 CN CNA038082829A patent/CN1646362A/en active Pending
- 2003-02-11 WO PCT/GB2003/000585 patent/WO2003070562A1/en not_active Application Discontinuation
- 2003-02-11 GB GB0303109A patent/GB2385564B/en not_active Expired - Fee Related
- 2003-02-11 BR BR0307983-0A patent/BR0307983A/en not_active Application Discontinuation
- 2003-02-11 US US10/505,139 patent/US20050163572A1/en not_active Abandoned
- 2003-02-11 NZ NZ534878A patent/NZ534878A/en unknown
-
2004
- 2004-08-18 TN TNP2004000157A patent/TNSN04157A1/en unknown
- 2004-08-26 NO NO20043560A patent/NO20043560L/en not_active Application Discontinuation
- 2004-09-16 MA MA27862A patent/MA26406A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101421151B (en) * | 2006-04-17 | 2012-02-08 | 巴西石油公司 | Mono-column FPSO |
| WO2009117901A1 (en) * | 2008-03-26 | 2009-10-01 | Wu Zhirong | Liquid storing and offloading device and drilling and production installations on the sea based thereon |
| GB2470887A (en) * | 2008-03-26 | 2010-12-08 | Zhirong Wu | Liquid storing and offloading device and drilling and production installations on the sea based thereon |
| CN101980917A (en) * | 2008-03-26 | 2011-02-23 | 吴植融 | Liquid storing and offloading device and drilling and production installations on the sea based thereon |
| GB2470887B (en) * | 2008-03-26 | 2012-09-05 | Zhirong Wu | A liquid storage, loading and offloading system and its applications for offshore drilling and production facilities |
| US8292546B2 (en) | 2008-03-26 | 2012-10-23 | Zhirong Wu | Liquid storage, loading and offloading system |
| CN101980917B (en) * | 2008-03-26 | 2014-03-12 | 吴植融 | Liquid storing and offloading device and drilling and production installations on sea based thereon |
| CN102137788A (en) * | 2008-08-29 | 2011-07-27 | 霍顿维森深水公司 | Floating oil storage system and method |
| CN102358403A (en) * | 2011-08-18 | 2012-02-22 | 烟台中集来福士海洋工程有限公司 | Semi-submerged platform and anti-overturning system for same |
| CN102358403B (en) * | 2011-08-18 | 2015-12-09 | 烟台中集来福士海洋工程有限公司 | For anti-system and the semi-submerged platform of toppling of semi-submerged platform |
| WO2014047926A1 (en) * | 2012-09-29 | 2014-04-03 | Wu Zhirong | Offshore liquid depot |
| CN103466052A (en) * | 2013-09-12 | 2013-12-25 | 中国船舶重工集团公司第七○二研究所 | Integral-floating-box-type semi-submersible platform |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1476351A1 (en) | 2004-11-17 |
| GB0303109D0 (en) | 2003-03-19 |
| US20050163572A1 (en) | 2005-07-28 |
| TNSN04157A1 (en) | 2007-03-12 |
| GB2385564A (en) | 2003-08-27 |
| MA26406A1 (en) | 2004-12-01 |
| WO2003070562A8 (en) | 2003-12-24 |
| WO2003070562A1 (en) | 2003-08-28 |
| AU2003208405A1 (en) | 2003-09-09 |
| NZ534878A (en) | 2006-03-31 |
| GB2385564B (en) | 2005-08-17 |
| BR0307983A (en) | 2004-12-07 |
| NO20043560L (en) | 2004-09-17 |
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