CN101978133B - Ship for drilling and production in icy waters - Google Patents
Ship for drilling and production in icy waters Download PDFInfo
- Publication number
- CN101978133B CN101978133B CN200980104887.6A CN200980104887A CN101978133B CN 101978133 B CN101978133 B CN 101978133B CN 200980104887 A CN200980104887 A CN 200980104887A CN 101978133 B CN101978133 B CN 101978133B
- Authority
- CN
- China
- Prior art keywords
- ship
- rotating turret
- ice
- buoy
- drilling riser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
-
- 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
- B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
-
- 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
- B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
-
- 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
- B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
- B63B35/12—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
Ship adapted for drilling of oil and/or gas wells, adapted for drilling through a drill riser string that extends from a well in the seabed to a turret arranged in the ship. The drill riser string is adapted to be separated from connection to the ship in a position beneath the ship's base line, so that the ship can leave the drill riser string.
Description
Technical field
The present invention relates to a kind of ship, it can be used for drilling for oil and/or the natural gas well, and exploits.Especially, the present invention relates to a kind of can be at the ship of waters, Arctic operation.Further, the present invention relates to a kind of system and some methods, this system and these methods are respectively as described in independent claims separately.
Background technology
Can be that everybody is known at ship off-shore boring's oil well, that there is rotating turret, for example US Patent No. 5,359,957 structures that disclose.Rotating turret makes ship become possibility with respect to the location of oil well any direction, and this is because ship can be round the central axis rotation of rotating turret.The rotation of above-mentioned ship is often needs, can be in order to reduce the load on mooring cable or propeller.For this purpose, ship can be located in some way and be made it bear as much as possible the less power from current.
In Arctic, marine ice will to ship be an additional challenge.Marine ice may be ice structure (iceberg), and it can force ship to leave oil well.This ship also may be piled up by floating ice.Floating ice can apply huge power to large ship, therefore must address these problems to avoid to produce excessive power on mooring cable or propeller with good method.
Summary of the invention
The first embodiment of the present invention provides a kind of ship, and it can be used for drilling for oil and/or the natural gas well.This ship is characterised in that it can drill by a drilling riser, and this drilling riser extends upwardly on the rotating turret ship from the oil well in seabed.This drilling riser can depart from and be connected with ship below the bottom of the bottom line of ship or ship, so that ship can leave this drilling riser.This way can make ship leave rapidly oil well becomes possibility.This drilling riser does not need to be pulled out and to take in ship, but can still be kept upright.
This rotating turret preferably includes a bottom, and this bottom can depart from by this way with ship: this bottom sinks down into an equilbrium position seawater from gap, in equilbrium position, this bottom is around at least a portion of this drilling riser.The bottom of this rotating turret has buoyancy, and therefore, in its equilbrium position, at least part of mooring cable can be lifted in this bottom.
This bottom is preferably mounted on mooring cable, and has buoyancy as mentioned above, so that it will sink down into an equilbrium position and make at least part of mooring cable keep being suspended on seabed after ship departs from.In this equilbrium position, this bottom will advantageously provide the support of side simultaneously for this drilling riser.This situation is possible, because the weight of mooring cable will make the bottom of this rotating turret be positioned at the top of oil well always.
Another embodiment of the invention provides a kind of ship, it can probing and/or recover petroleum and/or the natural gas well, and this ship can connect with at least one oil recovery riser pipe being connected with the rotating turret on ship, or be connected with a drilling riser, this drilling riser is connected with ship through a rotating turret.In this embodiment of the present invention, the bottom of this rotating turret extends to the following certain distance of bottom line of ship.This distance is preferably at least 3 meters.
Another embodiment of the invention provides a kind of ship, for probing and/or recover petroleum and/or the natural gas well, and this ship can connect with at least one oil recovery riser pipe being connected with the rotating turret on ship, or be connected with a drilling riser, this drilling riser is connected with ship through a rotating turret.Wherein, this ship comprises an ice barrier structure, and this ice barrier structure is from hull bottom to downward-extension, and partly around this rotating turret.
An embodiment more of the present invention provides a kind of ship, for probing and/or recover petroleum and/or the natural gas well, and this ship can connect with at least one oil recovery riser pipe being connected with the rotating turret on ship, or be connected with a drilling riser, this drilling riser is connected with ship through a rotating turret.The favourable of this ship is characterised in that:
And between stern, have two long side surfaces, on the length direction of two long side surfaces, at least 50% part, be provided with an ice band on the bow, this ice band has an angle α between shell and horizontal plane, the size of this angle α at 45 degree between 80 degree; And
This rotating turret has a central axis, and this central axis is positioned at the position of vertical distance between the head and the tail of 0.15 to 0.45 times of this ship before Lpp (head and the tail between vertical distance) the half place of ship.
The design like this of ship can make ship rotate, when ship is wrapped up by floating ice and the drift direction of ice and the long axis of ship have angle on the water surface.This and detailed description of the invention as in description very approaching.Feature favourable for this ship is also, if this gear has a parallel center-aisle, before the central axis of this rotating turret can be positioned at parallel center-aisle.
In arbitrary embodiment of the invention described above, the vertical length (Lpp) between bow tail preferably exceedes 200 meters, and beam is between 40 to 55 meters, and the draft of this ship is at least 10 meters.
Another embodiment of the invention provides a kind of connected system, it is for removably connecting one first element as being arranged at the rotating turret on ship, and one second element is as buoy, and this buoy can be used for accommodating mooring cable and at least one riser pipe.In the time that buoy will be connected with rotating turret, this system can remove the water of buoy top to reduce the hydraulic pressure of buoy top.So,, after the water of buoy top is removed, this buoy is pushed to the rotating turret of top by fluid pressure around.
One of them preferably includes a protrusion guiding structural the first element and the second element, and another in both comprises a groove, and the shape of this groove and this protrusion guiding structural match to accommodate this protrusion guiding structural and realize interconnecting between the two.One of them preferably can comprise a locking device the first element and the second element, and this locking device can be by the first element and the second element mechanical locking.In the present invention, designed system is applicable to processing the larger lateral force that ship produces in tie-out like this.This protrusion guiding structural and this groove can absorb the lateral force between the two, and can protect locking device to make it not be subject to the impact of lateral force.In the time of buoy and rotating turret disengaging, first this locking device is opened and is made it not affected by larger lateral force.Then, water is transported to the space of buoy top, so that buoy will sink and then separate with rotating turret.
This protrusion guiding structural is preferably coniform, and this groove preferably has coniform with this protrusion guiding structural shape corresponding matching.When buoy under the effect of the lateral force of mooring cable when sinking, this particularly preferred design of protruding guiding structural and groove can prevent from producing excessive power protruding between guiding structural and the surface of groove.When protruding guiding structural will be connected with groove time, this cone-shaped structure also contributes to proofread and correct and aiming at buoy and rotating turret easily.
Another embodiment of the invention provides a kind of method that a buoy is separated with the rotating turret on a ship, wherein, this buoy is connected with mooring cable and at least one riser pipe.The method comprises:
Locking device is opened from latched position; In latched position, locking device can be by buoy and rotating turret mechanical locking; And then
Carry water to the top of buoy to strengthen the fluid pressure of buoy top.
So,, in the time that buoy separates with rotating turret, this locking device can not be subject to the impact of excessive forces.
Another embodiment of the invention provides a kind of method that a buoy is connected with the rotating turret on a ship, wherein, this buoy is connected with mooring cable and at least one riser pipe.The method comprises:
(p) buoy is pulled to this rotating turret; And
(q) water of taking buoy upper area away is to reduce the fluid pressure of buoy upper area.
The method preferably can comprise that by locking device, by the step of buoy and rotating turret mechanical locking, this step can be carried out afterwards at step (p).In principle, this step can be in step (p) before, simultaneously or carry out afterwards.Preferably, this step is carried out afterwards in step (p).
From illustrating and can learn below, multiple embodiments of the present invention are particularly suitable for carrying out off-shore operation in Arctic, even if there is a large amount of ice to comprise that floating ice and iceberg are present in the situation on sea.
Brief description of the drawings
Below with reference to accompanying drawing, multiple detailed description of the invention are described, wherein
Fig. 1 a to Fig. 1 c is depicted as the schematic diagram of riser pipe and ship disengaging;
Fig. 2 a and Fig. 2 b are depicted as the ship of an embodiment of the present invention, and it has a rotating turret for drilling;
Fig. 3 a and Fig. 3 b are depicted as the ship of an embodiment of the present invention, and the part enlarged diagram of the ice band of this ship;
Fig. 4 a to Fig. 4 h is depicted as the method for the treatment of floating ice in an embodiment of the present invention;
Figure 5 shows that the position of a rotating turret on a ship in an embodiment of the present invention;
Figure 6 shows that a connected system, it is arranged at the rotating turret on ship for removably connecting a buoy and;
Figure 7 shows that a good embodiment of the connected system in Fig. 6.
Detailed description of the invention
Fig. 1 a to Fig. 1 c is depicted as the most important part of ship 1 in the present invention.This ship 1 is positioned at the top of oil well and/or natural gas well (not shown), and oil well and/or the natural gas well are positioned at preventer 3 (BOP) below.On ship 1, have a rotating turret 5, in the process of operation, ship 1 can rotate freely round the central axis of rotating turret 5.One hard drilling riser 7 is arranged between preventer 3 and rotating turret 5.This drilling riser 7 has a buoyancy elements 9, and this buoyancy elements 9 can be used for carrying a part of weight of this drilling riser 7.Certainly, also can adopt multiple buoyancy elements 9.A part of weight of this drilling riser 7 is carried by the regulating wheel of ship 1, and this regulating wheel can be offset the motion of ship 1 with respect to riser pipe 7 in the vertical directions.
The bottom of this rotating turret 5 is connected with mooring cable 11, in order to ship 1 is docked in to the suitable part of oil well top.
In the time that ship 1 need to leave oil well, must close oil well by preventer 3, and at drilling riser 7 and preventer 3 after separatings, drilling riser 7 be pulled up.But, by drilling riser 7 pull up need to be longer time.If larger ice structure as iceberg near time, ship 1 must stop drilling and sailing out of to avoid bumping with this ice structure.For fear of unnecessarily, mobile ship 1 and be wasted in the quality time on oil well while at every turn moving frequently, ship 1 can be designed so that it can depart from the top of drilling riser 7.Certainly, perhaps also have other reasons to require fast ship 1 to be sailed out of.
As shown in Figure 1 b, a separator 13 is arranged on the bottom line of ship or the bottom of ship to vertically distance of next section, and corresponding with drilling riser 7.This separator 13 is positioned at tension ring below.Herein, drilling riser 7 can separate with ship 1.The upper part of this separator 13 is upwards drawn and is pulled to ship 1, and the upper part of separator 13 and the lower part of separator 13 are separated respectively with the top of drilling riser 7.But the bottom of this rotating turret 5 is still placed on the top of drilling riser 7, therefore, ship 1 can not sail out of.
Fig. 1 c is depicted as the relation between top 5a and the bottom 5b of this rotating turret 5.After bottom 5b is separated with top 5a, bottom 5b will sink and arrange around drilling riser 7 in seawater.The bottom 5b of this rotating turret 5 has buoyancy, and it can carry at least a portion weight of mooring cable 11.The weight of mooring cable 11 will pull down bottom 5b to seabed, for example 50 meters.Because the bottom 5b of this rotating turret 5 still arranges around drilling riser 7, the bottom 5b of this rotating turret 5 can provide for drilling riser 7 support of side, and can prevent drilling riser 7 overturnings.A part for mooring cable 11 is positioned at seabed, and its weight contributes to keep bottom 5 to be positioned at suitable position, oil well top, even if drilling riser 7 leans against on the bottom 5b of rotating turret 5.As Fig. 1 c, bottom 5b can sink through the buoyancy elements 9 on drilling riser 7.Bottom 5b preferably can sink to an equilbrium position, and this equilbrium position is so away from the water surface to such an extent as to can avoid bottom 5b and ice collision.
Now, the bottom 5b of ship 1 and drilling riser 7, the rotating turret 5 connected with mooring cable 1 separates, and ship 1 can sail out of oil well.These operations, as mentioned above, will take the considerably less time, and have to the whole drilling riser 7 upwards to draw in compared with the scheme of ship 1.In the time that iceberg approaches, therefore operator has the longer stand-by period until must make the decision that ship 1 is sailed out of.This will save valuable time and unwanted movement, and unnecessary operation is interrupted.
This separator 13 preferably arranges in the manner described above, and still, this separator 13 also can be arranged on the position of drilling riser 7 belows.This separator 13 can be arranged on the upper end in the 5b of bottom, and in the time that the top of rotating turret 5 5a is connected with bottom 5b, the lower part of separator 13 is located immediately at the top of the equilbrium position of this bottom 5b.
A special advantage of the bottom 5b of this rotating turret 5 is that this bottom 5b extends to apart from the bottom line of ship or one segment distance place, below, the bottom of ship 1.When in the operation of the waters of many floating ices, bottom 5b can provide protection for drilling riser 7, prevents that drilling riser 7 is subject to the impact of ice mobile below the hull of ship 1.This bottom 5b can extend downward apart from a segment distance place below the bottom line of ship in seawater, and this distance can be 3 meters.This bottom 5b can be further to downward-extension, and for example, this distance can be 5 meters or more.
Fig. 2 a and 2b are depicted as the design principle schematic diagram of the hull of the ship 1 of an embodiment of the present invention.In these figure, ship 1 can be used for exploitation, and it comprises some soft riser pipes 15, and these soft riser pipes 15 extend to seabed from a rotating turret 105.Mode as above, a bottom 105b of this rotating turret 105 can separate and sink down into the equilbrium position place in seawater with ship 1, and at equilbrium position place, bottom 105b is still connected with mooring cable 11 and soft riser pipe 15.Bottom 105b preferably sinks to certain degree of depth as 50 meters, makes it can avoid contacting with the ice floating on the surface.This rotating turret 105, can, as above-mentioned for the rotating turret 5 of drilling, may extend to the one segment distance place, bottom line below apart from ship 1, in case the damage of stagnant ice to ship 1 grade.
As shown in Fig. 2 a and 2b, an ice barrier structure 17 extends from rotating turret 105.This ice barrier structure 17 forms skirt shape structure around rotating turret 105, and this ice barrier structure 17 is from hull bottom to downward-extension.This ice barrier structure 17 encloses ovalize, and its major axis is parallel with the long axis of ship 1.If the pathdepth of the drift of ice and ice barrier structure 17 present positions are when identical, ice barrier structure 17 contributes to ice guiding through rotating turret 105 and ice is split into a lot of pieces.So, ice barrier structure 17 contributes to protect soft riser pipe 15 and mooring cable 11.At the above-mentioned ship 1 for drilling, be preferably also designed with the ice barrier structure 17 with identical function.
Further as shown in FIG., skates 19 can be arranged on fore, break into pieces for the ice being run into, and ice can be directed into the side of ship simultaneously.Therefore, fore is characterised in that it can the seat below drift alow of anti-stagnant ice.Due to the angle between fore and water line, in the time that ice and fore meet, ice is first broken, is then left ship by the long central axis guiding of ship.
The bottom 5b of the rotating turret 5,105 in ship 1,105b preferably can be connected to ship 1 by hydraulic locking and releasing device (not shown).The size of hydraulic locking and releasing device must be designed to bear the full ice loading on the long limit that is applied to ship, general about 3000-10000 metric ton.Bottom 5b, the distance that 105b moves down should be abundant, to make it can lift at least part of carrying mooring cable and drilling riser (if while being installed in bottom or buoy 105b).Approximately 2000 to 5000 tonnes of this at least part of mooring cable and drilling risers.
Other shapes of hull:
Below a particularly preferred design of the hull for ship in the present invention 1 is described.Complete rotation as hereinafter the design of hull that is noted that ship 1 made well ship 1 have at intensive long axis in heaps and drift direction and ship under the floating ice impact of angle.
Fig. 3 a and 3b are depicted as and of the present inventionly a kind ofly can be used for drilling for oil and/or the ship 1 of the natural gas well.At the forward end of ship, be provided with a rotating turret 5,105.As previously mentioned, ship 1 here berths.Fig. 3 b is the cross-sectional view on one side of ship.Hull has a lower portion 1a, a mid portion or ice band 1b and a upper portion 1c.Ice band 1b is a part of region on hull, this subregion along water line around ship one week, and floating ice in ocean this subregion that will clash into ship 1.Because floating ice has different size and dimensions and ship 1 has different drafts, therefore, ice band 1b in the vertical direction has certain extension.As shown in Figure 3 b, between this ice band 1b and water line, there is an angle α.The size of angle α at 45 degree between 80 degree.
One long side surface with the ice band of above-mentioned design will produce this effect: when floating ice is when the direction that is an angle with the long axis of ship is clashed into ship 1, floating ice will be advanced downwards and floating ice is smashed by ice band 1b.From following description, can learn, this ship 1 will have sizable advantage in the time of the operation of Arctic, may have a large amount of ice be deposited in around ship in Arctic.
Below with reference to Fig. 4 a to 4h, these figure are depicted as the situation that the ship 1 in an embodiment of the present invention is wrapped up by the ice on sea.As mentioned above, ship berths by rotating turret 5,105.The preferably design of its ice band 1b of relying of the course of work of ship is achieved, and for convenience of explanation, supposes that the drift bearing of ice is as shown in arrow U, and drift bearing is perpendicular to one of long limit of ship, as shown in Fig. 4 a.Ice will apply huge power to ship 1, and produces reaction force F in the berth of ship.Ice is little by little encountered a long limit of ship broken, and this is the effect due to the angle α of inclination mentioned above.Ice drifts about to ship 1 unceasingly, and a long and narrow open water will form at the opposite side of ship 1, as shown in Figure 4 b.
Because ship berths by rotating turret 5,105 and rotating turret 5,105 is positioned at the fore of ship 1, in the time that the strength of ice (U) and berth (F) accumulation forms a revolving force on ship 1, ship 1 will start rotation.As shown in Fig. 4 c, the stern of ship 1 will proceed to long and narrow open water along the direction (U) of ice drift as far as possible far.Fig. 4 d is depicted as said process and proceeds the situation of a segment distance, fore be forced to along with ice the contrary direction of drift bearing (U) rotate and ice smashed.Whole ship 1 is as lever, around rotating turret 5,105 rotations.Fig. 4 e to 4h is depicted as the remainder of the whole course of work of ship, and last, ship 1 is adjusted to and makes its long axis parallel with the drift bearing of ice.In the time that ice continues drift, the fore that can open ice is smashed continuation ice, and the active force that the berth of ship is subject to will greatly reduce.
Said process has illustrated the ship 1 that is formed with ice band in the present invention on long limit, is how to be suitable on the water surface of the possibility that has ice to form or to be wrapped up by ice operation.The described ship that can operation in this place, has larger aspect ratio conventionally, and this will cause mooring cable to bear larger power.General drill ship comprises vertical long limit, and this will cause mooring cable to bear very large power, and this is that while meeting because of the vertical long limit of ice and ship, vertical long limit can not be broken, needs on the contrary by very large compressive force, ice to be crushed.
It should be noted that at this, the ship 1 in the present invention is not the position of adjusting greatly on its draft or its vertical direction by contacting with ice.This point is different from existing ship, and as Frahm polar ship, ice can apply very large power and by its picking-up to the long limit of the inclination of Frahm polar ship.
Natch, it is not enforceable on two long side surfaces of ship 1, being all provided with an ice band 1b with above-mentioned angle α.For example, on two long side surfaces of a ship 1, only have and in 50% part, be provided with an ice band with above-mentioned angle α, also can work.But this will cause unwanted and undesirable larger masterpiece to be used in ship and mooring cable.
For the process shown in Fig. 4 a to 4h is carried out rightly, rotating turret 5,105 must be arranged on position suitable on ship 1.For the position that illustrates that this is suitable, please refer to Fig. 5.Ship 1 is characterised in that vertical distance (LPP) between its head and the tail.According to the present invention, the position of rotating turret 5,105 on ship 1 preferably has such feature: the central axis of rotating turret 5,105 is before vertical distance half place between the head and the tail of ship, and apart from the vertical distance half 0.15-0.45Lpp of place between the head and the tail of ship.Further, if gear has a parallel center-aisle, before the central axis of rotating turret 5,105 can be preferably located in parallel center-aisle.
The design of the position of the hull of ship 1 and rotating turret 5,105 makes at any time, the active force of ice to ship can rotate best with joint efforts ship 1, thereby make the long axis of ship 1 and the drift bearing of ice parallel.Therefore, ship 1 is suitable for operation on having by the water surface of the possibility of a year or ice for many years parcel.
As mentioned above, the fore of ship 1 preferably has ice breaking structure design.Ship 1 also can preferably include the stern with the function of opening ice.This will be useful, in the time that the drift bearing of ice changes, for example, along contrary direction drift.
In addition, ship 1 preferably has some propellers, and these propellers can rotate the orientation in order to assist to adjust ship 1, can reduce the tension force on mooring cable 11 simultaneously.
Figure 6 shows that the schematic diagram of the connected system in preferred embodiments of the present invention.In known manner, a rotating turret 205a is arranged on ship 201 ship 201 can be rotated around the central axis of rotating turret 205a.On the bottom of rotating turret 205a, be connected with a buoy 205b.On buoy 205b, be connected with some mooring cables 211.Therefore, ship 201 can rely on mooring cable 211 to berth by buoy 205b.
These drilling risers 215 pass buoy 205b, and are connected with rotating turret 205a through linkage 221 separately.
Some locking devices 223 are for by buoy 205b and rotating turret 205a.Only schematically show locking device 223 herein.Locking device 223 preferably can be for being arranged on the hydraulically powered hook on rotating turret 205a, and it can coordinate in order to rotating turret 205a is connected with buoy 205b with the corresponding lock bolt on buoy 205b.
In the time that ship 201 is docked in to Arctic, the ice of bulk may cause producing larger power between buoy 205b and rotating turret 205a to the effect of hull.In order to make locking device 223 not be subject to the effect of larger power, preferably can one protrusion guiding structural 225 be set in rotating turret 205a bottom according to the present invention.In the time that buoy 205b and rotating turret 205a interconnect, protrude in the groove 227 that guiding structural 225 extends into the upper corresponding matching of buoy 205b.The wall of groove 227 and protrude guiding structural 225 and support and absorbed the part lateral force between buoy 205b and rotating turret 205a.In the time bearing from excessive load on mooring cable 211, protrude contacting between guiding structural 225 and groove 227 and make locking device 223 can not be subject to larger lateral forces.Protrude guiding structural 22 and be preferably coniform, preferably, its diameter is being 5 to 10 meters.But, other shapes as polygonal protrusion guiding structural be also feasible.In principle, the present invention also can adopt some less protrusion guiding structural or guide elements, in order to absorb the lateral force between rotating turret 205a and buoy 205b.
In the time that buoy 205b and rotating turret 205a link together, a sealing ring 229 seals the space 231 between buoy 205b and rotating turret 205a.Preferably, sealing ring 229 is rounded, and is arranged on the linkage 221 that is connected with drilling riser 215 and the outside of locking device 223.
In the time that buoy 205b is connected with rotating turret 205a, buoy 205b is upwards pulled to and is supported with rotating turret 205a, and makes sealing ring 229 that space 231 is sealed.When in connection status, between buoy 205b and rotating turret 205a, there is no or only has less lateral forces.Support and make sealing ring 229 that space 231 is sealed when buoy 205b has been pulled to rotating turret 205a, the water in space 231 can be extracted out through piping (not shown).Therefore water in space 231 substituted by air.Preferably, the gas pressure intensity in space 231 and atmospheric pressure approach.Before water in space 231 is drawn out of, preferably, buoy 205b is by locking device 223 and rotating turret 205a mechanical connection.
The liquid pressure of buoy 205b below is by the gas pressure intensity much larger than being positioned at the space 231 above buoy 205b.Buoy 205b can be arranged on lower than sea certain distance as 20 meters of.The pressure of buoy 205b below will be 2 atmospheric pressure, with regard to sea; the pressure of buoy 205b below will order about that buoy 205b upwards supports with rotating turret 205a and between produces a power to active force, the area that the size of power equals sealing ring 229 becomes to accumulate with pressure.When circular sealing ring 229 for example has the diameter of 20 meters, thrust upwards will be approximately 6300 tons.Therefore, in the connected system of an embodiment of the present invention, locking device 223 all contributes to buoy 205b to be connected with rotating turret 205a with liquid pressure as shown in Figure 6.
As mentioned above, when the ice action of bulk is during in the hull of ship 201, between buoy 205b and rotating turret 205a, larger lateral force will be produced.For example, if locking device 223, is the structure (not shown) that hook coordinates with bolt, by absorbing side forces, the lateral force of absorption is by excessive.This will cause difficulty to solving to connect, for example, hook pull-out is separated with bolt, in the time that huge masterpiece is used for both.In the time that buoy 205b separates with rotating turret 205a, the invention provides a solution and be included in buoy 205b and first locking device 223 opened from latched position before separating with rotating turret 205a.As previously mentioned, even if all contributing to buoy 205b to be connected locking device 223 with rotating turret 205a, opens from latched position liquid pressure.At locking device 223 after latched position is opened, to the interior conveying water in the space 231 between buoy 205b, rotating turret 205a and sealing ring 229.This makes buoy 205b start to sink, and then makes to protrude guiding structural 225 and separate with groove 227.
In the time that buoy 205b starts to sink, if between buoy 205b and rotating turret 205a by lateral force larger, larger power may be in the surface generation of protruding between guiding structural 225 and groove 227.Figure 7 shows that the problem in solving greatly for good embodiment of the present invention.Herein, protrusion guiding structural 225 is tapered.The contrary taper of one-tenth of groove 227 correspondences.In the time that buoy 205b is connected with rotating turret 205a, protrudes guiding structural 225 and will cooperatively interact with groove 227, the description of detailed description of the invention as shown in Figure 6.In this position, protrude guiding structural 225 and groove 227 absorbing side forces in an identical manner.When buoy 205b and rotating turret 205a at larger side when separating under power effect, buoy 205b will sink, meanwhile, mooring cable 211 draws buoy 205b to side.Protrude guiding structural 225 and do not have excessive masterpiece for their surface separately with the conicity of groove 227 by guaranteeing.The permission threshold of active force between the permission threshold of the lateral force that preferably, the design of conicity can apply according to the mooring cable of hope and protrusion guiding structural 225 and groove 227 surfaces.A possible range of conicity is an angle between horizontal plane and a surface of protrusion guiding structural 225 or groove 227
as shown in Figure 7, angle
size between 45 ° and 70 °.For example, conicity can design like this and make in the process separating, and protrudes guiding structural 225 and does not contact with the surface of groove 227, or can have contact and active force between the two to have a maximum value predetermined, permission.
In addition, conicity is also useful, connecting in the process of buoy 205b and rotating turret 205a, can be used as guide element in order to proofread and correct and easily buoy 205b to be aimed at rotating turret 205a because protrude guiding structural 225 with groove 227.
The buoy 205b of shape as described above and rotating turret 205a, buoy 205b can well arrange, even if the load that the load in side direction reaches on 6000 tons and vertical direction reaches 4000 ton hours, buoy 205b also can depart from from rotating turret 205a.But the present invention is not limited to these numerical value, because these numerical value depend on the size of connected system in essence.
The above-mentioned connected system being connected with ship 201, also can be for connecting with the rotating turret being connected with ship 5,105 in above-mentioned other detailed description of the invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a ship, be used for drilling for oil and/or the natural gas well, it is characterized in that, this ship can be drilled by a hard drilling riser, this drilling riser extends to the rotating turret this ship from the Oil/gas Well in seabed, wherein, this drilling riser can depart from and be connected with this ship below the bottom line of this ship, so that this ship can leave this drilling riser, this rotating turret is provided with a bottom separating with this ship, the bottom of this rotating turret will sink down into an equilbrium position along the drilling riser of being kept upright after ship departs from, in the bottom of this this rotating turret of equilbrium position around at least a portion of this drilling riser, the bottom of this rotating turret is connected with mooring cable, the bottom of this rotating turret has such buoyancy so that it will sink down into equilbrium position and make at least part of mooring cable keep being suspended on seabed after ship departs from, wherein, the bottom of this rotating turret provides the support of side direction simultaneously for this drilling riser.
2. ship as claimed in claim 1, is characterized in that, the length between the head and the tail vertical line of this ship exceedes 200 meters, and beam is between 40 to 55 meters, and the draft of this ship is at least 10 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310029885.3A CN103231779B (en) | 2008-02-05 | 2009-02-03 | A kind of ship that can be used for the drilling of many frozen water territory |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20080646 | 2008-02-05 | ||
| NO20080646 | 2008-02-05 | ||
| NO20080956 | 2008-02-25 | ||
| NO20080956A NO20080956L (en) | 2008-02-05 | 2008-02-25 | Ice-strengthened vessel for drilling and production in Arctic waters |
| PCT/NO2009/000040 WO2009099337A1 (en) | 2008-02-05 | 2009-02-03 | Ship for drilling and production in icy waters |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310029885.3A Division CN103231779B (en) | 2008-02-05 | 2009-02-03 | A kind of ship that can be used for the drilling of many frozen water territory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101978133A CN101978133A (en) | 2011-02-16 |
| CN101978133B true CN101978133B (en) | 2014-06-25 |
Family
ID=40952329
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310029885.3A Expired - Fee Related CN103231779B (en) | 2008-02-05 | 2009-02-03 | A kind of ship that can be used for the drilling of many frozen water territory |
| CN200980104887.6A Expired - Fee Related CN101978133B (en) | 2008-02-05 | 2009-02-03 | Ship for drilling and production in icy waters |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310029885.3A Expired - Fee Related CN103231779B (en) | 2008-02-05 | 2009-02-03 | A kind of ship that can be used for the drilling of many frozen water territory |
Country Status (8)
| Country | Link |
|---|---|
| EP (2) | EP3085614A1 (en) |
| KR (1) | KR101618886B1 (en) |
| CN (2) | CN103231779B (en) |
| CA (1) | CA2710072C (en) |
| NO (1) | NO20080956L (en) |
| RU (1) | RU2499724C2 (en) |
| SG (1) | SG188114A1 (en) |
| WO (1) | WO2009099337A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101687857B1 (en) * | 2010-03-31 | 2016-12-28 | 메르스크 서플라이 서비스 에이/에스 | Icebreaking vessel and method of breaking ice |
| CA2794935C (en) * | 2010-03-31 | 2016-09-27 | Maersk Supply Service A/S | An icebreaking vessel |
| US9056658B2 (en) | 2010-03-31 | 2015-06-16 | Maersk Supply Service A/S | Icebreaking vessel |
| CA2794933C (en) * | 2010-03-31 | 2016-09-27 | Maersk Supply Service A/S | An icebreaking vessel |
| DK177707B1 (en) | 2010-03-31 | 2014-03-24 | Maersk Supply Service As | Method of breaking ice |
| US9068424B2 (en) * | 2011-04-28 | 2015-06-30 | Bp Corporation North America Inc. | Offshore fluid transfer systems and methods |
| US20130029546A1 (en) * | 2011-07-29 | 2013-01-31 | John James Murray | Mooring Disconnect Arrangement |
| WO2014056982A1 (en) * | 2012-10-11 | 2014-04-17 | Dsm Ip Assets B.V. | Offshore drilling or production vessel |
| CA2893129A1 (en) * | 2012-12-21 | 2014-06-26 | Exxonmobil Upstream Research Company | System and method rapid disconnection of the drilling riser of a floating drilling platform |
| RU2533376C1 (en) * | 2013-07-10 | 2014-11-20 | Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" | Self-moving drilling ship for operation in arctic conditions |
| KR20160084243A (en) | 2015-01-05 | 2016-07-13 | 오션어스(주) | Submersible mooring apparatus and submersible mooring system having the same |
| RU2704403C2 (en) * | 2015-05-29 | 2019-10-28 | Маэрск Дриллинг А/С | Drilling method in arctic conditions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604961A (en) * | 1984-06-11 | 1986-08-12 | Exxon Production Research Co. | Vessel mooring system |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3620181A (en) * | 1969-07-02 | 1971-11-16 | North American Rockwell | Permanent ship mooring system |
| US4650431A (en) * | 1979-03-28 | 1987-03-17 | Amtel, Inc | Quick disconnect storage production terminal |
| US4436046A (en) * | 1982-02-01 | 1984-03-13 | Braley William W | Ice-breaking hull |
| JPS58180393A (en) * | 1982-04-16 | 1983-10-21 | Mitsui Eng & Shipbuild Co Ltd | Mooring structure |
| GB2118903B (en) * | 1982-04-16 | 1985-09-25 | Mitsui Shipbuilding Eng | Floating offshore structure |
| US4637335A (en) * | 1982-11-01 | 1987-01-20 | Amtel, Inc. | Offshore hydrocarbon production system |
| JPS6130484A (en) * | 1984-07-24 | 1986-02-12 | Mitsui Eng & Shipbuild Co Ltd | Buoyant structure for iced sea |
| DE8802053U1 (en) * | 1988-02-18 | 1989-06-15 | Thyssen Nordseewerke GmbH, 2970 Emden | Icebreaking ship |
| NO326914B1 (en) | 1991-09-30 | 2009-03-16 | Norsk Hydro As | Lathe for drilling or production vessels |
| EP0824447A4 (en) | 1995-05-11 | 2000-03-01 | Jens Korsgaard | Method and apparatus for mooring a vessel |
| EP0831023A1 (en) * | 1996-09-20 | 1998-03-25 | Single Buoy Moorings Inc. | Independently disconnectable buoy |
| US5794700A (en) * | 1997-01-27 | 1998-08-18 | Imodco, Inc. | CAM fluid transfer system |
| NO20060323L (en) * | 2006-01-23 | 2007-07-24 | Statoil Asa | Method and apparatus for positioning liquid installation, construction of ice cutter, and use thereof |
| NO330053B1 (en) * | 2006-05-22 | 2011-02-14 | Statoil Asa | System for loading and unloading hydrocarbons in ice water |
-
2008
- 2008-02-25 NO NO20080956A patent/NO20080956L/en not_active Application Discontinuation
-
2009
- 2009-02-03 WO PCT/NO2009/000040 patent/WO2009099337A1/en active Application Filing
- 2009-02-03 CN CN201310029885.3A patent/CN103231779B/en not_active Expired - Fee Related
- 2009-02-03 SG SG2013008719A patent/SG188114A1/en unknown
- 2009-02-03 CN CN200980104887.6A patent/CN101978133B/en not_active Expired - Fee Related
- 2009-02-03 KR KR1020107017597A patent/KR101618886B1/en active IP Right Grant
- 2009-02-03 EP EP16170143.8A patent/EP3085614A1/en not_active Withdrawn
- 2009-02-03 EP EP09708916.3A patent/EP2250075A4/en not_active Withdrawn
- 2009-02-03 CA CA2710072A patent/CA2710072C/en not_active Expired - Fee Related
- 2009-02-03 RU RU2010126667/11A patent/RU2499724C2/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604961A (en) * | 1984-06-11 | 1986-08-12 | Exxon Production Research Co. | Vessel mooring system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101618886B1 (en) | 2016-05-09 |
| CN103231779B (en) | 2015-11-18 |
| CN103231779A (en) | 2013-08-07 |
| RU2499724C2 (en) | 2013-11-27 |
| CA2710072A1 (en) | 2009-08-13 |
| KR20100118109A (en) | 2010-11-04 |
| WO2009099337A1 (en) | 2009-08-13 |
| EP2250075A4 (en) | 2013-08-21 |
| CA2710072C (en) | 2016-07-12 |
| RU2010126667A (en) | 2012-03-20 |
| EP3085614A1 (en) | 2016-10-26 |
| SG188114A1 (en) | 2013-03-28 |
| EP2250075A1 (en) | 2010-11-17 |
| CN101978133A (en) | 2011-02-16 |
| NO20080956L (en) | 2009-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101978133B (en) | Ship for drilling and production in icy waters | |
| US7377225B2 (en) | Spar-type offshore platform for ice flow conditions | |
| EP0494497B1 (en) | Method and apparatus for production of subsea hydrocarbon formations | |
| US7628224B2 (en) | Shallow/intermediate water multipurpose floating platform for arctic environments | |
| US20030000740A1 (en) | Subsea well intervention vessel | |
| CN101109269B (en) | Deepwater drilling device based on near surface deviation | |
| US6199500B1 (en) | Device by ship for production/test production of oil/gas from a field below seabed level | |
| CN107249977B (en) | Floating ship | |
| KR101778381B1 (en) | FDLPSOU - Floating Drilling, LNG Production-Storage-Offloading Unit | |
| US6457536B1 (en) | Method and system for exploiting natural resources under the seabed | |
| NO336533B1 (en) | System for mooring a large vessel | |
| CN201121487Y (en) | Deepwater drilling device based on near surface deviation | |
| KR101814626B1 (en) | Turret system | |
| KR20160089663A (en) | Riser Handling System And Method | |
| KR101399596B1 (en) | Complex type marine structure and operating method thereof | |
| KR102196983B1 (en) | A drillship | |
| KR102196986B1 (en) | A drillship | |
| KR102196979B1 (en) | A drillship | |
| CN201092825Y (en) | Deepwater drilling device containing automatically righting subaqueous blowout preventer | |
| KR102225570B1 (en) | Apparatus of support for riser | |
| KR20160004519U (en) | marine structure | |
| KR101403615B1 (en) | Offshore structure having moon pool for multiples of blow out preventer | |
| KR20240128389A (en) | Turret device | |
| KR101687974B1 (en) | Semi-submersible Production System Moored by a Single Tendon | |
| KR20150047887A (en) | Moon pool slamming prevention structure, and ship including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20180203 |