CN103180513A - Ice worthy jack-up drilling unit with conical piled monopod and sockets - Google Patents
Ice worthy jack-up drilling unit with conical piled monopod and sockets Download PDFInfo
- Publication number
- CN103180513A CN103180513A CN2011800504559A CN201180050455A CN103180513A CN 103180513 A CN103180513 A CN 103180513A CN 2011800504559 A CN2011800504559 A CN 2011800504559A CN 201180050455 A CN201180050455 A CN 201180050455A CN 103180513 A CN103180513 A CN 103180513A
- Authority
- CN
- China
- Prior art keywords
- ice cube
- piling
- shell
- taper
- prop stand
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000005452 bending Methods 0.000 claims abstract description 26
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims description 38
- 239000000758 substrate Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 239000003643 water by type Substances 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000283323 Delphinapterus leucas Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 108010059642 isinglass Proteins 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/48—Means for searching for underwater objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/26—Means for indicating the location of underwater objects, e.g. sunken vessels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/0021—Means for protecting offshore constructions against ice-loads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/008—Drilling ice or a formation covered by ice
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
- E21B7/136—Underwater drilling from non-buoyant support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2211/00—Applications
- B63B2211/06—Operation in ice-infested waters
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0069—Gravity structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Acoustics & Sound (AREA)
- Earth Drilling (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to an ice worthy jack up rig with a conical piled monopod working together to drill wells and produce hydrocarbons in ice prone locations. The inventive rig would work like a conventional jack up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the legs are held in place by cans embedded in the sea floor to resist lateral movement of the rig and in sockets attached to the conical piled monopod. Both the hull and conical piled monopod are shaped with ice bending surfaces to bend and break up ice that comes into contact.
Description
Technical field
The present invention relates to often be called " self lift type " drilling unit or offshore boring island in the movably offshore drilling unit (offshore drilling unit) of the typical degree of depth less than the shallow water probing hydrocarbon of 400 feet.
Background technology
To hydrocarbon forever in continuous seeking, had been found that a lot of oil and gas reserves in the past 150 years.Developed a lot of technology to find new deposit and resource, in order to look for new discovery, tellurian a lot of areas are detected.Few people think can also be in the residential community and the place that can be easy to arrive find any large-scale, undiscovered resource.Yet, found new large-scale deposit in having more challenge and very unattainable zone.
A kind of zone that has a extensive future is arctic greater coasting area.Yet the arctic is remote and cold, and the ice cube on the water surface all forms sizable challenge concerning the exploration of hydrocarbon and production.For many years, generally all think in order to find each profitable oil well, must six oil wells that no profits came in of probing.If this situation is true, the probing of people's oil well of wishing all that no profits came in is not expensive so.Yet in the arctic, rarely what is not expensive.
Now, in the shallow waters in the place of cold weather as the arctic, self lift type or removable offshore drilling unit (MODU) at the shorter water surface of time without using 45 to 90 days the summer of ice (open water).The start and end time in prediction probing season is a game of chance, and must pay a lot of effort and when can be drawn to safely drilling position and when can begin probing to determine the self lift type drilling unit.Once you begin probing, completing as soon as possible drilling well is quite urgent thing, to avoid having to interrupt and cancel drilling well owing to having occured to freeze before completing drilling well.Even in several time-of-weeks of the water surface without ice, in offshore boring island position in place, floating ice is very large for self-elevating drilling platform harm, the spud leg of self-elevating drilling platform also is exposed to outer and very easily is damaged.
Self-elevating drilling platform be movably, platform self lift type, that carry out offshore drilling and well maintenance, this offshore boring island is equipped with spud leg, this spud leg is arranged to be reduced to the seabed and then shell is risen on the water surface.Self-elevating drilling platform comprises that typically probing and/or well maintenance equipment, spud leg are from rising system, crewman sitting room, loading and unloading equipment, large-sized liquefied material storage area, helicopter alighting deck and other relevant devices and equipment.
Self-elevating drilling platform is designed to be drawn to situ of drilling well and rises on the water surface, therefore thereby the wave active force of seawater only affects the spud leg with quite little cross section, allows the wave active force in the situation that do not impose on the remarkable momentum of self-elevating drilling platform and advanced from the side.Yet the spud leg of self-elevating drilling platform clashes into floating ice does not almost have defence capability, and any have the floating ice of certain scale to cause structural destruction and/or offshore boring island is pushed away original position one or more spud legs.Before fixing and waste disposal, this type event having occured if suspend and completed suitably at drillng operation, hydrocarbon may occur so leak.Even this type of leakage of little risk is all unacceptable completely concerning regulator and the public in oil and natural gas industry.
Therefore, in case determine to have begun in shorter season this time after the potential profitable oil well of probing, introduce possibly very large-scale, based on the production system of gravity or similar structure, and they are set in the long-time process of seabed to be used for probing and to produce hydrocarbon.These structures based on gravity are very large-scale and very expensive, and are constructed to and can stand ice load the whole year.Any chance that reduces safely the development cost of the arctic all can be saved the very money of enormous quantity.
Summary of the invention
The present invention more specifically relates to a kind of system, described system comprises for drill the iceproof self-elevating drilling platform of hydrocarbon under potential icing environment at greater coasting area, described offshore boring island comprises: floating shell, described floating shell has the deck of the opposed flattened of the section of being located thereon.Described floating shell also comprise along its underpart and around the periphery of described shell downwards and the ice cube bending shape that extends internally, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell.The one ice cube section of being folded to is configured to extend with round described shell guiding ice cube rather than it is directed under described shell around the periphery of the bottom of described shell.Within at least three spud legs are positioned in the periphery of bottom of described floating shell, wherein, can be with described offshore boring island towing through shallow water area thereby described spud leg is arranged to promote aweigh, and described spud leg also can extend to described seabed and further extend with described shell is local or all rise on the water surface.Thereby device is related with each spud leg makes the described iceproof self-elevating drilling platform can be floating by the buoyancy of described shell in order to described spud leg is promoted from the seabed from rising, also in order to will shift onto in the seabed under described spud leg, and when floating ice threatens described offshore boring island with described shell local lifting on the water surface, and when not having ice cube, described shell is all risen on the water surface.Described system also comprises the taper piling prop stand with a main body, described taper piling prop stand has the substrate that is positioned at the bottom and the deckhead that is positioned at the top, and wherein described substrate is attached to pile body in being pressed into the seabed when described taper piling prop stand is installed for use.The main body of described taper piling prop stand comprises the ice cube composition surface of inclination, described ice cube composition surface extends to narrower upper area around described main body and from wider lower area, and wherein said lower area is positioned under the sea and described upper area is positioned on the sea.Described taper piling prop stand also comprises the auricle with bracket, described bracket be designed to receive be arranged in wait to be mounted and at least one of spud leg to be held in place on footing to be used for via described taper piling prop stand and to drill.Described offshore boring island is arranged to the operation together with described taper piling prop stand by its shell being risen on the sea, and drill with the prop stand of driving piles via described taper above extending to described taper piling prop stand, thereby and be arranged to contact with the ice cube bending shape of described offshore boring island with employing ice cube defence attitude ice cube when thin ice occurring himself dropping in water, and remove described offshore boring island when thick ice occurring.
The invention still further relates to a kind of for the method in the waters drilling well that is easy to freeze.Described method comprises provides the prop stand of the taper piling with a main body, described taper piling prop stand has the ice cube composition surface of the substrate, the deckhead that is positioned at the top and the inclination that are positioned at the bottom, described ice cube composition surface extends to narrower upper area around described main body and from wider lower area, wherein said lower area is positioned under the sea and described upper area is positioned on the sea, wherein, described taper piling prop stand comprises at least one with the auricle of bracket, and described bracket is used for receiving and keeping the footing of self-elevating drilling platform.Pile body is pressed into the seabed and described pile body is attached to described taper piling prop stand so that described taper piling prop stand is fixed to the seabed.One offshore boring island is provided, described offshore boring island has floating shell, described floating shell has the deck of the opposed flattened of the section of being located thereon, and have the ice cube bending shape along its underpart, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell.The one ice cube section of being folded to is arranged to extend around the periphery of the bottom of described shell, with round described shell guiding ice cube rather than it is directed under described shell.Within at least three spud legs are positioned in the periphery of bottom of described floating shell.Fall each spud leg, so that the described bracket that is arranged on the described auricle of at least one footing and described taper piling prop stand on the bottom of of described spud leg engages, and remaining footing engages with the seabed or engage with another bracket on auricle, and when ice cube does not constitute a threat to for described offshore boring island during the situ of drilling well drilling well at described offshore boring island, described shell is all risen on the water surface.Also described shell is dropped in water to be in ice cube defence configuration, thereby make described ice cube bending shape on the sea and under extend, so that collide the ice cube bending of described offshore boring island, so that described ice cube sinks under the water surface and bear in the position that described ice cube flows through described offshore boring island the bending power that ice cube is broken.In the side on described deck from offshore boring island and the drilling well downwards via described taper piling prop stand.
Description of drawings
Explanation with reference to carrying out below in conjunction with accompanying drawing can obtain to the present invention and the more complete understanding of advantage of the present invention, wherein:
Fig. 1 is elevation of the present invention, and wherein offshore boring island swims in water, and can be drawn to situ of drilling well;
Fig. 2 is elevation of the present invention, and wherein offshore boring island rises on the water surface;
Fig. 3 is the elevation for the defence configuration of drilling well during potential icing environment of being in of the first embodiment of the present invention, and wherein, offshore boring island has dropped in ice/water interface partly, but still by its spud leg supporting;
Fig. 4 is local amplification front elevation, and it shows an end of the first embodiment of the present invention that is in Fig. 3 configuration, and its medium floe just moves in face of this offshore boring island;
Fig. 5 shows the elevation of offshore boring island, and this offshore boring island is being shifted to taper piling prop stand to drill via taper piling prop stand downwards;
Fig. 6 shows the elevation of offshore boring island, and this offshore boring island is arranged on taper piling prop stand to drill downwards via taper piling prop stand;
Fig. 7 shows the elevation of offshore boring island, and wherein, this offshore boring island is arranged near taper piling prop stand in its ice cube defence configuration; And
Fig. 8 is top view, and it shows and is positioned to via taper piling prop stand the offshore boring island of probing downwards.
The specific embodiment
Now then one or more preferred structures of the present invention are arranged be elaborated, should be appreciated that in other structural configuration and also can embody feature of the present invention and concept, scope of the present invention is not limited to the embodiment that describes or illustrate here.Scope of the present invention is only by the circumscription of following claim.
As shown in Figure 1, the iceproof self-elevating drilling platform is generally by arrow 10 expressions.Self-elevating drilling platform 10 is depicted as its shell 20 and swims in large marine and its spud leg 25 and be in during lift structure arranges in Fig. 1, wherein extends above the deck 21 of major part at shell 20 of spud leg 25 length in this lift structure is arranged.On deck 21 is to be installed to drilling well suspension 24 and with the derrick 30 of other traditional equipments and system, this is conducive to the probing of well.In configuration as shown in Figure 1, self-elevating drilling platform 10 can be drawn to another situ of drilling well and be drawn to another shore base to be used for maintenance and other seashore services from a shore base from a situ of drilling well.
When self-elevating drilling platform 10 was drawn to the situ of drilling well that is arranged in general shallow water, spud leg 25 was fallen via the notch in shell 20 (enclosing well) 27 until be positioned at the footing 26 of the bottom of spud leg 25 and engage with seabed 15 as shown in Figure 2.In a preferred embodiment, footing 26 is connected to shoe 28 so that offshore boring island 10 is fixed to the seabed.In case footing 26 engages with seabed 15, the lifting drilling cramp in notch 27 (jacking rig) pushes away spud leg 25 downwards, so shell 20 is thus lifted on the water surface.In the situation that shell 20 fully rises on the water surface, the wave effect that is similar to the so large-scale floating object of shell 20 with shock is compared, and any wave active force and billow are all more easily broken through spud leg 25.
When beginning to freeze on sea 12, for traditional self-elevating drilling platform; the risk that floating ice contacted and damaged spud leg 25 with spud leg 25 or easily self-elevating drilling platform 10 pushed away situ of drilling well becomes a major hidden danger, and this offshore boring island is typically until the water surface just moves apart situ of drilling well when finishing season without ice.Iceproof self-elevating drilling platform 10 of the present invention is designed to that as shown in Figure 3 ice cube is defensive by adopting, configuration that shell is in water is defendd floating ice.In Fig. 3, ice cube trends towards killing the sea and billow, so that sea 12 seems danger is not high, yet the risk factor of marine environment is only changed and do not weakened.
When iceproof self-elevating drilling platform 10 adopted the configuration that its ice cube is defensive, shell is in water, shell 20 was reduced in water contact with water, and still not dropping to shell 20 can begin floating degree.Most of weight of offshore boring island 10 preferably remains on spud leg 25, and the position with opposing floating ice any pressure that may cause with offshore boring island 10 remains on situ of drilling well.Offshore boring island 10 is fallen, and is clear that from Fig. 4 intilted ice cube bending surperficial 41 strides across sea 12 to engage with any floating ice that may touch offshore boring island 10 thereby make.
The ice cube bending surface 41 that tilts extends downwardly into neck line 44 from the shoulder 42 of the edge that is positioned at deck 26.Ice cube jet deflector 45(ice deflector) from neck line 44 to downward-extension.Therefore, when the floating ice shown in 51 touches offshore boring island 10, ice cube bending surface 41 makes the leading edge of floating ice 51 sink under sea 12 and to it and applies sizable bending power, and this sizable bending power makes pack fracture into the ice cube that size is less, that destructive power is less, coefficient of injury is lower.For example, can expect that the hundreds of foot even may can touch offshore boring island 10 by several miles so large floating ices.If floating ice fractures into longest dimension less than the fritter of 20 feet, so this fritter can be from offshore boring island 10 surrounding processes, and hidden danger is obviously less.
In Fig. 5, generally by the taper piling prop stand of Reference numeral 60 expression by pre-installation to the seabed.This taper piling prop stand 60 is the structures that can be used in the offshore locations that is easy to freeze, and with traditional comparing based on gravity structure (GBS), the cost of this structure is lower.Taper piling prop stand 60 comprises main body 65, substrate 67 and deckhead 70.This substrate 67 preferably has the flange shape, isolated hole or the perforation with the periphery of the prop stand 60 of driving piles around taper of this flange shape.Substrate 67 is arranged to be placed on seabed 15.When taper piling prop stand 60 was arranged on the seabed, the weight of taper piling prop stand was preferably supported by a plurality of pile bodies 68, and this pile body 68 is pressed into dearly in seabed 15 and then is attached to taper piling prop stand 60.Typically, pile body 68 is pressed in sea bed about 35 meters to about 75 meters and deeply for good and all is fixed on its offshore locations with prop stand 60 that taper is driven piles.But pile body 68 typically be the pipe of the solid hollow that works as spike or pipe fitting similar structures and, for the permanent platform that is used for offshore hydrocarbon probing and production operation, provide on structure effectively layout.This pile body has the relatively large diameter between 1 meter to 3 meters and has the thickness of about 2cm to 10cm.A certain benefits of the present invention is: in the situation that the gravity of taper piling prop stand 60 is by pile body 68 supportings, there is no need to carry out sea bed preparation before installing or carry out seldom sea bed preparation, if there is sea bed preparation, the seabed that needs in principle to form a level is arranged on the seabed of this level with the prop stand 60 of when pile body 68 is installed, taper being driven piles.The seabed that comprises soft muddy material is unlikely hollowed out and is unlikely replaced it with hard material.
Be minimized or do not exist in the situation that taper piling prop stand 60 by pile body 68 supportings, is used for the seabed preparation of installation taper piling prop stand 60.In case pile body 68 is pressed into the seabed and is attached to securely substrate 67, and pile body 68 provides opposing to following power: the power that (a) causes structure to be slided along the seabed; (b) cause the power of structure upset, such as the power at several meters on the substrate that acts on structure; And the power that (c) causes vertical motion up and down.For move up and down or the power of overthrowing that mobile repellence may be applied by ice cube in opposing aspect be very important.Pile body 68 opposings that are positioned at taper piling prop stand 60 front sides may be overthrown to resist at the lifting force that upstream side applies by ice cube, are arranged in simultaneously the distally of taper piling prop stand 60 or pile body 68 opposings in rear side or downstream and may allow rear side deeper to roll moving downward of seabed 15.For for the annual operation of carrying out in the coastal waters ice cube environment that is easy to freeze and must resist sizable ice load, use the long pile body of this kind that effectively substrate on structure is provided.Pile body platform is remained on the tram as nail and structurally the situation than GBS is more effective, in the situation that GBS, only the size by structure and gravity provide the repellence to upset.
Vertical force by prediction and the size of lateral force and the edaphic intensity that pile body 68 is pressed into are determined length and the quantity of pile body 68.Preferably, be arranged to surrounding around substrate 67 on pile body 68 strategies in order to resist sliding force and tilting force with the construct validity of maximum.This substrate can comprise at least 8 pile bodies that have each other certain intervals around periphery, preferably at least 16 pile bodies, 64 pile bodies at the most, to maximize like this construct validity and form pile body bunch, a large amount of pile bodies works to resist lateral force and supporting taper piling prop stand 60 together in this pile body bunch.According to the strength characteristics of prediction load and soil, it is dark that pile body 68 typically extends to 35 meters to 75 meters of sea beds.Taper piling prop stand 60 is depicted as octahedral structure, but class circle or circular in configuration also can adopt.Preferably, for the ease of making, preferably structure has 6,8 or 12 limits even, and preferably each limit size equates and the symmetrical configuration of taper piling prop stand 60.
The main body 65 of taper piling prop stand 60 comprises the ice cube composition surface 72 that extends to the inclination on sea 12 under the sea 12, thus marine ice cube particularly floating ice engage on the ice cube composition surface 72 of inclination with main body 65.Ice cube composition surface 72 extends around the periphery of taper piling prop stand 60, thereby all contacts on ice cube composition surface 72 with main body 65 from the ice cube of all directions.The slope of ice cube composition surface 72 makes any a slice ice cube to rise and to bend to snap point on the slope, and the slope of this ice cube composition surface 72 is the angle between 40 ° to 60 ° typically, more preferably from the horizontal by 55 ° of angles roughly.The berg that fractures (being called rubble ice) will move round main body 65 under ocean current and wind action.Above ice cube composition surface 72, taper piling prop stand 60 comprises a shape, so that the ice cube that pushes away on ice cube composition surface 72 1 road directions leaves.Deck 70 is positioned at the top of taper piling prop stand 60, and this deck 70 can be equipped be used to the drilling template of drilling a lot of wells (drilling template).
Taper piling prop stand 60 is sizable structures: in this structure, typically the size on deck 70 is greater than the span of 75 meters.Taper piling prop stand huge and solid in, an advantage that is better than based on gravity structure of taper piling prop stand is before any Water Ballast, gentlier or more specifically density is less for the weight cardinal principle.For taper piling prop stand, the solid ballast material is generally unwanted.(GBS) typically has 0.21 ton/m based on gravity structure
3To 0.25 ton/m
3Density, and taper piling prop stand 60 can be configured to 0.20 ton/m
3With down to about 0.18 ton/m
3Frequently, GBS may need the solid ballast thing to increase its weight so that the repellence to sliding and overturning to be provided.By using 68 bunches of pile body 68 or pile bodies, taper piling prop stand 60 can design to such an extent that have lighter weight.Except due to for the preparation of the seabed that is used for large-scale GBS system be used for often joining the low installation cost that the release of on-the-spot setting up cost of the high density ballast materials of GBS causes, the lighter density of taper piling prop stand 60 also can show as lower manufacturing and cost of transportation.
Although taper piling prop stand 60 may be equipped with derrick and system for drilling well, if but can come drilling well still to have cost savings by self-elevating drilling platform---because taper piling prop stand size point a little, so certainly only just have cost savings aspect size, more need not mention the cost savings of all drilling well associated equipments and system.The drilling well of carrying out via the iceproof offshore boring island of taper piling prop stand utilization such as platform 10 provides extra cost savings, and reason is: when icing sign is just arranged, offshore boring island need not be dragged away from.Can utilize the more wells of iceproof offshore boring island 10 probing every year, this iceproof offshore boring island 10 can be held in place the long period until during other offshore boring island autumns of withdrawing already.
In the situation that the taper prop stand 60 of driving piles is fixed to seabed 15, offshore boring island 10 moves into as shown in Figure 5, and installs to drill via taper piling prop stand 60 as shown in Figure 6 downwards.A particular aspects of the present invention is from the extended auricle 75 of the substrate 67 that comprises the pile body 68 on seabed 15 to be fixed to.Aim to join in the bracket at auricle 75 tops from the nearest shoe 28 of taper piling prop stand 60 and be held in place by clamping element 78.Therefore, provide extra to pressed the repellence of the movement that causes by ice by offshore boring island 10 being attached to taper piling prop stand to offshore boring island 10.This structural configuration is called as " Ahab's bracket ", with reference to the captain in " beluga note ", his wooden artifucial limb is inserted in knothole in ship with the Simultaneous Stabilization self in whaling.
In a single day the spud leg 25 of iceproof offshore boring island 10 is fixed to just can bear limited ice threat on bracket, wherein this spud leg 25 will be configured to more solid than traditional spud leg that is used for self-elevating drilling platform.Yet in the situation that ice threatens from existing more significantly, iceproof offshore boring island 10 can select to stay in the original place, suspending a well operation and employing ice cube defence configuration as shown in Figure 7.In this attitude, touch one of them of offshore boring island 10 and taper piling prop stand 60 or both ice cubes and will be fractureed and be directed to float around system.When ice cube reduces, can restart drilling well, when ice cube becomes too thick, offshore boring island 10 can be moved apart the scene fully until next the probing begins season.Shape (intensity that also has shell 20) by shell 20 provides the ability that ice cube is crooked and fracture, and has extended the probing time window, and this has significantly reduced the cost of drilling being easy to icing position.Although preferably offshore boring island 10 is set near one of them of a plurality of of taper piling prop stand as shown in Figure 8, this offshore boring island 10 can be as shown in 20A from any direction near taper piling prop stand.
Also should be noted that spud leg 25 and notch 27(wherein, spud leg 25 is connected to shell 20 by notch 27) all be positioned at the periphery of ice cube jet deflector 45 within, thereby when offshore boring island 10 was in as shown in Figure 3 ice cube defense attitude configuration (configuration that sometimes is in water also referred to as shell), floating ice unlikely touched spud leg.In addition, offshore boring island 10 needn't be processed each floating ice and threaten, and this has improved the profit of oil and gas company significantly.Drilling short one month of season if offshore boring island 10 can extend, will be 50% raising so in some zones that are easy to freeze, and therefore the benefit of out and out saving cost is provided to this industry.
At last, should be noted that the discussion to any reference is not to admit that it is prior art of the present invention, particularly disclose the reference of date after the application's priority date.Simultaneously, following every and each claim is brought in this detailed description or explanation hereby with as additional embodiment of the present invention.
Although described system described here and processing in detail, be to be understood that on the basis that does not break away from the spirit and scope of the present invention that limited by following claim and can carry out multiple modification, replacement and change.Those of skill in the art can study preferred embodiment, and recognize with described here be not duplicate other modes of the present invention that realize.Within being intended that of inventor all brought modification of the present invention and equivalent the scope of claim into, the scope that is not intended to limit the present invention of manual, summary and accompanying drawing simultaneously.The present invention attempts to expand to the same wide in range with following claim and their equivalent especially.
Claims (15)
1. one kind is used for drilling and produce the system of hydrocarbon at greater coasting area under potential ice-formation condition, and described system comprises:
Offshore boring island, described offshore boring island comprises: floating shell, described floating shell has the deck of the opposed flattened of the section of being located thereon, and have along its underpart and around the periphery of described shell downwards and the ice cube bending shape that extends internally, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell; Ice cube is folded to section, and described ice cube is folded to section and extends around the periphery of the bottom of described shell, to guide ice cube round described shell rather than ice cube is directed under described shell; At least three spud legs, within described spud leg is positioned at the periphery of bottom of described floating shell, wherein, can be with described offshore boring island towing through shallow water area thereby described spud leg is arranged to promote aweigh, and described spud leg also can extend to the seabed and further extend with described shell is local or all rise on the water surface; And certainly rise device, described related with each spud leg from rising device, thereby in order to being promoted, described spud leg make aweigh the described iceproof self-elevating drilling platform can be floating by the buoyancy of described shell, also in order to will shift the seabed onto under described spud leg, and when floating ice threatens described offshore boring island with described shell local lifting on the water surface, and all rise to described shell on the water surface when not having ice cube; And
taper piling prop stand, described taper piling prop stand has a main body, described taper piling prop stand has the substrate that is positioned at the bottom and the deckhead that is positioned at the top, wherein being installed, the described substrate when using of described taper piling prop stand is attached to pile body in being pressed into the seabed, described taper piling prop stand has the ice cube composition surface of inclination, described ice cube composition surface extends to narrower upper area around described main body and from wider lower area, wherein said lower area is positioned under the sea and described upper area is positioned on the sea, described taper piling prop stand comprises the auricle with bracket, described bracket is configured to receive the footing that is positioned at least one described spud leg to be attached He to be held in place to be used for via described taper piling prop stand and to drill,
Wherein, described offshore boring island is arranged to its floating shell is risen on the sea and via described taper piling prop stand and is drilled, thereby and be arranged to and himself drop in water adopting ice cube defence attitude to make that ice cube contacts with the ice cube bending shape of described offshore boring island when having thin ice, and be arranged to move apart when having thick ice.
2. system according to claim 1, also comprise the clamping element that is positioned at described bracket place, and described clamping element optionally remains on footing in described bracket, and discharge when needed described footing.
3. system according to claim 1 and 2, is characterized in that, the described ice cube bending surface of described offshore boring island is from the less neck alignment of size and be tilted out to larger-size shoulder.
4. system described according to any one in aforementioned claim, is characterized in that, the surperficial in the vertical direction of described ice cube bending of described offshore boring island extends at least 8 to 10 meters or more.
5. system according to claim 4, is characterized in that, in the scope that the described ice cube bending surface of described offshore boring island and vertical direction angulation are in 30 ° to 60 °.
6. system described according to any one in aforementioned claim, is characterized in that, the described main body of described taper piling prop stand has the span of at least 60 meters, and described taper piling prop stand structure has less than about 0.20 ton/m
3Density.
7. system described according to any one in aforementioned claim, is characterized in that, described pile body is positioned at 35 meters or darker of described substrate belows.
8. system described according to any one in aforementioned claim, is characterized in that, described pile body is positioned at 50 meters or darker of described substrate belows.
9. method that is used in the waters drilling well that is easy to freeze, described method comprises:
One taper piling prop stand is provided, this taper piling prop stand has a main body, described taper piling prop stand has the ice cube composition surface of the substrate, the deckhead that is positioned at the top and the inclination that are positioned at the bottom, described ice cube composition surface extends to narrower upper area around described main body and from wider lower area, wherein said lower area is positioned under the sea and described upper area is positioned on the sea, wherein, described taper piling prop stand comprises at least one with the auricle of bracket, and described bracket is used for receiving and keeping the footing of self-elevating drilling platform;
Pile body is pressed into the seabed and described pile body is attached on described taper piling prop stand so that described taper piling prop stand is fixed to the seabed;
Offshore boring island is provided, described offshore boring island has floating shell and ice cube is folded to section, described floating shell have the section of being located thereon opposed flattened the deck and along the ice cube bending shape of its underpart, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell, and described ice cube is folded to section and extends with round described shell guiding ice cube rather than ice cube is directed under described shell around the periphery of the bottom of described shell;
Provide at least three spud legs, within described spud leg is positioned at the periphery of bottom of described floating shell;
Fall each spud leg, so that the described bracket that is arranged on the described auricle of at least one footing and described taper piling prop stand on the bottom of of described spud leg engages, and remaining footing engages with the seabed or engages with another bracket on auricle, thereby falling of described spud leg also rises on the water surface lifting that makes progress of described shell fully when ice cube does not constitute a threat to for described offshore boring island during the situ of drilling well drilling well at described offshore boring island;
Described shell is dropped in water to be in ice cube defence configuration, thereby make described ice cube bending shape on the sea and under extend so that collide the ice cube bending of described offshore boring island so that described ice cube sinks under the water surface and bear in the position that described ice cube flows through described offshore boring island the bending power that ice cube is broken; And
At the sidepiece on described deck and via the downward drilling well of described taper piling prop stand.
10. method according to claim 9, is characterized in that, the step that described pile body is pressed into the seabed also comprise the pile body with at least 1 meter of diameter be pressed in the seabed at least 35 meters dark.
11. according to claim 9 or 10 described methods, it is characterized in that, described ice cube bending surface extends to the neck line from shoulder, more specifically comprises described shell is dropped to and makes described neck line be positioned under the sea at least 4 meters and described shoulder in water to be positioned on the sea at least 7 meters thereby described shell is dropped to step in water.
12. the described method of any one according to claim 9 to 11 also comprises the step that when the harmfulness of floating ice reduces, described shell is risen on the water surface.
13. the described method of any one according to claim 9 to 12 is characterized in that, the step that described pile body is pressed into the seabed also comprise the pile body with at least 1.5 meters of diameters be pressed in the seabed at least 50 meters dark.
14. the described method of any one according to claim 9 to 13 is characterized in that, the step that described pile body is pressed into the seabed also comprise the pile body with at least 2 meters of diameters be pressed in the seabed at least 60 meters dark.
15. a method that is used in the waters drilling well that is easy to freeze, described method comprise the described offshore boring island of any one and taper piling prop stand in use according to claim 1 to 8.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40549710P | 2010-10-21 | 2010-10-21 | |
| US61/405,497 | 2010-10-21 | ||
| US41495010P | 2010-11-18 | 2010-11-18 | |
| US61/414,950 | 2010-11-18 | ||
| US13/277,791 | 2011-10-20 | ||
| US13/277,755 US8821071B2 (en) | 2010-11-18 | 2011-10-20 | Conical piled monopod |
| US13/277,755 | 2011-10-20 | ||
| US13/277,791 US20120128426A1 (en) | 2010-10-21 | 2011-10-20 | Ice worthy jack-up drilling unit |
| PCT/US2011/057378 WO2012054891A1 (en) | 2010-10-21 | 2011-10-21 | Ice worthy jack-up drilling unit with conical piled monopod and sockets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103180513A true CN103180513A (en) | 2013-06-26 |
| CN103180513B CN103180513B (en) | 2016-06-08 |
Family
ID=48173979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180050455.9A Expired - Fee Related CN103180513B (en) | 2010-10-21 | 2011-10-21 | Iceproof jack-up rigs unit and boring method |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2630303B1 (en) |
| KR (1) | KR20130120463A (en) |
| CN (1) | CN103180513B (en) |
| CA (1) | CA2811946C (en) |
| RU (1) | RU2564711C2 (en) |
| SG (1) | SG189116A1 (en) |
| WO (1) | WO2012054891A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10415315B2 (en) | 2015-05-29 | 2019-09-17 | Maersk Drilling A/S. | Arctic drilling process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972199A (en) * | 1972-06-26 | 1976-08-03 | Chevron Research Company | Low adhesional arctic offshore platform |
| GB2017794A (en) * | 1978-03-29 | 1979-10-10 | Chevron Res | Offshore Structure |
| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| WO2007126477A2 (en) * | 2006-03-30 | 2007-11-08 | Exxonmobil Upstream Research Company | Mobile, year-round arctic drilling system |
| CN101289846A (en) * | 2008-06-12 | 2008-10-22 | 天津大学 | Auto spiral lifting active ice resistant device |
| CN201172814Y (en) * | 2007-12-04 | 2008-12-31 | 中国石油集团海洋工程有限公司 | Shallow sea self-lifting production testing work platform |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2048372C1 (en) * | 1991-01-25 | 1995-11-20 | Борис Борисович Клячкин | Ice breaking device |
| RU2361039C2 (en) * | 2007-02-19 | 2009-07-10 | Виктор Ильич Мищевич | Method for erection of multi-support technological platform |
-
2011
- 2011-10-21 WO PCT/US2011/057378 patent/WO2012054891A1/en active Application Filing
- 2011-10-21 KR KR1020137010002A patent/KR20130120463A/en not_active Application Discontinuation
- 2011-10-21 EP EP11779048.5A patent/EP2630303B1/en not_active Not-in-force
- 2011-10-21 CA CA2811946A patent/CA2811946C/en not_active Expired - Fee Related
- 2011-10-21 RU RU2013123049/03A patent/RU2564711C2/en not_active IP Right Cessation
- 2011-10-21 CN CN201180050455.9A patent/CN103180513B/en not_active Expired - Fee Related
-
2012
- 2012-10-21 SG SG2013022595A patent/SG189116A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972199A (en) * | 1972-06-26 | 1976-08-03 | Chevron Research Company | Low adhesional arctic offshore platform |
| GB2017794A (en) * | 1978-03-29 | 1979-10-10 | Chevron Res | Offshore Structure |
| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| WO2007126477A2 (en) * | 2006-03-30 | 2007-11-08 | Exxonmobil Upstream Research Company | Mobile, year-round arctic drilling system |
| CN201172814Y (en) * | 2007-12-04 | 2008-12-31 | 中国石油集团海洋工程有限公司 | Shallow sea self-lifting production testing work platform |
| CN101289846A (en) * | 2008-06-12 | 2008-10-22 | 天津大学 | Auto spiral lifting active ice resistant device |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2013123049A (en) | 2014-11-27 |
| RU2564711C2 (en) | 2015-10-10 |
| CN103180513B (en) | 2016-06-08 |
| EP2630303A1 (en) | 2013-08-28 |
| SG189116A1 (en) | 2013-05-31 |
| EP2630303B1 (en) | 2015-07-22 |
| KR20130120463A (en) | 2013-11-04 |
| WO2012054891A1 (en) | 2012-04-26 |
| CA2811946C (en) | 2015-06-09 |
| CA2811946A1 (en) | 2012-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2555976C2 (en) | Jack-up drilling rig with two derricks for operation under ice conditions | |
| CN103180515A (en) | Ice worthy jack-up drilling unit with pre-loading tension system | |
| US8870497B2 (en) | Ice worthy jack-up drilling unit with conical piled monopod | |
| US8807875B2 (en) | Ice worthy jack-up drilling unit with conical piled monopod and sockets | |
| CN103168133A (en) | Ice worthy jack-up drilling unit with moon pool for protected drilling in ice | |
| CN103180514B (en) | With the iceproof jack up drilling unit of gas stirring and spud leg ice cube protector | |
| CN103168137B (en) | Iceproof jack-up rigs unit | |
| US6968797B2 (en) | Method for installing a self-floating deck structure onto a buoyant substructure | |
| CN103180513A (en) | Ice worthy jack-up drilling unit with conical piled monopod and sockets | |
| CN103168136B (en) | With the iceproof jack-up rigs unit of taper piling prop stand | |
| CN103221613A (en) | Conical piled monopod | |
| CN103168135B (en) | With the iceproof jack up drilling unit of gas stirring formula ice cube protection | |
| US20040159276A1 (en) | Method for installing a self-floating deck structure onto a buoyant substructure | |
| CN103154379A (en) | Ice worthy jack-up drilling unit with telescoping riser | |
| CN103168134A (en) | Ice worthy jack-up drilling unit secured to the seafloor | |
| NL2005415C2 (en) | Improvements in manufacturing and installing multiple offshore constructions. |
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: 20160608 Termination date: 20161021 |