CN206926791U - A kind of jack up partly latent multifunctional platform - Google Patents
A kind of jack up partly latent multifunctional platform Download PDFInfo
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- CN206926791U CN206926791U CN201720460464.XU CN201720460464U CN206926791U CN 206926791 U CN206926791 U CN 206926791U CN 201720460464 U CN201720460464 U CN 201720460464U CN 206926791 U CN206926791 U CN 206926791U
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Abstract
The utility model discloses a kind of jack up partly latent multifunctional platform, and it includes box deck, the jack up spud leg that connection box deck bottom plays a supportive role, being linked together with jack up spud leg provides the floating body of buoyancy and stability；The floating body is included on annular buoyancy tank and annular buoyancy tank along the outward-dipping column of annular buoyancy tank geometric center vertical axis；The utility model uses outer oblique column design, coordinates regulation jack up spud leg length and floating body ballast, platform can be made to have good stability and superior exercise performance all the time；Platform deck is directly supported by jack up spud leg, and deck is relatively independent with floating body so that the optimization design on deck, buoyancy tank and column is easier to realize.The utility model overall performance is good, and changing load is big, and oil storage capacity is strong, build, installation it is low with running cost, operating efficiency is high, can meet the several work function such as platform well drilling, well workover, production of hydrocarbons and Oil ＆ Gas Storage under the conditions of rough seas.
Description
Technical field
The invention belongs to ocean engineering technology equipment field, is related to available for drilling well, well workover, production of hydrocarbons and Oil ＆ Gas Storage
Multifunctional floating platform, more particularly to one kind be suitable for dry type recover the oil, wet type recover the oil and dry and wet combined type recover the oil etc. difference adopt
The jack up partly latent multifunctional platform of oily pattern.
Background technology
Compared with TLP and SPAR platforms, semisubmersible platform have stability is good, capacity of anti-storm is strong, floor space is big,
Changing load is big, is applicable the advantages that depth of water scope is wide, is that the large-scale floating marine oil-gas exploration being most widely used in the world is opened
One of hair equipment.But traditional semisubmersible platform comes with some shortcomings, as platform center of gravity is of a relatively high so that the stability of platform is abundant
Degree is little；Only operation and production function, and oil storage capacity is insufficient；Especially heaving amplitude is larger, can not support dry type
Production tree, cause running cost high, operating efficiency is low.
For deficiency existing for traditional semi-submerged platform, occurs a series of new semisubmersible platform concept in recent years.It is but new
Platform and new technology also bring the problem of some are new while traditional semisubmersible platform performance is improved, and such as use long column
With deep drinking water caused by vortex-induced vibration problem, it is vertical/horizontal shake the natural period reduce caused by exercise performance reduce, what new construction was brought
Safety of structure challenge, long column make it that hull harbour is installed and support boat transport difficult, deep drinking water cause platform cost drastically on
Rise, etc..
With the continuous expansion of offshore and gas development scale, the main battle ground of gas and oil in sea exploitation has turned to deep-sea.
The high cost of the uncertain and traditional deep-sea oil gas development facility of geological reservoir determines the excessive risk of deepwater field exploitation
Property.Especially under the international big environment of the long-term continued downturn of current oil price, it is effectively to drop to improve platform utilization rate to greatest extent
The key measure of low deep-sea oil gas cost of exploration ＆ development.Therefore, exploitation is a kind of has drilling well, well workover, oil recovery, production processing, storage
The Multifucntional semi-submerged platform of oily ability, a kind of necessary choice will be provided for following marine oil gas field development.
Utility model content
It is a primary object of the present invention to overcome the shortcomings of existing semisubmersible platform, there is provided one kind be suitable for dry type recover the oil,
The different production modes such as wet type is recovered the oil and dry and wet combined type recovers the oil, and there is drilling well, well workover, production of hydrocarbons and Oil ＆ Gas Storage simultaneously
Deng jack up partly latent multifunctional platform.
To achieve the above object, the technical scheme is that：
A kind of jack up partly latent multifunctional platform, including deck, floating body and the jack up stake being connected between deck, floating body
Leg, wherein：The deck is the box deck of body structure, sets up multiple equipment cabin inside box deck separately, in box deck
Centre is preset with moon pool；The floating body includes annular buoyancy tank and the column being arranged on above annular buoyancy tank, and column is hollow sealing knot
Structure, multiple columns are symmetrically laid in the periphery of annular buoyancy tank, and the center of annular buoyancy tank is preset with center well, the center of annular buoyancy tank
The geometric center of well and the moon pool on box deck is on same vertical line.
Such scheme further comprises：
Vertical axis of the column along annular buoyancy tank geometric center is outward-dipping, and mutual by dowel between column
Connection, the inner space of column is divided into several watertight cabins.
The outer surface of the column is fixedly connected with spiral shape side plate.
The overhanging wing of buoyancy tank is equipped with the alien invasion of the annular buoyancy tank.
The jack up spud leg uses transmission truss framed leg；The cross section of the column is circular or rhombus；It is described vertical
Column symmetry sets 4 or 6；The center well and moon pool are square rounding or rectangle rounding；The horizontal stroke of the annular buoyancy tank
Section is square rounding or rectangle rounding, and the inside of annular buoyancy tank, which is provided with, includes ballast tank, oil storage chamber, production function cabin
Room, drilling equipment cabin and pump room.
The part ballast tank of the annular buoyancy tank fills weight in cabin, ensures platform using ballast mode is permanently fixed
Centre of buoyancy is higher than center of gravity.
The present invention has the following advantages that due to using above technical scheme：
The deck of platform of the present invention is directly supported by jack up spud leg, is not directly contacted with floating body, overcomes column size
Influence to deck layout, designer can independently define deck size, floor space and shape design is more met deck work
The operating process requirement of skill module, improve the security of platform operations efficiency and top facility arrangement；Because upper chunk is to floating
Body limitation is smaller, thus column spacing, water plane area, floating body displacement etc. can also be optimized on a large scale, flat so as to improve
Platform overall performance.
According to marine environmental conditions and operating mode and the difference of load condition, the lifting passed through between deck and jack up spud leg fills
Put, deck can move up and down along spud leg, with reasonable adjusting deck to the spud leg length between buoyancy tank, and combine buoyancy tank ballast amount
Increase and decrease, so as to the purpose of being optimal platform height of C.G., displacement, the moment of inertia and water plane area, make platform more preferable
Ground adapts to the operating condition of different waters.
The platform that transmission truss framed leg carries relative to traditional column, it can largely save rolled steel dosage；In ocean current ratio
More serious marine site, it is easy to ocean current by reducing drag force, so as to reduce mooring heaving pile stress and platform motion；And
And wave climbing along spud leg can also be reduced, it is effectively improved platform air gap performance.
The design of outer tiltedly column make it that column spacing is larger at Water Plane, thus the moment of inertia of waterplane of platform is larger, from
And larger initial metacentric height and restoring moment are obtained, effectively reduce the vertical/horizontal stress for shaking motion and anchoring system of platform；It is vertical
The inclined side of post is also beneficial to Enhanced Radiation Reduced Blast damping, so as to increase natural heaving period, reduces catenary motion；By changing certainly
Lift-type spud leg length, optimize the ballast amount and its ratio of column and annular buoyancy tank displacement, platform height of C.G. is reduced and is eaten
Water increase, platform stability have larger nargin, the vertical additional mass increase of platform, and natural heaving period is significantly improved, avoided
The area of energy concentration of wave, and then the improvement of platform heaving performance overcomes traditional semisubmersible platform close to optimal
The big inherent shortcoming of heave amplitude, so that top-tensioned drilling well/oil recovery of the arrangement with dry type tree is stood on platform
Guard system is possibly realized.
Because column does not undertake Texas deck load, less column diameter is can be designed as, this causes the waterline of column
Face area is smaller, and column diameter very little compared with wavelength, the diffraction effect of wave column substantially weakens, and effectively reduction can act on
In the surface wave load of platform, while reduce the sound of the coupling hydrodynamic analysis between column and column and between column and spud leg
Should, and further increase natural heaving period, improve platform exercise performance；In addition, column is circular, square or polygon rhombus column
Body structure, drag of the wave to platform can be effectively reduced；The spiral shape water conservancy diversion side plate of column side can effectively suppress ocean current institute
Caused by platform whirlpool swash response；Swash motion problems in the whirlpool that the inclined design of column also contributes to improve platform；With vertical pillars type
Formula is compared, and oblique pillar construction has more preferable structural strength, can be made better against moment of flexure caused by wave and platform gravity
The increase of general structure intensity.
The floating box structure of the present invention is roomy box structure, and its sharp corner is designed as rounding, can reduce the towing of wave
Power.Part ballast tank in annular buoyancy tank fills iron ore or other weights using ballast mode is permanently fixed in cabin, can be notable
The center of gravity of platform is reduced, ensures that platform is higher than center of gravity in centre of buoyancy at any time, configures ballast tank in addition, eaten for adjusting platform
Water depth reaches designed draft position, so that platform keeps deeper drinking water state to swash to reduce heaving during service
Power is encouraged, not only realizes unconditional stability of the platform in marine environment, and improves the heaving performance of platform.
Annular buoyancy tank not only increases volume of compartment, improves effectively holding for platform relative to the sponson of column bottom
Carry, reduce platform center of gravity, improve stability, simultaneous can also play heave plate function, increase platform horizontal stroke/longitudinal direction and vertical additional mass
And damping, and then increase horizontal stroke/pitching and natural heaving period, improve horizontal stroke/pitching and heaving performance；In addition, pass through inside
Cabin optimization design, displacement is separated in rational position, can obtain than equal displacement traditional semisubmersible platform more
High additional mass.
Annular buoyancy tank can be used as platform integrated support structure, and enough buoyancy is provided for platform, increase platform useful load,
Strengthen the self-holding ability of platform, moreover it is possible to platform lower structure is turned into an integral frame structure, the load that single upright column is subjected to
Platform overall structure is passed to, so as to improve platform bulk strength, is effective against acting on the environmental load of platform；Meanwhile ring
Shape floating box structure can be also transmitted effectively due to the interaction force between each column caused by wave and the uneven loading of platform.Cause
This, platform has good overall structure rigidity and intensity, can effectively reduce the tired focus stress of platform connecting node, reduces
Fatigue rupture, welding, building technology difficulty are reduced, improve platform integrally-built fatigue life, improved platform and adapt to severe sea
The ability of foreign environment.
Floating body is in symmetric shape, simple for structure, is appropriate for modularized design and construction, to reduce cost, shorten and build
Duration, and because the similarity degree of each modular structure is high, reduce further design and the difficulty built, it is possible to achieve design
With the seriation of construction.
Platform of the present invention is small compared with other new moldeed depth drinking water semi-submerged platform drafts, and displacement is big, can effectively reduce platform
Construction, transport and installation difficulty.It is not required to large-scale floating crane cooperation, it is possible to achieve marine easy installation.Towage or shift operation
When, discharge the ballast water in annular buoyancy tank, keep platform shallow draft, reduce towage resistance, and by deck along under jack up spud leg
Be down to close to annular buoyancy tank, reduces the center of gravity of platform as far as possible, reduces wind area, improves the towage stability of platform, realize platform
Harbour installation and overall towage, avoid the risks of Attention problems, reduce installation cost.
In summary, platform stability nargin of the present invention is big, and hydrodynamic performance is superior, it would be preferable to support dry type tree, it is variable
Load is big, and oil storage capacity is strong, and structural shape is succinct, and overall construction intensity is good, builds and the difficulty of installation reduces, while have brill
The multi-functionals such as well, well workover, oil recovery, production processing, operating efficiency is high, the whole life span available for the exploitation of deep water hydrocarbon field
In.The raising of platform combination property and utilization rate can substantially reduce oil field whole development cost.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of four spud leg platforms of exemplary embodiments of the present invention
Overall structure diagram when Fig. 2 is the platform towage of the present invention
Fig. 3 is the floating body part-structure schematic diagram of the present invention
Fig. 4 is the facade structures schematic diagram of the four spud leg platform concrete applications of the present invention
Each mark is as follows in figure：
1 box deck, 2 floating bodies, 3 jack up spud legs, 4 rigs and oil vapor treatment module, 5 annular buoyancy tanks, outside 6 tiltedly column,
The overhanging wing of 7 buoyancy tanks, 8 spiral shape side plates, September pond, 10 center wells, 11 production of hydrocarbons standpipes/drilling riser pipe.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples, but the invention is not limited in following implementation
Example.
Embodiment 1：
One floating body；The floating body includes the column on annular buoyancy tank and the annular buoyancy tank；In the annular buoyancy tank
Centre is provided with cylindrical or prismatic center well；The inside of the annular buoyancy tank is provided with ballast tank, oil storage chamber, production function cabin
Room, drilling equipment cabin and pump room；The part ballast tank of the annular buoyancy tank fills weight using ballast mode is permanently fixed in cabin
Thing, ensure that the centre of buoyancy of platform is higher than center of gravity；The top of the annular buoyancy tank sets the column that at least four is arranged symmetrically, and
Vertical axis of the column along the annular buoyancy tank geometric center is outward-dipping；The inner space point of the every outer tiltedly column
It is segmented into some watertight cabins；
One box deck；The box deck is provided with oil vapor treatment system, dry and wet production wellhead, drilling equipment, positioning
Anchoring system and moon pool；The inside on the box deck is provided with production functional cabin and drilling equipment cabin；The moon pool and institute
The geometric center of the center well of annular buoyancy tank is stated on a vertical line；
At least three jack up spud legs：The jack up spud leg uses transmission truss framed leg；The jack up spud leg connects
The annular buoyancy tank and the box deck are connect, and supports the box deck and load thereon；The jack up spud leg can
The lowering or hoisting gear for crossing electric hydraulic, electric gear rack-and-pinion or electromagnetism lifting technology lifts on the box deck to required height
Degree.
Foregoing jack up partly latent multifunctional platform, the platform is using the jack up spud leg support box deck and thereon
Load；Spud leg length, quantity, the sectional dimension of the jack up spud leg between the box deck and the annular buoyancy tank
And fulcrum can be adjusted with the actual arrangement of the jack up spud leg and quality and the stage+module requirement of upper module
Section.
Foregoing jack up partly latent multifunctional platform, the floating body is not direct to be connected with the box deck, the box
Deck size is not limited by spud leg spacing, can independently be defined according to the box deck space demand；The annular buoyancy tank
Size and the outer tiltedly quantity of column and the size can also optimize to a wide range, to ensure good exercise performance and steady
Property.
Foregoing jack up partly latent multifunctional platform, the facade of the annular buoyancy tank is square or rectangle；The annular buoyancy tank
Cross section be square rounding or rectangle rounding；The outer tiltedly column is symmetrical arranged 4 or 6, is respectively arranged on the ring
The outer side position of shape buoyancy tank；The annular buoyancy tank has extended in the outside of the outer tiltedly column.
Foregoing jack up partly latent multifunctional platform, the cross section of the outer tiltedly column is circular, square rounding or other
Regular polygon rounding, and the side installation spiral shape side plate of the every outer tiltedly column.
Foregoing jack up partly latent multifunctional platform, the center well at the annular buoyancy tank center, it is allowed to standpipe and other pipes
Road therefrom passes through；Standpipe is in the jack up spud leg coverage and the center well by good protection.
Embodiment 2：
As shown in figure 1, jack up partly latent multifunctional platform provided by the invention includes 1, one, a box deck floating body 2
And the jack up spud leg 3 for connecting box deck 1 and floating body 2.Wherein, rig and oil gas are disposed with box deck 1
The grade facility of processing module 4, the inside of box deck 1 are provided with production functional cabin and drilling equipment cabin；Floating body 2 includes annular buoyancy tank
5 and annular buoyancy tank 5 on it is outer tiltedly column 6.The annular inside of buoyancy tank 5 is provided with ballast tank, oil storage chamber, production functional cabin, drilling well
Equipment cabin and pump room, the part ballast tank of annular buoyancy tank 5 are filled weight in cabin, ensured flat using ballast mode is permanently fixed
The centre of buoyancy of platform is higher than center of gravity, and the buoyancy tank overhanging wing 7 part of the annular buoyancy tank 5 outside on the outside of oblique column 6 helps to increase platform buoyancy
Carried with effective, and further improve the exercise performance of platform.Outer tiltedly vertical axis of the column along the annular geometric center of buoyancy tank 5 to
Outer incline, the side installation spiral shape side plate 8 of outer tiltedly column 5, inner space is divided into some watertight cabins.Box deck 1
The center well 10 of moon pool 9 and annular buoyancy tank 5 is consistent in vertical direction, to facilitate the oil gas of rig and oil vapor treatment module 4
Production riser/drilling riser pipe 11 extends there through, and provides cross-brace for standpipe 11.
As shown in Fig. 2 during towage of the present invention, box deck is dropped to close to annular buoyancy tank along jack up spud leg, tried one's best
Platform center of gravity is reduced, reduces platform wind area, improves towage stability, reduces towage resistance, reaches the wind for avoiding Attention problems
Danger, reduce the purpose of installation cost.
As shown in figure 3, the floating body of the present invention is made up of annular buoyancy tank 5 and outer tiltedly column 6.Can variable load in order to increase platform
Lotus, displacement and oil reserve, reduce platform center of gravity and make annular buoyancy tank relative with heave plate function, the surrounding of annular buoyancy tank
It is overhanging in outer tiltedly column 6, form the overhanging part of the wing 7 of annular buoyancy tank.
Fig. 4 is facade structures view when production of hydrocarbons module is arranged on deck.
The present invention is only illustrated with above-described embodiment, and structure, set location and its connection of each part are all to have
Changed, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and equivalent
Conversion, should not be excluded outside protection scope of the present invention.
The present invention makes full use of the length adjustment function of jack up spud leg and the floating body of outer tiltedly column and annular buoyancy tank composition
Ballast function, reduce platform center of gravity, improve platform stability, improve platform exercise performance, especially reduce heaving amplitude,
So as to meet the requirement of dry tree oil recovery；Huge annular buoyancy tank inner space may be partitioned into the drillings such as oil storage chamber, ballast tank, pump room
The functional cabin of production；Jack up spud leg, which designs, make it that upper chunk and floating body size are not influenceed by column spacing, and conveniently
According to regulating working conditions spud leg length, the overall performance optimized design of platform is realized, reduction harbour is installed and the difficulty of overall towage
Degree.
Claims (6)
1. a kind of jack up partly latent multifunctional platform, including deck, floating body and the jack up stake being connected between deck, floating body
Leg, it is characterised in that：The deck is the box deck of body structure, sets up multiple equipment cabin, box separately inside box deck
Deck center is preset with moon pool；The floating body includes annular buoyancy tank and the column being arranged on above annular buoyancy tank, and column is hollow
Sealing structure, multiple columns are symmetrically laid in the periphery of annular buoyancy tank, and the center of annular buoyancy tank is preset with center well, annular buoyancy tank
Center well and box deck moon pool geometric center on same vertical line.
2. jack up partly latent multifunctional platform according to claim 1, it is characterised in that：The column is several along annular buoyancy tank
The vertical axis at what center is outward-dipping, and is connected with each other between column by dowel, if the inner space of column is divided into
Dry watertight cabin.
3. jack up partly latent multifunctional platform according to claim 2, it is characterised in that：The outer surface of the column is fixed
It is connected with spiral shape side plate.
4. the jack up partly latent multifunctional platform according to claim 1,2 or 3, it is characterised in that：The annular buoyancy tank
The overhanging wing of buoyancy tank is equipped with alien invasion.
5. jack up partly latent multifunctional platform according to claim 4, it is characterised in that：The jack up spud leg is using saturating
Empty truss framed leg；The column is symmetrical arranged 4 or 6, and its cross section is circular or regular polygon rounding；The center
Well and moon pool are square rounding or rectangle rounding；The cross section of the annular buoyancy tank is square rounding or rectangle rounding
Angle, the inside of annular buoyancy tank, which is provided with, includes ballast tank, oil storage chamber, production functional cabin, drilling equipment cabin and pump room.
6. jack up partly latent multifunctional platform according to claim 5, it is characterised in that：The part pressure of the annular buoyancy tank
Cabin is carried using ballast mode is permanently fixed, weight is filled in cabin, ensures that the centre of buoyancy of platform is higher than center of gravity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460464.XU CN206926791U (en) | 2017-04-28 | 2017-04-28 | A kind of jack up partly latent multifunctional platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720460464.XU CN206926791U (en) | 2017-04-28 | 2017-04-28 | A kind of jack up partly latent multifunctional platform |
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| CN206926791U true CN206926791U (en) | 2018-01-26 |
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ID=61352131
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791737A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of jack up partly latent multifunctional platform |
| CN109029210A (en) * | 2018-07-11 | 2018-12-18 | 中国海洋大学 | Floating ocean platform measurement of air gap system and method |
| CN108791737B (en) * | 2017-04-28 | 2024-05-03 | 中石化石油工程技术服务有限公司 | Self-elevating semi-submersible multifunctional platform |
-
2017
- 2017-04-28 CN CN201720460464.XU patent/CN206926791U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791737A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of jack up partly latent multifunctional platform |
| CN108791737B (en) * | 2017-04-28 | 2024-05-03 | 中石化石油工程技术服务有限公司 | Self-elevating semi-submersible multifunctional platform |
| CN109029210A (en) * | 2018-07-11 | 2018-12-18 | 中国海洋大学 | Floating ocean platform measurement of air gap system and method |
| CN109029210B (en) * | 2018-07-11 | 2023-11-28 | 中国海洋大学 | Floating ocean platform air gap measurement system and method thereof |
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