CN1174584A - Offshore platform with buoyant rig supplemental support - Google Patents
Offshore platform with buoyant rig supplemental support Download PDFInfo
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- CN1174584A CN1174584A CN 95197507 CN95197507A CN1174584A CN 1174584 A CN1174584 A CN 1174584A CN 95197507 CN95197507 CN 95197507 CN 95197507 A CN95197507 A CN 95197507A CN 1174584 A CN1174584 A CN 1174584A
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- offshore platform
- lift type
- platform structure
- jacket base
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- 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
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- 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
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- 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
- E02B17/024—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 shock absorbing means for the supporting construction
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- 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
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- 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
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
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- 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
- E02B2017/0052—Removal or dismantling of offshore structures from their offshore location
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Jib Cranes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
An offshore platform structure (10) is disclosed for temporarily using a jack-up rig (34), for well operations in deepwater applications having a bottom founded jacket base (12) which supports a surface tower (28) which extends above the ocean surface (30) and a subsea rig support interface (110) which is adapted to support the jack-up rig (34) for well operations. At least one selectively buoyant rig support buoyancy tank (112) is connected to the rig support interface whereby a portion of the temporary load on the jacket base in supporting the jack-up rig for drilling operations may be alleviated.
Description
The present invention relates to a kind of platform and system that is used to carry out the offshore hydrocarbon mining operations.More particularly, the present invention relates to a kind of platform structure that is used for to use at deep water the self lift type rig.
The self lift type rig provides a derrick and the correlative equipment used in aboveground boring, completion or operation.These equipments are installed on the hull/deck of associating, and the latter can float to operating location with these facilities.Be provided with a plurality of columns that can shrink, they can move the self lift type rig easily.In case float to the position of routine work, column just pressurization is fallen, and pegs the seabed up to them.Further pressurization is delivered to column with load from the buoyancy hull, makes hull/deck emersion water surface to the splash zone top, to form a stable offshore platform that is provided with the bottom, in order to carry out the oil well operation then.
The advantage of the travelling performance of the facility that provides on the self lift type rig has been provided best in the consideration of this design, after boring is finished rig is removed, and exploitation is no longer disposed the time during the production phase, only temporarily holes and restarts operation.Sizable investment is re-deployed to the self lift type rig another location man-hour as quickly as possible and obtains the optimization use by operate when these in boring, completion and the equipment that goes into operation again.Therefore, the completion of the water surface of production does not comprise self lift type rig itself.The advantage of the water surface completion that can use the small-scale structure of a kind of being called " well jacket " to provide to have self lift type rig convenience with the self lift type rig.But the coupling of well jacket and self lift type drilling well is limited to shallow water and disposes.Secondly, the real limit restriction of contraction type strut length has more directly limited the degree of depth that can dispose the self lift type rig routinely.
The requirement of deepwater work the most often is subjected to continuing to use the response of the conventional platform structure that is provided with the bottom.The oil well path that the end face facility is provided convenience to production operation.But this kind structure must be exclusively used in the very major part of its structural strength supporting drilling well facility, and these drilling well facilities only require quite short period in the whole operation life-span at platform when the oil gas of producing oil gas-bearing formation.Secondly, when these boring facilities were in place, this structure must be able to be born maximum design environmental conditions, the hurricane standard of design.
Certainly, mining operations causes the consumption of hydrocarbon oil-gas Layer, and platform can be lost its serviceability at the three unities sooner or later.Yet the well jacket that forms the tower on support platform deck structurally may be firm, and has very long useful life longevity.But fishing is very difficult, and another restriction of conventional well jacket is that their design specialized is in a given depth of water.This causes the tendency of the chance that restriction basically redeploys.
Propose some and be designed for a self lift type rig structural under water " repeatedly " deployment, but these designs make many restrictions of every kind of structure produce a kind of result, though it has increased the depth of water that is used for the self lift type rig exactly, kept the summation of the restriction of its building block in others.
Proposed a kind of new platform notion recently, this platform notion combines the advantage of the platform structure that is provided with the bottom of self lift type rig and routine, and does not introduce its shortcoming.Such as, a kind of " Hyjack " platform has been proposed, this platform is in conjunction with a small-size water surface tower and a sizable jacket base that is enough to support production operation, and the latter supports this water surface tower and temporarily supports a self lift type rig that is used for drillng operation.After boring, this self lift type rig is removed, and this small-size water surface tower is supported production operation.This is obtaining more detailed description by people such as Dale M.Gallaher in the U.S. Patent application book 08/129,820 " offshore platform structure and system " of submit applications on September 30th, 1993.By people such as George E.Sgonros in the U.S. Patent application book 08/129 of submit applications on September 30th, 1993, in 829 " guide pipe on offshore platform that can reuse " other characteristics of advantageously salvaging and redeploying have been described more fully, particularly with the combining of above-mentioned platform notion.The sufficient disclosure of each of these applications for patent is incorporated herein by reference and as the part of this paper.
Above-mentioned salvaging and the measure that redeploys allow to use pipe casing for the second time and do not need dry dock or expensive and complicated operation on the sea.But this offshore platform structure is still more restricted aspect its degree of depth that can redeploy.This be because around the scope restriction that is subjected to the degree of depth of rig abutment face under water and settles the water surface tower height degree that clearance limited that derrick requires for the cantilevered deck.First kind in these two kinds of restrictions relates to main structure member.But second kind of restriction only limits to following aspect, promptly has the complexity of operation on the sea now, and offshore platform structure is pulled into dry dock or floating drydock is transported to the expensive and inconvenient of offshore platform place.
When platform was used to darker gradually waters, its dynamic response may become bigger design consideration, because the conventional platform that is provided with the bottom becomes suitable insecure for wind, wave and current.But dynamic response becomes the center Consideration of Follow-up tower, and flexibility is a critical designing requirement under the sort of occasion.The Follow-up tower is designed in a controlled manner " providing " response rather than intimate these power of resisting rigidly to dynamics environment load.
The basic demand of controlling this response is to produce a kind of structure with harmonic frequency or free period, the frequency that this structure can avoid those occurring in natures to run into.The gross weight at jacket base top place is to determine one of the control variables of the free period of structure.Hyjack platform notion is represented a kind of unique challenges to the adaptation of compliant tower, and this is because a kind of platform must be this there to be or not exist the extensive different design point of self lift type rig in the temporal adaptation of considering.
Yet, still need to adapt to economically even strengthen the convenience of self lift type rig operation in water surface completion and the deep water and the advantage of economy in some cases.
According to the present invention, a kind of offshore platform structure is provided, be used for the temporary transient oil well operation of using a self lift type rig for the deep water purposes, it comprises: a jacket base that is provided with the bottom, one by this jacket base support and stretch out water surface tower on the sea, Platform Deck by the supporting of water surface tower, one that provide at place, the top of jacket base and be suitable for supporting the under water rig abutment face of self lift type rig for the oil well operation, and at least one is connected rig supporting buoyancy can on the rig abutment face.
An advantage of the invention is that it also reduces to produce the permanent structure that life period is exclusively used in the limited needs of supporting drillng operation at platform as far as possible.Another advantage of some embodiments of the present invention is if the rig proof of initial design supposition can not be utilized, so just can provide a chance to connect a mounted Hyjack platform and accept wider general self lift type rig touchdown point.
With reference to the following detailed description of the preferred embodiment, will understand above-mentioned concise and to the point narration and other purpose of the present invention and advantage more fully in conjunction with the accompanying drawings, in the accompanying drawing:
Fig. 1 is the lateral view of the offshore platform structure of a kind of deployment of illustration;
Fig. 2 is the top view along the heavy pad of rig of Fig. 1 center line 2-2 intercepting;
Fig. 3 is the sectional view along Fig. 1 offshore platform structure of Fig. 1 center line 3-3 intercepting;
Fig. 4 is the top perspective as the heavy pad of disposing among Fig. 1 of a kind of rig;
Fig. 5 is the bottom perspective view of the heavy pad of rig of Fig. 4;
Fig. 6 is the lateral view of the heavy pad of rigging up;
Fig. 7 is the lateral view at the self lift type rig of the offshore platform structure deploy of the heavy pad of a band rig;
Fig. 8 is partial cross section figure along the embodiment of the heavy pad locking connector of Fig. 9 center line 8-8 intercepting of illustration;
Fig. 9 is the lateral view of the self lift type rig of platform structure deploy at sea;
Figure 10 is the lateral view of embodiment of the Follow-up tower of deployment self lift type rig of the present invention;
Figure 11 A-11D salvages offshore platform structure and it is re-deployed to lateral view in the different depth of waters;
Figure 12 A is a kind of top view of alternate embodiment of rig supporting buoyancy can;
Figure 12 B is the lateral view of the rig supporting buoyancy can of Figure 12 A.
Among Fig. 1, the rig supporting buoyancy can 110 of the heavy pad of rig 110A form is used to be equilibrated at the weight of the self lift type rig 34 of jacket base 12 deploy that are provided with the bottom.In this diagrammatic sketch, self lift type rig 34 illustrates with its initial mode.
Offshore platform structure 10 has an abutment face of rig under water 26 that is positioned at jacket base 12 tops that are provided with the bottom, and jacket base 12 has the framework 16 of column 14 and pillar 18.On seabed 24, a plurality of pipe casings 20 of stake 22 usefulness are fastened on the jacket base jacket base with stake 22 nails.
Fig. 2,4,5,8 is the heavy pad of illustration rig 110A in more detail.The top of the heavy pad of Fig. 2 and 4 illustration rigs, this heavy pad provides second level abutment face 138 under water on tank component 112 tops.The second level guide pile bucket of abutment face 138 under water is positioned at pin 36 places of bearing self lift type rig 34.The bottom of tank component 112 provides casing rack base interface 114 (see figure 5)s, and the latter is corresponding to the guide pile bucket 38 of the abutment face of rig under water that provides on the top of casing rack base.Referring to Fig. 3.
The heavy pad of rig 110A have one optionally floating and can press heavy tank component 112, in that jacket bottom interface 114 (see figure 5)s are arranged on the soffit second level rig abutment face 39 (see figure 4)s are under water arranged on upper surface.Inner structural members is with load support relation linkage interface 114 and 39.Preferably, load vertical transmission between the contact point of discrete aligning.But, if desired, can make a kind of heavy pad of rig that has such structural framing, this structural framing is suitable for non-direct vertically aligned mode distribute loads between casing rack base and self lift type rig.Therefore, can adopt the heavy pad of rig 110A, can use its touchdown point to be different from the self lift type rig of initial design supposition when having made with convenient casing rack base 12 as adapter.
Casing rack base interface 114 and the second level different touchdown points in the rig abutment face 39 under water are one of characteristics that illustrate among the alternate embodiment 110C of the heavy pad of illustrative rig among Figure 12 A and Figure 12 B.Here single tank component 112 is interconnected by external structure part or framework 111.The inside of tank component preferably is separated into the cabin.These cabins can connect some valves, these valves are compared with only providing air line that bigger control can be provided, and a valve is located at the bottom, are used for flowing away when air enters Shi Rangshui, another valve is located at the top, is used for discharging when allowing ballast to enter by the bottom air.Provide extra control to provide flexibility to control buoyancy by valve and cabin along with use compressibilty and incompressible fluid by the pressure condition of certain limit.This can limit the dischargeable capacity that inflow gas can expand into, and for example the platform of discussing below as Figure 11 A-11D raises operating period.Otherwise when tank component raises and pressure when reducing, the volume of gas will increase in the tank component.The expanding volume of gas arranges more water, increases the buoyancy of platform, makes platform raise sooner, or the like.
The installation of the heavy pad of Fig. 6-9 illustration rig 110A and the deployment of self lift type rig 34.In Fig. 6, the heavy pad of rig 110A part ballasting is filled enough water so that it is less than neutral buoyancy.Drop to the top of the contiguous sea tower 28 of casing rack base 12 then by crane ship 116, engagement has the casing rack base interface of coarse abutment face, bring the pin 36A at casing rack base interface 114 into guide pile bucket 38, the latter is provided with a plurality of heavy pad locking connectors 140.Because these connectors will be lower than the wave zone, but be positioned at the depth bounds of self lift type rig, thus can use the positive control locking device of any number, comprise that hydraulic control, ROV (remote-controlled vehicle) are handled or or even the diver drive.
Heavy pad of this kind that the heavy pad of rig 110A is fixed on the casing rack base 12 of Fig. 8 illustration locks connector.Herein casing rack base interface 114 provide one from marginate pin 36A stretch out fixed sell 37.The guide pile bucket is taked the form of steel lattice structural member 38D, and it can be coated with rubber or other cushion 38D.The container 38E that lands that spring is housed protrudes upward from the center of network part.Spring 144 is shown herein, and its cathodic protection for clarity sake has been omitted.Also can substitute and use other spring system as using elastomer member or damper system.When mounted, pin 37 is imported in the groove 146 of the container 38E that lands in casing rack base interface 114 fixed, when length of spring compressed and marginate pin 36A are placed on the network part column 34 of self lift type rig 34, during this recess 146 little by little loads and decides.Hydraulically powered clamp arm 41 is unfolded and meshes the edge of pin 36A, thereby the heavy pad of rig is fastened on the casing rack base, floats with the self lift type rig enhanced stability when in place with the heavy pad of convenient rig.
In Fig. 7, self lift type rig 34 has floated over the position that enters contiguous water surface tower 28 on the hull 52 and second level rig abutment face 39 that column 50 exists on the upper surface of tank component 112 descends.Derrick 56 returns on the cantilevered deck 58 so that carry out this close operation.An air compressor or other high pressurized gas are provided on self lift type rig 34 easily, and the latter is connected on the heavy pad of the rig 110A by conduit or airline 118.There are ballasting chamber and valve system 116 in the inside of tank component 112, and ballasting is indoor to be pumped into air or another kind of gas and float being used to, and can pump into gas and get rid of the seawater of emitting by valve system 116.Before will determine self lift type rig 34 is being installed to the temporary transient loading of casing rack base 12, balance to rig between temporary transient loading, design standard and the failure conditions of heavy pad locking connector 140, during and the heavy 110A of pad of rig is floated.
Rise column 50 again and make rig interface 39 under water, the pin 36 contact second level, can expect can disengageably be locked on this interface by the pin 36 of rig locking connector 120 (see figure 9)s with the self lift type rig, the structure of rig locking connector 120 is identical with illustrative heavy pad locking connector among Fig. 8 with operation.Rising column 50 again makes the hull 52 emersion waters surface and is raised to desired podium level.On this height, the Platform Deck 32 of water surface tower 28 will be crossed in cantilevered deck 58, and derrick 56 can be in place and by conduit 40 beginning drill-well operations.
After drill-well operation is finished, can be by opposite with installation steps basically step dismounting self lift type rig 34.By optionally allowing seawater to enter tank component 112 and air leaves tank component 112, the heavy pad of rig 110A can be pressed and sink to neutral basically buoyancy.Unless be used to control the dynamic response of discussing below, otherwise can remove the heavy pad of rig this moment with crane ship.
Another embodiment of a kind of rig supporting of Figure 10 and 11A-11D illustration buoyancy can 110 is a plurality of vertical orientated elongated circle tube tank parts 110B herein.These elongated tank components are installed on a plurality of height of framework 16 of jacket base 12, with the discrete contact point perpendicular alignmnet in the rig interface 38 under water.
Figure 10 is a kind of Follow-up tower of illustration embodiment simultaneously.Though for have concerning deep water fix or the common platform that is provided with the bottom of the tower structure of rigidity dynamic response be a kind of, consider that dynamic response becomes neutral more consideration for the Follow-up tower.The Follow-up tower is designed in a controlled manner " providing " to the response of dynamics environment load rather than almost resist these power rigidly.The basic demand of controlling this response is to produce a kind of structure with harmonic frequency or free period, and this structure has been avoided the frequency that runs at occurring in nature.Herein, jacket base 12 has parallel column 14, to strengthen its flexibility.For clarity sake, saved the mid portion of the jacket base of this length among Figure 10.
Top place is to determine one of the control variables of the free period of this structure to the gross weight of jacket base.Therefore, the offshore platform structure 10 that has a self lift type rig 34 in place is one of conditions that must adapt to.But, design weight both of these case that a kind of offshore platform adapts to its scope with suitable broadness to exist and do not exist the self lift type rig and may be quite difficulty.Also be difficult to simultaneously to find two scopes of separating of avoiding the natural harmonic wave of structure to adapt to drilling operation and self lift type rig the production operation both of these case remove after of self lift type rig when in place.
Use when the self lift type rig is removed that can to press heavy tank component 110 to press heavy, the weight range that must adapt to is narrowed down significantly.This can press heavy rig supporting buoyancy can 110 to provide easily by having alleviated the same of self lift type rig weight load.Though can dispose the heavy pad of rig 110A, when existing or not having the self lift type rig,, adapt to by elongated columnar vertical orientated tank component 110B herein to the lasting needs of tank component.If between drilling well or other oil well operational period, be used to provide buoyancy to support the weight of balance self lift type rig 34, when removing the self lift type rig, can substitute this buoyancy reserve so, thereby substitute the weight of self lift type rig basically with seawater.Secondly, because these jars sink,, this weight do not introduce its corresponding weight in system so being coupled with.This makes and can be avoided actual (narrow) window of nature harmonic response to design to one.
Figure 11 A-11D illustration is a kind of to redeploy the method that offshore platform structure is used from one the first second different place of place to a depth of water.To this purpose, the selectivity at place, the top of casing rack base 12 is floated and can be pressed heavy tank component 110 is very useful.
Application for patent S.N.08/129 discussed above, 829 disclose the use of classification pipe casing 20, and this classification pipe casing 20 has a first order of stretching out 60 above the second level 62.In initial deployment, these are locked on the pipe casing in the first order.Then, when regaining and reusing, this first order sleeve pipe can (for example) cut by the remote-controlled vehicle operation.Referring to the remote-controlled vehicle among Figure 11 A 122.Be breaking at the top that inside makes a first order sleeve pipe 60 that is connected with sleeve pipe and stake wherein, platform is thrown off in the connection of pegging in seabed 24 from it.For disengagement collar frame base, the stake of breaking-up may also need be cut off below the sleeve pipe of stake.
Forward Figure 11 B to, float and can press the air replacement water of heavy tank component 110B with pumping into selectivity then.On crane ship 116, can supply a suitable air pump.Equally, also can pump air in one or more columns 14 of jacket base 12, these columns 14 form with hollow pipe fitting usually.Provide this kind buoyancy can help to have the jacket base of four side cross-section by bight to supporting water surface tower 28.From the common additional buoyancy the jacket column or can be favourable to other jacket by the auxiliary buoyancy that provides.But, most of buoyancy is to provide at the place, top of jacket base, and the jacket base is raised off the seabed and towards the water surface 30, and the jacket base that vertically floats there has enough stability and carries out the marine manufacturing operation supported by crane ship 116.Remove water surface tower 28 all or part of (referring to Figure 11 C), the water surface tower 28A of a resizing is installed.Referring to Figure 11 D.The marked difference that therefore, in the offshore operations that only relates to water surface tower, can adapt to the depth of water.The flexibility that this kind operation provides convenience for the jacket base, this flexibility increase it significantly by being convenient to reset water surface Sopwith staff and cun correctly adapting to the depth of water and matching with the derrick that utilizes the cantilevered deck to install and reuse performance on the self lift type rig.
Then the jacket base of reworking is drawn to a new place and redeploys, it is heavy that tank component 110 and column 14 are pressed.Then base is followed closely on seabed 24 by stake 22, stake 22 is locked in the pipe casing 20 at locking section bar 62 places, the second level securely.For long hauling distance, preferably provide buoyancy aid to supply water square to reorientating with the platform that fell.In new place, forward it to upright position and place.
Also be predetermined to include other modification, variation and replacement in the above-mentioned disclosure.Secondly, in some cases, will utilize some characteristic of the present invention and correspondingly do not utilize other characteristics of describing in these illustrated embodiment.Therefore, explain widely that in the mode consistent the appended claims are suitable with the spirit and scope of the present invention.
Claims (14)
1. offshore platform structure, be used for the temporary transient oil well operation of using a self lift type rig for the deep water purposes, it comprise a jacket base, that is provided with the bottom by this jacket base support and stretch out water surface tower on the sea, Platform Deck by the supporting of water surface tower, place, top at the jacket base provides and be suitable for supporting the under water rig abutment face of self lift type rig for the oil well operation, and at least one is connected rig supporting buoyancy can on the rig abutment face.
2. offshore platform structure according to claim 1, it is characterized in that, this rig supporting buoyancy can is the heavy pad of a rig, the jacket base interface that a selectivity is floated and can be pressed heavy tank component, one to provide on the tank component bottom on the rig abutment face that is connected on the jacket base top is provided, and second level that on the tank component top, provides rig abutment face under water, the latter and jacket base interface interconnect with the load support relation, and are suitable for bearing the self lift type rig.
3. offshore platform structure according to claim 1 and 2, also comprise a heavy pad locking connector between rig supporting member and the jacket base interface under water, so that can disengageably be fixed on the heavy pad of rig on the jacket base, also comprise one at self lift type rig and the second level locking of the rig between the rig supporting member under water connector, go up and be fixed on the jacket base by it so that the self lift type rig can disengageably be fixed on the heavy pad of rig.
4. offshore platform structure according to claim 3, it is characterized in that, connector between rig supporting member and the jacket base interface comprises the outwardly directed marginate pin of the downward arrangement at a plurality of formation jacket bases interface under water, a guide finger that stretches out downwards from this marginate pin, a plurality of formation are rig supporting member and the steel lattice structure of holding with the load support relation this marginate pin is set under water, a plurality of being provided with in the steel lattice structure are held the central channel of the guide finger that stretches out from marginate pin, and a plurality of hydraulically powered clamp arms, these clamp arms are installed under water on the rig interface and are arranged to the marginate pin at fixed cover pipe support base interface disengageably.
5. an offshore platform structure according to claim 4 is characterized in that, the heavy pad of this rig can be removed.
6. offshore platform structure according to claim 2, it is characterized in that, under water the rig supporting member and the second level under water the rig abutment face each comprise a plurality of discrete contact points, and these respectively discrete contact points of each group aspect vertical collimation and relevant not exclusively mutually.
7. one kind according to any one described offshore platform structure among the claim 1-6, it is characterized in that, a plurality of rig supporting buoyancy can are provided, wherein this comprises a plurality of discrete contact points corresponding to self lift type rig touchdown point in rig interface under water, and each jar directly forms a vertical orientated elongated tank component with the load support relation below the discrete contact point at rig interface under water.
8. offshore platform structure according to claim 1, it is characterized in that, the described abutment face of rig under water comprises a plurality of discrete contact points corresponding to self lift type rig touchdown point, wherein this rig supporting buoyancy can comprises a plurality of vertical orientated elongated circle tube tank parts, each is located substantially on the load support relation below the discrete contact point at rig interface under water, and is connected on the jacket base at a plurality of frame height place.
9. one kind according to any one described offshore platform structure among the claim 1-8, it is characterized in that, this jacket base that is provided with the bottom forms the jacket base of a servo-actuated, the weight of the self lift type rig that is designed for and is meshed produces dynamic response, thus, the weight of this self lift type rig is offset by the buoyancy that rig supporting buoyancy can is supplied with basically when the self lift type rig is arranged on the jacket base, and when the self lift type rig is removed by adding entry as the ballast in the rig supporting buoyancy can and replaced the weight of self lift type rig in the offshore platform structure basically, thereby during the production operation that does not need to exist the self lift type rig to making contributions the harmonic period of avoiding compliant tower.
10. method that is used for redeploying to second place offshore platform structure described in claim 8 from first place, comprise the connection of throwing off between jacket base and the stake of a plurality of anchor in seabed, first place, described disengagement operation comprises that the stake of cutting a plurality of pipe casings and wherein locking is connected with a sleeve pipe to stake that disconnects in the first order pipe casing that extends, by pumping air into the vertical rising offshore platform structure of tank component, offshore platform structure is dragged to second place, by this offshore platform structure that vertically descends of the ballasting to tank component, platform is installed in second place, makes water surface tower side and the rig abutment face is presented in the degree of depth possible range of self lift type rig across the sea.
11. method that is used to redeploy offshore platform structure according to claim 10, it is characterized in that, this under water the jacket base four lateral cross-section with four root posts are arranged, in described four root posts three every provides direct supporting to a discrete contact point, the 4th root post provides main supporting to water surface tower, and this method also is included in provides buoyancy aid below the water surface tower.
12. one kind according to claim 10 or the 11 described methods that are used to redeploy offshore platform structure, it is characterized in that the offshore platform structure that vertically raises also comprises the jacket base under water that raises, and are positioned at the top, sea up to the base of water surface tower.
13. one kind according to any one described method that is used to redeploy offshore platform structure among the claim 10-12, also comprise the size that resets water surface tower, way is to remove old water surface tower and a new water surface tower is installed under water on the jacket base from jacket base under water.
14. method that is used to redeploy offshore platform structure according to claim 13, it is characterized in that, the size that resets water surface tower comprises from water surface tower removes the deck, shortens water surface tower and another deck is installed on the top of water surface tower of this shortening.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/370,767 US5741089A (en) | 1994-12-23 | 1994-12-23 | Method for enhanced redeployability of hyjack platforms |
| US08/370,763 US5551801A (en) | 1994-12-23 | 1994-12-23 | Hyjack platform with compensated dynamic response |
| US08/370,767 | 1994-12-23 | ||
| US08/370,764 | 1994-12-23 | ||
| US08/370,764 US5593250A (en) | 1994-12-23 | 1994-12-23 | Hyjack platform with buoyant rig supplemental support |
| US08/370,763 | 1994-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1174584A true CN1174584A (en) | 1998-02-25 |
Family
ID=27408988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95197507 Pending CN1174584A (en) | 1994-12-23 | 1995-12-22 | Offshore platform with buoyant rig supplemental support |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0799352A1 (en) |
| JP (1) | JPH10511753A (en) |
| CN (1) | CN1174584A (en) |
| AR (1) | AR000525A1 (en) |
| AU (1) | AU683596B2 (en) |
| NO (1) | NO972871L (en) |
| OA (1) | OA10432A (en) |
| WO (1) | WO1996020313A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346572B (en) * | 2005-12-21 | 2011-05-18 | Itrec有限责任公司 | Offshore system |
| CN103119222A (en) * | 2010-07-05 | 2013-05-22 | 船舶通用涡轮有限公司 | Surface-breaking re-usable submergeable template for installing one or more submerged columns/piles |
| CN104321488A (en) * | 2012-03-24 | 2015-01-28 | Owlc控股有限公司 | Structures for offshore installations |
| CN104452717A (en) * | 2014-10-29 | 2015-03-25 | 上海大学 | Self-lifting type marine drilling platform lifting device and method |
| CN114313126A (en) * | 2022-01-13 | 2022-04-12 | 东北石油大学 | Fabricated FRP concrete combined guyed tower type platform system and construction method thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT2727813T (en) * | 2008-04-23 | 2017-10-26 | Principle Power Inc | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
| DK2508677T3 (en) * | 2009-12-02 | 2016-08-29 | Nippon Steel & Sumitomo Metal Corp | UNDERWATER STRUCTURE AND CONSTRUCTION PROCEDURE |
| JP5961887B2 (en) * | 2011-01-28 | 2016-08-03 | エクソンモービル アップストリーム リサーチ カンパニー | Submarine production system, method of installing components for submarine production system in marine environment, and method of moving floating drilling unit from marine location in marine environment |
| WO2013027870A1 (en) * | 2011-08-22 | 2013-02-28 | 에스티엑스(대련)해양중공유한회사 | Method for constructing jackup rig without use of crane |
| EP2623674A1 (en) | 2012-02-03 | 2013-08-07 | Nordic Yards Holding GmbH | Substructure for an offshore platform and method for installing same |
| TR201808860T4 (en) | 2013-05-20 | 2018-07-23 | Principle Power Inc | System and method for controlling offshore wind turbine platforms. |
| KR101434580B1 (en) * | 2013-07-11 | 2014-08-27 | 삼성중공업 주식회사 | Hybrid jack-up drilling and production system |
| PL3566941T3 (en) | 2014-10-27 | 2022-01-17 | Principle Power, Inc. | Connection system for array cables of disconnectable offshore energy devices |
| PT3310647T (en) | 2015-06-19 | 2021-04-20 | Principle Power Inc | Floating wind turbine platform structure with optimized transfer of wave and wind loads |
| WO2018162988A2 (en) | 2017-03-10 | 2018-09-13 | Cellula Robotics, Ltd. | Drilling devices and methods of operating the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3031997A (en) * | 1957-04-30 | 1962-05-01 | William A Nesbitt | Floating platform |
| FR2362975A1 (en) * | 1976-08-26 | 1978-03-24 | Riou Jean | Marine oil rig with separate submerged substructure - has superstructure floated over and attached via axially displacing legs |
| US4723875A (en) * | 1987-02-13 | 1988-02-09 | Sutton John R | Deep water support assembly for a jack-up type platform |
| US4902169A (en) * | 1989-05-17 | 1990-02-20 | Sutton John R | Jack-up type platform including adjustable stop assembly |
-
1995
- 1995-12-22 CN CN 95197507 patent/CN1174584A/en active Pending
- 1995-12-22 WO PCT/EP1995/005162 patent/WO1996020313A1/en not_active Application Discontinuation
- 1995-12-22 JP JP8520219A patent/JPH10511753A/en active Pending
- 1995-12-22 EP EP95943228A patent/EP0799352A1/en not_active Ceased
- 1995-12-22 AU AU44356/96A patent/AU683596B2/en not_active Expired - Fee Related
- 1995-12-22 AR AR33477195A patent/AR000525A1/en unknown
-
1997
- 1997-06-20 NO NO972871A patent/NO972871L/en unknown
- 1997-06-23 OA OA70035A patent/OA10432A/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346572B (en) * | 2005-12-21 | 2011-05-18 | Itrec有限责任公司 | Offshore system |
| CN103119222A (en) * | 2010-07-05 | 2013-05-22 | 船舶通用涡轮有限公司 | Surface-breaking re-usable submergeable template for installing one or more submerged columns/piles |
| CN104321488A (en) * | 2012-03-24 | 2015-01-28 | Owlc控股有限公司 | Structures for offshore installations |
| US9771700B2 (en) | 2012-03-24 | 2017-09-26 | Owlc Holdings Ltd. | Structures for offshore installations |
| CN104452717A (en) * | 2014-10-29 | 2015-03-25 | 上海大学 | Self-lifting type marine drilling platform lifting device and method |
| CN114313126A (en) * | 2022-01-13 | 2022-04-12 | 东北石油大学 | Fabricated FRP concrete combined guyed tower type platform system and construction method thereof |
| CN114313126B (en) * | 2022-01-13 | 2024-04-19 | 东北石油大学 | Assembled FRP concrete combined guy cable tower platform system and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU683596B2 (en) | 1997-11-13 |
| EP0799352A1 (en) | 1997-10-08 |
| OA10432A (en) | 2001-12-07 |
| WO1996020313A1 (en) | 1996-07-04 |
| MX9704642A (en) | 1997-09-30 |
| AR000525A1 (en) | 1997-07-10 |
| JPH10511753A (en) | 1998-11-10 |
| AU4435696A (en) | 1996-07-19 |
| NO972871D0 (en) | 1997-06-20 |
| NO972871L (en) | 1997-08-12 |
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