NO752961L - - Google Patents
Info
- Publication number
- NO752961L NO752961L NO752961A NO752961A NO752961L NO 752961 L NO752961 L NO 752961L NO 752961 A NO752961 A NO 752961A NO 752961 A NO752961 A NO 752961A NO 752961 L NO752961 L NO 752961L
- Authority
- NO
- Norway
- Prior art keywords
- work platform
- floating body
- floating
- platform according
- support system
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0086—Large footings connecting several legs or serving as a reservoir for the storage of oil or gas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Foundations (AREA)
Abstract
Flytedyktig, trinnløst innstillbar arbeidsplattform for boring på store vanndyp.Floating, steplessly adjustable work platform for drilling at great water depths.
Description
Oppfinnelsen vedrører en flytedyktig, trinnløst innstillbar arbeidsplattform for boring på store vanndyp, særlig på dyp større enn 100 m. The invention relates to a buoyant, continuously adjustable work platform for drilling at great water depths, particularly at depths greater than 100 m.
Det er kjent arbeidsplattformer, f. eks. Offshore-plattformer, hvis fundamentlegeme med underbygg slepes til anvendelsesstedet og etter senkingen at monteringen foretas ved hjelp av flytekraner. Disse plattformer er egnet for dyp opptil 50 m (forskningsplattformen Nordsee). There are known work platforms, e.g. Offshore platforms, whose foundation body with substructure is towed to the place of use and after lowering that assembly is carried out using floating cranes. These platforms are suitable for depths up to 50 m (Nordsee research platform).
Det er også kjent arbeidsplattformer som på et støtte-system bærer flere innstillbare flytelegemer. Også denne kon-struksjonsmåte er ved oppbygging på anvendelsesstedet henvist til flytekraner og kan bare benyttes på små vanndybder. There are also known work platforms which carry several adjustable floating bodies on a support system. This construction method is also referred to floating cranes when built up at the site of use and can only be used in small water depths.
Det er også kjent en flytende innretning for boring som omfatter et hele tiden nedsenket flytelegeme over hvilket det er anordnet en plattform som etter å ha nådd boringsstedet A floating device for drilling is also known which comprises a permanently submerged floating body above which a platform is arranged which, after reaching the drilling site
■ heves på søyler eller rørsegmenter til den er hevet fullstendig ut av vannet, mens flytelegemet og rørene forblir i flytende tilstand. ■ is raised on columns or pipe segments until it is raised completely out of the water, while the floating body and pipes remain in a liquid state.
Den oppgave som ligger til grunn for oppfinnelsen erThe task underlying the invention is
å tilveiebringe en flytedyktig, trinnløst innstillbar arbeidsplattform for store vanndyp som delvis kan monteres på land og ferdigmonteres på grunt vann. to provide a buoyant, continuously adjustable working platform for large water depths that can be partially assembled on land and fully assembled in shallow water.
Til løsning av denne oppgave er det ifølge oppfinnelsen foreslått en arbeidsplattform som er kjennetegnet ved en bunnplate, et nedre flytelegeme, et øvre flytelegeme og en flytedyktig arbeidsplattform, som er høydeinnstillbart forbundet med hverandre ved jjgelp av to adskilt anordnede støttesystemer. De to flytelegemer kan fylles og tømmes uavhengig av hverandre. Det ytre støttesystem er fast forbundet med bunnplaten og utstrekk-ende seg gjennom, det nedre flytelegeme forbundet med det bevege lig anordnede flytelegeme. Det indre støttesystem er fast forbundet med det nedre flytelegeme og er forbundet med den bevegelig anordnede arbeidsplattform gjennom det øvre flytelegeme. Begge flytelegemer er festbare til de enkelte støttesystemer. Arbeidsplattformen er fastgjørbar til det indre støttesystem. To solve this task, according to the invention, a working platform is proposed which is characterized by a bottom plate, a lower floating body, an upper floating body and a floating working platform, which is height-adjustable and connected to each other by means of two separately arranged support systems. The two floating bodies can be filled and emptied independently of each other. The outer support system is fixedly connected to the bottom plate and extending through, the lower floating body connected to the movably arranged floating body. The inner support system is fixedly connected to the lower floating body and is connected to the movable working platform through the upper floating body. Both floating bodies can be attached to the individual support systems. The work platform can be attached to the internal support system.
Det øvre flytelegeme kan bestå av en ytre ring som er avstivetThe upper floating body may consist of an outer ring which is stiffened
i det indre på kjent måte. Begge flytelegemer og arbeidsplattformen er utstyrt med mekaniske hjelpemidler for styring av de enkelte støttesystemer. in the interior in a known manner. Both floating bodies and the work platform are equipped with mechanical aids for controlling the individual support systems.
I forhold til de kjente bærekonstruksjoner, henholdsvis Offshore-plattformer har løsningen ifølge oppfinnelsen den fordel at totalsystemet kan flyte med liten dybdegang, da de enkelte flytelegemer er anordnet over hverandre og bunnplaten kan innstilles på en ønsket høyde, dvs. også umiddelbart under flytelegemene. In relation to the known support structures, respectively Offshore platforms, the solution according to the invention has the advantage that the overall system can float with a small draft, as the individual floating bodies are arranged above each other and the bottom plate can be set to a desired height, i.e. also immediately below the floating bodies.
En forenklet montering ved hjelp av støttesystemene hvortil det f. eks. kan festes en kran og transporten i ferdig-montert tilstand er likeledes fordelaktig. Alt etter vanndybde består muligheten for senking av bunnplaten for stabilisering av flytestillingen. Senkingen, henholdsvis hevingen kan gjennom-føres hurtåg og ukomplisert. Ved hjelp av. de som føring tjenende støttesystemer er det mulig med en kontrollert senking. Regu--leringen av senkehastigheten skjer ved hjelp av med støttesyste-mene forbundne hjelpemidler, f. eks. tannlister, som over drev er forbundet med mekaniske reguleringsinnretninger av kjent type som befinner seg på flytelegemene. A simplified assembly using the support systems, for which e.g. a crane can be attached and the transport in a fully assembled state is also advantageous. Depending on the water depth, the bottom plate can be lowered to stabilize the floating position. The lowering or raising can be carried out quickly and uncomplicated. Using. the support systems serving as guides, it is possible with a controlled lowering. The regulation of the lowering speed takes place with the help of aids connected to the support systems, e.g. toothed strips, which are connected via drives to mechanical regulation devices of a known type which are located on the floating bodies.
Hevingen av arbeidsplattformen fra vannivå skjer ved heving av det nedre flytelegeme. Oppdriften i flytelegemene av-laster støttesystemene. Ved hjelp av føringen av støttesystemene i flytelegemene blir knekklengden for disse redusert, henholdsvis bæreevnen øket.. I høyde med vannivået gir støttesystemene på grunn av det relativt lille tverrsnitt bare liten motstand mot bølger og strømning. Den stabile biiinnplate gir en god stand-fasthet som kan forsterkes ved hjelp av egnede tilleggsvekter. The working platform is raised from the water level by raising the lower floating body. The buoyancy in the floating bodies relieves the support systems. With the help of guiding the support systems in the floating bodies, the buckling length for these is reduced, respectively the load-bearing capacity is increased.. Due to the relatively small cross-section, the support systems offer only little resistance to waves and flow at the height of the water level. The stable biinn plate provides a good stand stability which can be reinforced with the help of suitable additional weights.
Oppfinnelsen er i det følgende nærmere forklart ved hjelp av en muligr.utførelsesform som skjematisk er fremstilt på tegningen, som viser: The invention is explained in more detail in the following with the help of a possible embodiment which is shown schematically in the drawing, which shows:
fig. 1 monteringen på land,fig. 1 the assembly on land,
fig. 2 den hevede arbeidsplattform i transportanord-ningen, fig. 2 the raised work platform in the transport device,
fig. 3 fem faser ved senkingen og hevingen på anvendelsesstedet. fig. 3 five phases for lowering and raising at the point of use.
På fig. 1 finner monteringen sted på bunnplaten 4 med dertil festet indre støttesystem 5. Bevegelig, men fastgjørbart er det over hverandre anordnet de to flytelegemer 2 og 3- På det nedre flytelegeme 3 er det festet det ytre støttesystem 6, som ved føring gjennom det øvre flytelegeme 2 tjener som holde-innretning og tjener som føring over støttesystemet 5 for arbeidsplattformen 1.. In fig. 1, the assembly takes place on the bottom plate 4 with an internal support system 5 attached to it. The two floating bodies 2 and 3 are arranged above each other in a movable but fixable manner - On the lower floating body 3 the outer support system 6 is attached, which when guided through the upper floating body 2 serves as a holding device and serves as a guide over the support system 5 for the work platform 1..
På fig. 2 er det vist en mulig transportanordning for In fig. 2 shows a possible transport device for
arbeidsplattformen hvor bunnplaten 4 .er senket for stabilisering. the work platform where the bottom plate 4 is lowered for stabilization.
Virkemåten for oppbyggingen av arbeidsplattformen på store"vanndyp blir vist på fig. 3 i fem faser. The operation of the construction of the working platform at great water depths is shown in Fig. 3 in five phases.
Første fase:First phase:
Vekten til arbeidsplattformen 1 og vekten til bunnplaten 4 er mindre enn oppdriften for flytelegemet 3- Flytelegemet 2 bærer seg selv. The weight of the work platform 1 and the weight of the bottom plate 4 is less than the buoyancy of the floating body 3 - The floating body 2 supports itself.
Annen fase :Second phase:
Bunnplaten 4 blir senket idet den føres av støttesy-stemet 6. Endene til støttesystemet 6 blir festet til flytelegemet 2 . The bottom plate 4 is lowered as it is guided by the support system 6. The ends of the support system 6 are attached to the floating body 2.
Tredje fase:Third phase:
Flytelegemet 3 blir delvis fylt. Flytelegemene 2 og 3 samt bunnplaten 4 blir senket samtidig som det føres av støtte-systemet 6 til bunnplaten 4 legger seg mot bunnen. The floating body 3 is partially filled. The floating bodies 2 and 3 as well as the bottom plate 4 are lowered at the same time as it is guided by the support system 6 until the bottom plate 4 rests against the bottom.
Fjerde fase:Fourth phase:
Flytelegemet 2 fylles.. Flytelegemet. 3 blir likeledes fylt og senket ytterligere ført av støttesystemet 6. The floating body 2 is filled.. The floating body. 3 is likewise filled and further lowered guided by the support system 6.
Femte fase:Fifth phase:
Flytelegemet 3 blir pumpet tomt. På grunn av oppdriften blir arbeidsplattformen 1 hevet til den ønskede stilling.. I denne oppnådde sluttstilling blir flytelegemet 3 festet til støttesystemet 5 og flytelegemet 2 festet til støttesystemet 6. The floating body 3 is pumped empty. Because of the buoyancy, the work platform 1 is raised to the desired position. In this achieved final position, the floating body 3 is attached to the support system 5 and the floating body 2 is attached to the support system 6.
Støttesystemene kan også<y>ære motsatt anordnet. The support systems can also be oppositely arranged.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2442186A DE2442186A1 (en) | 1974-09-02 | 1974-09-02 | FLOATING, CONTINUOUSLY ADJUSTABLE WORK PLATFORM FOR DRILLING IN LARGE WATER DEPTHS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO752961L true NO752961L (en) | 1976-03-03 |
Family
ID=5924780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO752961A NO752961L (en) | 1974-09-02 | 1975-08-28 |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2442186A1 (en) |
| FR (1) | FR2283047A1 (en) |
| GB (1) | GB1517217A (en) |
| NL (1) | NL7510126A (en) |
| NO (1) | NO752961L (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266887A (en) * | 1977-06-10 | 1981-05-12 | Brown & Root, Inc. | Self-elevating fixed platform |
| US5803668A (en) * | 1993-12-17 | 1998-09-08 | Kajima Corporation | Method of constructing gravity-type marine structure and structure by same |
| GB2292167B (en) * | 1994-08-13 | 1998-05-06 | Brookmex Ltd | Self-installing shallow water platforms for offshore hydrocarbon production |
| RU2238365C1 (en) * | 2003-07-25 | 2004-10-20 | Мищевич Виктор Ильич | Method for constructing arctic platform |
| RU2307893C1 (en) * | 2006-01-25 | 2007-10-10 | Виктор Ильич Мищевич | Method for marine production complex erection |
| ITMI20112130A1 (en) * | 2011-11-23 | 2013-05-24 | Saipem Spa | SYSTEM AND METHOD TO PERFORM A DRIVING PROGRAM FOR UNDERWATER WELLS IN A BED OF A WATER BODY AND AN AUXILIARY FLOAT UNIT |
| DK2674532T3 (en) * | 2012-06-15 | 2014-06-16 | Aug Prien Bauunternehmung Gmbh & Co Kg | Method and system for founding an offshore structure |
-
1974
- 1974-09-02 DE DE2442186A patent/DE2442186A1/en active Pending
-
1975
- 1975-08-27 NL NL7510126A patent/NL7510126A/en not_active Application Discontinuation
- 1975-08-28 NO NO752961A patent/NO752961L/no unknown
- 1975-08-28 FR FR7526555A patent/FR2283047A1/en not_active Withdrawn
- 1975-09-01 GB GB35956/75A patent/GB1517217A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1517217A (en) | 1978-07-12 |
| NL7510126A (en) | 1976-03-04 |
| FR2283047A1 (en) | 1976-03-26 |
| DE2442186A1 (en) | 1976-03-11 |
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