NO860312L - BUILDING METHOD FOR PARTIAL SUBMISSIBLE RIGG. - Google Patents
BUILDING METHOD FOR PARTIAL SUBMISSIBLE RIGG.Info
- Publication number
- NO860312L NO860312L NO860312A NO860312A NO860312L NO 860312 L NO860312 L NO 860312L NO 860312 A NO860312 A NO 860312A NO 860312 A NO860312 A NO 860312A NO 860312 L NO860312 L NO 860312L
- Authority
- NO
- Norway
- Prior art keywords
- rig
- partially
- blocks
- built
- docks
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000010276 construction Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
-
- 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
- B63B35/34—Pontoons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
-
- 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
- B63C1/00—Dry-docking of vessels or flying-boats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Body Structure For Vehicles (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Earth Drilling (AREA)
Description
Foreliggende oppfinnelse vedrører en byggemetode for en delvis nedsenkbar rigg tilpasset for bruk i sjøen for å bore en olje-brønn eller lignende til havs. The present invention relates to a construction method for a partially submersible rig adapted for use in the sea to drill an oil well or the like at sea.
Delvis nedsenkbare rigger er blitt brukt tidligere for det formål å bore en oljebrønn i sjøbunnen og lignende. Denne type delvis nedsenkbare rigger består f.eks. av en konstruksjon som innbefatter et søyledekk eller lignende oppstilt på pongtonger. Denne delvis nedsenkbare rigg bygges ved først å bygge pongtonger, deretter montere søyler, støtter og et dekk på pongtongene, og montere en stor del av en boligplass, etc. på dekket, sjøsette og rigge til konstruksjonen. Bredden til den delvis nedsenkbare rigg er betraktelig stor og det er derfor tilfeller hvor den er større enn bredden til ordinære skips-dokker. I et slikt tilfelle, er forskjellige fremgangsmåter tenkelige hvor bl.a. en stor marin dokk nylig er bygd slik at en delvis nedsenkbar rigg som er oppbygd i to blokker i eksisterende dokker settes sammen i den store marine dokk for å bygge en delvis nedsenkbar rigg. En delvis nedsenkbar rigg som er bygd i to blokker i de eksisterende dokker slik at den nedsenkbare rigg blir flytende forflyttet av to delvis nedsenkede lektere og forbundet sammen og bygger slik den delvis nedsenkbare rigg eller alternativt bygges en delvis nedsenkbar rigg med sine pongtonger eller skaft holdt nær inntil hverandre i de eksisterende dokker, slik at etter at den delvis nedsenkede rigg har blitt sjøsatt for å bringes til havs, forflyttes pongtongene eller skaftene til sine normale posisjoner og støttende osv. tilpasses for således å ferdigstille den delvis nedsenkbare rigg. Partially submersible rigs have been used in the past for the purpose of drilling an oil well in the seabed and the like. This type of partially submersible rig consists, for example, of of a construction which includes a column deck or similar set up on pontoons. This partially submersible rig is built by first building pontoons, then mounting columns, supports and a deck on the pontoons, and mounting a large part of a living space, etc. on the deck, launching and rigging the structure. The width of the partially submersible rig is considerably large and there are therefore cases where it is greater than the width of ordinary ship docks. In such a case, different methods are conceivable where i.a. a large marine dock has recently been built so that a semi-submersible rig built in two blocks in existing docks is assembled in the large marine dock to build a semi-submersible rig. A partially submersible rig that is built in two blocks in the existing docks so that the submersible rig is moved afloat by two partially submerged barges and connected together and thus builds the partially submersible rig or alternatively a partially submersible rig is built with its pontoons or shafts held close together in the existing docks, so that after the partially submerged rig has been launched to be brought to sea, the pontoons or shafts are moved to their normal positions and the supports, etc., adjusted so as to complete the partially submerged rig.
Imidlertid har disse metoder de følgende ulemper. For å nybygge en stor dokk og sette sammen en delvis nedsenkbar rigg i store dokker krever en stor investering av utstyr. Det kreves også en stor utstyrsinvestering for først å bygge en stor marin dokk slik at en delvis nedsenkbar rigg kan bygges i to blokker i eksisterende dokker og de delvis nedsenkbare rigger bygd i to blokker knyttes sammen i den store marine dokk for derved å sammensette riggen. Metoden for å bygge en delvis nedsenkbar rigg i to blokker i eksisterende dokker, å flyte den delvis nedsenkbare rigg bygget i de to blokker med to delvis nedsenkede lektere og sammenkople blokkene på vannet og således sette sammen den nedsenkede rigg involverer teknisk uløste problemer med hensyn til teknikkene for undervannssveising på sjøen, operasjonen av å flytbart forflytte den delvis nedsenkede rigg med de to delvis nedsenkede lektere og kople dem sammen osv. Også byggemetoden for en delvis nedsenket rigg, med sine pongtonger eller søyler holdt nær inntil hverandre, i de eksisterende dokker, og sjøsette den delvis nedsenkbare rigg for å gå til havs, å bege pongtongene eller søylene til deres normale posisjoner og så- tilpasse støtter osv. for således å ferdigstille den delvis nedsenkede rigg involverer uløste problemer med hensyn til de krevede tilknyttede jigger, arbeidsteknikker, sikkerhet osv. However, these methods have the following disadvantages. To build a new large dock and assemble a partially submersible rig in large docks requires a large investment in equipment. A large equipment investment is also required to first build a large marine dock so that a partially submersible rig can be built in two blocks in existing docks and the partially submersible rigs built in two blocks are linked together in the large marine dock to thereby assemble the rig. The method of building a partially submersible rig in two blocks in existing docks, floating the partially submersible rig built in the two blocks with two partially submerged barges and connecting the blocks on the water and thus assembling the submerged rig involves technically unsolved problems with regard to the techniques of underwater welding at sea, the operation of fluidly moving the partially submerged rig with the two partially submerged barges and connecting them together, etc. Also the construction method of a partially submerged rig, with its pontoons or pillars held close together, in the existing docks, and launching the semi-submersible rig to go offshore, beveling the pontoons or columns to their normal positions and then adjusting supports, etc., so as to complete the semi-submersible rig involve unsolved problems with regard to the required associated jigs, work techniques, safety etc.
Det er et formål med oppfinnelsen å tilveiebringe en fremgangsmåte for å bygge en stor og bred delvis nedsenket rigg med en lav utstyrskostnad i løpet av en kort tidsperiode uten at det kreves en betydelig kostnadsstørrelse. For dette formål innbefatter en byggemetode for en delvis nedsenket rigg ifølge foreliggende oppfinnelse å bygge en delvis nedsenket rigg i to på tvers avdelte blokker'i de eksisterende dokker, å sjøsette blokkene separat, så dokksette blokkene i en parallell grøft hvor det kan monteres deri babord og styrbord pongtonger henholdsvis, å tørrdokksette den samme og så forbinde den fremre og bakre blokk og derved ferdigstille den delvis nedsenkede rigg. I samsvar med oppfinnelsen, blir en delvis nedsenket rigg som skal bygges avdelt i tverretningen i fremre og bakre partier og bygd i eksisterende dokker innbefattende effektivt utstyr og arrangementer og derfor er det mulig å redusere an-tallet av arbeidstrinn og dermed arbeidsbetingelsene. I samsvar med oppfinnelsen forbindes blokkene med hverandre i den parallelle grøft som er lav i byggeutstyrskostnader og dermed gis effekten av å ikke involvere tekniske vanskeligheter og bidrar vesentlig til å redusere riggens byggekostnader og for-bedre den operasjonelle sikkerhet. It is an object of the invention to provide a method for building a large and wide partially submerged rig with a low equipment cost during a short period of time without requiring a significant amount of cost. To this end, a construction method for a partially submerged rig according to the present invention includes building a partially submerged rig in two transversely separated blocks' in the existing docks, launching the blocks separately, then docking the blocks in a parallel trench where it can be installed on the port side and starboard pontoons respectively, to dry dock the same and then connect the fore and aft blocks and thereby complete the partially submerged rig. In accordance with the invention, a partially submerged rig to be built is divided in the transverse direction into front and rear parts and built in existing docks including efficient equipment and arrangements and therefore it is possible to reduce the number of working steps and thus the working conditions. In accordance with the invention, the blocks are connected to each other in the parallel trench which is low in construction equipment costs and thus gives the effect of not involving technical difficulties and contributes significantly to reducing the rig's construction costs and improving operational safety.
Fig. 1 er en planskisse som viser et eksempel av en parallell-grøft i samsvar med den foreliggende oppfinnelse, Fig. 1 is a plan view showing an example of a parallel ditch in accordance with the present invention,
fig. 2 er en snittskisse sett i retning pilene II-II i fig. 1, fig. 3 er en snittskisse sett langs pilene III-III i fig. 1, fig. 4 er en planskisse som viser et eksempel på en rigg i fig. 2 is a sectional view seen in the direction of arrows II-II in fig. 1, fig. 3 is a sectional view seen along the arrows III-III in fig. 1, fig. 4 is a plan view showing an example of a rig i
samsvar med oppfinnelsen som er delt i to blokker,accordance with the invention which is divided into two blocks,
fig. 5 er en planskisse som viser måten som riggen i to blokker dokksettes inn i de parallelle grøfter, og fig. 5 is a plan sketch showing the way in which the rig in two blocks is docked into the parallel trenches, and
fig. 6 er en planskisse som viser den ferdigstilte delvis nedsenkede rigg. 1....parallell-grøft, 5 ....midlertidig sluseport, 7, 8 eksisterende første og andre dokk, 9, 10.... fremre og bakre blokker, 11.... ferdigstilt delvis nedsenket rigg. fig. 6 is a plan view showing the completed partially submerged rig. 1....parallel ditch, 5 ....temporary lock gate, 7, 8 existing first and second docks, 9, 10....fore and aft blocks, 11....completed partially submerged rig.
En utførelse av en parallellgrøft 1 for å utføre oppfinnelsen vil nå bli beskrevet. Det vises til fig. 1, 2 og 3, hvor et landstykke 3 som tilstøter en strandkant 2, arrangeres midlertidige sluseporter 5 bygd av betongelementer eller stålplate-støtter og fjernbare og gjenmonterbare ved kaidelene av de parallelle grøfter 1 innbefattende side-om-side anordnede babord og styrbord grøfter 4p og 4s hvor det henholdsvis kan opp-stilles deri babord og styrbord pongtonger av en delvis nedsenket rigg og som har en tilstrekkelig lengde for å oppta lengden av riggen, og grøftene er begge forsynt med en dren-eringspumpe som ikke er vist som er tilrettelagt for å drenere det indre av grøften og et brønnpunkt som ikke er vist og tilrettelagt for å drenere vannet i grøften såvel som en betong-blokk 6 som kan motstå riggbelastningen og som ligger ved bunnen av grøften, og hvor landstykket mellom grøftene er be-grenset til en høyde som ikke interfererer med riggstøttene osv., for slik å minimalisere mengden av grunnen som må graves ut og bredden og dybden av grøftene er valgt til å være til passet henholdsvis med den ønskede bredde til pongtongene og dypgangen under dokksetting og sjøsetting. An embodiment of a parallel trench 1 to carry out the invention will now be described. Reference is made to fig. 1, 2 and 3, where a piece of land 3 adjacent to a beach edge 2, temporary lock gates 5 constructed of concrete elements or steel plate supports and removable and remountable at the ends of the parallel ditches 1 including side-by-side arranged port and starboard ditches 4p are arranged and 4s where port and starboard pontoons of a partially submerged rig can respectively be set up therein and which have a sufficient length to accommodate the length of the rig, and the ditches are both provided with a drainage pump not shown which is arranged for to drain the interior of the trench and a well point which is not shown and arranged to drain the water in the trench as well as a concrete block 6 which can withstand the rigging load and which is located at the bottom of the trench, and where the plot of land between the trenches is limited to a height which does not interfere with the rig supports, etc., so as to minimize the amount of ground to be excavated and the width and depth of the trenches are chosen to be suitable ldswise with the desired width for the pontoons and the draft during docking and launching.
Det vil nå bli beskrevet fremgangsmåten for å bygge en delvis nedsenket rigg gjennom bruk av de ovenfor nevnte parallell-grøfter 1, idet det vises til fig. 4, 5 og 6, hvor den fremre og bakre del av en delvis nedsenket rigg som skal bygges i første og andre dokker 7 og 8 i de eksisterende dokker, det vil si at de på tvers avdelte fremre og bakre blokker 9 og 10 av den delvis nedsenkede rigg blir først bygd som vist i fig. 4, og etter at disse deler er blitt sjøsatt, vil som vist i fig. 5 en eller den andre av blokkene dokksettes i den parallelle grøft 1 i samsvar med oppfinnelsen og den gjenværende blokk dokksettes på en slik måte at koplingsdelene til blokkene vende rmot hverandre, hvoretter slusing effektueres ved den midlertidige sluseport 5 og deretter opereres sugepumpene for å evakuere vann. Deretter som vist i fig. 6 forbindes den fremre og bakre blokk og sjøsettes som en ferdigstilt rigg 11. The method for building a partially submerged rig through the use of the above-mentioned parallel trenches 1 will now be described, referring to fig. 4, 5 and 6, where the front and rear part of a partially submerged rig to be built in the first and second docks 7 and 8 in the existing docks, that is to say the transversely divided front and rear blocks 9 and 10 of the partially submerged rigs are first built as shown in fig. 4, and after these parts have been launched, as shown in fig. 5 one or the other of the blocks is docked in the parallel trench 1 in accordance with the invention and the remaining block is docked in such a way that the connecting parts of the blocks face each other, after which sluicing is effected at the temporary lock gate 5 and then the suction pumps are operated to evacuate water . Then, as shown in fig. 6, the front and rear blocks are connected and launched as a completed rig 11.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59109362A JPS60255594A (en) | 1984-05-31 | 1984-05-31 | Method of building half-submerged rig |
Publications (1)
Publication Number | Publication Date |
---|---|
NO860312L true NO860312L (en) | 1986-01-28 |
Family
ID=14508302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO860312A NO860312L (en) | 1984-05-31 | 1986-01-28 | BUILDING METHOD FOR PARTIAL SUBMISSIBLE RIGG. |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS60255594A (en) |
KR (1) | KR860700109A (en) |
GB (1) | GB2171961A (en) |
NO (1) | NO860312L (en) |
WO (1) | WO1985005607A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5814358B2 (en) * | 1977-12-01 | 1983-03-18 | 三井造船株式会社 | How to build an offshore structure using multiple adjacent docks |
JPS5814358A (en) * | 1981-07-17 | 1983-01-27 | Sanyo Electric Co Ltd | Cassette loading device |
-
1984
- 1984-05-31 JP JP59109362A patent/JPS60255594A/en active Pending
-
1985
- 1985-05-27 GB GB08602225A patent/GB2171961A/en not_active Withdrawn
- 1985-05-27 WO PCT/JP1985/000289 patent/WO1985005607A1/en unknown
-
1986
- 1986-01-22 KR KR1019860700038A patent/KR860700109A/en not_active Application Discontinuation
- 1986-01-28 NO NO860312A patent/NO860312L/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO1985005607A1 (en) | 1985-12-19 |
JPS60255594A (en) | 1985-12-17 |
GB8602225D0 (en) | 1986-03-05 |
GB2171961A (en) | 1986-09-10 |
KR860700109A (en) | 1986-03-31 |
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