Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1997018380) RISER THAT IS TO BE DETACHED NEAR THE WATER SURFACE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018380 International Application No.: PCT/JP1996/003242
Publication Date: 22.05.1997 International Filing Date: 06.11.1996
IPC:
E21B 7/128 (2006.01) ,E21B 17/01 (2006.01) ,E21B 17/08 (2006.01) ,E21B 33/038 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
7
Special methods or apparatus for drilling
12
Underwater drilling
128
from floating support with independent underwater anchored guide base
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
01
Risers
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02
Couplings; Joints
08
Casing joints
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33
Sealing or packing boreholes or wells
02
Surface sealing or packing
03
Well heads; Setting-up thereof
035
specially adapted for underwater installations
038
Connectors used on well heads, e.g. for connecting blow-out preventer and riser
Applicants:
JAPAN DRILLING CO., LTD. [JP/JP]; 20-16, Nishi-azabu 3-chome Minato-ku Tokyo 106, JP
JAPAN NATIONAL OIL CORPORATION [JP/JP]; 2-2, Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo 100, JP
MITSUI ENGINEERING & SHIPBUILDING CO., LTD. [JP/JP]; 6-4, Tsukiji 5-chome Chuo-ku Tokyo 104, JP
MITSUBISHI HEAVY INDUSTRIES, LTD. [JP/JP]; 5-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100, JP
Inventors:
KOGURE, Eiji; JP
MACKIE, Michael, J.; US
MCCALLA, Jeffrey, M.; US
HAYASHI, Hiroichi; JP
Agent:
KOSUGI, Yoshio ; Pelican Building 4F 3-3, Nishi-shimbashi 3-chome Minato-ku Tokyo 105, JP
Priority Data:
08/556,60913.11.1995US
Title (EN) RISER THAT IS TO BE DETACHED NEAR THE WATER SURFACE
(FR) TUBE PROLONGATEUR DESTINE A ETRE DETACHE PRES DE LA SURFACE DE L'EAU
Abstract:
(EN) A floating vessel carrying a digging apparatus with a required offshore structure for digging a well in the sea bed. A riser extending from the vessel into the well in the sea bed surrounds a drill string so as to provide a circulation of dug muddy water and dug fluid. This riser is constituted by at least two segments that can detachably be connected to each other, and one of the two can move together with the floating vessel, while the other stays at a predetermined location until the two segments are connected to each other again by providing buoyancy. A riser system for use for a producing operation is also provided that comprises at least two detachable segments.
(FR) On décrit un bâtiment flottant portant un appareil d'excavation pourvu d'une structure marine adéquate, afin de forer un puits dans un fond marin. Ce tube prolongateur, s'étendant du bâtiment au puits foré dans le fond marin, entoure un train de tiges de manière à permettre une circulation d'eau boueuse de forage et de fluide de forage. Ce tube prolongateur se compose d'au moins deux segments que l'on peut relier l'un à l'autre de façon amovible, l'un de ceux-ci pouvant se déplacer en même temps que le vaisseau, tandis que l'autre reste au niveau d'un emplacement déterminé, jusqu'à ce que les deux segments soient reliés à nouveau l'un à l'autre par flottaison. On décrit également un système de tube prolongateur utile pour une opération de production et comprenant au moins deux segments détachables.
Designated States: BR, JP, NO
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
NO19973051EP0802302JP3843334