Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1991-01-30
1992-01-14
Kisliuk, Bruce M.
Wells
Submerged well
Connection or disconnection of submerged members remotely...
166382, 166208, 285141, 285143, E21B 2300, E21B 33043
Patent
active
050801732
ABSTRACT:
A subsea well has tieback facilities for further sidetrack drilling. The well has an inner string casing hanger with an outer hanger portion and an inner hanger portion. The inner and outer hanger portions are latched together at the surface and lowered simultaneously. The inner casing string secures to the inner hanger portion. The tieback assembly includes an intermediate tieback conduit that extends into the bore of the outer hanger portion. An inner tieback conduit extend into the bore of the inner hanger portion. For later sidetrack drilling, the inner tieback conduit is pulled upward to unlatch the inner hanger portion from the outer hanger portion, retrieving the inner casing through the intermediate tieback conduit.
REFERENCES:
patent: 3468558 (1967-09-01), Ahlstone
patent: 3492026 (1970-01-01), Ahlstone
patent: 4093030 (1978-06-01), Bonds
patent: 4540053 (1985-09-01), Baugh et al.
patent: 4577686 (1986-03-01), Milberger et al.
patent: 4595053 (1986-06-01), Watkins et al.
patent: 4691780 (1987-09-01), Galle, Jr. et al.
patent: 4880061 (1989-11-01), Ahlstone
patent: 4976458 (1990-12-01), Hosie et al.
Combustion Engineering, Vetco Offshore Production Equipment, pp. 814-815.
ABB Vetco Gray Inc.
Bradley James E.
Kisliuk Bruce M.
LandOfFree
Tieback wellhead system with sidetrack facilities does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tieback wellhead system with sidetrack facilities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tieback wellhead system with sidetrack facilities will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-534813