Wells – Submerged well – Submerged – buoyant wellhead or riser
Patent
1991-02-22
1991-10-29
Dang, Hoang C.
Wells
Submerged well
Submerged, buoyant wellhead or riser
166379, 175 5, 405171, E21B 712
Patent
active
050607316
ABSTRACT:
This invention pertains to a method of installing well conductors in such a way that the load upon the platform is significantly reduced thereby also eliminating the need for additional framing members. In accordance with this method, an end region of a well conductor is plugged which, if the conductor has a diameter-to-wall thickness ratio of about thirty to one (30:1), will cause the conductor to achieve nearly neutral buoyancy. By selectively adjusting the buoyancy of the conductor, such as by flooding or de-ballasting, additional conductor lengths may be added without imposing an unduly large load upon the platform. In this fashion, a smaller crane will be able to lower the conductor string without the need for a much larger derrick crane, which may then be more efficiently used solely to upend and stab the elongated conductors through the platform.
REFERENCES:
patent: 3670507 (1972-06-01), Mott et al.
patent: 3754607 (1973-08-01), Van Daalen
patent: 3782460 (1974-01-01), Skinner
patent: 4142371 (1979-03-01), Mayfield et al.
patent: 4184515 (1980-01-01), Streich et al.
patent: 4262702 (1981-04-01), Streich
patent: 4286629 (1981-09-01), Streich et al.
patent: 4474509 (1984-10-01), Antes et al.
patent: 4804018 (1989-02-01), Carr et al.
Dang Hoang C.
Edwards Robert J.
Hoelter Michael L.
McDermott International Inc.
LandOfFree
Method of installing well conductors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of installing well conductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of installing well conductors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1393543