Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1985-03-07
1986-12-02
Novosad, Stephen J.
Wells
Submerged well
Connection or disconnection of submerged members remotely...
166341, 405195, E02D 554, E21B 712
Patent
active
046258043
ABSTRACT:
An apparatus (A) and method for precision placement of a template (T) of the type having at least one sleeve member (20) for placing about a well casing stub (W) extending from the sea floor (S) includes semi-rigidly coupling a mating means (M) mounted with the template (T) for demountably coupling the template (T) to a complementary end (E) of a drill string (D). The drill string (D) is then lowered from a vessel (V) above the well casing (W) with the template (T) demountably coupled thereto until the template (T) is in proximity to the sea floor (S). The orientation of a selected axis of the template (22) is then determined relative to a desired heading (24). The drill string (D) is rotated about its vertical axis (26) until the desired orientation of the template is achieved. The drill string (D) is then lowered until the template (T) contacts the sea floor (S) when the drill string (D) is remotely released from the template (T).
REFERENCES:
patent: 3302709 (1967-02-01), Postlewaite
patent: 3353595 (1967-11-01), Nelson
patent: 3732923 (1973-05-01), Fowler
patent: 4126183 (1978-11-01), Walker
patent: 4174011 (1979-11-01), Zaremba
patent: 4497592 (1985-02-01), Lawson
Frank R. Carmichael, Offshore Drilling Technology (Park Ridge: Noyes Data Corp 1975), pp. 50-55.
Grady Allen Survey Consultants, Inc.
Kisliuk Bruce M.
Novosad Stephen J.
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