Method and apparatus for remote installation and servicing of un

Details Method and apparatus for remote installation and servicing of un Method and apparatus for remote installation and servicing of un

1979-05-07

1981-08-18

Leppink, James A.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166 85, 166313, 166315, 166362, E21B 1702, E21B 2300, E21B 33035

Patent

active

042841429

ABSTRACT:
Method and apparatus for remote installation and retrieval of underwater well apparatus and servicing of underwater wells without diver assistance by use of a remotely operated tool carried by a handling string including a composite lower joint which contains both smaller flow passages for conveying pressure fluid to the tool and larger passages for communicating with pipe in the well, the composite joint being of sufficient length to extend completely through the blowout preventers when the tool is in operative position and having a right cylindrical outer surface against which the blowout preventers can seal regardless of the rotational position of the composite joint. The invention is especially useful in connection with wells having multiple strings of tubing.

REFERENCES:
patent: 2808229 (1957-10-01), Bauer et al.
patent: 3228715 (1966-01-01), Neilon et al.
patent: 3268241 (1966-08-01), Castor et al.
patent: 3368618 (1968-02-01), Knox
patent: 3540533 (1970-11-01), Morrill
patent: 3661206 (1972-05-01), Putch et al.
patent: 3688841 (1972-09-01), Baugh
patent: 3741294 (1973-06-01), Morrill
patent: 4003434 (1977-01-01), Garrett et al.
patent: 4077472 (1978-03-01), Gano
patent: 4116272 (1978-09-01), Barrington

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