Externally testable redundant connections for subsea wells

Wells – Submerged well – Testing

Reexamination Certificate

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Details

C166S337000, C166S250010, C166S086100

Reexamination Certificate

active

10994779

ABSTRACT:
An externally testable redundant connection for a subsea well includes a tube, a connector assembly, and collar. The connector assembly includes a jam nut over the tube; a ferrule over the tube adjacent the jam nut; and a double jam nut disposed over the tube adjacent to the ferrule. The double jam nut includes a test port adapted to receive a test fluid through the test port for determining if the primary seal and the secondary seal are providing a leak proof sealing engagement. The collar engage the tube and transfers an axial force from the double jam nut and compresses the tube into a female profile forming a primary seal. A secondary seal is formed from a compression of the ferrule into the double jam nut using the jam nut.

REFERENCES:
patent: 4457489 (1984-07-01), Gilmore
patent: 4693315 (1987-09-01), Taylor
patent: 4877089 (1989-10-01), Burns
patent: 5082060 (1992-01-01), Johnson et al.
patent: 5864057 (1999-01-01), Baird
patent: 6148664 (2000-11-01), Baird
patent: 6186229 (2001-02-01), Martin et al.
patent: 6561278 (2003-05-01), Restarick et al.
patent: 2002/0162667 (2002-11-01), Ingram et al.

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