Well tieback connector sealing and testing apparatus

Details Well tieback connector sealing and testing apparatus Well tieback connector sealing and testing apparatus

1991-09-03

1992-09-22

Britts, Ramon S.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166348, 285 24, 285 93, 285141, E21B 33043

Patent

active

051488701

ABSTRACT:
A tieback connector for a subsea well assembly has provisions to enable testing of a tieback seal without having to set any isolation seals in casing below the upper tieback member. The tieback connector has a lower tieback member with an upward facing receptacle. The lower tieback member has a set of running grooves spaced from a set of tieback grooves. An upper tieback member is lowered into the receptacle. The upper tieback member has tieback grooves that engage the tieback grooves of the lower tieback member. A lower seal on the upper tieback member engages a lower sealing area located below at least one of the sets of running grooves and tieback grooves. An upper seal located on the upper tieback member engages an upper sealing area located above at least one of the sets of the running grooves and tieback grooves. A test passage extends between the upper and lower seals. An isolation test tool is positioned in the upper tieback member, with isolation seals above and below the test passage.

REFERENCES:
patent: 4519633 (1985-05-01), Nichols
patent: 4653589 (1987-03-01), Alandy
patent: 4696493 (1987-09-01), Brammer
patent: 4781387 (1988-11-01), Braugh
patent: 4919454 (1990-04-01), Caulfield et al.
patent: 4941691 (1990-07-01), Reimert
patent: 4976458 (1990-12-01), Hosie et al.
patent: 5080173 (1992-01-01), Brammer

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