Internal tieback for subsea well

A method for tying back a subsea well assembly to a surface platform comprising:

• (a) providing the subsea well assembly with an upper internal profile and a lower internal profile;
• (b) providing a tieback connector with a load ring and a locking member located below the load ring;
• (d) connecting the tieback connector to a string of tieback conduit, and lowering the tieback connector into the subsea well assembly;
• (d) rigidly securing the load ring to the upper internal profile;
• (e) partially securing the locking member to the lower internal profile;
• then
• (f) in the event the tieback connector along with the load ring and the locking member begin to move upward relative to the lower internal profile, the upward movement causes the locking member to move from partial into full engagement with the lower internal profile, limiting the upward movement of the tieback connector.

A subsea well apparatus, comprising:

• a subsea well assembly having first and second internal profiles axially spaced apart from each other relative to an axis of the subsea well assembly;
• a connector having first and second locking members axially spaced apart from each other, the connector adapted to be secured to a conduit string deployed from a surface vessel;
• the first locking member having a run-in position and an engaged position rigidly secured to the first internal profile;
• the second locking member having a run-in position and an engaged position partially secured to the second internal profile, such that the second locking member is axially movable a limit amount relative to the second internal profile;
• and
• in the event the connector along with the first and second locking members begin to move upward relative to the second internal profile, the upward movement causing the second locking member to move from partial engagement into full engagement with the second internal profile, limiting the upward movement of the connector.