One trip tubular expansion and recess formation apparatus...

Details One trip tubular expansion and recess formation apparatus... One trip tubular expansion and recess formation apparatus...

2007-07-30

2009-10-27

Bomar, Shane (Department: 3676)

Wells

Processes

Assembling well part

C166S206000, C166S216000

Reexamination Certificate

active

07607486

ABSTRACT:
A one trip top to bottom expansion to form a lower end recess on a tubular is described using two swages of different dimensions. The smaller swage is run down hole with the larger swage behind it in a locked collapsed position. When the proper depth is reached the leading swage hits a no go. A pickup force with dogs engaged in a groove releases the lock on the larger swage at which point applied pressure sets an anchor, extends the larger swage to take over the expansion for the recess at the lower end of the tubular. An emergency release is provided to pull out of the hole if the swage cannot complete the task.

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