Liner isolation and well completion system

Details Liner isolation and well completion system Liner isolation and well completion system

1989-08-21

1990-07-24

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166123, 166134, 166208, 166237, 285 18, E21B 2300, E21B 2306, E21B 33129

Patent

active

049429256

ABSTRACT:
In a wellbore having a liner hung from a higher string of pipe, a permanent packer and a seal unit are utilized to isolate the annulus between the liner and the wellbore surface. The downhole completion assembly, which comprises an on-off tool, a latch and seal assembly and a tailpipe, can be lowered into the packer and seal unit by the production tubing, with the latch mechanism of the latch and seal assembly snapping into a threaded portion of the packer. The on-off tool can be disconnected and the production tubing withdrawn from the well. Alternatively, the latch mechanism can be disengaged and the entire downhole completion assembly can be withdrawn from the well in a single trip.

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