Gravel packer

Details Gravel packer Gravel packer

1985-07-19

1987-01-06

Novosad, Stephen J.

Wells

Means for forming filter beds

166278, E21B 4304

Patent

active

046339442

ABSTRACT:
The present invention relates to a weight-set single-zone gravel packer which may be left in place after gravel packing attached to the screen as a production packer. The gravel packer includes a compression-set packer element, ratchet means to releasably lock the gravel packer in a set mode, intake passage to receive fluid from a tubing string, a return passage to receive fluid from the interior of a gravel screen below the gravel packer; closeable crossover means to transmit fluid from the return passage to the wellbore annulus above the gravel packer; first check valve means to prevent flow down to the gravel screen through the return passage; and second check valve means adapted to selectively connect the return passage with the outside of the gravel packer; and J-slot means for selectively disconnecting the crossover means and tubing string from the gravel packer.

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