Sand retainer plug
Patent
·
OSTI ID:6331237
A system is described for plugging back open casing below the perforations to facilitate the installation of sand and gravel packs about slotted liners. Its use is said to reduce the total length of liner required, provide a plugback at a predetermined depth, permit accurate determination on the amount of sand or gravel required for the completion operation, and eliminate fill across the producing interval due to the sloughing of formation sand. The apparatus includes a perforated liner extending below a packer, a tubular mandrel mounted in fixed position at the lower end of the liner, a cup packer axially slidable on the mandrel, and a means for limiting the axial movement of the cup packer with respect to the mandrel. (6 claims)
- Assignee:
- Esso Production Research Co.
- Patent Number(s):
- US 3381755
- OSTI ID:
- 6331237
- Country of Publication:
- United States
- Language:
- English
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