Apparatus for setting liners in boreholes of wells
Patent
·
OSTI ID:5595464
An apparatus for concurrently removing accumulated sand from a borehole and setting a screen liner consists of a perforated cylindrical liner and a wash pipe coaxially aligned in it. The wash pipe has valves adjacent its upper and lower ends adapted to permit flow upward through the wash pipe, but prevent downward flow. A sand receiving load tubing string above the wash pipe is in communication with it, and a hydrostatic valve is responsive to the upward force resulting from weighted contact of the lower end of the apparatus with the sand in the borehole. The apparatus is provided with a dry string of tubing above and in communication with the hydrostatic valve and means for downhole detachment of the liner. (6 claims)
- Assignee:
- EDB-82-087670
- Patent Number(s):
- US 3486558
- OSTI ID:
- 5595464
- Country of Publication:
- United States
- Language:
- English
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