Filter for subterranean wells
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United States of America Patent
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Sep 9, 1997
Issued Date -
N/A
app pub date -
Dec 7, 1994
filing date -
May 25, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter medium, and a protective covering, such as a perforated cage, surrounding the filter medium. The filter is particularly suitable for removal of sand and other particulates from fluids produced in a well.
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