Expandable well screen
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United States of America Patent
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Nov 13, 2001
Grant Date -
N/A
app pub date -
May 1, 1998
filing date -
May 1, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An expandable well screen for preventing migration of sand or other solid particles into a hydrocarbon fluid production well comprises a number of filter sheets with circumferential slots, which sheets are secured in an iris-shaped configuration and co-axial to an expandable slotted carrier tube such that as result of expansion of the tube the amount of overlap between adjacent filter sheets is reduced. The circumferential slot pattern of the slots enables the filter sheets to slide easily relative to each other and to avoid buckling and/or tearing of the filter sheets during the expansion process.
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