Wells – Screens – Spiral
Patent
1976-12-08
1978-01-17
Purser, Ernest R.
Wells
Screens
Spiral
2104971, E21B 4308
Patent
active
040687139
ABSTRACT:
Improved plastic well screen is stronger and more economical to produce than prior art screens. An extruded inner core member has a generally corrugated or fluted configuration with the radial walls each including stepped right angled portions for increasing the rigidity of the core. An enwrapment wire is welded to the core to define the screen slots. Channels in the core permit flow even when a pumping means occludes the I.D. of the core.
REFERENCES:
patent: 669129 (1901-03-01), Stukes
patent: 2046459 (1936-07-01), Johnson
Clark Barry L.
Hoatson Jr. James R.
Page II William H.
Purser Ernest R.
UOP Inc.
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