FIELD: mining industry, particularly water, oil or gas well equipment.
SUBSTANCE: well filter comprises perforated case, support rods and profiled wire coils or ganged plastic or propylene rings defining horizontal slots widening in filter inward direction. The coils or rings have rectangular cross-sectional edges. Lower ones are inclined at an angle to horizon corresponding to natural slope of bed rock or gravel filling in filtering agent medium.
EFFECT: possibility of system operation optimization.
1 dwg
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|---|---|---|---|
| WELL FILTER | 2004 |
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RU2586359C1 |
