FIELD: oil and gas production.
SUBSTANCE: expandable well filter consists of expendable bearing tube with filter element of surface. The bearing tube is corrugated along its length with cylinder ends opened upon installation. The filter element corresponds to lengthwise-corrugated tube of similar profile and is sealed on ends; it is concentric installed outside with a gap. Lengthwise webbing rigidly tied with the bearing tube is positioned uniformly along perimetre in the gap between tubes. Space in the gap between tubes is filled with calibrated granules.
EFFECT: raised filter quality and reduced material expenditures for fabrication and operation of filter.
4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2432194C1 |
