Wells – Sonic device – With specific downhole feature
Patent
1980-03-25
1981-11-10
Novosad, Stephen J.
Wells
Sonic device
With specific downhole feature
1510409, 166223, B08B 302, B08B 902, E21B 3700
Patent
active
042992826
ABSTRACT:
A device for cleaning rust and mineral deposits from the perforations in the casing of a water well which has rollers which are hydraulically expanded into contact with the inner surface of the casing, the device is then rotated to run the rollers across the clogged perforations. High pressure water jets are provided to flush away the foreign particles which have been dislodged by the rollers. The device is adjustable such that the exact extent of expansion can be set at the surface. A single free-flow hydraulic cylinder actuates the rollers into contact with the inner surface of the casing.
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