Process for increasing the water discharge of water delivering drilled wells, previously used for water delivery, and having decreased water discharge
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United States of America Patent
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-
Sep 17, 1985
Grant Date -
N/A
app pub date -
Oct 14, 1983
filing date -
Dec 23, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Process for increasing the water discharge of water delivering drilled wells, which can be characterized in that into the filter section of the well weak acids with a dissociation constant being less than K.sub.d =10.sup.-3 are introduced. After a dwelling period of longer duration, expediently 10 to 48 hours, as well as compressing, flushing is performed by means of a scavenging pump. Thereafter the solution of sodium bicarbonate and/or sodium hypochlorite is introduced into the filter section. After a longer dwelling period, expediently one to thirty-six hours, flushing is performed by means of the scavenging pump. As weak acids with a dissociation constant being less than K.sub.d =10.sup.-3 acetic acid, tartaric acid, citric acid, metaboric and/or tetraboric acid is used.
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