Product and process for acid diversion in the treatment of subterranean formations
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United States of America Patent
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Apr 20, 1993
Grant Date -
N/A
app pub date -
Sep 10, 1991
filing date -
Sep 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to the treatment by a fluid, or more generally by an acid fluid, of subterranean formations located in particular around an oil, gas, water or geothermal well. Acid is diverted towards the zone to be treated by a surfactant flush, the injection of a foam and then the injection of an acid/surfactant composition. These operations are repeated as often as required, increasing at each stage representing approximately 80 cm (20 to 25 inches) of treatment in terms of height the quantity of foam injected.
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Cited Art Landscape
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