New compositions for iron control in acid treatments for oil wells
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United States of America Patent
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Aug 20, 1996
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N/A
app pub date -
Jul 9, 1992
filing date -
Jul 19, 1991
priority date (Note) -
Expired
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Abstract
The invention relates to iron control in an acid medium for forestalling the formation of precipitates known as 'sludges' (asphaltic products) in contact with certain crude oils. Use is made of compounds comprising a mercaptan function non miscible in water and, in combination, a selection of catalysts. Application to acid treatments for oil, gas, water, geothermal and analogous wells, as well as to industrial cleaning.
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