C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 11/04 (2006.01) C09K 8/54 (2006.01) C09K 8/74 (2006.01) C23F 11/12 (2006.01) E21B 41/02 (2006.01) E21B 43/27 (2006.01)
Patent
CA 2387416
An acidic fluid that is useful in stimulation and workover operations, and in particular, in matrix acidizing treatments, comprises an acid, such as hydrochloric acid; water; an aliphatic aldehyde having 1-10 carbon atoms; and an aromatic aldehyde having 7-20 carbon atoms. The aliphatic aldehyde preferably has 1-6 carbon atoms. Glyoxylic acid and glyoxal are especially preferred aliphatic aldehydes. The aromatic aldehyde preferably has 7-10 carbon atoms. Cinnamaldehyde is especially preferred.
L'invention concerne un liquide acide utilisé dans des opérations de stimulation et de reconditionnement, et en particulier, dans les traitements d'acidification matricielle. Ce liquide comprend un acide, tel qu'un acide chlorhydrique; de l'eau; un aldéhyde aliphatique comprenant de 1 à 10 atomes de carbone; et un aldéhyde aromatique comprenant de 7 à 20 atomes de carbone. De préférence, l'aldéhyde aliphatique comprend de 1 à 6 atomes de carbone. L'acide glyoxylique et le glyoxal sont les aldéhydes aliphatiques préférés pour l'invention. De préférence, l'aldéhyde aromatique comprend de 7 à 10 atomes de carbone. Le cinnamaldéhyde est préféré pour l'invention.
Frenier Wayne W.
Hill Donald G.
Schlumberger Canada Limited
Schlumberger Technology Corporation
Smart & Biggar
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