Dissolving barium sulphate scale

Details Dissolving barium sulphate scale Dissolving barium sulphate scale

C - Chemistry, Metallurgy

07

D

31/22, 260/237.2

C07D 273/08 (2006.01) C09K 8/528 (2006.01) C09K 8/78 (2006.01) E21B 37/06 (2006.01)

Patent

CA 1120473

ABSTRACT Process for cleaning a well penetrating an underground formation and optionally formation parts in the vicinity of the wall using an aqueous composition comprising a salt of a macrocyclic polyether (e.g. 1,10-di(carboxymethyl)-1,10-diaza- 4,T,13,16-tetraoxacyclootadacane) which may be formed in situ.

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