Method for treating a well for the removal of scale and to...

Details Method for treating a well for the removal of scale and to... Method for treating a well for the removal of scale and to...

E - Fixed Constructions

21

B

166/54

E21B 37/00 (2006.01) C09K 8/528 (2006.01)

Patent

CA 1217130

ABSTRACT A method for removing scale and inhibiting the formation of scale in a well penetrating a subterranean formation for the production of fluids from the formation, the method comprising; (a) injecting an aqueous solution of a mineral acid into the well in an amount and for a time effective to remove scale from the well; (b) injecting an aqueous solution of EDTA into the well in an amount and for a time effective to remove scale from the well; and, (c) injecting a scale inhibitor through the well and into the subterranean formation surrounding the well.

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