Method of treating wells with self-precipitating scale...

Details Method of treating wells with self-precipitating scale... Method of treating wells with self-precipitating scale...

E - Fixed Constructions

21

B

31/13

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

Patent

CA 1140325

22 A B S T R A C T METHOD OF TREATING WELLS WITH SELF-PRECIPITATING SCALE INHIBITOR The scaling of a producing well is inhibited by injecting a self-reacting alkaline aqueous solution, of a pH-lowering reactant, a compound containing scale-inhibiting anions and a compound containing multivalent cations, which solution sub- sequently precipitates a slightly soluble scale inhibitor within the reservoir.

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