Inhibition of reservoir scale

E - Fixed Constructions – 21 – B

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E21B 43/12 (2006.01) C09K 8/528 (2006.01)

Patent

CA 1316682

Case No. 7675 INHIBITION OF RESERVOIR SCALE Abstract Scaling of a production well in a non-carbonate subterranean reservoir is inhibited by injection into the reservoir a mixture of a phosphonate inhibitor and a calcium chelate where the calcium chelate has a lower stability constant (Ke) than the phosphonate inhibitor.

571826

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