E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/31
E21B 43/22 (2006.01) C09K 8/06 (2006.01) C09K 8/54 (2006.01) C23F 11/16 (2006.01)
Patent
CA 1197673
ABSTRACT A corrosion inhibited, clear, high-density composition capable of long term use as a well servicing fluid under conditions of elevated temperature comprises a solution of zinc bromide, calcium bromide, and, optionally, calcium chloride in water having a density in the range of about 15.0 to about 20.0 ppg and a corrosion inhibiting amount of a member selected from the group consisting of ammonium thioglycolate, calcium thioglycolate, thioglycerol and mixtures thereof. -28-
425800
Great Lakes Chemical Corporation
Ridout & Maybee Llp
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