C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
166/25, 31/26
C09K 8/68 (2006.01) C09K 8/575 (2006.01) C09K 8/72 (2006.01) E21B 43/22 (2006.01)
Patent
CA 1052557
A B S T R A C T A thickened aqueous liquid, suitable for suspending packing particles, comprises an aqueous solution containing an acid-reactive cellulosic water thickening material, an acidifying material that causes the solution viscosity to decrease after a selected time-temperature exposure, and a relatively slowly reactive material that causes the solution pH to increase to a selected value after a longer time.
226726
Lybarger James H.
Scheuerman Ronald F.
Na
Shell Canada Limited
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