Abstract
Summary Effects of chemical additives on acid reaction rates may be determined by observation of acid reaction in hollow limestone cores. Reactivities of acids containing (1) surfactant gelling agents, (2) polymeric gelling agents, (3) crosslinked polymeric gelling agents, and (4) fluid loss additives were measured. Effects of chemical and filter cake retardation were assessed, and experiments were conducted with and without fluid leakoff at temperatures of 150 to 300°F [65 to 150°C].
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