Surfactant Acid Retarder

Stepan Oilfield Solutions  improving well stimulation efficiency with PETROSTEP® SAR-1!

In oilfield operations, acidizing is a crucial technique used to enhance oil and
gas flow by dissolving carbonate formations like limestone and dolomite. In
low permeability, high temperature reservoirs, efficient stimulation is governed
by reaction kinetics versus placement time for the treatment solution.
Hydrochloric acid (HCl) is the primary agent used for this process, but it
reacts too quickly, and gets consumed in the near wellbore area, limiting its
ability to penetrate deeper into the reservoir. This premature acid spending
can reduce the effectiveness of the treatment, preventing optimal well
stimulation and leaving untapped potential within the formation.
To maximize efficiency, a controlled acid reaction is essential—allowing
deeper acid penetration before spending occurs, improving reservoir
connectivity, and enhancing overall production.

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