Advanced once-through flow cell methodology for evaluation of a new staged inhibition concept to mitigate corrosion of carbon steel in high-strength hydrochloric acid flow

A new staged acid corrosion inhibition (ACI) concept, utilising polymerisable ACIs, has been developed to minimise the of coiled tubing and wellbore casing materials during matrix acidizing operations. The concept evaluated using a customised once-through flow cell 4 molar hydrochloric at 80 °C. high quality, protective inhibitor film is established an elevated ACI concentration test period 0–1 h (Stage 1), followed by significantly reduced 1–4 2). This approach able maintain good persistency acceptably low rates.