Session: Corrosion Inhibitors in the Oil and Gas Industry (Part II of III)
Study of Pre-Partitioned Fluids under High Temperature/High Pressure Conditions (C2026-00260)
Thursday, March 19, 2026
11:00 AM - 11:30 AM Central
Location: 362 DE
Earn .5 PDH
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Tharindu Jayaneththi, NIHAL OBEYESEKERE, Kevin Mutch, Carlos Fernandez, Milan Bartos
This study outlines the performance investigation of corrosion inhibitors designed for deepwater oil fields, specifically under extremely high-temperature and high-pressure conditions. A novel testing protocol involving the pre-partitioning of synthetic brine at 150°C prior to corrosion evaluation is described. The pre-partitioned brines were prepared using various oil-water ratios at different temperatures with several corrosion inhibitors under specific CO₂ partial pressures. The prepared brine was subsequently used in both High-Pressure/High-Temperature Rotating Cylinder Autoclave (HP/HT RCA) and High-Pressure, High-Temperature Rotating Cylinder Electrode (HPHT-RCE) tests to simulate downhole environments. Results showed that several corrosion inhibitors demonstrated effective performance in RCA testing under high-temperature conditions, as determined gravimetrically. However, the same inhibitors failed to provide adequate protection in HPHT-RCE tests, determined electrochemically. This discrepancy raises concerns about the reliability of corrosion rate measurements in the HPHT-RCE system under elevated pressure and temperature, prompting further investigation. Despite this limitation, the identified inhibitors show promise as high-temperature corrosion control solutions for deepwater applications, pending validation across multiple test platforms.
