With RAE Engineering and Inspection Ltd. autoclave facility, the performance of protective coatings can be determined under oil and gas production conditions. Coatings are exposed to produced water, oil, and/or gas at process temperature and pressure. Process fluids can contain hydrogen sulfide, carbon dioxide, methane, and other components as applicable.
Why conduct autoclave testing of protective coatings?
Overall view of autoclave facility
Materials that can be evaluated:
Protective coatings, bulk polymers, metallic coatings, elastomers, ceramics, assembled components, composites.
Coating performance is assessed from retention of adhesion, blister resistance, and coating impedance after exposure to autoclave test conditions. Other methods of evaluation relevant to coating performance are included as applicable.
Standard test methods such as NACE TM0185 (Evaluation of Internal Plastic Coatings for Corrosion Control of Tubular Goods by Autoclave Testing) are run.
Custom tests can be designed to meet special service conditions.
EIS (Electrochemical Impedance Spectroscopy):
Coating impedance is measured before and after exposure to autoclave test conditions. The decrease in impedance is related to deterioration and an increase in permeability as a result of the autoclave test conditions. EIS is particularly useful in evaluating coatings which show little visible change, no blistering, and no loss of adhesion as a result of test conditions. See RAE Engineering and Inspection Ltd. EIS Information section for more details.
Rapid Depressurization: The effect of a sudden pressure drop on coating adhesion and physical integrity can be assessed.
Tested panels showing gas (top), hydrocarbon (middle),
and water phase exposures (bottom), with parallel scribe adhesion test