A life prediction model for P110S steel in deep-well environments with H2S/CO2 coexistence based on multi-factor chemometric drive
作者
单位
Corrosion and Protection Center、Northeastern University、Shenyang、110819、P. R. China. b. Sinopec Northwest Company of China Petroleum and Chemical Corporation、Urumqi、Xinjiang 830011、China. c. State Key Laboratory of Oil and Gas Equipment、CNPC Tubular Goods Research Institute、Xi'an 710077、China. d. Liaoning Petrochemical University、No.1 West Dandong Road、Fushun 113001、China.
收录来源
International Corrosion Congress · 第22届国际腐蚀大会
摘要
A mechanistic-chemometrics model for life prediction of P110S steel in deep-well environments with H2S/CO2 coexistence was proposed. The model was developed by considering the interaction mechanism between uniform and pitting corrosion, then modified using a multi -factor chemometric drive incorporating temperature/pressure, flow velocity, stress. Finally, the pit -to-crack transition was modeled using finite element design and direct current potential drop measurements, completing the life prediction process. The model predicts a lifespan of 2.28 to 5.25 years at different well depths, and this result was validated with on-site data, indicating the model’s accuracy. The knowledge paradigm provided herein will assist in corrosion prediction.