Corrosion Monitoring Wells CO₂ Flooding Technology

In the oil and gas field development process is very important to monitor the status of corrosion, corrosion monitoring is an oil and gas field downhole string, equipment, tools, corrosion testing, not only to guide the optimal adjustment of anti-corrosion technology, but also for risk assessment and early warning downhole corrosion, reducing Economic losses caused by corrosion, prevent accidents. CO2 dissolved in water is corrosive, CO2 corrosion is to limit CO2 flooding technology development important factor, corrosion monitoring CO2 flooding technology is an important part of the adaptation by corrosion monitoring and corrosion effects of corrosion processes were evaluated, law on CO2 Corrosion provide valuable data to support.Jilin Oilfield for CO2 flooding test area, corrosion monitoring techniques to carry out the research, according to the CO2 content CO2 flooding wells, casing pressure is high, gas and other characteristics, suitable for CO2 flooding analysis to determine the corrosion monitoring technology, design corrosion testing tools, technology and equipment, corrosion monitoring techniques successfully used CO2 flooding the scene.Through the integration, development, testing, designed corrosion coupon, a hanging ring, a formation of a point corrosion monitoring techniques to achieve long-term monitoring of downhole corrosion; forming a wellhead corrosion monitoring techniques, corrosive liquid wellhead output for rapid detection, combined CO2 corrosion rules, downhole corrosion environment to achieve rapid evaluation; research and development to form a wellbore rapid corrosion monitoring techniques for real-time downhole corrosion monitoring, rapid evaluation of downhole corrosion; integrated supporting the residual concentration of CO2 corrosion detection technology, through the wellhead output inhibitor concentration was detected, identified underground inhibitor concentration guidance inhibitor filling process adjustments.This paper proposes a downhole corrosion monitoring techniques fixed wellhead corrosion monitoring techniques, wellbore rapid corrosion monitoring techniques, the residual concentration of inhibitor detection technology CO2 flooding wells corrosion monitoring technology to achieve a CO2 flooding situation well downhole corrosion monitoring, guided to develop a comprehensive anti-corrosion measures, not only can improve the relevance of anti-corrosion measures, and can effectively control the corrosion costs, with a strong on-site guidance.