Corrosion mechanism and corrosion control of slotted liners

石油和天然气工业是加拿大西部重要的经济支柱。在影响高效采油的众多技术和经济因素中，腐蚀问题长期以来一直是加拿大石油工业面临的一大挑战，尤其是在阿尔伯塔。石油开采过程中的极强腐蚀性物质造成了恶劣的使用条件，并且腐蚀损坏显著缩短了设备部件（例如蒸汽辅助重力泄油（SAGD）系统中的割缝衬管）的寿命，导致生产成本高、生产效率低、安全和环境问题。修理/更换损坏割缝衬管的费用很高，对作业的技术和财务方面造成双重影响。因此，有必要系统地研究割缝衬管的失效机理和影响材料降解的因素。深入了解潜在的控制因素将使我们有效地解决腐蚀问题。

The oil and gas industry is an important economic backbone in western Canada. Among many technical and economic factors that affect efficient oil recovery, corrosion problems have long been a big challenge in the Canadian oil industry, especially in Alberta. The extremely corrosive substances in the oil recovery process create severe service conditions, and corrosion damages significantly shorten the lifetime of equipment components, such as slotted liners in the Steam Assisted Gravity Drainage (SAGD) systems, resulting in high production costs, low production efficiency, safety and environment issues. The high cost of repairing/replacement of damaged slotted liners results in dual impacts on technical and financial aspects of the operation. Therefore, it is imperative to systematically investigate the failure mechanisms of slotted liners and the factors affecting the material degradation. A thorough understanding of the underlying controlling factors will lead us towards solving corrosion problems effectively.