【摘要】 介绍了镁合金（MB₂）用作CO₂EOR地下管柱封隔器以下部位的油/套管的牺牲阳极保护的研究。用电化学方法测量镁合金与J₅₅钢之间的电偶电流,用失重法测定镁合金与J₅₅钢之间的电偶腐蚀,为井下环形空间井管用镁合金牺牲阳极保护提供了合适的比例。更多还原

【Abstract】 The study of sacrificial anodic protection in oil-casing pipe underpacker against CO₂ EOR was described briefly. The current of galvaniccouple （GC） between magnesium alloy and steel J₅₅ was measured by elec-trochemical method, and the corrosion of GC between them was measuredtoo by use of method of weight loss, which provided a suitable proportionfor sacrificial anodic protection by use of magnesium alloy in annular spaceof the oil-casing pipe.更多还原