人工运移井套管防腐蚀研究及寿命预测

Anti-corrosion and Life Prediction of Artificial Migration Well Casing

通过模拟人工运移井封堵完好和封堵泄漏两种腐蚀工况,评价不同添加量下两种缓蚀剂HYF-01和HSJJL-01对N80套管钢的缓蚀效果,并计算了N80套管耐腐蚀寿命,筛选出满足套管15a封堵年限要求的缓蚀剂及最佳添加量。结果表明:封堵完好情况下,HYF-01和HSJ-JL-01两种缓蚀剂的添加量为0.1%(质量分数,下同)时,缓蚀效果相对较好;封堵泄漏情况下,HYF-01和HSJ-JL-01两种缓蚀剂的添加量为1.0%时,缓蚀效果相对较好。经过计算可知:添加0.5%和1.0%的HYF-01均能满足套管15a封堵年限要求。

By stimulating plugging soundness and plugging leakage,the corrosion inhibition of two kinds of inhibitor,HYF-01 and HSJ-JL-01,in different contents was evaluated,and the anti-corrosion life of N80 casing steel was calculated to choose the inhibitor and its best content to meet the requirement of anti-corrosion life of 15 years.The results show that the best content was 0.1%（mass fraction）for both HYF-01 and HSJ-JL-01 in plugging soundness,and was 1.0%for both HYF-01 and HSJ-JL-01 in plugging leakage.Adding 0.5% and 1.0% HYF-01 could meet the requirement of anti-corrosion life of 15 years.