研究了20#钢半浸在65℃，通入0．1MPa压力的CO2气体，含两种K值（K-Ca^2＋／HCO3^-）的模拟油气田产出水中，以及悬挂在该产出水气相中的腐蚀行为。结果表明，在K值为193（高K值）下的平均腐蚀速率小于在K值为87（低K值）下的平均速率，而高K值下的局部扩展速率高于低K值下的局部扩展速率，表明K值是影响CO2腐蚀的重要参数之一。
The CO2 corrosion behaviors of 20 # steel half-immersed in simulated oilfield produced waters were studied. The waters with two K values （ K is ratio of Ca^2＋/HCO3^- ） were aerated with 0. 1 MPa CO2 gas at 65 C. The results showed that the average corrosion rate of the samples with K= 193 was lower than that with K=87, the localized corrosion rate of the samples with K= 193 was higher than that with K= 87, indicating that the K value is one of the key parameters infuencing the CO2 corrosion.
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