A novel YWY-typed organic phosphorus corrosion inhibitor was synthesized and researched by weight corrosion value, potentiodynamic method and SEM under the condition of bitter salt water.
研制了一种新型YWY有机膦缓蚀剂，应用重量法、电化学方法及扫描电镜等手段对合成的有机膦缓蚀剂ywy在苦咸水条件下的缓蚀性能及其缓蚀机理进行了研究。
Because of the place obstruction of corrosion products in the surface of the alloys, while corrosion time is at 120 minutes above, the corrosion rate descends to the stable value in 48 hours.
当腐蚀浸泡的时间大于120分钟后，腐蚀产物在铝合金表面产生了明显的位阻作用，从而使腐蚀速率逐渐下降，直至48小时后，腐蚀速率趋于一相对稳定的数值。
The result shows that the main reasons are high bottom hole temperature, corrosion of drilling tool during storage and drilling process, high value of formation drillability, and multi-fault.
结果表明，井底温度高、钻具存放及钻井过程中的腐蚀和地层可钻性级值高且断层多，是该地区钻具失效的主要原因。
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