震击器心轴表面腐蚀原因及防护措施研究

发布时间：2018-04-10 16:39

本文选题：震击器心轴 + 电镀硬铬　；参考：《东北石油大学》2015年硕士论文

【摘要】：近几年来,辽河油田由于单井石油产量降低,故采取多打井的方式提高石油整体产量。然而辽河油田是一个地下断层多、地质复杂的类型为稠油。但是辽河油田稠油埋藏较深,因此在打井、钻井的过程中常常由的复式油气区,石油主要于地下断层多、地质复杂等原因导致在钻探过程中事故发生频率明显增加,其中卡钻事故占所有事故的一半。对于处理卡钻事故,使用震击器解卡效果最好。虽然在处理卡钻事故中,使用震击器的效果最好,但是震击器的工作环境充满泥浆腐蚀液,环境极其恶劣,震击器在电化学腐蚀和疲劳运动的情况下,心轴易腐蚀断裂。因此,震击器心轴表面的光滑程度直接影响着震击器的使用时间,因此研究震击器心轴表面的腐蚀原因,并选择合适的防腐措施就显得相当重要。震击器心轴的材质为38Cr Mo合金钢,本论文通过研究38Cr Mo合金钢在泥浆腐蚀液中的耐蚀性并结合38Cr Mo合金钢在泥浆腐蚀液中的腐蚀形貌、腐蚀产物的XRD分析总结出震击器心轴表面的腐蚀机理。另外,通过分析38Cr Mo合金钢+电镀硬铬镀层、38Cr Mo合金钢+化学镀Ni-P合金镀层、38Cr Mo合金钢+表面渗氮层的耐蚀性以及机械性能(硬度、耐磨性)选择合适的防护措施,并总结出防腐机理。
[Abstract]:In recent years, Liaohe Oilfield due to reduced oil production of single well, so take more wells to increase oil production. However, the overall style of Liaohe Oilfield is a multi type underground fault, geological complex for heavy oil. But the Liaohe Oilfield buried deep, so in the process of drilling wells, often by the compound oil and gas the oil in the underground area, main faults, complex geological and other causes during the process of drilling accident frequency increased significantly, the sticking accidents accounted for half of all accidents. For handling accident, use the jar card best. Although in the treatment of sticking accidents, the use of the jar had the best effect however, the jar working environment filled with mud corrosion liquid, the environment is extremely bad, the jar in the electrochemical corrosion and fatigue movement situation, easy mandrel corrosion fracture. Therefore, shock is the direct surface smooth degree of mandrel The effect of earthquake strike is used in time, so the study shock corrosion jar surface of the spindle, and it is very important to choose the right protective measure. The jar spindle is made of 38Cr Mo alloy, this paper through the research of 38Cr Mo alloy steel corrosion resistance in mud corrosion in liquid and corrosion morphology of 38Cr Mo alloy steel in mud corrosion medium, corrosion products XRD analysis of corrosion mechanism of earthquake struck mandrel surface. In addition, through the analysis of the 38Cr Mo alloy steel + hard chromium plating, 38Cr + Mo alloy electroless plating of Ni-P alloy, 38Cr alloy steel Mo + surface nitriding layer of the corrosion resistance and mechanical the performance (hardness, wear resistance) to choose appropriate protective measures, and summarizes the anticorrosion mechanism.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE982

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