重晶石对金属表面冲蚀作用研究  

Effect of Barite on the Erosion Wear of Metal Surface

作　　者：董晓强[1] 柴龙[1] 孔勇[1] 

机构地区：[1]页岩油气富集机理与有效开发国家重点实验室和中国石化石油工程技术研究院,北京100101

出　　处：《科学技术与工程》2016年第22期199-202,共4页Science Technology and Engineering

基　　金：国家重大专项(2016ZX05061);国家自然科学基金重大项目(51490650);中石化科技部项目(P15105)资助

摘　　要：采用高速旋转冲蚀的方法评价了重晶石对金属表面的冲蚀效果,考查了剪切速度、剪切时间以及加重剂含量对冲蚀速率的影响规律。利用粒度分析仪、扫描电镜以及表面形貌仪研究了重晶石对金属表面的冲蚀作用机理。研究发现,冲蚀速率受冲蚀流速、作用时间、重晶石粒径大小及其含量的影响明显,冲蚀时间越短、流速越大、重晶石粒径越大、重晶石含量越高,冲蚀速率越高。The effect of barite on the erosion wear of metal surfaces was measured after high-speed rotating shear, weighting content and it was evaluated in manners of shear rate, rotating time. In addition, the erosion mechanisms of barite were investigated by particle size analyzer, SEM and 3D profiling system. It was founded that the erosion rate was significantly affected by shear velocity, erosion time, the particle size and solid content of weighting material in system. The higher erosion rate was not only contributed to the higher shear rate, particle size and its solid content, but also to the less rotating time.

关 键 词：钻井液 加重剂 重晶石 冲蚀 

分 类 号：TE254[石油与天然气工程—油气井工程]