物理-化学破乳协同处理废弃水包油钻井液  

The Physical-Chemical Synergistic Demulsification Treatment of Waste Oil-in-water Drilling Fluid

作　　者：胡彬[1] 邓皓 刘光全 任雯 张明栋 刘晓辉 谢水祥 

机构地区：[1]中国石油西南油气田分公司川中油气矿 [2]中国石油安全环保技术研究院

出　　处：《油气田环境保护》2015年第5期37-40,91-92,共4页Environmental Protection of Oil & Gas Fields

摘　　要：针对国内某油田的废弃水包油钻井液处理技术难题,采用物理-化学破乳协同技术,开发了废弃水包油钻井液除油技术,油回收率可达90%以上,回收柴油可用于配制水包油钻井液,并对废弃水包油钻井液除油后产生的中层废水及泥渣开展了回用和无害化处理技术研究。实验结果表明:中层废水处理后,水质清,pH值、COD、石油类及SS均达到GB 8978—1996《污水综合排放标准》一级标准,且该中层水可再用于收油处理的补充水;泥渣固化处理后,固化物浸出液无色透明,pH值、COD、石油类及重金属等指标均达到GB 8978—1996《污水综合排放标准》一级标准。In this paper,a new technique,based on physical and chemical methods used cooperatively,is developed to deal with the waste oil-in-water drilling fluid collecting from a given oilfield.The reclaimed diesel concentration meets the properties to prepare drilling fluid and the recovery rate reaches up to 90%.In addition,the technologies of harmless treatment and reuse are studied to dispose respectively the sludge and wastewater left after oil removing.For one thing,the treated wastewater is very clear and the pH,COD,petroleum content and SS meet the primary standard of ' Integrated Wastewater Discharge Standard'(GB 8978—1996).For another thing,the lixivium of solidified sludge is colorless and transparent.The pH,COD,content of petroleum and heavy metals also meet the primary standard of 'Integrated Wastewater Discharge Standard'(GB 8978—1996).And the recycling of waste-water oil drilling fluids and safe disposal are achieved.

关 键 词：废弃水包油钻井液 协同破乳 除油 回用 无害化 

分 类 号：X741[环境科学与工程—环境工程]