摘要
为研究热蒸馏法对油基钻井泥浆处理和油分回收效果,采用离心法对页岩油废弃油基钻井泥浆进行预处理,对比常压热蒸馏和减压热蒸馏方法的处理效果,结果表明:在300℃条件下减压蒸馏45 min,可将废弃油基钻井泥浆中的含油量降至0.3%以下,满足相关标准要求。通过GC-MS分析可知,减压热蒸馏与柴油的组分相似度较高,而常压蒸馏流程相对较窄,馏出油中缺少C26以上烃组分。利用回收的减压蒸馏油分进行油基钻井液配制,经过72 h滚子加热炉老化后,其表观黏度变化量为3 mPa·s^(-1),动塑比为0.41 Pa/mPa·s,API失水量和高温高压失水量分别为0.8 ml和2.6 ml,耐高温性能、流变性能和滤失性能良好,可以满足泥浆中油分的再利用要求。
In this study,thermal distillation methos were conducted to study the effects on oil-based drilling mud treatment and oil recovery.The centrifugal was used to pretreat the waste oil-based drilling mud during shale gas drilling,and the treatment effects of atmospheric thermal distillation and vacuum thermal distillation were compared.The results shows that after 45 min vacuum distillation at 300℃,the oil content in waste oil-based drilling mud can be reduced to less than 0.3%,meeting the requirements of relevant standards.GC-MS analysis proved that the components of vacuum thermal distillation were highly similar to those of diesel oil.Compared with the vacuum distillation method,there were fewer kinds of fractions after atmospheric distillation,and there was lack of hydrocarbon components above C26 in the distillate.The oil fraction recovered by vacuum distillation was used to prepare oil-based drilling fluid.After 72 h aging of roller heating furnace,the change value apparent viscosity was 3 mPa·s^(-1),the dynamic-plastic ratio was 0.41 Pa/mPa·s^(-1),the API fluid loss and high temperature and high pressure fluid loss were 0.8 ml and 2.6 ml,respectively.Since the above drilling fluid has good high temperature resistance,rheological property and filtration performance,it can meet the reuse requirements of oil in waste drilling mud.
作者
赵登飞
马天奇
白林森
施里宇
陈林皓
ZHAO Dengfei;MA Tianqi;BAI Linsen;SHI Liyu;CHEN Linhao(Jingbian Oil Extraction Factory,Yanchang Oilfield Co.,Ltd.,Shaanxi Yulin 718500,China;Research Institute of Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi’an 710065,China)
出处
《非常规油气》
2022年第5期144-150,共7页
Unconventional Oil & Gas
基金
陕西省重点研发计划项目“延长探区陆相高吸附页岩气的CO_(2)高效置换机理及技术研究”(2022GY-138)。
关键词
废弃油基泥浆
页岩油
热蒸馏
离心
钻井液
回配
waste oil-based drilling mud
shale oil
distillation
centrifugation
drilling fluid
reuse
作者简介
第一作者:赵登飞(1985-),男,大学本科,学士,工程师,主要从事油田安全与环境保护工作。E-mail:wwqlc20@126.com;通讯作者:马天奇(1986-),男,博士,高级工程师,主要从事油田化学与环境保护工作,E-mail:skycomet@sina.com。
