大庆油田废钻井液对土壤环境的影响

The effect of waste drilling fluid upon soil environment in Daqing oil field

通过钻井液成分分析及废钻井液在四种土壤中淋渗模拟试验，阐述了废钻井液对土壤理化性质的影响，钻井液中有毒性的重金属和石油类有机物在黑钙土、草甸土、盐碱土、沙壤土中运移、积累及降解情况。

By means of analysis of drilling fluid composition and simulation testof waste drilling fluid leached into four kinds of soil,authors demonstrated the effect ofwaste drilling fluid upon the physical and chemical properties of soil,and the migration,accumulation and degradation conditions of poisonous heavy metals and hydrocarbon or-ganics of waste drilling fluid in black calcium soil, grassy marshland soil, saline-aIkalisoil and sandy loam.