A lot of oil-based cuttings will be produced in the process of oil and gas exploration and development using oil-based drilling fluid. Without correct and efficient treatment, it is likely to cause serious environmental pollution and waste of resources. The oil-based drilling cuttings with high oil content (35. 2 %) are treated by a chemical cleaning method in this study. An efficient cleaning agent(2. 0 %Sodium dodecyl sulfate,0. 25%Triton X-100,0. 86%Na 2SiO 3,5. 0%N-butanol and 91. 89%deionized water) is developed for oil removal. The results show that the efficiency of oil removal using the cleaning agent achieves 97. 3 %. The soil-solid rate in drilling cuttings after treatment is 0. 02. In addition,3. 5 %NaCl solution used to prepare the cleaning agent improves the efficiency of oil removal in the drilling cuttings and it provides a new idea and reference for the direct use of seawater in treating oil-based drilling cuttings.%在使用油基钻井液进行油气勘探开发的过程中会产生大量的油基钻屑,若不对其进行正确、高效的处理则容易造成严重的环境污染及资源浪费.以高含油率(35. 2 %)的油基钻屑为研究对象,采用化学清洗法处理油基钻屑,筛选出了一种高效除油的清洗剂:2. 0 %SDS+0. 25 %TX-100+0. 86 %硅酸钠+5. 0 %正丁醇+91. 89 %去离子水.实验表明此清洗剂除油效率可达97. 3 %,处理后钻屑中油固比为0. 02.采用3. 5 % NaCl溶液(模拟海水)配制的清洗剂,可以提高钻屑除油率.该研究为钻井现场直接利用海水处理油基钻屑提供了新的思路和借鉴.
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