| 废弃水基钻井液低温干燥处理实验研究及经济性评价 |
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| 引用本文： | 李之军,刘徐三,王波,赵威.废弃水基钻井液低温干燥处理实验研究及经济性评价[J].煤田地质与勘探,2019,47(4):201-205. |
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| 作者姓名： | 李之军 刘徐三 王波 赵威 |
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| 作者单位： | 成都理工大学环境与土木工程学院;中煤科工集团西安研究院有限公司 |
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| 基金项目： | 国家自然科学基金项目（41702388） |
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| 摘 要： | 废弃水基钻井液是石油钻井工程作业过程中的废弃物，若直接排放，不但会使钻井液成本居高不下，而且还会对环境造成极为不利的影响。对废弃水基钻井液进行低温干燥处理后再利用，是既经济又符合现代发展趋势的处理方法之一。通过对聚合物钻井液体系、磺化钻井液体系及四川2口页岩气井钻井液体系低温干燥技术实验研究及经济性评价，结果表明:聚合物钻井液体系在120℃条件下干燥处理后性能恶化严重，降低干燥温度能降低其恶化程度；磺化钻井液体系及四川2口页岩气井钻井液体系在120℃条件下干燥处理后性能基本保持不变。这说明低温干燥处理技术能够实现废弃水基钻井液回收再利用，且处理成本低，处理后固体物质便于储存与运输，能够大幅降低钻井液成本。同时，还能够减少废弃钻井液排放量，降低石油钻井工程污染环境的风险。
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| 关 键 词： | 低温干燥技术 废弃水基钻井液 回收再利用 环境保护 |
| 收稿时间： | 2019-01-20 |
Experimental study and economic evaluation of low temperature drying treatment of abandoned water-based drilling fluid |
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| Abstract: | Abandoned water-based drilling fluids are the waste of oil drilling engineering operations. It will not only keep the cost of drilling fluid high, but also have a very adverse impact on the environment if it is directly discharged. Reusing of abandoned water-based drilling fluid after low-temperature drying treatment is one of treatment methods which is economic and conforms to the modern development trend. In this paper, the experimental study and economic evaluation of the low-temperature drying technology of polymer drilling fluid system, sulfonated drilling fluid system and Sichuan shale gas well drilling fluid system were conducted. The results show that the performance of polymer drilling fluid deteriorates seriously after being dried at 120℃, and decreasing the drying temperature can reduce the deterioration, but the performance of the sulfonated drilling fluid system and the drilling fluid system from 2 shale gas wells in Sichuan remained basically unchanged at 120℃. This shows that the low-temperature drying technology can recycle some abandoned water-based drilling fluid, and the processing cost is low, the solid matter after treatment is convenient for storage and transportation, and the drilling fluid cost can be greatly reduced. At the same time, it can also reduce the amount of waste drilling fluid emissions and reduce the risk of environmental pollution in oil drilling engineering. |
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