四川轻化工大学学报（自然科学版）2025，Vol.38Issue(3)：37-43,7.DOI:10.11863/j.suse.2025.03.05
基于冻融法的废弃水基钻井液脱水性能实验研究
Study on Dewatering Performance of Waste Water-based Drilling Fluid Based on Freeze-thaw Method
摘要
Abstract
Waste water-based drilling fluid in Sichuan and Chongqing area is treated by freeze-thaw method.The effects of freezing temperature and freezing time on the dewatering performance of waste water-based drilling fluid are studied,as well as the variation patterns of sedimentation,supernatant solid content and filtration rate are analyzed.The results show that the internal temperature of abandoned drilling fluid reaches a stable state more rapidly with the lower the freezing temperature.The lower the freezing temperature,the faster the settling speed and the greater the settlement ratio of the melted drilling fluid.However,after melting under the condition of slow freezing with the relatively high temperature of T=-6℃,the solids content in the supernatant of the drilling fluid is lower than the content achieved under the condition of quick-freezing with the low temperature of T<-6℃.When the freezing temperature is-6℃and the freezing time is 48 h,the dewatering performance of waste water-based drilling fluid is the best,and the minimum solid content of supernatant achieves a good value of 8.91%.Meanwhile,when the freezing time is less than 31 h,low temperature quick-freezing can promote the filtration of the melted drilling fluid,but the filtration speed of high temperature slow-freezing is higher after 31 h.关键词
废弃水基钻井液/冻融法/脱水处理/固相含量Key words
waste water-based drilling fluid/freeze-thaw method/dewatering treatment/solid content分类
能源科技引用本文复制引用
罗会清,田胡东,李博瀚,白志山,李瑞隆..基于冻融法的废弃水基钻井液脱水性能实验研究[J].四川轻化工大学学报（自然科学版）,2025,38(3):37-43,7.基金项目
过程装备与控制工程四川省高校重点实验室开放基金资助项目(GK202105) （GK202105）
