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以川渝地区某钻井平台废弃水基钻井液为对象，采用冻融法对废弃水基钻井液进行处理，研究了冷冻温度以及冷冻时间对钻井液脱水性能的影响，并分析了融解钻井液的沉降性、上清液固含量及过滤速率的变化规律。结果表明：废弃水基钻井液内部温度随着冷冻温度降低而快速达到稳定状态；冷冻温度越低时，融解钻井液沉降速度越快且沉降比越大，但是高温慢冻（T=-6℃）钻井液融解后上层析出液的固含量比低温速冻（T<-6℃）情况下的固含量低；在冷冻温度为-6℃、冷冻时间为48 h情况下，废弃水基钻井液的脱水性能达到最佳，并且上清液固含量最低可达到8.91%；与此同时，冷冻时间不超过31 h时，低温速冻能够促进融解钻井液的过滤，但超过31 h后，高温慢冻的过滤速率更高。
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.
[1]GROWCOCK F,HARVEY T.Drilling fluids processing hand book[M].Burlington:Elsevier,2005.
[2]BAI H,ZHU R,AN H,et al.Influence of wastewater sludge properties on the performance of electro-osmosis dewatering[J].Environmental Technology,2019,40(21):2853-2863.
[3]NJUGUNA J,SIDDIQUE S,KWROFFIE L B,et al.The fate of waste drilling fluids from oil&gas industry activities in the exploration and production operations[J].Waste Management,2022,139:362-380.
[4]ANTIA M,EZEJIOFOR A N,OBASI C N,et al.Environmental and public health effects of spent drilling fluid:an updated systematic review[J].Journal of Hazardous Materials Advances,2022,7:100-120.
[5]王彩林.废弃钻井液随钻无害化处理[D].天津:天津工业大学,2017.
[6]卢俊锋.废弃聚磺钻井液固液相分离及处理研究[D].成都:西南石油大学,2018.
[7]MURUNGI P I,SULAIMON A A.Petroleum sludge treatment and disposal techniques:a review[J].Environmental Science and Pollution Research,2022,29(27):40358-40372.
[8]CHEN L,HUANG M,JIANG X,et al.Pilot tests of microbe-soil combined treatment of waste drilling sludge[J].Natural Gas Industry B,2015,2(2):270-276.
[9]LI B,WEI S,ZHEN Y.An effective recycling direction of water-based drilling cuttings and phosphogypsum co-processing in road cushion layer[J].Environmental Science and Pollution Research,2020,27(14):17420-17424.
[10]杨子健,刘阳生.水基钻井固体废物处理处置技术研究进展[J].环境工程,2021,39(10):143-149.
[11]LI J,LIN F,LI K.A critical review on energy recovery and non-hazardous disposal of oily sludge from petroleum industry by pyrolysis[J].Journal of Hazardous Materials,2021,406:124706.
[12]李斌,孙根行.废弃钻井液脱水工艺实验研究[J].工业安全与环保,2013,39(3):90-93.
[13]陈立荣,冯永东,张志东,等.川渝地区油气勘探水基钻井固废分类资源化处置利用略论[C]//第31届全国天然气学术年会(2019),合肥,10月30日-11月1日,2019:286-292.
[14]YANG J,SUN J,WANG R,et al.Treatment of drilling fluid waste during oil and gas drilling:a review[J].Environmental Science and Pollution Research,2023,30:19662-19682.
[15]ANGIN I,AKSAKAL L E,OZTAS T,et al.Effects of municipal solid waste compost (MSWC) application on certain physical properties of soils subjected to freeze-thaw[J].Soil and Tillage Research,2013,130:13058-13061.
[16]CHEN L C,CHIAN C Y,YEN P S.High-speed sludge freezing[J].Water Research,2001,35:3502-3507.
[17]GAO W.Freezing as a combined wastewater sludge pretreatment and conditioning method[J].Desalination,2010,268(1):170-173.
[18]黄玉成,张维佳,金秋冬,等.自然冷融法对污泥沉降及脱水性能研究[J].安全与环境工程,2008,15(4):43-46.
[19]JEAN D S,LEE D J,WU J C S.Separation of oil from oily sludge by freezing and thawing[J].Water Research,1999,33(7):1756-1759.
基本信息:
DOI：
中图分类号:X741
引用信息:
[1]罗会清,田胡东,李博瀚等.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(03):37-43.
基金信息:
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)