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非常规油气藏压裂返排液回用除硼室内研究

Journal of Xi'an Shiyou University(Natural Science)(2017)

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Abstract
将返排液处理后用于配制压裂液是一种经济有效的途径.返排液中含有的硼会影响瓜胶类压裂液的重新配制,外排则可能污染生态环境.采用硼选择性树脂对返排液(经过混凝、化学沉淀、过滤等前期处理)进行除硼处理.实验结果显示:(1)树脂除硼的最佳条件为:pH值调节为8.0、固液比为1∶15,在100 r/min的搅拌下反应30 min;(2)返排液处理后,硼质量浓度由原来的12.15 mg/L降为0.26 mg/L,去除率可达到97.86%;(3)处理后水可用于滑溜水和瓜胶压裂液体系的配制,其性能符合SY/T 6376-2008《压裂液通用技术条件》的技术要求.
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boron removal technology for fracturing flowback liquid,resin,slippery water fracturing liquid,guar gum fracturing liquid
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