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刘自广, 宋丰博, 尤志良, 卓绿燕, 彭云涛, 项春芬, 蒋官澄. 基于改性植物多酚的高温高密度环保型水基钻井液[J]. 钻井液与完井液, 2021, 38(3): 285-291. doi: 10.3969/j.issn.1001-5620.2021.03.004
引用本文: 刘自广, 宋丰博, 尤志良, 卓绿燕, 彭云涛, 项春芬, 蒋官澄. 基于改性植物多酚的高温高密度环保型水基钻井液[J]. 钻井液与完井液, 2021, 38(3): 285-291. doi: 10.3969/j.issn.1001-5620.2021.03.004
LIU Ziguang, SONG Fengbo, YOU Zhiliang, ZHUO Lyuyan, PENG Yuntao, XIANG Chunfen, JIANG Guancheng. A high-temperature and High-Density Environmentally-Friendly Water-Based Drilling Fluids Based on Modified Plant Polyphenols[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(3): 285-291. doi: 10.3969/j.issn.1001-5620.2021.03.004
Citation: LIU Ziguang, SONG Fengbo, YOU Zhiliang, ZHUO Lyuyan, PENG Yuntao, XIANG Chunfen, JIANG Guancheng. A high-temperature and High-Density Environmentally-Friendly Water-Based Drilling Fluids Based on Modified Plant Polyphenols[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(3): 285-291. doi: 10.3969/j.issn.1001-5620.2021.03.004

基于改性植物多酚的高温高密度环保型水基钻井液

doi: 10.3969/j.issn.1001-5620.2021.03.004
详细信息
    作者简介:
  • 中图分类号: TE254.3

A high-temperature and High-Density Environmentally-Friendly Water-Based Drilling Fluids Based on Modified Plant Polyphenols

  • 摘要: 为提高环保型水基钻井液的耐温性能和密度上限,通过对天然多酚类植物提取物进行接枝改性,分别研制了降滤失剂EHT-FL和分散剂EHT-TH,并利用红外光谱对2种合成产物进行了表征。室内性能评价结果表明,降滤失剂EHT-FL和分散剂EHT-TH均具有良好的抗高温性能,且EC50分别达2.38×105 mg/L和4.49×105 mg/L,无生物毒性;EHT-FL加量为2.0%时,淡水基浆在200℃老化后的中压滤失量和高温高压滤失量分别为7.2 mL和23.6 mL;EHT-TH加量为1.0%时,高密度水基钻井液(ρ=2.0 g/cm3)在200℃老化后的表观黏度由106.5 mPa·s降低至66.5 mPa·s,高温增稠现象消失。在降滤失剂EHT-FL和分散剂EHT-TH的基础上,配伍其他环境友好型处理剂,研制出一套抗高温高密度(ρ=2.0 g/cm3)环保型水基钻井液体系。该体系具有合理的流变与滤失性能,抗温达210℃,抗盐侵25%,抗钙侵1%,抗劣质土侵10%,EC50为4.19×104 mg/L,BOD5/CODCr为29.23,重金属含量低于标准值,对环境友好,能满足深井复杂地层钻井的需求。

     

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  • 收稿日期:  2021-02-07

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