Investigation of inhibition mechanism of three deep eutectic solvents as potential shale inhibitors in water-based drilling fluids
Investigation of inhibition mechanism of three deep eutectic solvents as potential shale inhibitors in water-based drilling fluids
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DOI：
10.1016/j.fuel.2019.02.018
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发表时间：
2019-05-15
期刊：
影响因子：
7.4
通讯作者：
Lv, Kaihe
中科院分区：
文献类型：
--
作者：
Jia, Han;Huang, Pan;Lv, Kaihe
合成了三种不同的低共熔溶剂CM-DES、CP-DES和CIM-DES，并研究了它们作为页岩抑制剂的新用途。通过膨润土抑制试验、线性膨胀试验、页岩岩屑热滚分散试验等，与传统缓蚀剂KCl和目前流行的缓蚀剂聚醚二胺（PDA）进行了缓蚀性能评价和对比。3种DES在较低浓度下均表现出显著的缓蚀性能，即使在高温（160 ℃）下也表现出较好的缓蚀性能。结合扫描电镜、Zeta电位、表面张力、热重分析和X射线衍射分析结果，认为DESs的优异缓蚀性能可能是由于DESs与粘土之间的静电引力和氢键作用，且DESs的结构不同导致其缓蚀能力不同。合成的DES具有良好的抑制性能，在水基钻井液中具有潜在的应用前景。
Three different deep eutectic solvents CM-DES, CP-DES and CIM-DES were synthesized and investigated for their novel use as shale inhibitors. Their inhibitive properties were evaluated and compared with traditional inhibitor KCl and currently popular inhibitor polyether diamine (PDA) through the inhibition tests such as bentonite inhibition test, linear swelling test, shale cuttings hot-rolling dispersion test, etc. All three DESs presented remarkable inhibition performance with lower concentrations and performed quite well even at high temperature (160 degrees C). Based on the results of scanning electron microscopy, Zeta potential measurement, surface tension measurement, thermogravimetric analysis and X-ray diffraction analysis, we proposed that the great inhibitive properties of DESs were probably attributed to the electrostatic attraction and hydrogen bond between DESs and clay, and the different structures of DESs resulted in different inhibitive capacity. With the excellent inhibitive properties, the synthesized DESs demonstrated potential application as effective shale inhibitors in water-based drilling fluids.