Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid
Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid
复制标题
三七皂苷作为水基钻井液中环保型页岩抑制剂
DOI：
10.1016/j.petsci.2021.11.017
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发表时间：
2022-04-01
影响因子：
5.6
通讯作者：
Zhang, Xian-Fa
中科院分区：
文献类型：
--
作者：
Sun, Jin-Sheng;Wang, Zong-Lun;Zhang, Xian-Fa
钻探行业对无毒和可生物降解的页岩抑制剂的需求正在增长。本文首次系统地研究了三七皂苷(NS)作为一种新型的环保型页岩水化抑制剂的作用效果。通过缓蚀评价试验，包括泥球浸泡试验、线膨胀试验、页岩滚动回收试验和抗压强度试验，评价了NS的缓蚀性能。采用傅立叶变换红外光谱(FTIR)、接触角测定、粒度分布测定、热重分析(TGA)、扫描电子显微镜(SEM)等手段对NS的缓蚀机理进行了分析。实验结果表明，NS能够附着在粘土表面，形成一层疏水膜，阻止水分子进入粘土表面，抑制粘土的水化分散。正因为如此，NS可以保持膨润土颗粒在水中的原始状态，有效地降低膨润土的膨胀率，提高页岩钻屑的回收率，保持页岩的强度，从而在钻井过程中保持井壁的稳定性。此外，NS无毒、可降解，与水基钻井液相容。上述优点使NS成为一种环境友好型页岩缓蚀剂，前景看好。？？2021作者。爱思唯尔公司代表科爱通信有限公司发布服务。这是CC BY-NC-ND许可证(http://creativecommons.org/licenses/by-nc-nd/4.0中的一篇开放获取文章。
The demand for non-toxic and biodegradable shale inhibitors is growing in the drilling industry. In this paper, the effect of notoginsenoside (NS) as a new, environmentally friendly inhibitor of shale hydration is systematically studied for the first time. The inhibition performance of NS was evaluated via inhibition evaluation tests, including mud ball immersion tests, linear expansion tests, shale rolling recovery tests, and compressive strength tests. The inhibition mechanism of NS was analyzed using Fourier transform infrared spectroscopy (FTIR), contact angle measurements, particle size distribution determination, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The experimental results demonstrate that NS is able to adhere to the clay surface, forming a hydrophobic film that prevents the entry of water molecules and inhibiting the hydration dispersion of the clay. Because of this, NS can maintain the original state of bentonite pellets in water, which can effectively reduce the swelling rate of bentonite, increase the recovery rate of shale drill cuttings, maintain the strength of the shale, and therefore maintain the stability of the borehole wall during drilling. In addition, NS is non-toxic, degradable, and compatible with water-based drilling fluids. The above advantages make NS a promising candidate for use as an environmentally friendly shale inhibitor. ?? 2021 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).