Application of sustainable saffron purple petals as an eco-friendly green additive for drilling fluids: A rheological, filtration, morphological, and corrosion inhibition study
Application of sustainable saffron purple petals as an eco-friendly green additive for drilling fluids: A rheological, filtration, morphological, and corrosion inhibition study
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DOI：
10.1016/j.molliq.2020.113707
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发表时间：
2020-10-01
影响因子：
6
通讯作者：
Arjmand, Mohammad
中科院分区：
文献类型：
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作者：
Ghaderi, Saeed;Haddadi, Seyyed Arash;Arjmand, Mohammad
在这项研究中，干紫菀紫花瓣（SPP）粉末的流变性，滤失量和缓蚀性能的膨润土基钻井液的影响进行了检查。制备了不同SPP含量的钻井液，并通过旋转粘度计和流变力学谱（RMS）研究了其流变行为。用幂律、宾汉塑性和Herschel-Bulkley模型对旋转粘度计的结果进行了拟合，并将所得数据与基础泥浆的数据进行了比较。所有模型均能很好地拟合旋转粘度计的数据，决定系数均大于0.93。与基础泥浆相比，3wt%的SSP在流体中的存在显著提高流体的屈服应力和稠度指数，分别为223.3%和94.4%。过滤性能和滤饼形成结果证实了含有3wt%SPP粉末的流体的渗透阻挡行为提高了45%。电化学阻抗测量表明，与对照样品相比，在存在3重量% SPP粉末的情况下，低碳钢的总阻抗从299 Ω cm（2）增加到39，800 Ω cm（2）。此外，动电位极化曲线表明SPP粉末的混合型缓蚀机理，在存在3 wt% SPP粉末的情况下，腐蚀速率为0.004mm年（-1），缓蚀效率为96.5%。低碳钢板在SPP填充液中浸泡后的表面形貌表明，在金属表面形成了缓蚀层，阻碍了阳极和阴极反应的进行，而在基泥中浸泡的板则形成了大量的锈层和腐蚀产物。此外，将SPP作为有机绿色添加剂不会对周围环境和生态系统造成破坏性影响。(C)2020 Elsevier B. V.保留所有权利。
In this study, effects of dried saffron purple petals (SPP) powder were examined on the theological, fluid loss, and corrosion inhibition properties of bentonite-based drilling fluids. Drilling fluids containing different amounts of the SPP powder were prepared and their theological behavior was investigated via the rotary viscometly and rheometric mechanical spectroscopy (RMS). Rotary viscometer results were fitted with Power-law, Bingham plastic, and Herschel-Bulkley models and the obtained data were compared with that of the base mud. All models fitted the rotary viscometer data with the determination coefficients higher than 0.93. The presence of 3 wt% of the SSP in the fluid significantly improved the fluid's yield stress and consistency index by 223.3% and 94.4%, respectively compared to those of the base mud. The filtration performance and cake formation results confirmed a 45% enhancement in the permeation barrier behavior of the fluid containing 3 wt% SPP powder. Electrochemical impedance measurements illustrated that the total impedance of the mild steel increase from 299 to 39,800 Omega cm(2) in the presence of 3 wt% SPP powder compared to the control sample. Additionally, potentiodynamic polarization plots indicated a mixed-type inhibition mechanism for the SPP powder with the corrosion rate of 0.004 mm year(-1) and inhibition efficiency of 96.5% in the presence of 3 wt% SPP powder. The morphology of mild steel plates immersed in SPP filled fluids demonstrated the formation of corrosion inhibitive layers on the metallic surface, which hindered the anodic and cathodic reactions while a considerable amount of rusts and corrosion products formed for the plate immersed in the base mud. Furthermore, having SPP as an organic green additive would leave no damaging effects on the surrounding environment and ecosystem. (C) 2020 Elsevier B.V. All rights reserved.