In this study, effects of dried saffron purple petals (SPP) powder were examined on the rheological, fluid loss, and corrosion inhibition properties of bentonite-based drilling fluids. Drilling fluids containing different amounts of the SPP powder were prepared and their rheological behavior was investigated via the rotary viscometry 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 Ω cm² 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.

在这项研究中，研究了干藏红花紫色花瓣（SPP）粉末对基于膨润土的钻井液的流变，流体损失和缓蚀性能的影响。制备了包含不同量的SPP粉末的钻井液，并通过旋转粘度法和流变力学光谱（RMS）研究了它们的流变行为。旋转粘度计的结果与Power-law，Bingham塑料和Herschel-Bulkley模型拟合，并将获得的数据与基础泥浆的数据进行比较。所有型号均符合旋转粘度计数据，测定系数高于0.93。与基础泥浆相比，流体中3 wt％的SSP的存在分别显着提高了流体的屈服应力和稠度指数223.3％和94.4％。过滤性能和滤饼形成结果证实了含有3 wt％SPP粉末的流体的渗透屏障行为提高了45％。电化学阻抗测量表明，低碳钢的总阻抗从299增加到39,800Ωcm²在3％（重量）SPP粉末的存在相比于对照样品。另外，电位动力学极化图指示了对于SPP粉末的混合型抑制机理，在3wt％的SPP粉末存在下，其腐蚀速率为0.004mm year ^-1，抑制效率为96.5％。浸入SPP填充液中的低碳钢板的形态表明，在金属表面上形成了腐蚀抑制层，这阻碍了阳极和阴极反应，而浸入基础泥浆中的钢板形成了大量的锈蚀和腐蚀产物。此外，将SPP用作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。