In drilling operations, there has been a considerable amount of attention to the drilling fluid formulation and characteristics. In recent years, the utilization of nanocomposite as an additive exhibited a promising improvement in the water-based drilling fluid rheological properties. The conventional additives have a lot of deficiencies such as being expensive, complicated synthesis methods, and not having desirable rheology properties. To eliminate the deficiencies, an investigation on the efficacy of Fe₃O₄- carboxymethyl cellulose (CMC) nanocomposite on the rheological and filtration characteristics as an additive in the water-based drilling fluid are carried out in this study. The nanocomposite was synthesized by the co-precipitation method and Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive x-ray was employed for characterization. Then, the nanocomposite with different ratio was utilized as an additive to drilling fluid and the rheological and filtration properties of fluid was measured for both deionized water and salty water. The results show that by adding 57% of 1:3 Fe₃O₄-CMC nanocomposite ratio to basic drilling fluid, in addition to considerable improvement in the viscosity, the filtration volume and cake thickness decreased noticeably. This formulation depicts non-Newtonian rheological behavior which could be illustrated properly by Herschel–Bulkley rheological model. Thus, exploitation of Fe₃O₄-CMC nanocomposite as an additive in water-based drilling fluid for fluid loss control would have advantageous due to its distinctive properties like enhanced resistance to water penetration and enhanced viscosity in both deionized water and salty water. In addition, the Fe₃O₄-CMC nanocomposite has superior properties such as uncomplicated synthesis method and being financially available in comparison to conventional additives.

在钻井作业中，已经对钻井液的配方和特性给予了相当大的关注。近年来，利用纳米复合材料作为添加剂在水基钻井液的流变性质方面显示出令人鼓舞的改进。常规添加剂具有许多缺陷，例如昂贵，合成方法复杂以及不具有所需的流变性。为了消除这些缺陷，对Fe ₃ O ₄的功效进行了研究。-在羧甲基纤维素（CMC）纳米复合材料上的流变和过滤特性作为添加剂在水基钻井液中进行了研究。通过共沉淀法和傅里叶变换红外光谱，X射线衍射，扫描电子显微镜和能量色散X射线表征了纳米复合材料。然后，将具有不同比例的纳米复合材料用作钻井液的添加剂，并测量了去离子水和咸水的流变和过滤性能。结果表明，通过添加57％的1：3 Fe ₃ O ₄-CMC纳米复合材料与基本钻井液的比例，除了粘度显着提高外，过滤体积和滤饼厚度也显着降低。此公式描述了非牛顿流变行为，可以通过Herschel-Bulkley流变模型正确说明。因此，由于Fe ₃ O ₄ -CMC纳米复合材料在水基钻井液中的添加而用于失水控制，因此其具有独特的性能，如增强的耐水渗透性和去离子水和咸水的粘度，因此具有优势。另外，Fe ₃ O ₄-CMC纳米复合材料具有优异的性能，例如简单的合成方法，并且与常规添加剂相比具有经济优势。