Performing drilling operations to explore and exploit oil and gas reservoirs by injection wells is one of the most essential pillars of the oil industry. Hence, the improvement of drilling mud properties has a particular role. In this research, a laboratory study was carried out on the effect of nano additive on rheological properties of drilling mud. The ZnTiO₃ nanoparticles were synthesized and analyzed by XRD, EDX, and SEM to identify and verify the structure of particles in the nanoscale. Then, the effect of adding nanoparticles to water-base mud is discussed. To determine the rheological behavior of the mud, the viscosity tests were applied. To study the operational conditions on the performance of mud containing nanoparticles, the rheological tests were performed on samples containing 0, 0.5, and 1wt% of ZnTiO₃ nanoparticles in the presence of 0, 2, 4wt% of KCl salt at 25°C and 90°C. The results indicated that the addition of 1wt% ZnTiO₃ nanoparticles, even in the presence of 2 and 4% salt, could increase water-based mud viscosity up to 34.88% and 37.73%, at 25°C and 32.16% and 30.76% at 90°C, respectively. It was well able to maintain the shear-thinning behavior of mud contained nanoparticles at different shear rates. The optimum sample was finalized based on a rheological study with 5wt% bentonite, 2wt% salt, and 1wt% ZnTiO₃ nanoparticles. Performing filtration test on the optimal sample, using a filter press machine based on the American Petroleum Association Standard, it was confirmed that the addition of 1wt% ZnTiO₃ nanoparticles to mud was reduced the volume of fluid loss by about 7.7%. Finally, all results of mud samples viscosity were fitted with plastic Bingham, Herschel-Bulkley, and Power-law models. Through Herschel-Bulkley, and Power-law models could reasonably predict the rheological behavior of mud contained nanoparticles.

进行钻探作业以通过注入井勘探和开发油气储层是石油工业最重要的支柱之一。因此，改善钻井泥浆的性质具有特殊的作用。在这项研究中，对纳米添加剂对钻井泥浆流变性质的影响进行了实验室研究。ZnTiO ₃合成了纳米颗粒，并通过XRD，EDX和SEM分析，以鉴定和验证纳米级颗粒的结构。然后，讨论了将纳米颗粒添加到水基泥浆中的效果。为了确定泥浆的流变行为，应用了粘度测试。为研究含泥纳米颗粒性能的操作条件，在25°C和0、2、4wt ％的KCl盐存在下，对含有0、0.5和1wt％ZnTiO ₃纳米颗粒的样品进行了流变测试。90℃。结果表明，添加了1wt％的ZnTiO ₃即使在存在2％和4％的盐的情况下，纳米颗粒也可以将水基泥浆的粘度分别在25°C和90°C分别提高至34.88％和37.73％，分别提高至32.16％和30.76％。它能够很好地保持不同剪切速率下含泥浆纳米颗粒的剪切稀化行为。基于流变学研究，使用5wt％的膨润土，2wt％的盐和1wt％的ZnTiO ₃纳米颗粒，确定了最佳样品。使用美国石油协会标准的压滤机对最佳样品进行过滤测试，确定添加了1wt％的ZnTiO ₃纳米颗粒使泥浆的失水量减少了约7.7％。最后，所有的泥浆样品粘度结果都用塑料Bingham，Herschel-Bulkley和Power-law模型拟合。通过Herschel-Bulkley和Power-law模型，可以合理地预测含纳米颗粒泥浆的流变行为。