Efficient hole cleaning in drilling operations is essential to ensure optimum penetration rates. This complex problem involves the simultaneous analysis of multiple parameters, including cuttings characteristics, fluid rheology, and annulus space geometry. The effect of the mud density increase due to the cuttings concentration, which itself is a function of the settling velocity and rate of penetration (ROP), must be considered for accurate calculations of the equivalent circulation density (ECD).

Mechanical Specific Energy (MSE) models have been widely used in bit selection, drilling efficiency quantification, drilling performance monitoring, drilling performance optimization, and ROP improvement. We attempted to employ MSE for optimized hole cleaning and controlled ECD. Cuttings concentration was integrated with the drilling MSE, which was calculated to determine the effect of different drilling parameters on hole cleaning and ECD. We proposed a new model for predicting the ECD in vertical and deviated wellbores that takes fluid and formation properties, as well as wellbore and drill string geometry and drilling operational parameters, into account. The model predicts the cuttings concentration and equivalent circulation density in vertical and deviated wells. The workflow implements the critical and settling velocity models, which aids in optimizing drilling performance and hole cleaning. The developed model was used to study the effect of different drilling parameters on ECD and help engineers optimize their operational parameters. Integrating the drilling operational parameters to provide controlling options to drillers as they monitor ECD values while maintaining safety and optimizing the drilling job is critically important.

钻孔操作中的高效孔清洁对于确保最佳穿透率至关重要。这个复杂的问题涉及同时分析多个参数，包括岩屑特征、流体流变学和环空空间几何形状。岩屑浓度本身是沉降速度和渗透率 (ROP) 的函数，因此必须考虑泥浆密度增加的影响，以便准确计算等效循环密度 (ECD)。

机械比能 (MSE) 模型已广泛应用于钻头选择、钻井效率量化、钻井性能监测、钻井性能优化和 ROP 改进。我们尝试使用 MSE 来优化孔清洁和控制 ECD。岩屑浓度与钻孔 MSE 相结合，计算得出不同钻孔参数对孔清洁和 ECD 的影响。我们提出了一种新模型，用于预测垂直井筒和斜井筒中的 ECD，该模型考虑了流体和地层特性，以及井筒和钻柱几何形状以及钻井操作参数。该模型预测了直井和斜井中的岩屑浓度和当量循环密度。该工作流实现了关键和沉降速度模型，这有助于优化钻孔性能和孔清洁。开发的模型用于研究不同钻井参数对 ECD 的影响，并帮助工程师优化其操作参数。集成钻井操作参数以在钻井人员监控 ECD 值时为他们提供控制选项，同时保持安全和优化钻井作业至关重要。