Which of the following is NOT a component of drilling fluid?

The correct response indicates that granules are not typically classified as a component of drilling fluid. Drilling fluid, often referred to as mud, is primarily composed of several key components, each serving distinct roles.

The base fluid forms the foundation of the drilling mud and is usually water or oil. Solids are particulate materials that are added to the base fluid to enhance its properties, such as viscosity and density. Additives are chemical substances introduced to modify the drilling fluid's performance, catering to specific geological conditions or operational requirements.

Granules, while they might refer to granular materials, do not represent the standardized components categorized in drilling fluids. Furthermore, typical components like base fluids, solids, and additives are vital for the effectiveness of the drilling operation, managing wellbore stability, lubricating the drill bit, and hauling cuttings to the surface, among other functions. Therefore, identifying granules as not part of these established categories reflects an understanding of the composition and purpose of drilling fluids in the drilling process.