Wellbore stability refers to the ability of a drilled hole, or wellbore, to maintain its shape and integrity during and after drilling. Factors such as rock properties, fluid pressure, and drilling techniques can influence stability. If a wellbore collapses or experiences failure, it can lead to costly delays and safety hazards. To ensure wellbore stability, engineers often use techniques like mud weight adjustments and casing installation. Proper management of these factors helps prevent issues like caving or blowouts, which can compromise the drilling process and the safety of personnel involved.