What is the function of a core-barrel in drilling?

The function of a core-barrel in drilling is primarily to collect soil samples from the earth. When drilling into the ground, the core-barrel allows for the extraction of cylindrical sections of soil, rock, or sediment, known as core samples. This is essential for geological studies, as it provides valuable information about the subsurface composition and structure. The sampling process enables geologists and engineers to analyze what lies beneath the surface, including the types of materials present and their physical properties.

While the other functions mentioned might relate to various aspects of drilling or geological studies, they do not accurately describe the primary role of a core-barrel. Collecting soil samples is fundamental for exploration and helps in decision-making regarding construction, resource management, and environmental assessments.