What describes a Combination Socket best?

A Combination Socket is primarily designed to facilitate the recovery of the drilling stem during drilling operations. It is essential in scenarios where a drill string needs to be retracted, and this tool effectively connects to various types of equipment within a drilling setup. By allowing for a secure connection to the stem, it aids in the safe and efficient withdrawal of the drilling assembly from the borehole. Understanding the fundamental purpose of the Combination Socket provides clarity on its critical role in drilling processes, particularly in cable tool drilling applications where managing the drilling stem is vital for progress and safety.

The other options refer to tools with distinct functions that are not related to the primary role of a Combination Socket. For example, tools that grip irregular objects are designed for handling rather than recovering equipment, measuring tools focus on gauging water levels rather than mechanical aspects of drilling, and support structures for well screens pertain to stabilization and filtration in well construction—not the retrieval of drilling apparatus.