Core drilling constitutes an indispensable component of geological work. In mineral exploration, it directly reveals information regarding the subsurface burial of ore bodies at great depths; in engineering construction, it facilitates an understanding of geological conditions along a project alignment, thereby enabling targeted remedial measures; in the study of Earth's evolutionary history, ancient core samples reveal geological conditions from prehistoric eras; and in groundwater exploration, it aids in characterizing the distribution, thickness, and water quality of subsurface aquifers, thereby providing a basis for the rational development, utilization, and conservation of groundwater resources.
Core drilling also finds application in the exploration of shallow-depth petroleum, coalbed methane, and shale gas.
By advancing the standardization of drilling rigs, implementing fixed-position management of equipment, optimizing drilling techniques, and developing automated and intelligent drilling machinery, it is possible to significantly enhance operational proficiency and the quality of core recovery. For instance, by employing wireline double-tube core barrels in conjunction with eco-friendly drilling fluids, the core recovery rate can be boosted from 80% to over 95%.