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In fields such as geological exploration and mineral development, drilling is the key to obtaining subsurface information. As a core equipment, the wireline core bit, with its unique design and excellent performance, effectively ensures efficient and precise drilling operations.

Wireline core drilling is a method of taking core samples with few or no drill string trips. A special wireline retrieval tool is used to retrieve the bottom-hole inner tube filled with core samples to the surface through the central hole of the drill string in the borehole. This greatly reduces the auxiliary time of tripping in and out of the drill string, achieving high drilling speed, long diamond bit life, high time utilization rate, and low labor intensity.

The rod body of the wireline core bit commonly uses 42MnMoB material, and the joint uses 30CrMnSiA material. It adopts an asymmetrical thread connection and is processed on a CNC lathe to ensure precision and interchangeability. It is widely applied in fields such as geological prospecting and coalfield exploration, helping to obtain crucial information.

China has been researching and applying wireline core drilling technology since the 1970s, and significant progress has been made in technology and equipment. Nowadays, researchers are focusing on improving the connection strength of drill pipes, developing high-speed and long-life drill bits, and promoting the research of technologies such as bottom-hole bit change, continuously enhancing the overall level and providing better solutions for related industries.