NQ Wireline Coring Tool Assembly Conquers Deep-Hole Hard Rock Exploration Challenges to Boost Efficiency for Mineral & Geological Exploration Projects

NQ Wireline Coring Tool Assembly Conquers Deep-Hole Hard Rock Exploration Challenges to Boost Efficiency for Mineral & Geological Exploration Projects

NQ wireline coring tool assembly (NQ core head) is designed in strict compliance with DCDMA international standards. Optimized for complex broken formation conditions in deep mineral exploration, geotechnical engineering investigation and geological scientific drilling, it effectively addresses industry pain points including stuck drilling, core blockage and low core recovery rate in deep-hole drilling, delivering highly reliable coring solutions for geological drilling projects worldwide.

The NQ core head (inner tube assembly overshot head assembly) is integrally forged from 4130 high-strength alloy steel. Key components undergo double-end quenching and tempering heat treatment, while core friction pairs are treated with high-frequency quenching. The hardness of critical contact surfaces reaches above HRC55. The optimized hanger and core catcher seat structure improves retrieving and running stability and greatly reduces the risk of downhole accidents. Matched NQ diamond core bits are applicable to hard rock and fractured strata. In kilometer-level deep-hole wireline coring operations, it substantially raises drilling efficiency and extends tool service life.

Industry statistics show continuous growth in global mineral resource exploration and deep geological survey projects. NQ-size wireline coring tools are the primary choice for small-and-medium diameter deep-hole exploration, widely adopted in metallic mineral exploration, hydrogeological investigation and engineering geological drilling. This iterative upgrade of the NQ core head further bridges the gap in domestic high-end core assemblies for wireline coring, removes operational constraints in complex formations, and meets requirements for mine exploration and overseas geological projects under the Belt and Road Initiative.

CGE Group Wuxi Drilling Tools supplies a full portfolio of supporting products for NQ wireline coring: NQ drill rods, NQ overshots, NQ diamond core bits, NQ inner tube assemblies, casing shoes and reamers. Customization for specific working conditions is available. We provide one-stop drilling equipment packages and technical services for global mining companies, geological survey institutes and drilling engineering contractors. Moving forward, the company will keep upgrading the full BQ/NQ/HQ/PQ series of wireline coring tools, empowering the localization and global export of deep earth exploration equipment.