国产CNH（T）绳索取心钻杆在中国岩金勘查第一深钻工程中的应用分析

Analysis on the Application of China-made CNH（T） Wire-line Drill Pipe in the First Deep Drilling Engineering Construction by China Rock Gold Exploration

摘要:

针对国产绳索取心钻杆在中国岩金勘查第一深钻ZK96-5钻孔工程施工中的实际应用，结合我国现有管材规格及材质、热处理能力和机加工精度等实际情况，对目前在深部和复杂地层钻进中使用的CNH（T）规格（φ71 mm口径）绳索取心钻杆的结构、接手和螺纹的扣形及尺寸等方面的优缺点进行分析和总结。实践证明，国产绳索取心钻杆具有较高的强度、较长的使用寿命和较高的可靠性，能够较好地适应深部钻探，在ZK96-5钻孔施工中最大使用深度3310余米，有利于绳索取心深部钻探技术的推广和应用。

Abstract:

According to the practical application of China-made wire-line coring drill pipe in ZK96-5 of the first deep drilling engineering construction by China Rock Gold Exploration and combined with the actual situation of existing drilling tubing specifications and materials, heat treatment and machining precision, the analysis and the summery are made on the advantages and disadvantages of CNH（T）wire-line drill pipe with 71mm in diameter about the structure, joint, thread button shape and size. The practice proves that this China-made wire-line core drilling tool is suitable to deep drilling with high strength, long service life and high reliability. In the construction of ZK96-5, the maximum depth has reached to more than 3310 meters.