论文部分内容阅读
在金刚石钻进中,由于各种原因引起钻孔的弯曲,目前已普遍引起了人们的重视,正在多方面进行试验和探讨,力图揭示其内在规律,以便更好地为地质勘探事业服务.1979年,中南矿冶学院部分师生与湖南冶金245队一道,在渣滓溪矿区的小口径金刚石钻孔中进行了纠斜和防斜的初步试验,取得了较好的效果.矿区概况(一)地质情况简介施工的钻孔主要穿过砂岩、砂质板岩、砂岩-长石石英砂岩、石英砂岩、粉砂岩,以及经变质作用生成的微石英
In the diamond drilling, due to various reasons, the bending of the borehole has attracted widespread attention and is undergoing tests and discussions in various fields in an attempt to reveal its inherent laws in order to better serve the geological exploration industry. Year, some teachers and students from Zhongnan Mining and Metallurgical Institute, together with Hunan Metallurgy 245 Team, carried out preliminary tests on inclined bore and anti-inclined in the small diameter diamond drilling of the Zhazixi Mining Area and achieved good results. Introduction to the Geological Conditions The boreholes used for construction mainly pass through sandstone, sandy slate, sandstone-feldspar quartz sandstone, quartz sandstone, siltstone, and metamorphosed microliths