On Drilling Construction in Broken Formation in Kaihua Waijidi Mining Area and the Study on Some Technical Problems
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摘要: 外际底矿区地层复杂,岩石破碎,前期钻孔施工中普遍存在浅部铁帽型矿体采心难、钻孔弯曲度测量难以把握、冲洗液配制环保要求高等施工难点问题。针对矿区地质和施工条件制定复杂地层钻进技术方案,并依据勘查对象的地质特点,不断完善钻进工艺和操作水平,满足地质要求,从而提高了地质信息的可靠性,确保了矿区勘查目标的实现。Abstract: In Waijidi mining area, the formation is complex with broken rocks.At the early stage of drilling construction, there is common existence of coring difficulties in shallow gossan type orebody, borehole curvature degree measuring, high requirements of environmental protection for flushing fluid preparation.Drilling scheme for complicated formation was made according to the geological and construction conditions, and based on the geological characteristics of exploration target, drilling process and operation were improved to meet the needs of geological work, enhance the reliability of the geological information and ensure the realization of mining exploration target.
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Key words:
- broken formation /
- core recovery /
- borehole deviation /
- drilling technology /
- Kaihua Waijidi mining area
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