Research on Drilling Construction Technology of Yanfengqian Bauxite Mine in Guizhou Province
During the implementation of the Yanfengqian bauxite project in Guizhou,siliceous rock layers were encountered during drilling,and the drilling cuttings generated during the drilling process were not easily discharged in the drilling fluid leakage section,leading to phenomena such as buried drilling,stuck drilling,and lack of core.By optimizing the drilling structure,selecting drilling parameters reasonably,and using a combination of pipe drilling and rope coring technology,the problem of wall protection when crossing karst caves has been effectively solved,greatly improving the drilling rate when encountering karst caves.The use of polymer gel wall protection and plugging reduces the occurrence of block falling and sticking in broken formations.Improved drilling efficiency and saved drilling costs.By using long casing to pass through karst caves,the amount of scrap work has been reduced and the work progress has been improved.Through the implementation of a series of technical measures,the project construction task was completed on schedule.This article summarizes the construction experience of the mining area,hoping to provide reference for drilling construction in similar mining areas.
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