Research and application of drilling construction technology for loose and broken formations
The Dabaoshan copper polymetallic deposit in Guangdong Province is located in the central and southern part of the Nanling metallogenic belt,with a developed geological structure,broken rocks,many soft and hard in-terlayers,and complex borehole structure,which is prone to accidents such as block drop and stuck buried drilling.In view of the construction difficulties in the mining area,the problems encountered in the construction of loose and broken formations were effectively solved by optimizing the drilling technology,reasonable drilling tool grading,and adopting low solid drilling fluid wall protection technology.At the same time,through the scientific and reason-able organization of construction,the formulation of a feasible project construction management plan,get a better drilling effect,successfully complete the drilling construction task,and achieve good economic and social benefits,which has a certain reference significance for other similar formation drilling construction.
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