Drilling Technology for Coalmine Cooling Well with Diameter over 1000m

Abstract:

Heat harm is a disaster in deep coal mining; ice cooling well is the channel for cooling cold medium conveying to downhole from the ground and is one of the important systems for realizing downhole cooling. Base on the engineering case of a group of cooling wells with the diameter over 1000m by Hongyang 3th coalmine in Shenyang, the paper introduces the construction purpose of the coalmine cooling well, the drilling process and the well completion technology.