超千米大直径煤矿降温井钻井技术

Drilling Technology for Coalmine Cooling Well with Diameter over 1000m

摘要:

热害是深部煤矿开采中的一个灾害，煤矿送冰降温井是地面至井下输送降温冷介质的通道，是实现矿井井下降温的关键系统之一。结合沈煤集团红阳三矿一组超千米大直径降温井工程实例，介绍了煤矿降温井的施工目的及钻井和完井工艺技术。

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.