超千米大直径煤矿降温井钻井技术

超千米大直径煤矿降温井钻井技术2014年第41卷第1期探矿工程(岩土钻掘工程)37超千米大直径煤矿降温井钻井技术白领国，袁志坚(1．河南省煤田地质局四队，河南平顶山467000；2．河南省煤田地质局，河南郑州450018)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。关键词：煤矿降温井；防斜保直；冲洗液；钻具组合；钻进参数；下管技术；固井中图分类号：P634．5文献标识码：B文章编号：1672—7428(2014)01—0037—03DrillingTechnologyforCoalmineCoolingWellwithDiameteroverIO00m／BAILing—guo，YUANZhi-jian(1．The4thTeam，CoalfieldGeologyBureauofHenanProvince，PingdingshanHenan467000，China；2．CoalfieldGeologyBureauofHenanProvince，ZhengzhouHenan450018，China)Abstract：Heatharmisadisasterindeepcoalmining；icecoolingwellisthechannelforcoolingcoldmediumconveyingtodownholefromthegroundandisoneoftheimportantsystemsforrealizingdownholecooling．BaseontheengineeringcaseofagroupofcoolingwellswiththediameteroverlO00mbyHongyang3thcoalmineinShenyang，thepaperintroducestheconstructionpurposeofthecoalminecoolingwell，thedrillingprocessandthewellcompletiontechnology．Keywords：coalminecoolingwell；deviationcontrol；flushingfluid；bo