河南某地热井管挤毁事故分析及处理  

Analysis and Treatmenton a Collapse Accident of Geothermal Well Pipe in Henan

作　　者：张秋冬[1,2] 卢予北[2] 吴青松[2] 赵建粮[2] 

机构地区：[1]中国地质大学〈武汉〉,湖北武汉430074 [2]河南省地矿局第二水文地质工程地质队,河南郑州450053

出　　处：《探矿工程（岩土钻掘工程）》2009年第3期18-20,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：中原地区地热井成井中使用的过滤管大多为桥式过滤管,在下管过程中,如果泥浆性能不均匀或者管内灌浆不及时等,使得管内外压力不平衡,而当该压力超过过滤管的抗挤强度后就容易造成过滤管挤毁事故的发生。针对河南某地热井下管中发生的过滤管挤毁事故,分析造成该类事故的原因及在成井过程中应注意的问题。Most of the filter pipes used in geothermal well in the central plains area is bridge ones. During pipe lowering, the pressures inside and outside the pipe would be unbalanced with unsteady mud property and not-in-time grouting; and collapse accident would occur with overpressure. Analysis was made on a collapse accident of filter pipe lowering in geothermal well in Henan.

关 键 词：地热井 过滤管 挤毁事故 

分 类 号：TE249[石油与天然气工程—油气井工程]