深井填砾工艺关键技术探讨  

Discussion on Key Technology of Gravel-filling for Deep Well

作　　者：景龙[1] 王彦静[1] 徐树[1] 常林祯[1] 

机构地区：[1]河北省地矿局第四水文工程地质大队,河北沧州061000

出　　处：《探矿工程（岩土钻掘工程）》2010年第10期51-55,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：在河北平原新近系地热井施工时采用填砾工艺具有防砂、稳定孔壁的优点,但具有一定的施工难度。通过实践应用提出了管孔径级配方案,总结了终孔替浆工艺,分析并论证了填砾数量计算方法、填砾速度的确定原则及静水填砾方法的可行性。In the construction of geothermal well in neogene in Hebei plain,gravel-filling technology was adopted with the advantages of sand control and borehole wall stability.Based on the practice,the paper put forward the gradation scheme for pipe diameters,summed up the mud replacement technology and analyzed the calculation method for gravel-filling quantity,principle of gravel-filling speed and the feasibility of static water gravel-filling.

关 键 词：地热井 深井填砾 河北平原 新近系 

分 类 号：TE249[石油与天然气工程—油气井工程]