多工艺联合洗井和抽水试验在CGSD-01井中的应用  

Application of multi-process combined well flushing and pumping test in Well CGSD-01

作　　者：陈浩文[1] 宋志彬[1] 和国磊[1] 李胜涛[2] 许本冲[1] 马汉臣 杜垚森[1] 殷国乐 CHEN Haowen;SONG Zhibin;HE Guolei;LI Shengtao;XU Benchong;MA Hanchen;DU Yaosen;YIN Guoyue(The Institute of Exploration Techniques,CAGS,Langfang Hebei 065000,China;Center for Hydrogeology and Environmental Geology,CGS,Baoding Hebei 071051,China)

机构地区：[1]中国地质科学院勘探技术研究所,河北廊坊065000 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《探矿工程（岩土钻掘工程）》2019年第6期8-13,25,共7页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查项目“京津石地热资源调查(中国地质科学院勘探技术研究所)”(编号:DD20179032);“天津潘庄凸起构造区地热资源调查(中国地质科学院勘探技术研究所)(编号:DD20179622)

摘　　要：天津东丽湖CGSD-01井为地热勘探井,设计井深4000m,完钻井深4051.68m。为最大程度清理钻井过程中对含水层的堵塞,本井采用了焦磷酸钠洗井、压缩空气洗井和酸化洗井3种工艺方法联合洗井,并先后进行2次抽水试验。联合抽水试验表明多工艺联合洗井效果理想。本文主要阐述了CGSD-01井洗井及抽水试验实施工艺,以期为今后同类研究及施工提供有益的借鉴。The CGSD-01 well is a geothermal exploration well drilled in Donglihu,Tianjin.The design depth of the well is 4000m and the completion depth is 4051.68m.In order to clean up the blockage of aquifer in the drilling process,sodium pyrophosphate,compressed-air and acidification were used to wash the well,and pumping tests were carried out twice.The pumping test shows that the multi-process combined well flushing is effective.This paper mainly describes the well purging and pumping test process of Well CGSD-01 so as to provide useful reference for similar research in the future.

关 键 词：地热井 联合洗井 抽水试验 焦磷酸钠洗井 压缩空气洗井 酸化洗井 

分 类 号：P634[天文地球—地质矿产勘探]