大荔地区粉细砂地层成井措施的探讨  

Discussion on Well Forming Measures of Silt Fine Sand Formationin Dali Area

作　　者：王亚辉 李青青 WANG Yahui;LI Qingqing(Shanxi Tiandi Geology Co.,Ltd.,Xi’an 710054,China;Baoji Surveying and Mapping Institute,Baoji 721001,China)

机构地区：[1]陕西天地地质有限责任公司,陕西西安710054 [2]宝鸡市测绘院,陕西宝鸡721001

出　　处：《城市勘测》2023年第1期205-208,共4页Urban Geotechnical Investigation & Surveying

摘　　要：针对陕西省渭南市大荔地区粉细砂地层成井难的问题,本文对影响粉细砂地层成井质量的因素进行了讨论,在分析粉细砂地层成井产生涌砂及出水量小问题成因的基础上总结了以往解决粉细砂地层成井的方法。根据工程实践经验提出了取芯钻机及水文钻机相结合的方式成井、采用无缝钢管及双层缠丝过滤器成井、抽水填砾等新的举措,对该地区粉细砂地层成井具有工程借鉴意义。In view of the difficulty of well completion in fine sand formation in Dali area, the factors affecting well completion quality of fine sand formation are discussed in this paper. On this basis, the causes of sand surge and small water yield in fine sand formation are analyzed, and the previous methods to solve well completion in fine sand formation are summarized. According to the practical engineering experience, some new measures are put forward, such as the combination of core-drilling rig and hydrologic drilling rig, the use of seamless steel pipe and double-layer filamentous filter, pumping gravel filling, etc.,which have very important reference significance for the well completion of fine sand formation in this area.

关 键 词：粉细砂成井措施 涌砂 出水量小 双层缠丝过滤器 抽水填砾 

分 类 号：P641.72[天文地球—地质矿产勘探]