双聚防塌冲洗液在覆盖层钻探中的应用  

The application of dual-polymer anti-sloughing flushing fluid for drilling in covering layers

作　　者：于富安 刘维平 孙健越 YU Fu’an;LIU Weiping;SUN Jianyue(Yantai Center of Coastal Zone Geological Survey,China Giological Survey,Yantai Shandong 264001,China;Technology Innovation Center of Marine Land Integrated Drilling Engineering,Yantai Shandong 264001,China)

机构地区：[1]中国地质调查局烟台海岸带地质调查中心,山东烟台264001 [2]海陆一体化钻探工程技术创新中心,山东烟台264001

出　　处：《钻探工程》2025年第2期59-64,共6页Drilling Engineering

基　　金：中国地质调查局地质调查项目“东部地区战略性矿产靶区查证技术支撑(烟台中心)”(编号:DD20242961)。

摘　　要：在河南驻马店地区覆盖层钻探过程中,钻遇第四系黏土层、砂质泥岩、松散砂砾岩和泥岩不等厚互层,钻孔护壁难度大,容易发生掉块卡钻、塌孔埋钻等事故,取心困难。根据地质情况及区内钻孔施工资料,采用双聚防塌冲洗液,通过现场试验应用,在长孔段裸眼提钻取心钻进过程中,孔壁稳定性较好,未发生掉块、坍塌等现象,岩心采取率满足地质设计要求,减少了套管下入深度,节约了施工成本。During the drilling process in the covering layer of Zhumadian area in Henan Province,the Quaternary clay layer,sandy mudstone,loose sandstone unevenly interbedded with mudstone were encountered,resluting in difficult wall protection,prone to accidents such as block jamming,hole collapse and burial,and difficult in taking cores.Based on the geological conditions and the drilling construction data within the area,the dual-polymer anti-sloughing flushing fluid was used.In the on-site application,the stability of the hole wall was good during the drilling process of the long open hole well section,without any incidents of falling or collapes.The core recovery rate can meet the geological design requirements,moreover,the casing depth and construction cost were reduced.

关 键 词：双聚防塌冲洗液 覆盖层 松散砂岩 孔壁稳定 

分 类 号：P634.6[天文地球—地质矿产勘探]