汶川地震断裂带科学钻探项目WFSD-4S孔冲洗液技术  

Research on Drilling Fluids Technology for WFSD-4S Hole of Wenchuan Earthquake Fault Scientific Drilling Project

作　　者：王鲁朝 李晓东 翟育峰 

机构地区：[1]山东省第三地质矿产勘查院,山东烟台264004 [2]北京探矿工程研究所,北京100083

出　　处：《探矿工程（岩土钻掘工程）》2017年第2期27-31,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查项目"重点成矿带钻探冲洗液关键技术研究与示范"(编号:12120113097400)

摘　　要：针对汶川地震断裂带科学钻探项目四号孔浅孔(WFSD-4S)地质条件复杂,孔壁稳定性差,坍塌、掉块严重等问题,采用了双聚防塌冲洗液体系。该体系具有良好的稳定性和流变性,携屑能力强,防塌效果好,在WFSD-4S孔钻进施工中取得了良好的应用效果。通过对冲洗液配方的优化和性能参数的合理调整与维护,较好地解决了WFSD-4S孔的钻进技术难题,为顺利完成钻孔施工奠定了坚实的基础。The geological conditions were extremely complicated with poor wall stability and severe sloughing problems in WFSD-4S hole of Wenehuan earthquake fault scientific drilling project. To solve the above problems, the drilling fluid system of bi-polymer anti-sloughing system was adopted in the drilling construction, which had excellent properties of stabil- ity, rheology, cuttings carrying and anti-sloughing, and presented effective application result in WFSD -4S hole drilling construction. Through optimizing the formula of drilling fluid and rationally adjusting and maintaining the performance parameters, the technical difficulties in WFSD -4S hole drilling were successfully solved, which laid a solid foundation for smooth completion of drilling construction.

关 键 词：汶川地震断裂带 科学钻探 破碎地层 双聚防塌冲洗液 WFSD-4S孔 

分 类 号：P634.6[天文地球—地质矿产勘探]