汶川地震断裂带科学钻探一号孔(WFSD-1)钻探施工概况
投稿时间:2009-11-23  修订日期:2009-11-23  点此下载全文
引用本文:樊腊生,贾军,吴金生,赵远刚,尤建武.汶川地震断裂带科学钻探一号孔(WFSD-1)钻探施工概况[J].探矿工程(岩土钻掘工程),2009,36(12):5-8.
FAN La-sheng,JIA Jun,WU Jin-sheng,ZHAO Yuan-gang,You Jian-wu. Overview on Drilling Operation of the WFSD-1 in Wenchuan Earthquake Fault Scientific Drilling Project[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2009,36(12):5-8.
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作者单位
樊腊生 中国地质科学院探矿工艺研究所 
贾军 北京探矿工程研究所 
吴金生 中国地质科学院探矿工艺研究所 
赵远刚 工艺所 
尤建武 四川省地质矿产勘查开发局四〇三地质队 
基金项目:科技部科技支撑计划专项“汶川地震断裂带科学钻探(WFSD)”项目之“科学钻探与科学测井”课题
中文摘要:介绍了汶川地震断裂带科学钻探一号孔(WFSD-1)的施工情况以及取得的经验和教训。在施工中,克服了钻孔涌水、垮塌和地层极为破碎等困难。采用低失水、高密度和具有良好润滑性能的泥浆体系,解决了由地应力导致断层泥膨胀和缩径的技术难题。采用半合管取心技术,在破碎地层中也能获取原状性好的岩心。
中文关键词:科学钻探  汶川地震断裂带  钻探施工
 
Overview on Drilling Operation of the WFSD-1 in Wenchuan Earthquake Fault Scientific Drilling Project
Abstract:This paper introduces the drilling operation of the WFSD-1 of the Wenchuan earthquake fault scientific drilling (WFSD) project as well as the experience gained and lessons learned during the hole drilling. Some extreme technical difficulties in the drilling operation, such as hole gushing water, broken formation, borehole collapse and tight hole, were overcome. A mud system with low water loss, high density and good lubrication properties was put to use to resolve mud expansion in fault gouge and diameter shrinkage resulted by geostatic stress. A two haves tube coring technique was used to remain core in undisturbed state even in broken formation.
keywords:scientific drilling  Wenchuan earthquake fault  drilling operation
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