汶川地震断裂带科学钻探取心钻进岩心堵塞机理分析

Analysis oo Core Blockage Mechanism in the Core Drilling Operation of Wenchuan Earthquake Fault Scientific Drilling Project

摘要:

对汶川地震断裂带科学钻探4号孔（WFSD-4）钻探现场半合管取心钻进岩心堵塞的机理进行了分析，总结出了4类岩心堵塞的形式，对每一类岩心堵塞形式给出了减轻岩心堵塞的技术措施建议。

Abstract:

By the analysis on core blockage mechanism with split core barrel for the coring operation of the borehole No.4 of Wenchuan Earthquake Fault Scientific Drilling Project, the paper summarized 4 core blockage forms. Some technical measures to reduce core blockage are suggested for each type of the core blockage form.