汶川地震断裂带科学钻探项目WFSD-4孔取心钻进技术

The Core Drilling Technology Used in the Borehole WFSD-4 of Wenchuan Earthquake Fault Scientific Drilling Project

摘要:

介绍了汶川地震断裂带科学钻探项目4号孔（WFSD-4）取心钻进施工情况，对破碎和缩径地层的取心钻进工艺和技术措施及其应用效果进行了分析和总结。

关键词:地震断裂带;科学钻探;复杂地层;取心钻进;强缩径

Abstract:

In this article the core drilling operation of the borehole WFSD-4 of Wenchuan earthquake fault scientific drilling project has been described，and the core drilling technology and technical measures to solve the problems encountered while drilling in broken rock formation and strong borehole shrinkage condition have been analyzed and summarized. The application results of the core drilling technology and technical measures have been introduced.

Key words:Wenchuan earthquake fault; scientific drilling; complex formation; core drilling; strong shrinkage formation