汶川地震断裂带科学钻探项目WFSD-4孔强缩径地层钻进工艺研究

The Research on Drilling Technology Used for Strong Hole Shrinkage Borehole Condition in 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WFSD-4孔强缩径地层钻进的技术问题。在分析地层缩径机理和影响因素的基础上，提出了强缩径地层的钻进工艺措施。措施在WFSD-4孔中实施取得了显著的效果。

Abstract:

This article introduced technical problems encountered in drilling operation in strong hole shrinkage formation of WFSD-4 of Wenchuan earthquake fault scientific drilling project. On the basis of analyzing mechanisms of hole shrinkage and influence factors, drilling technical measures for resolving problems of strong hole shrinkage formation drilling were put forward. Good results were achieved in application of drilling technical measures for strong hole shrinkage formation in WFSD-4.