汶川地震断裂带科学钻探项目WFSD-4S孔冲洗液技术

Exploration Engineering(Rock & Soil Drilling and Tunneling)(2017)

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Abstract
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.
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