摘要
护壁技术是解决复杂地层钻探难题的关键技术之一。介绍了一些特殊的套管护壁技术在WFSD-4号孔钻探中的应用情况,包括在小间隙条件下下大直径套管技术、复杂钻孔活动套管护壁取心技术和用于强缩径地层的两阶段下套管固井技术等。
Borehole wall protection is one of the key technologies for resolving drilling problems in Complex Strata. This paper introduces some special casing adopted in the drilling operation of the borehole WFSD-4,including large diameter casing technology in small clearance condition,retrievable casing technology for small diameter core drilling in existing large borehole and two phase casing and cementing technology used in strong borehole shrinkage section.
出处
《探矿工程（岩土钻掘工程）》
2014年第9期109-113,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
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
中国地质调查局地调项目"定向钻进技术在西部地区大直径深孔钻探中的应用"(12120113097600)
"地震断裂带复杂地层钻探施工技术应用示范"(12120114075701)
关键词
科学钻探
汶川地震断裂带
套管
护壁技术
Scientific drilling
Wenchuan earthquake fault
casing
borehole
