摘要
在厚第四纪地层中进行勘探施工,最常见且最难以处理的孔内事故钻具下钻受阻,导致经常出现岔孔等孔内事故,对钻探施工影响很大。本文运用现代钻探理论,结合现场事故处理经验等资料,分析论证了在钻进和停钻时地层、泥浆和钻具等因素对钻孔孔径的影响,并对此问题的处理了探讨。
For exploration construction in thick quaternary stratum, the most common and most difficult thing is to cope with a drilling rig that is stuck in the borehole, which often leads to a fork-hole accident. This paper applied up-to-date drilling theory combined with site accident treatment experience data to analysis of the effect of stratum, slurry and drilling rig on the borehole size in the process of drilling and stoppage, then discussed the treatment measures
出处
《安徽地质》
2015年第2期129-131,共3页
Geology of Anhui
关键词
钻具受阻
钻孔缩径
泥皮增厚
岩层膨胀
可控絮凝低固相泥浆
drilling rig being stuck
borehole shrinkage
sludge thickening
rock layer expansion
controllableflocculated low-solid slurry
