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水力噴射－EMAS方法

312 bytes added, 22:28, 5 September 2016
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[[Image:Icon_EMAS_drilling.png|right|80px]]
[[Image:Emas.jpg|thumb|right|200px|在哥倫比亞以EMAS方法鑽井。]]
[[Image:Emas1.png|thumb|right|200px|所有的工具可輕易裝進一台小型手推車內。]]
__NOTOC__ <small-title />
手工鑽井中的EMAS方法是融合了[[Jetting - general|水力噴射]]、[[Percussion - general|衝擊鑽法]]以及[[Sludging - Rota sludge|迴旋式]]之鑽井技術。此方法需使用手動泥泵，每個行程末端鑽桿皆轉90度；這可鑽鑿到各種鬆土、綜合材料及輕石。但鑽桿無法穿過硬原岩及卵礫石（如：地下的古老河床）。管井直徑一般為37毫米。
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