Field applications of such 99 reamers in Well CCSD-1 show that such tool can last long, meet demands for whole well coring operations, and thus is a good accessory of cor...

• 科钻一井99只扩孔器的现场应用证明,该扩孔器使用寿命较长,满足了全井取心钻进的需要,是一种较好的取心钻具配件,也有助于提高和完善我国硬岩深井大直径取心钻进技术。