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“因岩施钻”,即按岩石性质和岩层的复杂程度选用钻头和钻进工艺、护孔工艺,以期取得最佳的经济效果——多快好省地达到目的。这是钻探工作者都能理解的道理。但在实际工作中,却不一定都能按这个道理办事。例如:根据岩石性质选用钻头,有的就选得不那么合适;钻进操作工艺,往往只凭经验办事;钻孔结构和护孔措施,有许多还不能按岩层条件
“Drilling due to rock” means that the drilling and drilling technology and the hole drilling technology are selected according to the rock properties and the complexity of rock formations in order to achieve the best economic results - achieving the goal more quickly and economically. This is what Drilling workers can understand. However, in actual work, they may not always be able to act according to this principle. For example, the selection of drill bits depends on the nature of the rock, and some are not suitable for the selection. Drilling operations often rely on experience alone. Many of the drilling structures and guarding measures can not be selected according to rock conditions