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本文主要阐述了煤田钻进工程中冲孔的意义、冲洗液的种类,导致孔壁不稳定的原因、稳定孔壁的方法等技术问题。
This paper mainly expounds the significance of punching in the coalfield drilling engineering, the type of flushing fluid, the reasons leading to the unstable pore wall and the method of stabilizing the pore wall.