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复杂地层钻进问题如果不加以解决，台月进尺难于提高，先进的小口径金刚石钻进方法，也无法全面推广。本文针对如何研究解决复杂地层钻进方面的问题，提供一些参考意见。一、如何研究孔内复杂问题1．复杂地层的概念是相对的地层问题是研究孔内复杂现象时，必须首先抓住的问题。在我国地质钻探部门，习惯上把地层分为复杂和非复杂（简单）两大类。在复杂地层中钻进，极易发生坍塌、掉块、剥落、探头石、溶解、水化分散、溶胀缩径、漏水、涌水等一系列复杂现象。然而，复杂地层与复杂现象并无必然的联系，这要看该地层在什么样的条件下被钻穿。
Complicated formation drilling problems if not resolved, Taiwan is difficult to improve the footage, advanced small-diameter diamond drilling method, can not be fully promoted. This article provides some suggestions on how to solve the problem of complex formation drilling. First, how to study complex problems in the hole The concept of complex strata is a relative stratigraphic problem that must be first grasped when studying complex phenomena in a well. Geological drilling in our country, the habit of the formation is divided into complex and non-complex (simple) two categories. In complex formations drilling, prone to collapse, falling, peeling, the probe stone, dissolved, hydration dispersion, swelling diameter, leakage, water and a series of complex phenomena. However, complicated formations are not necessarily related to complicated phenomena, depending on the conditions under which the formation is drilled.