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木里是在拔海4000公尺以上的高原地区。气候严寒，积雪不化；给钻探工作造成不少的困难。尤其地质情况亦为特殊，复盖层厚达20公尺之多，均处于永久冻结状态；据地质生成原因：该永冻层可能为冰川侵袭之残余物。故其中卵石甚多，形成厚达15公尺以上的冻结卵石层。卵石直径为50—200公厘，个别的尚有大至300—500公厘以上者。这是钻进工作的新难题。卵石坍塌，钻进困难，长时不能克服。但在“向自然作斗争”的口号及职工的努力钻研情况下，终于找出了克服新难题的方法。很快的穿过该层，到达基岩，而顺利钻进了。
Muli is in the plateau 4000 meters above the plateau area. The climate is cold and the snow is not stable; it has caused a lot of difficulties in drilling. In particular, the geological conditions are also special. The cover is up to 20 meters in thickness and is permanently frozen. According to the geological formation, the permafrost may be the residue of glacier invasion. Therefore, many pebbles, forming a frozen pebble layer up to 15 meters thick. Pebble diameter of 50-200 mm, individual there are as large as 300-500 mm above. This is a new challenge for drilling. Pebble collapsed, drilling difficult, long time can not be overcome. However, under the slogan of “fighting against nature” and the hard work of staff and workers, we finally found out ways to overcome the new challenges. Quickly through the layer, reaching bedrock, and successfully drilling.