钻井,就是人们从地表向下挖掘一个筒形的通道,最初的目的是为了汲取地下水。在人类历史发展的长河中,钻井技术大体经过了挖掘井技术、顿钻井技术和旋转钻井技术三个发展阶段。在前两个阶段,中华民族的技术水平都是世界最前列。公元前1500年前后,我国出土的甲骨文中就已经有了“井”字,春秋战国时期的井深已达50余米,到唐朝时已超过140米。这个时期属于人工挖掘井阶段,井的直径大约为1.5米,人可以从井筒下到井底。 Drilling, that is, people from the surface down a cylindrical channel, the initial purpose is to draw groundwater. In the long history of human development, drilling technology has basically gone through three stages of excavation technology, Dayton drilling technology and rotary drilling technology. In the first two stages, the technical level of the Chinese nation is the highest in the world. Before and after 1500 BC, the unearthed Oracle in our country already had the word “well”, and the well depth of the Spring and Autumn Period and the Warring States period reached more than 50 meters. By the time of the Tang Dynasty, it exceeded 140 meters. This period belongs to the artificial digging well stage, the diameter of the well is about 1.5 meters, and people can go downhole to the bottom of the well.