What are the drilling construction steps Due to different factors such as drilling depth, soft and hard geology, pressure, well length and so on, the construction period varies from more than ten days to more than one year. The drilling process is also quite complex, and Portable Water Well Drilling Rigs Manufacturer will discuss only the more important ones. 1. Lower the pipe sleeve Casing design is an important part of drilling. Any well will often encounter several different geological, depth or emergency conditions, production and development needs in the process of drilling, so it needs several layers of casing to protect the hole, in order to successfully drilling the target drilling. A perforating well is one that is drilled to a certain depth or stratum and then drilled with a smaller bit. In the case of well 141, the first stage was drilled with 171/2" bit to 1,500 meters, and then with 133/8" surface casing, only 121/4" bit was used... And so on. 2...
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