1. According to the dynamic situation. The local well pump supply chains vertical well tube, primary pump. Generally speaking, if the local power supply is guaranteed, the best selection of submersible pump, because of its light weight, simple to install and use, the verticality of the well pipe requirements is relatively low. Opposite, if the areas without electricity, or power supply to assurance, and verticality of well pipe and relatively good, select diesel engine driven deep well pump.
2. According to the well diameter preliminary determination of the model of the deep well pump. The minimum borehole diameter and the diameter of pump used must conform to, as well as 8 inches diameter, deep well pump should be less than 8JD. But in general, in order to ensure the installation is convenient, the well diameter shall be 2 inches larger than the minimum well diameter of the well pump.
3. According to the maximum water quantity of well selected pump type. The maximum water inflow well in general should be based on the well pumping test to determine. But because of equipment limitations and can not be pumping test, estimated on the basis of well washing water inflow and water level drawdown data.
