Views: 4 Author: pqwt Publish Time: 2022-10-25 Origin: PQWT
Adopting scientific well drilling process: To make a well with high water output, low depth of drop, good water quality and long service life under the same geological conditions, it is crucial that the well formation process is scientific and reasonable. Here's how to drill a well scientifically to find water with the pqwt institute
1. The filter pipe should be right on the aquifer
Once the two are misaligned, the resistance to incoming water will be much greater, thus increasing the depth of descent. For this reason, we should physically probe the well before placing the pipe to accurately determine the aquifer location.
2、The porosity of the filtering water pipe should be sufficient
No matter what pipe opening porosity should not be less than 10%. Most of the cement pipes produced by domestic methods are only 1-2%, and the water inlet resistance is very high, which is not allowed.
3, the filter water pipe and the filter network should be added between the pad tendons
If there is no pad tendon, the strainer will stick to the well pipe, and only the strainer facing the inlet hole can be fed, which will easily cause blockage and seriously affect the water output and service life of the well.
4. The mesh of the screen and the size of the filled gravel should be adapted to the aquifer
Otherwise, either blockage, or muddy water caused by well water.
5, mud drilling, break the wall for slurry before releasing the pipe.
When drilling with mud, use the wall-breaking pipe to take the mud first.
At present, there are serious problems such as random configuration of filter water pipe, low opening rate of filter water pipe, no reinforcement, unqualified filter mesh and gravel filling, incomplete wall slurry replacement, etc., which need to be improved. Most of the recharge wells of ground source heat pump are not well recharged, which is an important reason.
Conduct pumping test, reasonable pump selection
The pumping test can be combined with well washing. Before the end of well washing, measure the water output of the pump, static water level, dynamic water level, and calculate the unit water output of the well, the possible large water output, and the appropriate water volume for the pump. At present, the vast majority of wells do not have the above data, only know a few kilowatts of water pump is enough to pump water, can only blindly choose the pump, well drilling how deep to choose a high head of water pump, a serious waste of energy.
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