Why is mesh size important for a well screen?

The importance of mesh size for a well screen primarily lies in its capacity to reduce the amount of sand that can be pumped alongside water. A well screen serves as a barrier to prevent sediment and larger particles from entering the pump system while allowing clean water to flow through.

When the mesh size is properly selected, it can effectively filter out finer sand and gravel from the water being drawn into the well. This is crucial for protecting the pump and ensuring the longevity and efficiency of the well system. If the mesh is too large, it may allow excessive amounts of sand to pass through, which can lead to sediment buildup and damage to equipment over time. Therefore, ensuring the right mesh size is essential in maintaining the quality of water extracted and the operational stability of the well.

Other choices do not address the core function of the well screen related to mesh size as directly as reducing the amount of sand pumped does. For example, while gravel packing can benefit filter efficiency, the mesh size itself will not eliminate the need for it altogether. Over pumping affects water levels and is more related to well capacity and management rather than the size of the mesh. Increasing water velocity through the screen could lead to increased wear on the screen and potentially higher levels of sand intake, which is counter