The gravel or sand pack around the screen has stabilized.
In industry terms, a "wet hole" is simply a borehole that has successfully tapped into an aquifer. However, it isn't considered until it has undergone a rigorous development process. A mature well is one where: wet hole mature
All the drilling mud and fine particulates have been flushed out. The gravel or sand pack around the screen has stabilized
The excitement begins when the bit hits the water-bearing strata. But this raw "wet hole" is often filled with murky water and debris. At this stage, the well is still "infant" and prone to clogging. 2. Well Development (The "Aging" Process) wet hole mature