Patching is the fastest and most effective way to get a well back in service quickly. It brings a well back to its intended size and strength, without having to make any changes to pump size or setting. A well can be cleaned more efficiently because it does not have reductions or inner casing that needs to be clean through. Watertight seals are made by matching the exact outside circumference of the patch to a well’s casing inside diameter or by adding rubber or neoprene to the patch. A well patch reduces the well size by about ¼-inch depending on the thickness of the patch and how much pressure is applied during swaging. A hydraulic swage is best to use because it can build up to 10,000 PSI to forge out a tight-fitting patch to brace against static water pressure. The “rule of thumb for patch strength” is it takes the same amount of pressure to collapse a patch in as it does to push it out.