When you have to dig a new well but you live in very rocky country, you may have some unique challenges. One of the biggest challenges has to do with finding an aquifer that will deliver plenty of fresh water to the well. If you have located such an aquifer, but it is several feet below solid rock, there are ways to get to it.
Probably one of the best ways to get to the aquifer, especially if it is farther down than eight to twelve feet, is to hire an oil drilling company. These companies can drill through the rock, regardless of type and hardness, to get to the water below. Some of them have massive drill bits made from diamonds, which makes it really easy for them to get through any kind of rock at all. If you do not have an oil drilling company in your neck of the woods, you may have to hire a demolition contractor.
When you cannot find a drilling contractor to get through all that rock, try a demolition contractor or explosives expert. He/she can blast down through the rock using various types of explosives, dynamite, blasting caps. etc. While the blasting is a little messier, more dangerous and louder than the drilling alone, it may be just what you and your well contractor need to get to the aquifer.
A Combination of Drilling and Blasting
Sometimes a well contractor, such as 3 - Rivers, Inc., Drilling & Blasting, will play it safe by using both drilling and blasting. He/she may initially use a blasting cap to put a good hole in the rock's topmost surface, and then the drill will not slip as much when it starts. The drill will chip away what it can, and then more blasting caps. Usually this is done with the drills available to the well contractor so that no outside contractor (e.g., an oil well contractor) needs to be called in to handle the job. The contractor will continue with this back-and-forth trade-off between blasting and drilling until he/she gets all the way through the rock.
The alternative method is to find a spot underground where the rock is thinnest or perhaps not quite as hard as the rock above it. Then the contractor and his/her crew burrows down at an angle to get to this area of rock and then drills and/or blasts through that. This alternative method may be done either before attempting any of the above approaches, or after the above approaches have failed.