A water well drilling rig is a very modern and common drilling equipment in the market, it is the most advanced drilling technology at present, there are many types of water well drilling rigs that are being manufactured in the factory, right now hydraulic water well drilling rig and crawler water well drilling rig are the most welcomed water well drilling rig machine.
How long does it take to drill a water well borehole? The answers to this question are affected by the following factors.
It depends on what kind of water well drilling rig you choose. The impact water well drilling rig drills slowly since it uses a big drilling bit to hit the earth. The big drill bit is pulled up the drilling rig machine, then loose, and the drill bit hits the earth hard. From time to time a water well borehole is shaped. This is an ancient way to drill a water well and takes a long time. This type of water well drilling rig is no long being manufactured in the factory. Another type of water well drilling rig is the hydraulic water well drilling rig, which is an advanced technology integrated water well drilling rig, it drills fast than the other types of water well drilling, the hydraulic system will push the drilling rod into earth while drillings.
The other reason is that what kind of drilling methods chosen to drill the water well borehole, there are screw air compressor drilling methods and mud pump drilling methods. The screw air compressor drilling method drills fast and it can drill through rocks with ease, the compressed air is a source of power that powers up the pneumatic drill bit to cut the rocks into small pieces and blow the cuts out the water well borehole. The mud pump drilling method needs water as its medium to drill, it can not drill rocks as efficiently as the screw air compressor drilling method does, and it drills a little bit slower.
The geological condition is very important too. If the earth is soft and there are not too many rocks beneath the soil, the mud pump drilling method is needed, it is because the water well borehole wall will be nicely protected. If there are hard layers of big stone lying beneath the soil, the screw air compressor drilling method is the best choice, since it can drill through the rocks more effectively.
How long it takes to drill a water well borehole depends on the water well drilling rig, the drilling method, and the geological conditions. Here is a rough estimation, a 160m depth water well borehole will take 2-3 days by mud pump drilling method, and will take 1-2 days for a screw air compressor drilling rig machine to drill.