There are different methods of drilling but the two most commonly are cable tool rigs and rotary drill rigs. A cable tool rig raises a large drill tool weighing approximately 1,500 pounds and drops it continually on the same spot, pulverizing whatever is in its path. After a few feet the tool is hoisted out of the way and a bailer is dropped down the hole to remove the debris. A rotary drill uses high pressure and continually drills without having to bail the hole. The debris is washed out while drilling.
For you, which technique do you choose? we have both kinds of water well drilling rig for you.please contact us and visit our website for more details. we are sure that your demand would be fulfilled.