A water well is a miniature of an oil and gas well. The concept is almost the same and everything is at a much smaller scale.

The mini drilling rig is installed on a 4 wheels trailer and it weighs 1.4 tons.

The hydraulic motor rotates the drill pipes and the swivel allows the drilling fluid to be pumped along the drill string.

The drilling pipes are 2 m long and weigh 12 kg each to be easily handled manually.

The threaded connections are conical, the same way as the bigger sister connections at the oil and gas rigs.

Before casing, a wireline geophysical investigation was performed in order to find exactly where the water producing formation was located.

The casing is made of special plastic used in food industries.

The lightweight of the casing pipes and the buoyancy make the casing possible to be performed easily.

After the casing job, the space in between the plastic casing pipe and the drilled hole is filled up with gravel that settles by gravity.

Various grades of gravel are used depending on the kind of water holding formation.

The final product is a 60m long blue plastic pipe inside the ground.

The drilling mud is eliminated from the well using the air-lift pumping system.

Before installing the water-producing pump, the air is pumped inside a 1/2 inch pipe and the difference of specific gravity pushes out the drilling mud based on the "U" tube principle.

See also below a short movie prepared by ConstantinConsulting.com showing this water well drilling volunteering experience.