Types of Rotary Drilling Techniques for Water Wells

Well drillingWater is a scarce commodity worldwide, especially with the climate change and pollution. For residential and commercial applications, a substantial amount of water is essential – it is a basic human right, after all. Drilling for a water well is the only way to ensure that there is constant and bountiful water supply in one’s property.

There are various methods of well drilling, but rotary drilling remains to be the most popular option. This is because it can reach great depths. On top of that, it is also fast and offers a high level of automation, hence reducing your labour costs.

Here are the various techniques used in rotary drilling:

Down-Hole Hammer Method

This drilling technique uses a pneumatically-controlled drill bit. In creating a water well, the down-hole hammer technique combines the drill’s turning action and the percussion of cable tool drilling. This method is the fastest one for penetrating hard rock, and thus enables the drilling of wells in fractured hard rock aquifers. It is, however, not used in areas with unconsolidated loose materials.

Reverse Circulation Drilling

Meanwhile, through reverse circulation drilling, fluid is pumped into the space between a hole and walls with the use of a drill pipe. Fluid is then pumped out with the ground’s cuttings through an ejection pipe. A substantial light drilling fluid is used for wells with a large diameter to preserve an open hole. This technique is used in areas with soft ground and gravel.

Sonic Drilling

This is the latest rotary drilling technique. Sonic drilling uses high-frequency vibrations and rotation to drill wells. This drilling technique is continuous, and involves no use of contaminants and drilling fluids, unlike other options. Sonic drilling is best-suited for drilling areas with unconsolidated formations, though its depth is relatively limited.

The ideal technique for your well drilling primarily depends on your geological conditions. The drilling company will hence conduct geological studies on your property before starting their drilling. The results will form the basis of their decision on the ideal technique for drilling your well.

As water will always be an essential part of humankind’s existence. Well drilling can very well mean that you, as a property owner, are ensuring the continuity of life.