Introduction to the Main Working Principle of Water Well Drilling Machines

In water well construction, water well drilling machines are one of the most crucial equipment. Depending on the drilling method, common water well drilling machines are mainly divided into impact type, rotary type, and impact-rotary type, each suitable for different construction environments.

Impact Drilling

The impact drilling machine uses the up-and-down movement of the drill bit to repeatedly strike the ground layer, thereby achieving the purpose of breaking and forming a hole. This type of drilling equipment has a relatively simple structure, mainly consisting of a mast, steel wire rope, lifting system, and impact drill bit. However, since drilling and debris removal cannot be carried out simultaneously, the construction efficiency is relatively low and is typically used for loose soil layers or shallow water well projects.

Rotary Drilling

The rotary drilling machine relies on the continuous rotation of the drill bit under pressure to cut and break the ground layer. During the construction process, the mud system will carry away the rock debris out of the hole to ensure continuous drilling. This type of well drilling machine has strong adaptability and high hole-forming efficiency, and is widely used in various geological conditions, especially suitable for medium and deep well and complex stratum water well construction.

Impact-Rotary Drilling

The impact-rotary drilling machine combines the two working methods of impact and rotation. While the impactor forcefully breaks the rock, the rotary system drives the drill bit to rotate, enhancing the drilling capacity. This method not only ensures the breaking efficiency but also meets the requirements of deeper well construction, and is often used in geological conditions with complex conditions and water well depths with high requirements.

With the continuous improvement of water well construction needs, the rational selection of different drilling methods has become an important factor for improving construction efficiency and reducing costs.

FAQ

1.What are the common drilling methods for water well rigs?

Common drilling methods include percussion, rotary, and rotary-percussion, which are respectively suitable for shallow wells, complex formations, and deep well construction.

2. How should drilling methods be selected for different strata?

For loose soil layers and shallow wells, the impact type is an option; for various strata and medium-to-deep wells, the rotary type is suitable; and for hard rock or deep well construction, the impact-rotary type is more suitable.

3. What are the benefits of reasonable selection?

Scientific selection can improve construction efficiency, shorten the construction period, reduce costs, and ensure well completion quality and construction safety.