The difference between pneumatic water well drilling rig equipment and water drilling rig？

 Pneumatic water well drilling rigs (hereinafter referred to as gas drills) are also called down-the-hole hammer water well drilling rigs. It uses compressed air as a well-washing medium and as energy for breaking rocks. It is also a percussive rotary drilling method, and its characteristics are similar to the hydraulic percussion drilling technology. The main advantage is that it can effectively improve the drilling efficiency of pebble layers and hard rocks, the life of the drill bit is long, and the hole inclination can be reduced; its drilling procedures are characterized by low weight on bit, low torque, low rotation speed, and large flushing medium flow. Contact us to get water well drilling rigs price right now.

The so-called pneumatic water well drilling rig is a technological method in which a rock-breaking drill bit and a pneumatic device that can produce an impact are submerged into the bottom of the well for drilling. This pneumatic device is a down-the-hole hammer, a pneumatic tool powered by compressed air. The impact energy generated by it can be directly transmitted to the drill bit, and at the same time, the drill rod is driven to rotate by the drill rig to form the ability to crush the rock. The compressed air discharged by the impactor is used to cool the bit and discharge powder, thus realizing the impact rotary drill The purpose of advancement. Therefore, pneumatic down-the-hole hammer drilling has some characteristics of air-washing wells, which is of special significance for drilling in dry and early water-deficient areas and serious leakage formations. Send your requirement to us if you need to buy water well drilling equipment for sale.

The difference between air drill and rhinestone

1. The single impact energy of pneumatic water well drilling equipment is large, generally up to tens of kilograms or more than 100 kilograms, which is more than ten to several times that of the current hydraulic impactor. Therefore, from the perspective of rock crushing, the pneumatic water well drilling rig equipment is mainly based on impact crushing rock, and the rotation only changes the location of impact crushed rock, and at the same time plays the role of auxiliary rock crushing. Therefore, the drilling efficiency depends to a large extent on the performance and quality of the DTH hammer.

2. Due to the low air density when the pneumatic water well drilling rig is drilling, the pressure of the gas column in the full-hole section is much smaller than the pressure of the liquid column, thereby improving the multi-directional pressure state of the rock at the bottom of the hole, which is conducive to breaking the rock and improving the drilling efficiency; But on the other hand, it requires a high flow rate to purge the bottom of the hole. Generally, it is required that the speed of the upward return air in the outer annular gap of the drill pipe must be 10-15m/s, and the hydraulic impactor of the water drill has a liquid flow when drilling. The up-return speed is only 0.8-1.2m/s, and the annulus flow velocity during small-diameter diamond rotary drilling is mostly 1m/s. Therefore, when drilling with a pneumatic DTH water well drilling rig, there is less rock powder at the bottom of the hole, which reduces the repeated fragmentation of rock powder, and its drilling efficiency can be doubled.

3. The down-the-hole hammer of the pneumatic water-well drilling rig equipment uses compressed air as the motive medium when drilling. After the high-pressure air passes through the impactor, the pressure around the bit is suddenly reduced and heat is absorbed, which is very beneficial to increase the life of the bit. Click here you can check our portable water well drilling rigs for sale.