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The use of large hole drill pipe advantages
Release time:
2021-11-13
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The use of large hole drill pipe advantages
With the gradual depletion of surface and regular resources,large hole drill pipeThe drilling industry must turn to complex regions, oceans and deep areas for resources. As a result, the requirements for drilling are getting higher and higher. While drilling cable is widely used in geological and mining industries because it can reflect the direction and inclination of drilling in real time.
There are generally two driving methods for drill pipes, one is top drive, and the other is turntable rotation. Top drive: On the top of the crane, there is a movable pulley and a large hook. The big hook hangs on the top drive. There is an electric motor inside. Electric shock rotation to drive the square drill pipe and drill bit. This method still requires a rotary table, mainly to capture the drill pipe in the extension pipe. The other is that the square drill rod is inserted into the rotating table, and the rotating table drives the square drill rod and the drill bit to rotate.
large hole drill pipe benefits:
There is no loss of energy transfer. The impactor acts directly on the drill bit without the need to transmit impact energy from the drill pipe. The drilling speed is not affected by the depth of the hole.
2. The drill pipe is straight, has good rigidity, does not bear impact force, only transmits torque, and the axial pressure transmission is very small. During decompression drilling, there is no need to transmit axial pressure at all, so the drill pipe is not easy to bend and deform, and the borehole is straight and smooth, Especially in the case of drilling cracks, inclined bedding or rock hardness changes, it is better than other drilling methods.
3. Clean slag discharge. After the power medium is working, it can also clean the holes, which is cleaner than other drilling methods and avoids excessive drilling.
4. Low noise, because the impact is carried out at the bottom of the hole, which is less noisy than the anvil type.
Based on these advantages, large and large hole drill pipe is suitable for industrial and civil construction, highway, railway, bridge foundation, dam site, water conservancy, water well, exploration and other engineering geological exploration projects, shallow oil and gas exploitation, mine tunnel ventilation, drainage, large diameter pile hole construction, etc.
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