Application Characteristics of Impact Water Well Drilling Rigs in Loess Layers

Berita 73 Dilihat
Impact water well drilling rig show unique application characteristics in loess layers.

 

  1. These drills rely on the vertical reciprocating motion of drilling tools to make the bit impact the well bottom and break rock layers.
    With a relatively simple structure, they have certain advantages in areas where loess layer conditions are simple and the requirement for wellbore integrity is not particularly high. Misalnya, the grab bucket uses its own weight to impact the formation: the grab petals open to cut into the rock layer and close to grab rock cuttings. It is easy to operate and has low equipment costs, enabling quick completion of small water well drilling projects, especially in shallow loess areas.
  2. In loess layers, the impact force of impact drills can effectively break hard loess blocks or small gravels.
    Compared with rotary drills that may suffer from insufficient torque in hard soil layers, impact drills can adjust the impact frequency and stroke size to adapt to formations of different hardnesses. When encountering hard loess interlayers, increasing the stroke enhances the bit’s impact force for efficient drilling.
  3. However, impact drills also have limitations.water well drilling rig
    They lack a circulating well-washing system, so rock cuttings cannot be removed simultaneously with drilling, resulting in relatively low efficiency. In loess layers, if cuttings are not cleared in time, subsequent drilling will be affected. Moreover, they cause greater disturbance to the wellbore, increasing the risk of wellbore collapse in less stable loess layers. Overall, impact water well drills can still play their unique role under specific loess layer conditions.