In loose gravel layers,
rigs easily shift during construction,
causing well positioning deviations that affect subsequent functions.water well drilling rig
To control positioning accuracy, level and compact the site before construction for a stable rig foundation. Use high-precision instruments like total stations and GPS for layout, setting multiple control points.

- Recheck rig position and verticality at certain depths during drilling, adjusting promptly if deviations occur.
- Install a spirit level on the rig base to monitor its horizontal status in real time.
- Use deviation correction devices (例えば。, eccentric bits, bent subs) to adjust the borehole for accurate well positioning.water well drilling rig