Water Well Drill Rig
FAQ for Water well Drilling rig
A water well drilling rig is engineering machinery dedicated to groundwater well drilling. Its core function is to drive drilling tools via power to break strata, create deep boreholes for groundwater extraction, and it is also suitable for hydrogeological surveys, shallow geothermal well drilling and other related tasks.
- Designed for water well drilling, it supports percussion, rotary & combined techniques, handling loose soil, sand and rock formations to ensure well completion success across regions.
- Available as truck/crawler/portable models: truck/crawler units enable rapid relocation for large-scale farmland/urban-rural projects; portable units suit narrow, remote areas like mountains and hills.
- Mechanized operation outperforms manual drilling in speed, with precise control of well depth/verticality; the mud circulation system removes cuttings, cools tools and reduces borehole collapse risks.
- Beyond water well drilling, it works for hydrogeological surveys, shallow geothermal drilling and monitoring hole construction, cutting costs via multi-purpose use.
- Modern models integrate positioning/well logging for real-time parameter monitoring; semi-automatic functions lower operator skill requirements and boost safety.
- For farmland irrigation wells: drill to 20–80m stable aquifers in arid areas or 10–40m in humid regions; deepen to confined aquifers for high water demand. Choose Φ300–500mm for small-scale irrigation, Φ500–800mm for large-scale projects.
- For domestic water wells: drill 30–60m for rural single households, 60–150m deep confined aquifers for urban centralized supply. Select Φ200–400mm for single households, Φ500–1000mm for multi-household needs.
- For shallow geothermal wells: use 80–200m depth (adjust per local geothermal gradient); choose Φ150–300mm (up to Φ300–500mm for large commercial systems). Conduct hydrogeological surveys first and match rig capacity to avoid rework.
- Mountainous/hilly areas: Prioritize crawler-mounted rigs (low ground pressure, good climbing/leveling performance). Portable rigs supplement for narrow/remote sites.
- Plain farmland: Opt for truck-mounted rigs (fast relocation, integrated design, minimal farmland damage, ideal for multi-site continuous operation).
- Urban suburbs: Choose portable rigs for narrow spaces (low noise/dust, manually transportable); use truck-mounted rigs for open-area large-scale projects (balanced efficiency and mobility).
- Matching rig torque & lifting capacity requires tailoring to complex formations (cobble beds, weathered rock) as follows:
- Cobble beds: Use 50%–80% higher torque than soil to crush/compact cobbles; lifting capacity to exceed drill string weight + friction with 30% overload margin; opt for hydraulic rotation/lifting systems.
- Weathered rock: Moderate torque for highly weathered rock (avoid over-crushing/instability); lifting capacity to match drill string + cuttings weight. Set torque to 1.2–1.5x for weakly weathered rock; reserve extra lifting capacity for fracture-induced jamming.
- General rules: Conduct geological surveys first; select large crawler rigs; adopt percussive-rotary drilling; use mud wall protection to reduce downhole resistance.
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