WR450SE

💧 WR450SE 450 m Cost-Effective Crawler Water Well Drilling Rig

The WR450SE is a cost-effective crawler drilling rig designed for 450 m class medium-to-deep water well construction. It combines the S series 6 m drill pipe capability with the E series lower equipment investment positioning, balancing drilling depth, hole diameter, lifting capacity, and construction efficiency. It is suitable for farmland irrigation, rural water supply, livestock farming, groundwater development, and general engineering water well projects.

🎯 450 m Class Positioning Suitable for Deeper Conventional Projects Than 400 m Models

Maximum drilling depth 450 m, drilling diameter 105–400 mm. For areas with deeper groundwater levels, unstable aquifer distribution, or projects that wish to reserve greater drilling depth margin, the WR450SE provides a larger construction range than conventional 300 m, 350 m, and 400 m class models, while not directly entering the cost and transportation level of heavier 500 m+ equipment.

🔩 6 m Drill Pipe Reduces Rod Connection Frequency in Medium-to-Deep Hole Construction

The WR450SE supports 6 m drill pipes, with recommended drill pipe diameters of 89 / 102 mm. As hole depth increases, the number of rod connections and disconnections significantly affects effective construction time. Longer drill pipes can reduce connection frequency, making them especially suitable for continuous drilling and multi-hole medium-to-deep well projects, helping to reduce manual handling frequency and auxiliary operation time.

💰 E Series Positioning Places More Emphasis on Equipment Return on Investment

Cost-effectiveness does not mean reducing core construction capabilities, but rather concentrating the budget on commonly used drilling, lifting, rotation, and travel systems. The WR450SE retains 450 m drilling depth, 20 T lifting force, dual-mode rotation system, and 92 kW power, making it more suitable for construction teams concerned with procurement cost, daily project coverage, and equipment payback period.

🌾 Farmland Irrigation and Large Agricultural Projects

For farmland, orchards, greenhouses, and large-scale planting areas with deeper groundwater levels, 450 m class equipment can provide greater water-finding depth margin. 6 m drill pipes can reduce rod connection frequency, which is especially valuable for continuous construction of multiple irrigation wells. Actual well depth and hole diameter should be designed according to the aquifer, expected water yield, and pump type.

🏠 Rural Water Supply and Small Community Groundwater Development

The WR450SE can be used for domestic water wells, village-level water supply wells, small communities, and remote residential groundwater development. The 105–400 mm hole diameter range can accommodate different well casings and submersible pump configurations. Before formal construction, the main aquifer should be determined based on local hydrogeological data, avoiding blindly pursuing maximum drilling depth without basis.

🐄 Livestock Farm and Pastoral Area Water Supply

Livestock projects have high requirements for water source stability, especially remote pastures and large farms. The WR450SE can be used for livestock drinking water, cleaning, and production auxiliary water wells. The crawler chassis facilitates movement on agricultural roads and general unpaved sites, making it more suitable for continuous construction of multiple hole positions.

🧭 Groundwater Survey and Medium-to-Deep Hydrogeological Drilling

In addition to direct well completion, this model can also be used for general groundwater surveys and hydrogeological drilling, determining aquifer conditions through formation changes, return water, water inflow, and hole depth records. If the project requires complete core samples, a dedicated core drilling rig should be used instead of substituting a water well drilling rig.

🔄 9000 / 4500 N·m Dual-Mode Torque Suitable for Different Hole Diameters and Formations

Maximum rotation torque 9000 / 4500 N·m, corresponding to maximum rotation speed 90 / 180 r/min. The lower speed, high torque state is more suitable for large hole diameters, hard rock, or hole sections with greater resistance; the higher speed state is suitable for drilling stages with relatively lower resistance. Adjustments should be made according to drilling tools and formation changes during actual use.

💪 20 T Lifting Force Improves Medium-to-Deep Hole Drilling Tool Handling Margin

20 T lifting force can meet the requirements for running and pulling conventional drill pipes in 450 m class, DTH hammer recovery, and some casing operations. As hole depth increases, drill pipe self-weight and hole wall friction both rise. Therefore, when encountering abnormal pulling resistance, the hole wall, cuttings removal, and drilling tool status should be assessed first, then measures such as hole cleaning, slow lifting, or casing should be taken.

🚀 Fast Lifting and Advancing Reduce Non-Drilling Time

Fast lifting speed 30 m/min, fast advancing speed 55 m/min, mainly used for power head return, drill pipe handling, and other auxiliary actions. They can reduce non-drilling time but cannot directly represent actual rock penetration rate. The reference drilling efficiency given in the data is 10–35 m/h; on-site results are affected by formation, drilling tools, air compressor, and operation.

💨 1.2–3.5 MPa Air Pressure Suitable for Medium-to-High Pressure DTH Hammers

Recommended working air pressure for pneumatic DTH drilling is 1.2–3.5 MPa, air consumption 16–55 m³/min, compatible with medium and high pressure DTH hammers. When hole diameter increases, rock becomes harder, or altitude rises, the air compressor displacement requirement is higher, so both pressure and flow should be considered when selecting an air compressor.

💎 Weathered Rock and Intact Hard Rock Can Use DTH Drilling

After entering limestone, sandstone, granite, and other relatively intact rock formations, DTH hammers and bits can be configured according to rock hardness and hole diameter. Hard rock drilling should ensure DTH hammer lubrication, bit condition, and smooth cuttings removal at the hole bottom; when return cuttings decrease or air pressure is abnormal, timely hole cleaning and air leakage inspection should be carried out.

🌧️ Soil, Clay, and Sand Layers Can Use Mud Rotary Drilling

For loose formations such as soil, clay, sand, and gravel layers, mud rotary drilling helps with wall protection and carrying drill cuttings. When the upper overburden is thick, priority should be given to establishing a stable hole wall before entering rock formations and switching to DTH hammer. The mud pump can be selected according to project formation and construction method.

🧱 Fracture Zones and Fractured Formations

Fracture zones may cause block falling, air leakage, and drill sticking. After entering such hole sections, excessive advancing should be reduced, hole cleaning strengthened, and foam or casing used according to hole wall and air leakage conditions. If drilling tool torque or pulling resistance changes suddenly, downhole abnormalities should be analyzed promptly.

💧 Aquifers and Strong Water Inflow Sections

After drilling into the main aquifer, groundwater will change DTH hammer cuttings removal and downhole working conditions. The depth of the main water-producing layer should be recorded, and air supply, hole cleaning, and casing methods adjusted according to water inflow. During well completion, filter pipes and sealing sections should be reasonably set according to aquifer position.

⚡ 92 kW Power Balances Medium-to-Deep Hole Construction and Cost Control

The WR450SE uses a 92 kW power system to provide power for rotation, feed, crawler travel, and auxiliary hydraulic functions. For 450 m class conventional medium-to-deep hole projects, this power configuration is more oriented toward practicality and cost balance. During continuous hard rock construction, engine cooling and air filter maintenance should be strengthened.

🚜 Crawler Chassis Suitable for Rural, Construction Site, and General Field Sites

Equipment travel speed approximately 2.5 km/h, maximum climbing angle reference 21°. The crawler structure is suitable for village roads, gravel ground, and general uneven ground. Since the overall weight is approximately 8.5 T, ground bearing capacity and slope conditions should be confirmed before relocation, and movement should be cautious in soft soil and wet slippery areas.

🦵 1.6 m Hydraulic Outriggers Improve Equipment Stability

Hydraulic outrigger stroke 1.6 m, helping the equipment level and stably support on slightly uneven sites. Medium-to-deep hole construction cycles are long, and long-term equipment stability is very important for hole deviation and tower stress. On soft ground, pads should be used to prevent outrigger settlement.

🧵 1.1 T Auxiliary Winch, 2.5 T Optional

Standard auxiliary winch lifting force 1.1 T, with 2.5 T configuration also available. Conventional drilling tool handling can use the standard winch; if DTH hammers, casings, or other accessories are heavier in the project, the auxiliary winch can be upgraded according to site requirements to reduce manual handling intensity.

📦 8.5 T Overall Weight Suitable for Medium-Scale Construction Teams for Cross-Project Transportation

Overall weight approximately 8.5 T, dimensions approximately 5.85 × 1.8 × 2.4 m. Compared with larger 500 m+ equipment, transportation and loading/unloading are easier to organize, while still having 450 m class drilling depth capability, suitable for frequent relocation between different townships, farms, and engineering projects.

🧰 Mud Pump, Centrifugal Pump, Generator, and Foam Pump Can Be Selected According to Formation

Projects with more loose layers need mud pumps more, hard rock projects rely more on air compressors and DTH hammers, foam assistance can be considered for severely leaking hole sections, and generators may be needed for sites lacking stable power. Accessories should be combined according to main working conditions to avoid unnecessary costs from excessive configuration.

⚠️ Construction and Maintenance Precautions

Before daily construction, check the engine, hydraulic system, rotary head, crawler, outriggers, drill pipes, and high-pressure air pipes; during DTH drilling, check DTH hammer lubrication and air compressor status; during mud drilling, pay attention to whether circulation is smooth; after construction, promptly clean mud, dust, and rock powder, and inspect drill pipe threads, hydraulic joints, and wear parts.

Due to differences in actual geological conditions, downhole tools, drilling angle, and operation methods, the final drilling efficiency, drilling depth, and well completion effect should be based on on-site working conditions.

📊 Main Technical Parameters