WR500SE

💧 WR500SE 500-Meter Cost-Effective Telescopic Mast Crawler Water Well Drilling Rig

The WR500SE is a cost-effective crawler drilling rig designed for 500-meter-class medium-to-deep water well construction. Its focus differs from the WR500S: the WR500S emphasizes 500-meter heavy-duty water well capability, while the WR500SE further highlights a 6.6 m long stroke, telescopic mast, and more flexible on-site auxiliary configuration on the basis of 500-meter drilling depth. It is suitable for water well drilling teams that need relatively high continuous construction efficiency while controlling equipment investment.

💰 E-Series Positioning: Controlling Overall Investment at 500-Meter-Class Capability

500-meter-class water well projects have high requirements for lifting force, torque, air compressor, and drill pipe system. Excessively adding unnecessary configurations will significantly increase equipment investment. The WR500SE retains 26 T lifting force, 7500–10000 N·m rotary torque, 118 kW Yuchai power, and multiple drill pipe specifications, while through its cost-effective series positioning, it allows the budget to be focused more on the core capabilities truly needed for deep-hole construction.

🪜 6.6 m Long Stroke Is an Important Efficiency Advantage of the WR500SE

The single-feed length is 6.6 m, which can be used directly with 6 m drill pipes. For 400–500-meter-class boreholes, the more times pipes are added, the more noticeable the accumulated auxiliary time becomes. The long-stroke structure can reduce repeated return of the power head and the frequency of drill pipe connections, offering more practical value in projects with continuous construction, fewer cooperating workers, or tight schedules.

🔩 102 / 108 / 114 mm Drill Pipe Configuration Is More Oriented Toward Medium-to-Deep Holes

The WR500SE supports 102 / 108 / 114 mm drill pipes, with optional lengths of 1.5 / 2 / 3 / 6 m. Larger-diameter drill pipes are more suitable for 500-meter-class deep holes and higher-torque working conditions, while different lengths can be flexibly combined according to site space, transportation conditions, and construction efficiency. 6 m drill pipes are suitable for continuous drilling, while shorter drill pipes are more suitable for space-restricted sites.

📏 500-Meter Drilling Depth Is Suitable for Deep Groundwater Development

The maximum drilling depth is 500 m, and the borehole diameter is 140–350 mm. It can be used for rural deep wells, farmland irrigation wells, industrial water wells, mining area water supply, and general medium-to-deep groundwater projects. In areas where shallow aquifers are unstable, groundwater depth is relatively large, or water demand is relatively high, 500-meter-class equipment provides greater construction margin.

🌾 Farmland Irrigation and Large-Scale Agricultural Projects

Large farmland, orchards, and greenhouse projects often require continuous construction of multiple water wells. The 6.6 m long stroke and 6 m drill pipes of the WR500SE can reduce the number of pipe connections and improve continuous construction efficiency for a single well. The actual well diameter and well depth should be designed according to expected water yield, irrigation area, well casing, and water pump specifications.

🏠 Rural Deep Water Wells and Small Community Water Supply

In areas with insufficient centralized water supply coverage or relatively deep groundwater levels, the WR500SE can be used for groundwater development for villages, schools, clinics, and small communities. A 500-meter-class drilling depth does not mean that every project needs to drill to the limit depth. The actual construction depth should be determined based on aquifer location and local hydrogeological data.

⛏️ Mining Area Water Supply and Dust Suppression Projects

Mining areas often require domestic water, equipment cleaning, dust suppression, and auxiliary production water sources. The crawler chassis of the WR500SE is suitable for gravel ground in mining areas and general field roads. Its 118 kW power and 26 T lifting force are also more suitable for water well construction in mining areas with a relatively high proportion of hard rock and relatively large hole depths. For dewatering wells, well locations and pump rates should be determined in combination with hydrogeological design.

🏭 Water Supply for Industrial Parks and Construction Camps

Industrial parks, factories, construction camps, and infrastructure projects may require independent water sources. The WR500SE can be used for auxiliary production water, equipment cleaning, and general construction water supply wells. The telescopic mast and crawler structure facilitate relocation between different sites and also make it easier to arrange equipment in areas with limited space.

💪 26 T Lifting Force Provides Support for Deep-Hole Drill Strings and Casing Handling

The 26 T lifting force can be used for tripping 500-meter-class drill pipes, recovering DTH hammers, and some casing operations. Once hole shrinkage, falling blocks, or sediment occur in deep holes, the resistance during pulling out will increase rapidly. Therefore, lifting capacity should be regarded as normal operating margin, not as the only means to handle all downhole incidents.

🔄 7500–10000 N·m Rotary Torque Adapts to Different Rock Formations

The rotary torque is 7500–10000 N·m, and the rotary speed is 45–130 r/min. Harder rock formations and large boreholes usually require higher torque and lower rotation speed, while hole sections with less resistance can use higher rotary speed. Actual parameters should be adjusted in real time according to the DTH hammer, drill bit, drill pipe, and cuttings return conditions.

💨 1.7–3.5 MPa Air Pressure and 17–42 m³/min Air Consumption

When using DTH drilling, the air compressor configuration directly affects impact and cuttings removal. The recommended working air pressure is 1.7–3.5 MPa, and the air consumption is 17–42 m³/min. When the borehole diameter increases, the rock formation becomes harder, the hole depth increases, or the altitude rises, more sufficient air flow is required, and rated pressure alone should not be the only consideration.

💎 Hard Rock Drilling Such as Granite, Basalt, and Limestone

When equipped with a suitable DTH hammer and air compressor, the WR500SE can be used in relatively intact rock formations such as granite, basalt, limestone, and sandstone. During hard rock construction, DTH hammer lubrication and stable cuttings removal should be maintained. If cuttings return decreases or torque suddenly increases, the hole should be cleaned in time and the drill bit and DTH hammer condition should be checked.

🌦️ Weathered Layers and Alternating Soft and Hard Formations

Weathered rock and alternating soft and hard formations are prone to hole wall falling blocks and hole shrinkage. During construction, parameters should be adjusted according to changes in rotary torque, feed resistance, and cuttings return. When necessary, casing should be used for the upper unstable hole section to reduce hole wall problems in the deep-hole stage.

🟤 Soil Layers, Sand Layers, and Loose Overburden

The upper soil layer, clay, sand layer, and gravel layer usually require more attention to hole stabilization. Depending on the project, casing, mud, or other wall protection methods can be used to first establish a stable collar and upper hole section, and then enter the lower rock formation for DTH drilling. For projects with thick loose layers, the mud system should be considered in advance during the equipment matching stage.

🧱 Fractures, Broken Zones, and Air-Leakage Formations

Broken zones may cause falling blocks, air leakage, sticking, and abnormal cuttings return. The WR500SE is equipped with an auxiliary foam pump function, which can improve cuttings removal in some dry, fractured, and air-leakage formations. If air leakage is severe, it should be handled comprehensively with foam, casing, and air compressor displacement, rather than simply increasing pressure.

💧 Aquifers and Strong Water Inrush Hole Sections

After entering the main aquifer, groundwater will change the cuttings return in the hole and the working state of the DTH hammer. The depth of the main water-producing layer should be recorded, and air supply, hole cleaning, and casing methods should be adjusted according to the water inflow. During well completion, screen pipes and sealing sections should be set according to the aquifer location to ensure stable pumping later.

🧼 Foam Pump Provides More Options for Handling Complex Formations

The WR500SE information includes an auxiliary foam pump function. Foam can be used in some dry holes, air-leakage layers, and working conditions where cuttings carrying capacity needs to be improved. Foam concentration and usage should be adjusted according to the formation, air compressor, and cuttings return conditions, and the same solution should not be fixed for all projects.

🔌 Dual Quick Couplers Improve On-Site Maintenance Convenience

The dual quick coupler configuration facilitates connection and maintenance of the auxiliary hydraulic system, and is especially suitable for construction teams that frequently relocate and perform on-site disassembly and assembly. When using quick couplers, the interfaces should be kept clean to prevent mud and sand from entering the hydraulic system. At the same time, seals and locking conditions should be checked to prevent high-pressure leakage.

🪜 Ladder Facilitates Inspection of the Long-Stroke Mast

The long-stroke mast requires more frequent inspection of slideways, cylinders, pins, and top structures, so the equipment is equipped with a ladder for maintenance and inspection. Any high-altitude work on the mast should be carried out when the equipment is stopped and the mast is reliably secured, and fall protection measures should be taken according to site regulations.

⚡ Optional Welding Support Facilitates Minor Field Repairs

The information provides optional welding support, which can be used for some on-site repairs and auxiliary work. Welding operations must be performed by qualified personnel and kept away from fuel, high-pressure air pipes, hydraulic hoses, and combustibles to avoid secondary risks to the equipment from sparks and high temperatures.

🚜 Crawler Chassis Is Suitable for Rural Areas, Mining Areas, and General Complex Ground

The equipment travel speed is about 2.5 km/h, and the reference maximum gradeability is 30°. The crawler structure is suitable for rural roads, gravel ground in mining areas, and general uneven sites. During actual climbing and relocation, the overall center of gravity, ground wetness and slipperiness, and mast transportation state should be considered. Safety should not be judged only by the maximum angle.

🦵 1.6 m High Outriggers Facilitate Equipment Leveling and Stability

The high outrigger stroke is 1.6 m, which can support and level the equipment on slightly uneven sites. On soft ground, pads should be added to avoid outrigger sinking after long-term construction, which may cause mast tilting and increased hole deviation.

📦 9.5 T Overall Machine Balances Long Stroke and Transportation

The overall machine weight is about 9.5 T, and the overall dimensions are about 6150 × 2200 × 2600 mm. Compared with larger drilling rigs above 500 meters, it still has certain transportation advantages. However, because it adopts a 6.6 m long-stroke configuration, vehicle length, equipment fixing points, and on-site turning space should be confirmed before transportation.

📌 2.85 m Parameter Note

The information lists a “Loading Width 2.85 m” parameter, but it does not fully correspond to the overall machine external width of 2200 mm. In this article, it is retained in the parameter table as the “width marked in the information” and is not additionally interpreted as the actual transportation width. The final value should be confirmed with formal production technical data.

⚠️ Construction and Maintenance Precautions

Before daily start-up, check the engine, hydraulic system, telescopic mast, crawler, outriggers, auxiliary winch, and high-pressure air pipes; during DTH drilling, check the air compressor, DTH hammer lubrication, and cuttings return; for the long-stroke mast, focus on inspecting guide rails, cylinders, pins, and locking structures; after construction, clean mud, dust, and rock powder in time.

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

📊 Main Technical Parameters