Reverse circulation drilling rig
A reverse circulation drilling rig is a specialized drilling system designed for vertical or inclined boreholes, commonly used in water well drilling, geothermal projects, and mineral exploration. It operates using a reverse flow of drilling fluid to efficiently transport cuttings from the drill bit back to the surface through the inner tube of the drill pipe.
This method ensures faster penetration rates, improved sample quality, and reduced contamination, making it ideal for deep borehole applications and complex geological conditions.
What Is a Reverse Circulation (RC) Drill Rig?
A reverse circulation (RC) drilling rig is a specialized type of geological exploration equipment designed for efficient and accurate subsurface investigation. Commonly used in geology, mineral exploration, hydrogeology, and engineering, this rig creates boreholes beneath the surface to collect soil and rock samples, especially in deep or hard rock formations.
Unlike conventional drilling methods, the RC rig employs dual-wall drill rods: compressed air is injected between the outer and inner tubes, forcing the cuttings to travel back up through the center pipe to the surface. This reverse flow not only improves drilling speed and sample quality but also minimizes contamination, making it ideal for precise geochemical analysis.
Key applications include:
Large-diameter boreholes
Fast, deep penetration in hard ground
Rock core or chip sampling
Site surveys for mining, construction, and water resource projects
RC drilling rigs offer a reliable solution for obtaining accurate geological data and are essential tools in early-stage resource assessment and engineering site evaluation.
A reverse circulation drilling rig is a drilling equipment suitable for vertical or inclined drilling.
The reverse circulation system has a fast drilling speed and is particularly suitable for large-diameter hole construction.
Reverse circulation drilling rig data parameters
| Model | RCD-180RC | RCD-220RC | RCD-300RC | RCD-500RC |
| Total Weight (kg) | 9500 | 9800 | 10000 | 12000 |
| Length × Width × Height (Shipping status)(mm) | 6350×2200×2950 | 6300×2000×2500 | 6750×2300×2800 | 7650×2250×3217 |
| Nominal Drill Depth (m) | 180 | 250 | 250 | 500 |
| Drill Diameter (mm) | φ100~φ350 | φ100~φ350 | φ100~φ350 | φ100~φ350 |
| Drill Head Output: Output Rotation Speed (rpm) | 40/80 70/140 | 40/80 70/140 | 55/110 | 30/60 52/104 |
| Drill Head Output: Max Output Torque (N · m) | 8500 | 8500 | 10000 | 12000 |
| Stroke of Power Head: Feeding (mm) | 3500 | 3500 | 3500 | 7000 |
| Stroke of Power Head: Thrust Force (kN) | 45 | 45 | 45 | 100 |
| Stroke of Power Head: Lifting Capacity (kN) | 60 | 85 | 150 | 160 |
| Engine Drive Type: Model | Cummins | Cummins | Cummins | Cummins |
| Engine Drive Type: Kekuatan | 6BT-C180 / 132KW | 6BT-C180 / 132KW | 6BT-C180 / 132KW | 6BT-C190 / 142KW |
| Engine Drive Type: Rotary Speed (rpm) | 2200 | 2200 | 2200 | 2200 |
| Engine Drive Type: Daya listrik opsional | 55+37 kW | 55+37 kW | - - | - - |
| Track Chassis Base: Width of Pedrail (mm) | 400 | 400 | 400 | 400 |
| Track Chassis Base: Walk Speed (km/h) | 2 | 2 | 2 | 2 |
| Track Chassis Base: Climb Ability (°) | ≤ 20 | ≤ 20 | ≤ 20 | ≤ 20 |
