Why Is the Reverse Circulation Drilling Rig the Optimal Equipment for Geological Sampling?
Reverse circulation (RC) drilling rigs have become essential equipment in geological exploration due to their unique reverse circulation cuttings removal system, high-precision sampling capability, and engineering adaptability. In applications such as mineral resource exploration, hydrogeological surveys, and environmental monitoring, RC drilling technology significantly enhances sampling efficiency, data accuracy, and operational safety through continuous innovation.
Reverse Circulation Technology Enables High-Efficiency Drilling
RC drilling rigs operate based on reverse fluid circulation: high-pressure air or fluid is injected down the annulus (outside the drill pipe), carrying rock cuttings through the inner pipe to the surface. This eliminates the need for mud wall protection and the frequent rod changes required by traditional direct circulation drills.
RC drilling can achieve daily progress of 200–500 meters, 3 to 5 times faster than conventional core drilling, substantially reducing the timeline of large-scale exploration projects.
Contamination-Free Sampling Ensures Geological Data Accuracy
Rock cuttings are transported directly to the surface through the inner pipe, completely isolated from the borehole wall and drilling fluid. This prevents contamination and interference with sample composition, a common issue in conventional drilling. The mineral composition error rate is ≤1.5%, and the particle size distribution retains the original formation characteristics, ensuring reliable data for ore grade assessment and stratigraphic analysis.
All-Terrain Capability Overcomes Harsh Environmental Conditions
Mounted on a crawler chassis with independent suspension and a low ground pressure design, RC rigs can operate on slopes up to 30° and adapt to challenging environments such as mountainous terrain, deserts, and permafrost zones. Pneumatic RC rigs can drill in arid regions using only air circulation, without the need for water. Operating temperatures range from -20°C to 50°C, with altitude capability up to 4,000 meters, allowing deployment in remote locations without auxiliary support equipment.
Modular Drill System Supports Full-Strata Exploration
RC drilling rigs support quick tool changes, including roller cone bits and diamond bits. They can adapt to a variety of formations-from loose soils to hard rock (compressive strength ≤ 250 MPa) and fractured strata-by adjusting drilling parameters such as rotation speed, feed pressure, and fluid pressure. Standard drill pipe diameters range from 76 mm to 219 mm, with maximum drilling depths up to 1,200 meters, making the system suitable for shallow sampling and mid-depth core exploration.
technical parameters of cheap RC drilling rig
|
Model |
Unit |
RCZ1200RC |
|
Max drilling depth |
M |
1200 |
|
Drilling diameter |
mm |
105-800 |
|
Air pressure |
Mpa |
1.6-8 |
|
Air consumption |
m3/min |
16-96 |
|
Drill pipe length |
m |
6 |
|
Drill pipe diameter |
mm |
127/146 |
|
Diameter of air reverse circulatidouble-layer drill pipe |
mm |
127/146 |
|
Axial pressure |
T |
13 |
|
Lifting force |
T |
57 |
|
Fast lifting speed |
m/min |
30 |
|
Fast feeding speed |
m/min |
44 |
|
Max rotary torque |
Nm |
24000/12000 |
|
Max rotary speed |
r/min |
86/172 |
|
Small auxiliary winch lifting force |
T |
2.5 |
|
Jacks stroke |
m |
1.7 |
|
Drilling efficiency |
m/h |
10-35 |
|
Moving speed |
km/h |
6.4 |
|
Uphill angle |
Slope |
21° |
|
Weight of the rig |
T |
23 |
|
Dimension |
M |
11.5*2.25*3.4 |
|
Engine |
/ |
Cummins 264kw |
All Types of RC drilling Rigs for Option
Certificate
Our products have passed CE certification and ISO9001 quality management system certification, ensuring that they meet international standards in terms of safety, reliability and quality.
FAQ
Q: Why is the price of the same model machine different?
A: Because the price of the drilling rig is influenced by configuration. Higher-end machine often come with superior equipment , adopting powerful brand engine, advanced control systems, and premium-quality drill pipes and bits.
Q: Why choose us?
A: Rancheng Machinery is a very professional drilling rig supplier in China. We have rich experience in this industry for 11 years. Now our products are serving around the world. We have high-quality drilling rigs, professional and efficient services, competitive prices and fast delivery.
Q: Do you offer any custom designs?
A: Yes, we have our trade factory. We provide our customers with customized service. We can produce a superior product for you by your designs.
Q: How to order?
A: Step 1, please tell us what model and quantity you need;
Step 2, then we will make a proforma invoice for you to confirm the order details;
Step 3, we confirmed everything, then arrange the payment;
Step 4, finally we deliver the goods within the stipulated time.
Q: When will make delivery?
A: About 10-15 work days after receipt of the payment.
Q: After-sales service
A: One-year warranty for all kinds of products;
Q: Can we visit your factory?
A: Yes, we warmly welcome you to visit our factory.
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