Among various drilling technologies, the reverse circulation drilling rig is widely known as the “king of efficiency”. Compared with traditional Conventional Rotary or diamond wireline coring, how exactly does the rc drill rig achieve doubled construction speed?【WhatsApp/WeChat/Phone】+86 13837122632
YG Hot-Selling RC Drill Rig for Sale
| YGRC-500 | |||
| Max drilling depth | 500 m | Drilling diameter | 115-305 mm |
| Air pressure | 1.05-3 Mpa | Air consumption | 16-42 m³/min |
| Drill pipe length | 3 m | Drill pipe diameter | 89/108/127 mm |
| Axial pressure | 7T | Lifting force | 15T |
| Fast lifting speed | 14.5 m/min | Fast feeding speed | 21 m/min |
| Max rotary torque | 5000-800 Nm | Max rotary speed | 0-120/0-150 r/min |
| auxiliary winch lifting force | 20T | Drilling efficiency | 10-25 m/h |
| Driving speed | 2.5 Km/h | Uphill angle | 21° |
| Weight | 11 T | Dimension | 6.8×2.1×2.8 m |
| Working condition | Loose layers and bedrock | Drilling methods | Top drive hydraulic rotation and feed, DTH hammer or mud drilling |
| power | Cummins 154 kW | Optional accessories | Reverse circulation device, mud pump, generator, foam pump |
Revolution of RC Drill Slag Discharge Path: Differences in Continuity
In traditional drilling methods, drilling cuttings are discharged through the annular space between the drill pipe and the hole wall. Restricted by hole wall friction and slurry pressure, this method leads to slow rising speed of muck, and hole wall collapse often occurs, resulting in repeated hole cleaning.
- Advantages of reverse air drilling: It adopts double-wall drill pipes and uses high-pressure air to directly blow out drilling cuttings from the inner central pipe of the drill pipe.
- Efficiency logic: This “internal circulation” slag discharge path is short and free from external stratum interference. Since drilling cuttings do not need to stay in the hole, the drilling rig can maintain continuous and high-pressure impact, realizing genuine “drilling while deslagging”.
Sampling Speed of RC Drill Rig: Leap from Hours to Minutes
In the field of mineral exploration, obtaining stratum samples is the core task. Traditional Core Drilling requires frequent tripping, pipe disassembly, rock core pipe taking and re-drilling, which is extremely time-consuming.
- Conventional method: It usually takes 1 hour of downtime to process rock cores after drilling 3 meters.
- reverse air drilling: Drilling cuttings are directly delivered to the surface collector through the central pipe of double-wall drill pipes.
- Efficiency comparison: Engineers can obtain samples on-site in real time. Actual measurement shows that at the same depth, the sampling speed of reverse circulation drilling rig is generally 3 to 4 times that of diamond coring.
Coping Capacity of RC Drill Rig for Complex Strata
When encountering broken layers, lost circulation layers or extremely hard rock formations, ordinary drilling rigs are often forced to stop working or even suffer bit damage due to buried drilling tools or insufficient pump pressure.
- Core competitiveness: Matched with high-pressure DTH hammer, the reverse circulation drilling rig breaks rocks through high-frequency impact. Even in arid and water-short areas or fractured strata, the RC system can keep the drill bit clean by pneumatic circulation.
- Time saved: It reduces the time spent on handling downhole accidents such as stuck drilling and slurry leakage repair, enabling the equipment to maintain a higher operating rate.
Reduction of Auxiliary Working Hours: Automation and Modularization
The RC drill rig is equipped with a high-performance hydraulic system and automatic pipe changing device.
Technical analysis: Although the single double-wall drill pipe of rc drill rig is heavy, its structural design combined with the rig’s built-in hydraulic power head greatly simplifies the pipe connection process. It cuts down the time for manual handling and manual locking, and significantly increases the proportion of pure drilling time in total working hours.
What are the Advantages of the YG reverse circulation drilling rig?
- Stable and reliable operation
The drill frame is equipped with compensation oil cylinders, which stretch and closely contact the ground during operation. It greatly improves the rigidity of the drill frame, ensuring stable operation even on slopes and gravel ground, and avoiding drilling quality defects caused by shaking.
- Time-saving and labor-saving drill pipe connection and disassembly
The combination of drill pipe elevator and hydraulic wrench allows one person to complete drill pipe connection and disassembly quickly and safely. It saves more than 50% of auxiliary time compared with manual operation, greatly reduces labor intensity, and improves pure drilling efficiency.
- Accurate and deviation-free hole opening
The unique drill centralizer matched with a level gauge ensures the verticality and position accuracy of hole opening. The flexible opening and closing design of the centralizer and combined splints with adjustable inner diameter perfectly fit drilling tools, completely preventing hole deviation at the source.
- Protect drill pipe threads and extend service life
Compensation sliding plates automatically protect drill pipe threads during tripping, avoiding collision and wear. It can extend the service life of drill pipes by more than 30% and reduce long-term replacement costs.
- Adapt to harsh dusty environments
Patented air pre-filter is adopted to remove over 90% of dust in intake air with automatic dust discharge, no manual cleaning required. Combined with a special oil mist device for the air pressure system, it effectively prolongs the service life of engines and impactors in high-dust working conditions such as mines.
- Wear-resistant and durable slide rails
Roller slide rails are used to replace sliding friction with rolling friction, featuring excellent wear resistance. It maintains long-term feeding precision and reduces maintenance and replacement frequency.
- Wide depth coverage and high efficiency
Drilling depth ranges from 200 to 1200 meters for selection. The hot-selling models YGRC-400/500 achieve a drilling efficiency of 10-25 meters per hour. The drilling diameter is 115-305 mm with working air pressure of 1.05-3 Mpa, compatible with medium and high air pressure impactors, and capable of efficient drilling in both loose layers and bedrock.
