Reverse Circulation Drilling Services
Raglan Drilling uses cutting-edge technology and RC drill rigs to provide high-quality Reverse Circulation Drilling services throughout WA. All of our RC drilling tasks are carried out by professionals who are highly competent, experienced, and qualified.
Benefits and Capabilities of RC Drilling:
The benefits of RC drilling include its ease of use, its low water usage, as well as its efficiency. RC drilling is also a cheaper alternative to diamond drilling, with operating costs up to 40% lower. The savings are especially obvious in geologically difficult places, where more traditional drilling methods would increase the cost even more.
- Up to 800m depth
- Large air packs, 1000 psi/2000 cfm
- Automated rod handling
- Hands free breakouts
- Dust suppression
- Down hole Gyro surveying
- Excellent deviation control
- Better Samples
- Faster and More Versatile
Raglan Drilling has the capability to supply a complete remote camp set with either Explorex type caravans or transportable buildings. We can provide remote workshop facilities as well as accommodation facilities, including:
- Explorex Caravans
- Sea container accommodation and kitchen with or without dome
- Water tankers (potable and non)
- Fuel tankers
- Sea container workshop
Frequently Asked Questions
Reverse Circulation (RC) drilling is a drilling technique that employs dual-wall drill rods with an inner tube. The drill cuttings are subsequently brought back to the surface in a steady, continuous flow through these hollow inner tubes.
In contrast to most other drilling applications, a sample of rock cuttings rather than a rock core is obtained. A tungsten-steel RC drill bit developed particularly to fracture hard rock is driven by a drilling mechanism in the form of a pneumatic reciprocating piston known as a hammer.
The hammer is used to recover compressed rock samples that have been forced through the machine. When air is pumped through the annulus (a ring-shaped structure) of the rod, the pressure differential generates a reverse circulation, causing the samples to ascend to the inner tube. When the cuttings reach the top of the rig, they are delivered to the cyclone through a hose.
Drill cuttings will flow through the cyclone and fall into the sample bag, which is accessible through the bottom entrance. These bags are labelled with the sample collection point’s position and depth and may be delivered directly to an assay facility for analysis.
The RC drilling procedure assures that the samples collected are trustworthy and uncontaminated. This opens the door to massively mass-producing high-quality, trustworthy samples. Additionally, sample tracking and cataloguing will be simplified. Because the samples gathered provide particular location and depth information, interested parties and surveyors may make better discoveries of mineral deposits.
RC drilling penetration rates are frequently quicker and occur at greater depths. The sample velocity can exceed 250 m/sec through the inner tube. Production rates are excellent; at speeds more than 10 m/h, rates of 200-300 m/day are usual. As a consequence, the drilling process takes less time, and clients get results far sooner.
- Total Drill Depth: 700 metres
- Rig Carrier: Modern 8×8 MAN and Mercedes
- On board Air: 1150/500
- Auxiliary Air: 2000/900
- Rod handling:KL Rod Handlers
- Make and Break: Metzke/ Corpraal Hands Free
- Rod size: 114.3mm (4.5 inch )
- Bit size: 114mm-139mm (4.5 inch – 5.5/8 inch)
- Support Equipment: Modern Fleet Of Man And Mercedes 8×8 Trucks
- Dust Suppression: Yes
- Sampling system: Dual Box Cyclone And Cone Splitters
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