Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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6m 4" Inch RC Rods Metzki Box And Pin Thread With Inner Tubes For Reverse Circulation Drilling
Product Introduce:
RC, or reverse circulation, drilling is a tried and true drilling method in certain circumstances. Drillers usually use it on large-diameter holes because it is faster and easier to clean the hole. The fluid and cuttings flow up the drill pipe and down the annulus. In softer formations, this causes less washout and makes sampling faster and more accurate because cuttings are not contaminated by sloughing formation off the hole walls. They also come up the drill pipe very fast, giving an accurate formation log.
Adavantages:
1.High tensile hardened tool joints
2.Seamless High tensile drill pipe and inner tube materia
3.Inner tubes slide into place and seal with double o-rings as the threaded outer tubes are torqued together.
4.Abrasion-resistant alloy steel inner and outer tubes extend life of the drill pipe
SOLLROC Dual Wall RC Drill rod specification:
| Pipe OD | Outer Tube | Inner Tube | Thread | Spanner Flat | Weight (6M) | |||||
| outer diameter | inner diameter | wall thickness | outer diameter | inner diameter | wall thickness | |||||
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Remet / 4'' Metzke / 4'' Matrix | 90 mm | 155 kgs | |
SOLLROC Dual Wall RC Drill rod specification:
| Pipe OD | Outer Tube | Inner Tube | Thread | Spanner Flat | Weight | |||||
| outer diameter | inner diameter | wall thickness | outer diameter | inner diameter | wall thickness | 3M | 6M | |||
| 3 1/2'' | 88.9 mm | 81.8 mm | 5.3 mm | 38.1 mm | 32.6 mm | 5.5 mm | 3 1/2'' Remet | 90 mm | 77 kgs | 125 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Remet | 90 mm | 77 kgs | 155 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Metzke | 90 mm | 77 kgs | 155 kgs |
| 4'' | 101.6 mm | 94.6 mm | 7.1 mm | 50.8 mm | 45.3 mm | 5.5 mm | 4'' Matrix | 90 mm | 77 kgs | 155 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Remet | 90 mm | 97 kgs | 172 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Metzke | 90 mm | 97 kgs | 172 kgs |
| 4 1/2'' | 114.3 mm | 107.2 mm | 7.1 mm | 63.5 mm | 58 mm | 5.5 mm | 4 1/2''Matrix | 90 mm | 97 kgs | 172 kgs |
Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.
The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.
The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis results of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.
Detailed Photo:
About us:
SOLLROC Reverse Circulation drilling (RC) ,from size 3’’ to 5.5’’, is a technique of drilling that uses dual wall drill rods that consist of an outer drill rod with an inner tube. By using compressed air to extract rock fragments sample,the samples travel through rods to a sample splitter at surface, avoiding all contact between the samples and the borehole wall that allows samples to be retrieved with minimal contamination,which is mainly used in deep hole exploration and mining grade control.
Delivery Way:
By Air, By express or By Sea
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.