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Address: No55. Jiucaiyuan road, Furong District, Changsha, Hunan,China
Contact name:Ling Bo
Changsha Sollroc Engineering Equipments Co., Ltd |
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SRC040 Weight 17 kgs Black 5 3/4'' 146mm RC Drill Bit For Water Well Drilling
Product Introduce:
Reverse Circulation drilling, or RC drilling, is a method of drilling which uses dual wall drill rods that consist of an outer drill rod with an inner tube. These hollow inner tubes allow the drill cuttings to be transported back to the surface in a continuous, steady flow.
Specification:
SOLLROC RC BIT130MM WITH OTHER SHANK
Diameter | Shank | Buttons * button diameter | Shroud diameter (mm) | weight (kg) | ||
mm | inch | Gauge | Centre | |||
| 146 | 5 3/4 | SRC040 | 8*16mm | 6*16mm + 3*14mm | 144 | 17 |
SOLLROC RC BIT model SRC040:
| Diameter | Buttons * button diameter | Shroud diameter (mm) | weight (kg) | ||
| mm | inch | Gauge | Centre | ||
| 121 | 4 3/4 | 8*14mm | 8*14mm | 119 | 10.7 |
| 124 | 4 7/8 | 8*14mm | 9*14mm | 122 | 14.5 |
| 127 | 5 | 8*14mm | 9*14mm | 125 | 14.7 |
| 130 | 5 1/8 | 8*14mm | 9*14mm | 128 | 14.9 |
| 133 | 5 1/4 | 8*16mm | 9*14mm | 131 | 15 |
| 135 | 5 3/8 | 8*16mm | 6*16mm + 3*14mm | 133 | 15.4 |
| 137 | 5 3/4 | 8*16mm | 6*16mm + 3*14mm | 135 | 15.8 |
| 140 | 5 1/2 | 8*16mm | 6*16mm + 3*14mm | 138 | 16 |
| 143 | 5 5/8 | 8*16mm | 6*16mm + 3*14mm | 141 | 16.5 |
| 146 | 5 3/4 | 8*16mm | 6*16mm + 3*14mm | 144 | 17 |
Adavantages:
1.Samples extracted are reliable and free of contaminants;
2.The method is timely and cost-efficient;
3.Well-suited for difficult terrains;
4.High penetration rates, and it has minimal environmental impact.
5.Drills faster through soft formations with less blockages
Basics of Reverse Circulation Drilling:
(1) RC drilling uses rods with inner and outer tubes, the drill
cuttings are returned to surface inside the rods. The drilling
mechanism is a pneumatic reciprocating piston known as a hammer
driving a tungsten-steel drill bit.
(2) RC drilling utilizes much larger rigs and machinery and depths
of up to 500 meters are routinely achieved. RC drilling ideally
produces dry rock chips, as large air compressors dry the rock out
ahead of the advancing drill bit.
(3) RC drilling is slower and costlier but achieves better
penetration than RAB or air core drilling; it is cheaper than
diamond coring and is thus preferred for most mineral exploration
work.
(4) 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.
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
Package :
Ply-wooden cases + pallet
