The liquid (gas) flow of the reverse circulation drilling is compared with the conventional circulation method called positive circulation, in which the flushing medium is fed into the bottom of the drill hole through the inner hole of the drill rod and returns to the ground along the annular gap outside the drill rod. The speed of return is high, and it is very strong to carry rock powder. Rocks that have been drilled at the bottom of the hole can be discharged in time and quickly return to the surface.
Main Advantages:
1. High drilling efficiency;
2. Timely sampling and high rate of adoption are conducive to accurately assessing the stratum;
3. Using higher grade carbides for longer life;
4. Minimizes hole erosion in fragile formations
5. Drills faster through soft formations with less blockages
6. Drills straighter through consolidated and unconsolidated formations
7. When drilling in the aquifer, the blockage of the pore wall by the mud can be avoided, and the original natural permeability of the formation can be maintained. The reverse circulation drilling can use various materials such as hard alloy, diamond, cone and scraper bit. Different rock fragmentation tools can be used for cyclic flush drilling of various rock fragmentation methods such as rotary drilling, impact drilling and impact rotary drilling, and the flushing medium can be clean water, mud or air. Can drill into the vertical hole, inclined hole or horizontal hole, can drill into all kinds of strata.
Why do you need to set back injection on reverse circulation bit ?
According to the way of mud circulation, the rotary drilling machine is divided into positive circulation drilling and reverse circulation drilling. Positive circulation drilling is that the mud is pumped out of the mud pool by the mud pump, the input hose is sent to the upper entrance of the hollow drill rod, and the hollow drill rod is sprayed to the bottom of the drill bit. The rotating drill bit lubricates the mud.
Key Features:
1. Manufactured using premium hardened metals for long life;
2. Maximum material recovery, up to 98%;
3. No cross contamination of samples;
4. Handles injection of water, foam, oil, and polymers without performance loss;
5. Delivers maximum drilling under water.
Product Ranges:
1) 3" RC hammers: RE531
2) 4" RC hammers: RE004/RE004R; RE542
3) 5" RC hammers:RE543,RE545,RE547;PR40,PR52,PR54; MX5456
4) 6" RC hammers: RC62/RC62R
5) 8" RC hammers: RC82/RC82R
6) 10" RC hammers: RC100/RC100R
No | RC Hammer Size | RC Hammer Series Model | ROSCHEN RC Hammer Series |
1 | 3" | RE531 | ROS RC 30 |
2 | 4" | RE004/RE004R; RE542 | ROS RC 40 |
3 | 5" | RE543,RE545,RE547; PR40,PR52,PR54; MX5456 | ROS RC 50 |
4 | 6" | RC62/RC62R | ROS RC 60 |
5 | 8" | RC82/RC82R | ROS RC 80 |
6 | 10" | RC100/RC100R | ROS RC 100 |
RE004 hammer technical data:
Length (less bit) | 1252mm | |
Weight (less bit) | 52.0kg | |
External diamater | φ107mm | |
Bit shank | RE004 | |
Hole range | φ111-φ127 | |
Connection thread | 3.5"-4" Remet 4" Metzke | |
Working pressure | 1.0Mpa-3.0Mpa | |
Air consumption | 1.7 Mpa | 8 m³/min |
2.4 Mpa | 12 m³/min | |
3.0 Mpa | 16 m³/min |
ROSCHEN RC hammer technical data:
ROSCHEN RC Hammers Specifications | |||||||||
Hammer Size | Hammer | Bit Shank | ROSCHEN Code | Hole Range (mm) | External Diameter (mm) | Length (without bit) mm | Weight (N.W.) kgs | Connection Thread | Working Pressure |
3" | RE531 | RE531 | ROS RC 30 | 84-100 | 81 | 1069 | 29 | 3" Remet | 1.0-3.0Mpa |
3" | RE035 | RE035 | ROS RC 35 | 84-105 | 85 | 1075 | 35 | 3" Remet | 1.0-3.0Mpa |
4 1/2" | RE004 | RE004 | ROS RC 40 | 111-127 | 107 | 1252 | 52 | 3.5"-4" Remet 4" Metzke | 1.0-3.0Mpa |
4 1/2" | RE540 | RE540 | ROS RC 45 | 111-127 | 107 | 1252 | 52 | 3.5"-4" Remet 4" Metzke | 1.0-3.0Mpa |
5" | RE040 | RE040 | ROS RC 50 | 113-130 | 109.5 | 1191 | 57 | 3.5"-4" Remet 4" Metzke | 1.0-3.0Mpa |
5" | RE542 | RE542 | ROS RC 50 | 113-130 | 109.5 | 1191 | 57 | 3.5"-4" Remet 4" Metzke | 1.0-3.0Mpa |
5" | RE543 | RE543 | ROS RC 50 | 120-135 | 116 | 1191 | 62 | 3.5"-4" Remet 4" Metzke | 1.0-3.0Mpa |
5" | RE545 | RE545 | ROS RC 50 | 122-135 | 117.5 | 1261 | 65 | 4"-4.5"Remet 4"-4.5" Metzke | 1.5-3.5Mpa |
5 1/2" | RE547 | RE547 | ROS RC 55 | 130-146 | 124.5 | 1270 | 71 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
5 1/2" | RE052 | RE052 | ROS RC 55 | 130-146 | 124.5 | 1270 | 71 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
5 3/4" | RE054 | RE054 | ROS RC 55 | 130-146 | 124.5 | 1270 | 85 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
5 3/4" | RE140 | RE140 | ROS RC 55 | 130-146 | 124.5 | 1270 | 85 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
5" | PR40 | PR40 | ROS RC 50 | 124-142 | 120.5 | 1362 | 80.5 | 3.5"-4.5" Remet 3.5"-4.5" Metzke | 1.5-3.5Mpa |
5 1/2" | PR52 | PR52 | ROS RC 55 | 126-142 | 121 | 1227 | 68.5 | 4"-4.5"Remet 4"-4.5" Metzke | 1.5-3.5Mpa |
5 1/2" | PR52R | PR52/PR52R | ROS RC 55 | 130-146 | 124 | 1225 | 65 | 4"-4.5"Remet 4"-4.5" Metzke | 1.5-3.5Mpa |
5 1/2" | PR54 | PR54 | ROS RC 55 | 135-150 | 130 | 1294 | 84.5 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
6" | MX5456 | MX5456 | ROS RC 60 | 136-150 | 132 | 1362 | 90 | 4.5"Remet 4.5" Metzke | 1.5-3.5Mpa |
6"~6 1/2" | RC62/RC62R | RC62/RC62R | ROS RC 65 | 152-190 | 146 | 1320 | 110 | As Request | 1.5-3.5Mpa |
8" | RC82/RC82R | RC82/RC82R | ROS RC 80 | 190-250 | 180 | 1395 | 185 | As Request | 1.5-3.5Mpa |
10" | RC100/RC100R | RC100/RC100R | ROS RC 100 | 250-370 | 240 | 1528 | 328 | As Request | 1.5-3.5Mpa |
Notes: | |||||||||
Metzke, Remet thread is available! | |||||||||
Any special type shank of RC Hammer will be available by requests. |
Reverse Circulation(RC) Bits Available Sizes:
No | RC Bit Size | RC Hammer Series Model Diameter Specifications | ROSCHEN RC Bit Series |
1 | 3" RC bits: | diameter 84mm-100mm shank RE531 | ROS RC 30 |
2 | 4" RC Bits: | Diameter (104mm-127mm); Shank type: RE004/RE004R; RE542 | ROS RC 40 |
3 | 5" RC Bits: | Diameter(113mm-146mm); Shank type: RE543, RE545, RE547; PR40, PR52, PR54; MX5456 | ROS RC 50 |
4 | 6" RC Bits: | Diameter(152-190mm); Shank type: RC62/RC62R; | ROS RC 60 |
5 | 8" RC Bits: | Diameter(190-250mm); Shank type: RC82/RC82R; | ROS RC 80 |
6 | 10" RC Bits: | Diameter(250-370mm); Shank type: RC100/RC100R. | ROS RC 100 |
* | Any special size woulbe be against customer's requirements |
ROSCHEN also provide DTH hammers and bits, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc.
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.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.
For more information, please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Website: http://roschen.en.made-in-china.com
http://roschen.en.made-in-china.com