Pneumatically Driven Reverse Circulation Hammer Flush Threaded Double Wall Drill Pipe
Reverse Circulation Hammer Introduction
Reverse Circulation RC drilling uses flush-threaded double-wall drill pipe and high-pressure air to provide continuous return of formation and water samples. Cuttings and formation waters are not contaminated with drilling additives or mixed with other borehole material. Up-hole velocity of about 70 ft/ sec provides reliable logging of water, mineral or contaminant-bearing strata. Water samples representative of specific strata may be airlifted or bailed to the surface.
Reverse Circulation Hammer Feature
1. RC drilling is over five times faster than core drilling, particularly in hard rock and almost half the cost of traditional core drilling.
2. RC hammers are pneumatically driven by compressors and the principal operation of a Reverse Circulation hammer and bits is the same as a standard DTH hammer.
3. RC hammers and bits follow the high performance design associated with traditional DTH equipment and return the highest quality uncontaminated sample.
Reverse Circulation Hammer 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. |
Usage
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