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Micro-reaming Tool While Drilling-Excellent Working Stability
•It can be connected to the drill string to achieve micro-reaming while drilling. •Ream a borehole to a diameter slightly larger than the theoretical drill bit diameter.
Description
Applications
It is suitable for strata that are prone to collapse and have irregular borehole diameters that require micro-reaming.
Features & Benefits
1. A single component, with no moving parts, stronger than the drill pipe to which it is attached.
2. The upper and lower cutting structures can achieve conventional positive rotation and reverse rotation during drilling, reducing rotation time and the number of reaming runs needed.
3. The eccentric structure design can expand the hole diameter larger than the tool through the hole.
Technical parameters
|
Series |
Wellbore diameter (mm) |
Thread |
Reamed Diameter (mm) |
Joint Diameter (mm) |
PDC Diameter (mm) |
|
DSR118 |
118 |
NC31×NC31 |
130 |
105 |
8 |
|
DSR-152 |
152.4(6") |
NC38×NC38 |
158 |
121 |
8 |
|
DSR-165 |
165.1(6-1/2") |
NC38×NC38 |
173 |
121 |
8 |
|
DSR-216 |
215.9(8-1/2") |
NC50×NC50 |
226 |
165 |
13 |
|
DSR-241 |
241.3(9-1/2") |
NC50×NC50 |
254 |
165 |
13 |
|
DSR-311 |
311.2(12-1/4") |
NC50×NC50 |
326 |
178 |
13 |
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