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Rolling-Ball Flat-Bottom Mill Shoe
The rolling--ball flat--bottom mill shoe whose bottom face is overlaid with YD alloy is used to fully grind junks which is stuck downhole and impossible
to be caught. Additionally, rolling balls which are dressed on cylinder face of mill shoe can guarantee the mill shoe not to mill casing inside wall during milling operation in hole.
Technical specifications and parameters
|
Type |
Outside size |
Connection |
Casing Size |
|
GQM140 |
118*460 |
NC31 |
5 1/2" |
|
GQM168 |
146*480 |
NC38 |
6 5/8" |
|
GQM178 |
155*500 |
NC38 |
7" |
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