GQM Type Rolling-ball Flat-bottom Mill Shoe
Specifications
1.API thread2.Bottom face is overlaid with YD alloy
3.GQM type
Function:
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.
Detail Specification:
Technical specifications and parameters for Rolling-Ball Flat-Bottom Mill Shoe | |||
Type |
Outside Size |
Connection |
Casing Size |
GQM140 |
118 x 460 |
NC31 |
5 1/2" |
GQM168 |
146 x 480 |
NC38 |
6 5/8" |
GQM178 |
155 x 500 |
NC38 |
7" |
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