Specifications

1.API thread
2.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"