Section mills are primarily used to milling sections in the casing (for side tracking, gravel packing)
and perforation zones. TIANHE section mill is available in a variety of Casing sizes, ranging from
4 1/2″ to 13 3/8″. The blades are all dressed to enable simultaneously milling of the casing. The
milling rate is usually limited by the ability of the fluid in removing the cuttings.