Application
The starting-and-window mill with combined armament FSO-T is designed to lower and install a whipstock on the bottom and mill a “window” in casing in a single-round trip.
It may be used:
- for trip-in and installation of a whipstock;
- independently with a washing through the circulating openings;
- in conjunction with one (two) watermelon mill.
Construction
Starting-and-window mill is strengthened with tungsten carbide powder and can also be produced in a helical form.