Starting Mills FS type
Starting Mills FS type
Starting mill FS is designed for descent the whipstock and for the initial milling of the "window" in the production string.

Starting mill consists of a body and a rod. The body is reinforced with a tungsten carbide alloy. Flushing holes are provided in the housing. In the upper part of the milling cutter, a tool joint is made in accordance with GOST 28487-90 for connection to the drill pipe string.

Technical characteristics
Code Nominal diameter of the casing, in. Casing diameter D, in. Length, in. Equivalent to API 7 (USA)
FS-112 5,51 4,41 41,3 2 7/8 Reg
FS-114 5,51 4,49 41,3 2 7/8 Reg
FS-116 5,51 4,57 41,3 2 7/8 Reg
FS-118 5,51 4,65 41,3 2 7/8 Reg
FS-120 5,51 4,72 41,3 2 7/8 Reg
FS-124 5,75 4,88 41,3 2 7/8 Reg
FS-136 6,61 5,35 41,3 2 7/8 Reg
FS-142 6,61 5,59 45,3 NC-31
FS-151 7,01 5,94 45,3 NC-31
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