Starting mill
The starting mill (SM) is used to set the whipstock at the initial stage of casing window milling. The SM is supplied with a watermelon mill as part of the window milling and sidetracking system (see the catalog vol.2 - Casing exit/ Sidetracking Systems).
Characteristics:
Designation
SM-90
SM-115
SM-116
SM-120
SM-122
SM-123
SM-124
SM-125
SM-140
SM-144
SM-146
SM-147
SM-150
SM-210
OD, mm
90
115
116
120
122
123
124
125
140
144
146
147
150
210
Length, mm
370
470
470
470
470
470
470
470
490
490
500
500
500
670
Cutting length, mm
230
290
290
290
290
290
290
290
290
290
310
310
310
410
Axial load, kN
10...20
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
22...48
Thread*
Z-66
Z-73
Z-86
Z-86
Z-86
Z-86
Z-86
Z-86
Z-86
Z-86
Z-102
Z-102
Z-102
Z-133
