Whipstock with bottom-set mechanical anchor (KOYAM)
The whipstock with a mechanical single-die anchor is designed for casing exit through one or multiple casings. The whipstock system - comprising a starting mill (SM) and a watermelon mill (WM) - enables whipstock setting, casing exit and rathole drilling in a single trip. The system is mechanically set on bottom on a cement plug or bridge plug.
Characteristics:
Designation
KOYAM-139.05
KOYAM-146.05
KOYAM-168/178.05
KOYAM-245.05
Nominal casing dia., mm
139
140/146
168/178
245
Whipstock & mechanical anchor OD
112
115
135
200
Whipstock length, mm
2600
2600
2900
4500
Mechanical anchor length, mm
2130
2130
2130
3160
Total length, mm
4630
4630
4930
7460
Shearing force of the transportation bolt, tn
9/11
9/11
9/11
15/18
