Cemented whipstock KOC
The whipstock with cemented anchor is designed to deviate the drill bit from the original open hole axis during casing window milling and rathole drilling. The system is run in conjunction with a starting mill (SM) and a watermelon mill (WM). Installation is performed by mechanically setting the assembly on bottom, followed by cementing the anchor.
Characteristics:
Standard size code of whipstock
CW-135
CW-190
CW-245
CW-426
Diameter of open borehole, mm
151,0-190,5
215,9-244,5
269,9
490,0-508,0
External diameter of whipstock, mm
135
190
245
426
Length of whipstock, mm
2900
4700
4900
9600
Length of cemented anchor, mm
3500-6000
3500-6000
3500-6000
3500-6000
Total length of the tool kit, mm
6400-8900
8200-11200
8400-11400
13100-15600
Shearing force of transportation bolt, tn
9/11
9/11
15/18
15/18